Trap‐Closing Chemical Factors of the Venus Flytrap (<i>Dionaea muscipulla</i> Ellis)

Tokunaga, Takashi; Okada, Masahiro; Nakamura, Yoko; Takada, Noboru; Suzuki, Rie; Kondo, Katsuhiko

doi:10.1002/cbic.201000392

Cited by 22 publications

(11 citation statements)

References 34 publications

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“…The rapid closing of leaves (or trap) occurs when at least two sensor hairs respond to stimulus and chemicals are released, signalling specified leaves to close (Ueda et al . ). Debates about chemical signalling challenge our ideas about passivity, by suggesting that plants perceive, process and react to environmental information.…”

Section: The Lively Capacities Of Plantsmentioning

confidence: 97%

The distinctive capacities of plants: re‐thinking difference via invasive species

Head

Atchison

Phillips

2014

Trans Inst British Geog

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The lower status of plants relative to animals, one of the defining characteristics of Western thought, is under challenge from diverse research in botany, philosophy and the more-than-human social sciences including geography. Although the agency of plants is increasingly demonstrated, scholars have yet to fully respond, for plants, to Lulka's call to attend more carefully to the details of nonhuman difference (Lulka D 2009 The residual humanism of hybridity: retaining a sense of the earth Transactions of the Institute of British Geographers NS 34 378-93). This paper advances the concept of the shared capacities of plants, in order to take them seriously in their own terms, and to consider what that means for human-plant relations more generally. We identify four capacities illustrated through plant lives: distinctive materialities; moving independent of humans; sensing and communicating; and taking shape as flexible bodies. Together these provide a sense of plant worlds in which distinct but highly variable plant forms have their own lives, interacting with humans and others in contingent ways. As empirical illustration we explore the adversarial relationship between rubber vine (Cryptostegia grandiflora) and invasive plant managers in northern Australia. In this case biosecurity strategies are affected by and affecting of rubber vine, assembling plants (as individuals and collectives), feral and stock animals, fire and helicopters, human skills and legislation. Recognition of plant capacities challenges us to rethink several concepts often framed against a human norm, including agency, subjectivity and the ethics of killing.

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Section: The Lively Capacities Of Plantsmentioning

confidence: 97%

The distinctive capacities of plants: re‐thinking difference via invasive species

Head

Atchison

Phillips

2014

Trans Inst British Geog

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“…Researchers have also begun to discover the biomolecular components underlying this electrical memory. Ueda and co-workers [47] demonstrated that there exists a threshold of accumulated bio-metabolite for stimulating trap closure. Using bioassays to separate Dionaea extracts, a bioactive polysaccharide was identified that is capable of triggering trap closure in absence of any external mechanical or electrical stimuli.…”

Section: E Electrophysiology Behind the Venus Flytrap's Fast Movementmentioning

confidence: 99%

Fast nastic motion of plants and bioinspired structures

Guo

Dai

Han

et al. 2015

J. R. Soc. Interface.

104

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The capability to sense and respond to external mechanical stimuli at various timescales is essential to many physiological aspects in plants, including selfprotection, intake of nutrients and reproduction. Remarkably, some plants have evolved the ability to react to mechanical stimuli within a few seconds despite a lack of muscles and nerves. The fast movements of plants in response to mechanical stimuli have long captured the curiosity of scientists and engineers, but the mechanisms behind these rapid thigmonastic movements are still not understood completely. In this article, we provide an overview of such thigmonastic movements in several representative plants, including Dionaea, Utricularia, Aldrovanda, Drosera and Mimosa. In addition, we review a series of studies that present biomimetic structures inspired by fast-moving plants. We hope that this article will shed light on the current status of research on the fast movements of plants and bioinspired structures and also promote interdisciplinary studies on both the fundamental mechanisms of plants' fast movements and biomimetic structures for engineering applications, such as artificial muscles, multi-stable structures and bioinspired robots.

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“…The fact that electrical signals are important for sensing insect prey on the surface of a trap in some species of carnivorous plants has been known for centuries (Burdon‐Sanderson, ; Hodick & Sievers, ), but the role of jasmonates in botanical carnivory has been resolved only recently (Ueda et al ., ; Escalante‐Pérez et al ., ; Nakamura et al ., ; Libiaková et al ., ). Such similarity to plant defence is not surprising because it has previously been postulated that botanical carnivory probably evolved from plant defence mechanisms (Hatano & Hamada, ; Mithöfer, ; Rottloff et al ., ; Schulze et al ., ; Nishimura et al ., ; Pavlovič & Saganová, ; Bemm et al ., ; Krausko et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Triggering a false alarm: wounding mimics prey capture in the carnivorous Venus flytrap (Dionaea muscipula)

2017

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In the carnivorous plant Venus flytrap (Dionaea muscipula), the sequence of events after prey capture resembles the well-known plant defence signalling pathway in response to pathogen or herbivore attack. Here, we used wounding to mimic prey capture to show the similarities and differences between botanical carnivory and plant defence mechanisms. We monitored movement, electrical signalling, jasmonate accumulation and digestive enzyme secretion in local and distal (systemic) traps in response to prey capture, the mechanical stimulation of trigger hairs and wounding. The Venus flytrap cannot discriminate between wounding and mechanical trigger hair stimulation. Both induced the same action potentials, rapid trap closure, hermetic trap sealing, the accumulation of jasmonic acid (JA) and its isoleucine conjugate (JA-Ile), and the secretion of proteases (aspartic and cysteine proteases), phosphatases and type I chitinase. The jasmonate accumulation and enzyme secretion were confined to the local traps, to which the stimulus was applied, which correlates with the propagation of electrical signals and the absence of a systemic response in the Venus flytrap. In contrast to plant defence mechanisms, the absence of a systemic response in carnivorous plant may represent a resource-saving strategy. During prey capture, it could be quite expensive to produce digestive enzymes in the traps on the plant without prey.

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Trap‐Closing Chemical Factors of the Venus Flytrap (Dionaea muscipulla Ellis)

Abstract: Be my guest! A macrocyclic hexamer, the structure of which is reminiscent of part of the bamboo‐plant stem (see picture), was directly prepared by the condensation of a glycoluril derivative and formaldehyde. The macrocycle bound halide anions with high affinity and selectivity.

Cited by 22 publications

References 34 publications

The distinctive capacities of plants: re‐thinking difference via invasive species

The distinctive capacities of plants: re‐thinking difference via invasive species

Fast nastic motion of plants and bioinspired structures

Triggering a false alarm: wounding mimics prey capture in the carnivorous Venus flytrap (Dionaea muscipula)

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