Cell Elongation and Revolving Movement in Phaseolus vulgaris L. Twining Shoots

Caré, Anne-Frangoise; Nefed'ev, Leonid; Bonnet, Bernard; Millet, Bernard; Badot, Pierre‐Marie

doi:10.1093/oxfordjournals.pcp.a029454

Cited by 33 publications

(24 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…• irreversible volume increase resulting in elongation growth • cell shrink/swollen (contraction/relaxation) phenomena • a combination of both phenomena It should be stressed that in Phaseolus vulgaris, 44 epidermis cells in the bending, mobile part of the shoot, the initial length of which ranges from 60-120 μm, display partially reversible changes in the length of the cells (by ca. 10 μm) during shoot growth.…”

Section: Models Of Circumnutation Mechanismmentioning

confidence: 99%

“…46 In Phaseolus vulgaris, it is epidermal cells that display partially reversible changes in the length of the bending, mobile part of the shoot. 44 The endodermal cells (statocytes with amyloplasts functioning as statoliths) also play an important role in circumnutations, as revealed by scr mutants of Arabidopsis and Pharbitis nil. 38,39 Plasmodesmata, by which cells create a continuous system (symplast) facilitating intercellular communication, are equally important.…”

Section: Cellular and Molecular Basis For Circumnutationsmentioning

confidence: 99%

See 1 more Smart Citation

Circumnutation as a visible plant action and reaction

Stolarz

2009

Plant Signaling & Behavior

View full text Add to dashboard Cite

Circumnutation is a helical organ movement widespread among plants. It is variable due to a different magnitude of trajectory (amplitude) outlined by the organ tip, duration of one cycle (period), circular, elliptical, pendulum-like or irregular shape and clock-and counterclockwise direction of rotation. Some of those movement parameters are regulated by circadian clock and show daily and infradian rhythms. Circumnutation is influenced by light, temperature, chemicals and can depend on organ morphology. The diversity of this phenomenon is easier to see now that the digital time-lapse video method is developing fast. Whether circumnutation is an endogenous action, a reaction to exogenous stimuli or has a combined character has been discussed for a long time. Similarly, the relationship between growth and circumnutation is still unclear. In the mechanism of circumnutation, epidermal and endodermal cells as well as plasmodesmata, plasma membrane, ions (Ca 2+ , K + and Cl -), ion channels and the proton pump (H + ATPase) are engaged. Based on these data, the hypothetical electrophysiological model of the circumnutation mechanism has been proposed here. In the recent circumnutation studies, gravitropic, auxin, clock and phytochrome mutants are used and new functions of circumnutation in plants' life have been investigated and described.

show abstract

Section: Models Of Circumnutation Mechanismmentioning

confidence: 99%

Section: Cellular and Molecular Basis For Circumnutationsmentioning

confidence: 99%

Circumnutation as a visible plant action and reaction

Stolarz

2009

Plant Signaling & Behavior

View full text Add to dashboard Cite

show abstract

“…There has been many reports about circumnutation, but how to evaluate circumnutating plant organs is not strictly defined. Some of the investigators used the organ's tip loci as index (Ginzo and Décima 1995, Anderson-Bernadas et al 1997, Shabala and Newman 1997, Hatakeda et al 2003, Stolarz et al 2003, some measured periods of one circumnutation (Spurný 1975, Caré et al 1998) and some measured curvature changes (Zachariassen and Johnsson 1988) for analyzing circumnutating organ. In the present study, we measured the curvature development and the nutation frequency as indices of circumnutating inflorescence stems.…”

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Circumnutation of Arabidopsis thaliana inflorescence stems

Someya¹,

Niinuma²,

Kimura³

et al. 2006

Biologia plant.

View full text Add to dashboard Cite

Time-lapse monitoring using infrared imaging revealed a distinct change in circumnutatory behaviour of Arabidopsis inflorescence stems by dark treatment, which drastically increased curvature and decreased nutation frequency. Reirradiation during dark treatment had different effect on the nutation frequency and the curvature, suggesting that radiation condition controls them through different mechanism.Additional key words: curvature development, differential growth, internal oscillator, nutation frequency, revolving movement.

show abstract

“…The process by which a twiner finds a support, generates a helical form, and grips its support has fascinated plant biologists for more than a century (von Mohl 1827;Darwin 1876;von Sachs 1882;Hendricks 1940). Twining plants are remarkable because over an extensive apical region the stem is flexible and undergoes broad circumnutational movements (Darwin & Darwin 1896;Silk & Abou Haidar 1986;Silk 1989;Caré et al 1998) while farther from the apex, the stem forms a strikingly uniform helix ( Darwin 1876;Bell 1958;Baillaud 1968;Putz & Holbrook 1991) that can squeeze a support with considerable force (Silk & Hubbard 1991;Matista & Silk 1997;Scher et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Tensioning the helix: a mechanism for force generation in twining plants

et al. 2009

View full text Add to dashboard Cite

Twining plants use their helical stems to clasp supports and to generate a squeezing force, providing stability against gravity. To elucidate the mechanism that allows force generation, we measured the squeezing forces exerted by the twiner Dioscorea bulbifera while following its growth using time-lapse photography. We show that the development of the squeezing force is accompanied by stiffening of the stem and the expansion of stipules at the leaf base. We use a simple thin rod model to show that despite their small size and sparse distribution, stipules impose a stem deformation sufficient to account for the measured squeezing force. We further demonstrate that tensioning of the stem helix, although counterintuitive, is the most effective mechanism for generating large squeezing forces in twining plants. Our observations and model point to a general mechanism for the generation of the twining force: a modest radial stem expansion during primary growth, or the growth of lateral structures such as leaf bases, causes a delayed stem tensioning that creates the squeezing forces necessary for twining plants to ascend their supports. Our study thus provides the long-sought answer to the question of how twining plants ascend smooth supports without the use of adhesive or hook-like structures.

show abstract

Cell Elongation and Revolving Movement in Phaseolus vulgaris L. Twining Shoots

Cited by 33 publications

References 21 publications

Circumnutation as a visible plant action and reaction

Circumnutation as a visible plant action and reaction

Circumnutation of Arabidopsis thaliana inflorescence stems

Tensioning the helix: a mechanism for force generation in twining plants

Contact Info

Product

Resources

About