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Tendril

A tendril is a specialized, slender, thread-like structure in botany, often derived from a modified stem, leaf, petiole, or leaflet, that enables climbing plants to attach to supports through coiling and grasping motions.^[1] These organs exhibit thigmotropism, a touch-sensitive growth response that allows them to wrap around nearby objects, providing structural support for vining species in their natural habitats.^[2] Tendrils can be classified into types such as stem tendrils, seen in plants like grapevines (Vitis vinifera), where the entire stem or branch is modified, and leaf tendrils, as in garden peas (Pisum sativum), where leaves or leaflets serve this function.^[3] Functionally, they facilitate upward growth toward sunlight by anchoring the plant to trellises, trees, or other surfaces, enhancing access to resources while minimizing energy expenditure on rigid stems.^[4] In some cases, such as certain species of passionflowers like Passiflora discophora, tendrils feature adhesive pads at their tips for attachment to smoother surfaces, demonstrating evolutionary adaptations for diverse environments.^[5]

Definition and Morphology

Physical Structure

Tendrils are slender, thread-like structures derived from modified stems, leaves, petioles, or inflorescences in various climbing plants, enabling physical support and attachment. These organs typically exhibit diameters ranging from 0.12 mm to 0.66 mm, as observed in cross-sections of cucurbitaceous species such as Momordica balsamina (minimum 123.05 µm) and Cucurbita pepo (maximum 656.1 µm).^[6] Lengths vary widely but can extend up to 41 cm in certain species, for example, the uncoiled tendrils of Nepenthes berbulu reaching 23–41 cm in intermediate pitchers.^[7] Anatomically, tendrils consist of a single layer of epidermal cells, typically rectangular in shape, surrounding the cortex and central vascular tissues. The epidermis provides a protective outer layer, while the cortex contains collenchyma and sclerenchyma cells for mechanical support, with sclerenchyma layers varying from 2–3 in Cucumis melo to 7–9 in Lagenaria siceraria. Vascular bundles, numbering 3–12 per cross-section (e.g., 12 in Luffa acutangula var. amara), are arranged centrally or peripherally and exhibit shapes such as oval, elliptical, or irregular, facilitating nutrient and water transport.^[6] Specialized gelatinous fibers (G-fibers), located in the cortex between the vascular tissues and epidermis, form a key component enabling contractile properties; these fibers consist of a lignified secondary wall and a non-lignified tertiary G-layer rich in cellulose and acidic polysaccharides.^[8] In touch-sensitive tendrils, G-fibers create a cylinder up to six cell layers thick, as seen in species like Brunnichia ovata and Vitis spp., while in unidirectional coiling types like wild cucumber, they form a plate on the inner surface. Microscopic features include the presence of calcium oxalate crystals (raphides) in tissues of some species, such as Parthenocissus quinquefolia, which can cause irritation upon contact.^[9] Size variations are evident across taxa; for instance, Cucumis humifructus produces 2–8 tendrils per node, providing enhanced leverage compared to the single tendril typical in most cucurbits.^[10] These structural adaptations underscore the tendril's role as a versatile organ in plant morphology.

Types and Variations

Tendrils in plants are classified into 17 ontogenetic types based on their developmental origins, divided into those derived from vegetative organs (10 types) and reproductive organs (7 types). This classification highlights the convergent evolution of tendril structures across angiosperms, where similar functional forms arise from diverse embryonic tissues.^[11] Among vegetative-derived tendrils, stem- or shoot-modified types are common in the Cucurbitaceae family, such as in Citrullus lanatus (watermelon), where tendrils emerge as lateral extensions of the stem for support. Leaflet-derived tendrils occur when terminal leaflets transform, as seen in Pisum sativum (garden pea), where the upper leaflets elongate and coil while basal ones remain photosynthetic. Petiole-derived tendrils arise from leaf stalks, exemplified by Clematis species, which use the petiole or rachis to form slender, twisting structures. Other vegetative variations include whole-leaf modifications, like in Lathyrus aphaca, where the entire leaf blade converts to a tendril, with enlarged stipules assuming photosynthetic roles.^[11]^[11]^[12]^[11] Reproductive-derived tendrils include inflorescence modifications, such as in Vitis vinifera (grapevine), where tendrils develop from aborted flower clusters at the inflorescence apex. In Nepenthes species, tendrils originate from modified petioles or bracts and initially function in climbing before transitioning to support carnivorous pitcher traps.^[11]^[11] Parasitic plants exhibit specialized attachment mechanisms, notably Cuscuta (dodder), where stems coil around host plants, forming haustoria—specialized penetrating organs—for nutrient uptake; the plant lacks chlorophyll and relies entirely on the host.^[13] Tendril branching patterns further diversify these types, with simple (unbranched) forms prevalent in species like Passiflora, contrasting compound (branched) tendrils in groups such as Bignonieae, where multiple tips enhance attachment efficiency. These variations underscore the adaptability of tendril ontogeny without altering core morphological traits like helical coiling potential.^[11]

Evolutionary History

Origins and Development

Tendrils represent a convergent adaptation that has arisen independently multiple times, with early examples in extinct gymnosperms such as pteridosperms and later within angiosperms, enabling climbing plants to access light in the forest canopy by providing structural support for vertical growth.^[14] This evolutionary innovation is absent in extant gymnosperms and earlier plant lineages, though fossil records suggest origins from early climbing vines, including Late Carboniferous pteridosperms such as Lescuropteris genuina and Blanzyopteris praedentata, which possessed tendrils derived from modified leaflets, indicating that scrambling and climbing habits predate angiosperms but evolved into more specialized forms later.^[14] A key milestone in tendril evolution occurred during the radiation of angiosperms in the Cretaceous period, approximately 100 to 66 million years ago, when flowering plants diversified rapidly and became dominant in terrestrial ecosystems.^[15] This timeframe aligns with the emergence of tendrils across major angiosperm clades, including magnoliids, monocots, and eudicots, as a response to ecological pressures favoring arboreal habits.^[14] Developmentally, tendrils originate from meristematic tissues, such as those in shoot apices, leaf primordia, or inflorescence buds, undergoing ontogenetic modifications that transform these structures into coiling organs.^[14] Hormonal regulation plays a central role, with auxin gradients establishing polarity and driving asymmetric elongation, while also conferring thigmotropic sensitivity to touch stimuli that initiate coiling.^[16] In certain lineages, such as Vitaceae, gibberellins further influence the fate determination between tendrils and inflorescences during early development.^[14]

Distribution in Plant Species

Tendrils are predominantly found in angiosperms, where they have evolved independently across the phylogenetic tree, from basal magnoliids to derived asterids.^[11] A comprehensive survey identifies 17 distinct tendril types derived from vegetative or reproductive structures, distributed across approximately 35 families and numerous genera.^[11] This diversity underscores the recurrent adaptation of tendrils in climbing habits within flowering plants.^[11] Among angiosperm families, tendrils are especially prevalent in Fabaceae, where they often arise from modified leaflets, as seen in peas (Pisum sativum).^[17] Vitaceae features tendrils derived from modified inflorescences or branches, exemplified by grapes (Vitis spp.), with about 13-14 genera and 800 species worldwide.^[18] Passifloraceae includes tendril-bearing climbers like passionflowers (Passiflora spp.), where tendrils form from leaf tips.^[11] Similarly, Bignoniaceae hosts tendrils from various origins, such as in the Chilean glory-flower (Eccremocarpus scaber).^[11] Other notable families encompass Cucurbitaceae (e.g., cucumbers and squash), Sapindaceae, and Convolvulaceae, contributing to the broad taxonomic spread.^[11] Occurrences of true tendrils outside angiosperms are rare, with modified thread-like structures in some ferns (e.g., stolons in Nephrolepis exaltata) resembling tendrils but lacking the specialized coiling and attachment traits of angiosperm versions.^[19] No analogous true tendrils appear in extant gymnosperms or algae, though fossil evidence exists from extinct gymnosperm lineages like pteridosperms.^[11] Tendril-bearing plants exhibit global distribution patterns, with greater diversity concentrated in tropical regions, including neotropical forests where families like Bignoniaceae and Passifloraceae thrive.^[11] For instance, Cucurbitaceae, with around 120 genera and 760 species, is largely tropical.^[20] In Convolvulaceae, the parasitic genus Cuscuta (dodder) features twining, tendril-like stems across over 200 species, often in temperate and tropical zones.^[21] This tropical emphasis reflects evolutionary convergence in climbing strategies across disparate lineages.^[11]

Functional Biology

Sensory Mechanisms

Tendrils primarily detect mechanical stimuli through thigmoreceptors located in the epidermal cells at the growing tip, which are highly sensitive to contact. These receptors activate mechanosensitive ion channels in the plasma membrane, allowing influx of ions such as calcium (Ca²⁺) and leading to rapid membrane depolarization.^[22] In pea (Pisum sativum) tendrils, even a minimal force equivalent to a 0.25 mg thread can trigger detection, demonstrating sensitivity exceeding that of human touch receptors.^[22] Upon stimulation, touch perception initiates intracellular calcium signaling, including transient Ca²⁺ elevations and propagating waves that serve as second messengers to activate downstream pathways. In cucumber (Cucumis sativus) tendrils, contact with a support upregulates genes involved in ion transport and transmembrane signaling, with pharmacological inhibition of calcium fluxes blocking the subsequent response.^[23] Glutamate receptor-like proteins (GLRs), particularly from the GLR3 family, play a key role in this process; three such genes (GLR3.7, GLR3.5, GLR3.4) are significantly upregulated during the acquisition of touch sensitivity, and antagonists like CNQX and DNQX reduce tendril bending by over 50% in experiments.^[23] In addition to touch, tendrils integrate other environmental cues for oriented growth. Negative phototropism directs tendril tips away from light sources via blue-light-sensing phototropins, which modulate auxin distribution to promote unequal elongation.^[24] Gravitropism, mediated by sedimenting amyloplasts in statocytes, influences tendril orientation against gravity, ensuring upward exploration in climbing species.^[25] In parasitic plants like dodder (Cuscuta pentagona), chemoreception supplements these mechanisms; seedlings detect host-specific volatile organic compounds (e.g., green leaf volatiles) from several centimeters away, directing twining stems toward suitable hosts via differential growth.^[26] Representative examples illustrate the speed and specificity of these senses. Pea tendrils respond to brief contact with a stake or gentle stroking within seconds to minutes, initiating ion fluxes that propagate along the organ.^[27]

Attachment and Support Functions

Tendrils serve as specialized structures for anchorage, allowing climbing plants to attach to external supports such as other vegetation or inanimate objects, thereby facilitating vertical growth toward light sources and optimizing access to sunlight essential for photosynthesis.^[28] This adaptation enables vines to exploit canopy positions, where light availability is higher, resulting in improved photosynthetic performance compared to unsupported ground-dwelling plants.^[29] In response to tactile stimuli detected through sensory mechanisms, tendrils initiate coiling to secure this attachment.^[5] Beyond primary climbing roles, tendrils fulfill secondary functions in specific plant groups. In carnivorous species like Nepenthes, the tendrils extending from leaf tips coil around nearby structures to bear the weight of mature pitchers, supporting the plant's vining habit in humid, forested environments.^[30] In parasitic plants such as Cuscuta, the slender, tendril-like stems encircle host plants for initial attachment, after which haustoria—specialized penetrating organs—invade the host's vascular tissues to extract nutrients.^[31] The mechanical robustness of coiled tendrils contributes to their support efficacy. In species like cucumber (Cucumis sativus), tendrils demonstrate a tensile strength of approximately 1.07 MPa at the base, sufficient to withstand detachment forces and maintain stability against environmental stresses such as wind.^[32] This strength arises from lignified tissues that enhance durability post-coiling, preventing structural failure during ascent or under load. These functions yield key adaptive advantages for tendril-bearing plants. By elevating foliage above the forest floor, tendrils minimize competition for limited ground space and resources, allowing efficient resource allocation to growth rather than self-supporting stems.^[33] Additionally, the resulting higher positioning of reproductive structures, such as flowers, promotes enhanced pollination and seed dispersal by increasing exposure to pollinators and wind currents.^[28]

Coiling Mechanisms

Circumnutation

Circumnutation refers to the spontaneous elliptical or circular movements exhibited by growing tendrils, resulting from alternating growth rates on opposite sides of the organ.^[34] These motions, first systematically documented by Charles Darwin in his 1865 study of climbing plants, enable tendrils to explore their surroundings in search of potential supports before any physical contact occurs.^[34] Darwin observed such revolutions in various species, including grapevines (Vitis vinifera), where tendrils complete a full circuit in approximately 2 hours and 15 minutes, tracing irregular paths that enhance the likelihood of encountering vertical structures.^[34] The underlying mechanism involves periodic redistribution of the plant hormone auxin, which promotes differential cell elongation across the tendril's longitudinal axis.^[35] This auxin gradient, influenced by internal oscillatory processes, causes one side of the tendril to elongate more rapidly than the other, producing the characteristic circling pattern with periods typically ranging from 1 to 3 hours per rotation.^[35] In grapevines, for instance, tendrils perform sweeping motions that can span up to 180 degrees, allowing them to scan a wide arc for stakes or other supports during their extension phase.^[36] These movements serve a critical exploratory function, positioning tendrils to maximize contact opportunities in heterogeneous environments.^[37] Circumnutation directionality is adjustable by external cues such as light and gravity; a 2019 study on pea tendrils demonstrated that unidirectional light directs the circling toward the source, while gravitational pull influences downward trajectories in unsupported scenarios, optimizing search efficiency.^[38] Upon eventual contact with a support, this pre-contact motion transitions to more targeted responses for attachment.^[38]

Thigmotropism and Contact Coiling

Thigmotropism in tendrils refers to the directional growth response triggered by mechanical contact, such as touch from a potential support, which induces rapid coiling to secure attachment. Upon sensing the stimulus, typically at the sensitive tip, the tendril bends toward the contact point, initiating a helical wrapping that occurs within 5 to 10 minutes, allowing quick anchorage before the growing apex moves away.^[39]^[40] The cellular basis of contact coiling involves differential turgor loss on the contacted side, driven by activation of plasma membrane H+-ATPase pumps that extrude protons, acidifying the cell wall apoplast and promoting loosening or contraction in targeted tissues. This process is amplified by ion fluxes, including calcium influx through mechanosensitive channels that propagate depolarization signals, alongside the roles of gamma-aminobutyric acid (GABA) and jasmonate as key signaling molecules that enhance coiling intensity. Specialized gelatinous fibers (G-fibers), composed of cellulose microfibrils in a helical arrangement, contract asymmetrically—shortening more on the inner side—transforming the tendril into a tight helix while maintaining structural integrity.^[40]^[23]^[41]^[11]^[42] Tendril perversion emerges as a critical adaptation during coiling, where the helix abruptly reverses handedness—typically from left- to right-handed or vice versa—at or near the attachment point, creating a counter-twist that distributes tension evenly and prevents slippage for a more secure grip. Charles Darwin first described this counter-twisting in detail, noting its prevalence in various climbing species to optimize hold without requiring additional energy expenditure.^[43]^[44] In pea plants (Pisum sativum), tendrils demonstrate this mechanism effectively by forming 5 to 10 tight coils around thin supports like wires upon tactile stimulation, with post-coiling contraction increasing tensile strength up to several newtons to bear the vine's weight against gravity and wind.^[45]

Specialized Responses

Self-Discrimination

Self-discrimination in plant tendrils refers to the ability to distinguish and avoid coiling around supports from the same individual or conspecific plants, preventing self-entanglement and intraspecific competition. In the vine Cayratia japonica, this behavior is mediated by two complementary mechanisms: physiological connection for self-recognition and contact chemoreception for detecting conspecific cues. When a tendril contacts a part of the same plant that remains physiologically connected via vascular tissue, coiling is significantly inhibited compared to severed self-parts, where coiling rates increase to levels similar to non-self supports. This physiological mediation ensures tendrils avoid tangling with the parent plant, promoting efficient upward growth.^[46] For conspecific discrimination, tendrils employ contact chemoreception to detect oxalate compounds, which are abundant in C. japonica leaves (soluble oxalate concentration averaging 1.2–2.5 mg/g fresh weight). Upon touch, tendrils avoid coiling around live conspecific leaves, with coiling observed in only about 10% of no-choice trials, compared to over 80% coiling around heterospecific leaves like those of Setaria viridis. In choice experiments, tendrils preferentially coiled around heterospecific supports 100% of the time, bypassing conspecific ones. Artificial supports coated with calcium oxalate elicited similar avoidance (coiling rate <20%), confirming oxalates as the key inhibitory cue, while uncoated or low-oxalate artificial objects were readily grasped.^[47] This selective avoidance provides an evolutionary advantage by reducing competition for space and resources among genetically similar individuals, enhancing overall vine stability on diverse supports such as trees or artificial structures. Experimental evidence highlights the distinction between live and artificial conspecific mimics: tendrils coiled around oxalate-free replicas of conspecific leaves but rejected those treated with leaf extracts containing oxalates, underscoring the role of chemical identity in decision-making. Related behaviors include a bias toward inanimate objects or heterospecific plants, which offer reliable anchorage without the risk of mutual interference. Such self-discrimination has been observed across vine families like Vitaceae and Bignoniaceae, suggesting a widespread adaptive trait in climbing plants. A 2025 study further elucidates that self/non-self discrimination in C. japonica tendrils integrates physiological connections and contact chemoreception, enhancing avoidance of intraspecific entanglement.^[47]^[46]^[48]^[49]

Chemical and Environmental Interactions

In parasitic plants such as Cuscuta species, tendrils exhibit chemotropism by orienting toward host volatiles, including those emitted by tomato plants (Solanum lycopersicum), to facilitate attachment and parasitism. This directed growth is mediated by airborne chemical cues that guide seedling tendrils over distances of several centimeters, enabling host location without physical contact.^[50] Environmental factors significantly influence tendril functionality, particularly through effects on coiling dynamics. Temperature modulates coiling rates in pea (Pisum sativum) tendrils, with optimal curvature occurring between 16°C and 30°C, where geostimulated growth and coiling are maximized after initial exposure.^[51] Outside this range, coiling efficiency declines, potentially limiting attachment success in varying climates. Water availability also impacts tendril mechanics; under drought stress, reduced turgor pressure correlates with decreased tensile force generation during coiling in species like Passiflora caerulea, leading to structural adaptations that enhance stiffness for support.^[52] Tendril exudates and surface secretions interact with microbial communities and environmental pollutants, potentially conferring protective effects. Extracts from grapevine (Vitis vinifera) tendrils demonstrate antifungal activity against phytopathogenic fungi such as Botrytis cinerea and Phytophthora citrophthora, inhibiting mycelial growth through phenolic compounds and other secondary metabolites.^[53] These properties suggest that tendril exudates may contribute to defense against microbial colonization at attachment sites, though direct studies on exudate-specific interactions with pollutants remain limited. Recent research highlights molecular responses in tendrils to herbivory cues, particularly involving jasmonate pathways. The stem parasite Cuscuta australis transfers herbivory signals from attacked plants to uninfested tomato hosts via bridges, inducing jasmonic acid (JA)-mediated gene expression and defense enzyme activity, such as trypsin proteinase inhibitors, across the parasite-host interface.^[54] Post-2019 studies reveal that host JA pathways regulate transcriptomic responses in Cuscuta campestris during attachment, with jasmonate signaling influencing parasitism intensity in systems like tobacco-dodder interactions under insect feeding pressure.^[55] These findings underscore jasmonate-mediated changes as a key mechanism for responsiveness to herbivory signals in parasitic tendrils.

Ecological and Applied Aspects

Role in Ecosystems

Tendril-bearing climbers, such as those in the genera Clematis and Vitaceae, play a pivotal role in facilitating forest stratification by extending from the understory to the canopy, thereby creating interconnected vertical structures that enhance habitat complexity in tropical ecosystems. These connections form layered networks often described as architecturally intricate frameworks, supporting a diverse array of epiphytes, arthropods, and vertebrates that rely on the resulting microhabitats for foraging and nesting. In Neotropical rainforests, lianas and climbers, including tendril types, contribute up to 25% of woody species diversity, promoting overall biodiversity by increasing resource partitioning across strata.^[56] In ecological succession, tendril vines accelerate habitat recovery following disturbances like storms or logging by rapidly recolonizing exposed areas and stabilizing soil through their dense ground cover and root systems. This rapid regeneration, often from persistent seed banks in the soil, helps retain nutrients that would otherwise leach from bare surfaces, facilitating the establishment of later-successional species in secondary forests. For instance, in disturbed tropical sites, tendril climbers like Bignonia species outpace tree regrowth, temporarily dominating to prevent erosion and promote community reassembly.^[57] Tendril climbers engage in complex interactions within ecosystems, competing intensely with host trees for light and space while forming mutualistic relationships with seed dispersers. By overtopping trees, lianas including tendril-bearing species reduce canopy tree growth rates by up to 50% in some tropical settings, altering forest dynamics through resource suppression.^[58] Conversely, their fruits attract frugivores such as birds and bats, which in turn disperse liana seeds across landscapes, enhancing plant recruitment in fragmented habitats. Parasitic tendril species like Cuscuta (dodder) act as keystone suppressors, targeting dominant hosts to reduce their biomass and promote understory diversity, thereby functioning as ecosystem engineers that increase overall community heterogeneity. Tendrils confer climate resilience to climbers in arid and semi-arid ecosystems by enabling vertical growth to access moister canopy environments, effectively escaping drought-stressed understories.^[59] In seasonal tropics, this adaptation correlates with higher liana prevalence where precipitation is lower and variability higher.^[59] Under projected global warming, liana and tendril climber abundance is expected to rise; as of 2025, meta-analyses indicate an average annual increase of about 1.7%, potentially leading to 10-24% rises over decades due to enhanced CO2 fertilization and altered disturbance regimes, shifting ecosystem carbon dynamics.^[60]^[58]^[61]

Human Uses and Biomimicry

Tendril-bearing crops, such as grapes (Vitis vinifera) and peas (Pisum sativum), rely on trellising systems where tendrils attach to wires or posts, providing structural support that elevates vines off the ground to enhance sunlight exposure, air circulation, and pollination.^[62]^[63] This practice facilitates better disease management and facilitates mechanical harvesting, contributing to increased crop yields through optimized growth conditions.^[64] Breeding programs for these crops often target tendril strength and attachment efficiency to improve vine stability and overall productivity, with molecular studies on tendril development informing genetic selections for enhanced fruitfulness and quality.^[65] In biomimicry, plant tendrils have inspired designs in soft robotics, particularly for grippers that replicate coiling mechanisms to achieve gentle yet secure object handling. These devices exploit asymmetric contraction of internal fiber ribbons, akin to the G-fibers in natural tendrils, enabling adaptive grasping in unstructured environments without rigid components.^[66]^[67] For instance, tendril-like soft robots developed in the early 2020s use material arrangements to coil around scaffolds, mimicking how climbing plants anchor themselves, which has applications in delicate manipulation tasks such as picking fragile produce or handling irregular objects.^[68] Recent advancements, including pneumatic entanglement grippers (PEGrip) and angle-programmed helical trajectories, further enhance precision and strength in these bio-inspired systems, demonstrating ultragentle yet robust performance.^[69]^[70] Tendril structures have also influenced medical innovations, particularly in the development of self-healing adhesives modeled after the perversion in coiled tendrils—a helical reversal that connects opposite-handed coils and distributes mechanical stress. This feature allows tendrils to withstand impacts and recover from deformation, inspiring adhesive materials that autonomously repair micro-damage for applications in wound closure and tissue engineering.^[71]^[72] Studies on passionflower (Passiflora) tendrils highlight how their biomechanics could translate to resilient, biocompatible glues that maintain adhesion under dynamic conditions, reducing the need for invasive interventions.^[73]

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Climbing plants may be conveniently divided into those which spirally twine round a support, those which ascend by the movement of the foot-stalks or tips of ...Missing: perversion | Show results with:perversion
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[PDF] The Mechanics and Dynamics of Tendril Perversion in Climbing Plants
Tendril perversion was a fascinating topic for Charles Darwin as he described it at length ... as a complete qualitative picture of the mechanism involved.
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Physiological Studies on Pea Tendrils - jstor
The coiling response to ventral stimulation became saturated after 3 strokes with the glass tube and remained so for up to 15 strokes, although there was an ...
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Self-discrimination in the tendrils of the vine Cayratia japonica is ...
Sep 7, 2015 · Self-discrimination in roots may be an adaptation to minimize wasteful below-ground competition with self [13] by changing root growth direction ...Missing: reduced | Show results with:reduced
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Vine tendrils use contact chemoreception to avoid conspecific leaves
Mar 1, 2017 · Plants of at least 20 cm in height and with at least one tendril were used. ... calcium oxalate, potassium oxalate and sodium oxalate (Wako Pure ...
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Self-discrimination in vine tendrils of different plant families - PMC
We found that tendrils of the M. charantia and P. caerulea were more likely to coil around non-self plant than self plants, but not in C. sativus. Our findings ...
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Cuscuta europaea plastid apparatus in various developmental stages
Huang et al. predicted that THF1 protein plays a role as a G-protein (GPA1) interacting partner in sugar (D-glucose) signaling pathway.
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Physiological studies on pea tendrils. I. Growth and coiling following ...
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Force Generation in the Coiling Tendrils of Passiflora caerulea - PMC
It is found that, for tendrils of the passion flower Passiflora caerulea, the generated force lies in the range of 6–140 mN, which is sufficient to lash the ...
[49]
Activity of Vitis vinifera Tendrils Extract Against Phytopathogenic Fungi
The in vitro antifungal activity was determined of an ethanolic extract of Vitis vinifera L. tendrils (TVV) against ten plant pathogenic fungi, ...Missing: exudate | Show results with:exudate
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Disclosure of salicylic acid and jasmonic acid-responsive genes ...
Oct 18, 2021 · Stem parasitic plant Cuscuta australis (dodder) transfers herbivory-induced signals among plants. Proc. Natl. Acad. Sci. 114, E6703–E6709 (2017). Article ...
[51]
Double‐Edged Sword Effect of Jasmonoyl‐Isoleucine on the ...
Dec 26, 2024 · This study investigates the role of stress-induced phytohormones on the relationship between field dodder (Cuscuta campestris) and lentil plants (Lens culinaris) ...
[52]
Interspecific Signaling Between the Parasitic Plant and the Host ...
Mar 12, 2020 · Our findings are consistent with previous research showing that Cuscuta plants promote haustorium development by sensing the pressure generated ...Missing: tendrils | Show results with:tendrils
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Patterns of climber distribution in temperate forests of the Americas
... tendrils, adventitious. roots and other adhesive structures. Generally climbers ... In tropical forests, lianas represent about 25% of woody plant species ...<|separator|>
[54]
(PDF) Tropical Vine Growth and the Effects on Forest Succession
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Lianas reduce carbon accumulation and storage in tropical forests
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A Mechanistic Explanation for Global Patterns of Liana Abundance ...
I demonstrate that liana (woody vine) abundance is correlated negatively with mean annual precipitation and positively with seasonality.<|control11|><|separator|>
[57]
Understanding how lianas outcompete trees in a changing world
Aug 12, 2024 · The striking increase in liana (woody vine) abundance in tropical forests is concerning from a climate change perspective.
[58]
Tendril - Grapes
Jun 20, 2019 · Twisting, clinging, slender stem-like structure on vines. Tendrils attach themselves to a trellis or post to provide support for the plant.
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Climbing Plants, Coiling Tendrils & Auxin - Britannica
A tendril is a slender whiplike or threadlike strand, produced usually from the node of a stem, by which a vine or other plant may climb.
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Grape Trellising and Training Basics | USU
This fact sheet discusses basic pruning information and introduces two common training methods suitable for the Utah home garden.
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Tendrils, inflorescences and fruitfulness: A molecular perspective
Aug 6, 2025 · Understanding the regulation of flowering transition in this species can be relevant for the improvement of yield and quality of the crop.
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Plant Tendril Acts as a Spring — Biological Strategy - AskNature
Jul 26, 2023 · “The tendril strikes some object, and quickly curls round and firmly grasps it. In the course of some hours it contracts into a spire, dragging ...
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[PDF] A Plant Tendril-Like Soft Robot That Grasps and Anchors by ... - IRIS
The tendrils coil helically around a scaffold by asymmetric contraction of fibers in their structure, which results in attachment to that scaffold [3]. The ...Missing: 2020s | Show results with:2020s
[64]
(PDF) A Plant Tendril-Like Soft Robot That Grasps and Anchors by ...
Feb 26, 2022 · Some climbing plants use tendrils as efficient strategies to anchor and support their weights while they move in unstructured environments.Missing: 2020s | Show results with:2020s
[65]
PEGrip: A Plant-Tendril-Inspired Passive Entanglement Gripper ...
This work paves the way for the development of soft pneumatic grippers with fail-safe and reliable grasping. Publication: IEEE Robotics and Automation Letters.
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Angle-programmed tendril-like trajectories enable a multifunctional ...
Aug 2, 2023 · We report utilizing angle-programmed tendril-like grasping trajectories for an ultragentle yet ultrastrong and ultraprecise gripper.Missing: coiling contraction 2020s<|separator|>
[67]
Biomechanics and morphology of the coiled tendrils of the climbing ...
Tendril morphometry, tendril anatomy, and plant stem mass. Of the ... Turgescent tendrils had a tendril diameter of 0.30 IQR 0.08 mm, a helix diameter ...<|separator|>
[68]
(PDF) Biomechanics of tendrils and adhesive pads of the climbing ...
These characteristics suggest promising potential for applications in self-healing adhesion systems, rescue devices, military engineering, and beyond. View.Missing: inspirations | Show results with:inspirations
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Biomechanics of tendrils and adhesive pads of the climbing passion ...
Oct 21, 2021 · The climbing passion flower Passiflora discophora features branched tendrils with multiple adhesive pads at their tips allowing it to attach to large-diameter ...Missing: healing inspirations