Analytical Solution of the Proprio-Graviceptive equation for shoot gravitropism of plants
نویسندگان
چکیده
Renaud Bastien, 2, 3, 4, ∗ Bruno Moulia, 3 Stéphane Douady, and Tomas Bohr Institut Jean-Pierre Bourgin, UMR1318 INRA-AgroParisTech, 78026 Versailles, France INRA, UMR 547 PIAF, F-63100 Clermont Fd Cedex 01 Clermont Université, Université Blaise Pascal, UMR 547 PIAF, BP 10448, F-63000 Clermont-Ferrand Matière et Systèmes Complexes, Université Paris-Diderot, 10 rue Alice Domont et Léonie Duquet, 75025 Paris Cedex 13, France Center of Fluid Dynamics and Department of Physics, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
منابع مشابه
Unifying model of shoot gravitropism reveals proprioception as a central feature of posture control in plants.
Gravitropism, the slow reorientation of plant growth in response to gravity, is a key determinant of the form and posture of land plants. Shoot gravitropism is triggered when statocysts sense the local angle of the growing organ relative to the gravitational field. Lateral transport of the hormone auxin to the lower side is then enhanced, resulting in differential gene expression and cell elong...
متن کاملGenetic evidence that the endodermis is essential for shoot gravitropism in Arabidopsis thaliana.
Shoots of higher plants exhibit negative gravitropism. However, little is known about the mechanism or site of gravity perception in shoots. We have identified two loci that are essential for normal shoot gravitropism in Arabidopsis thaliana. Genetic analysis demonstrated that the shoot gravitropism mutants sgr1 and sgr7 are allelic to the radial pattern mutants, scr and shr, respectively. Char...
متن کاملSGR2, a phospholipase-like protein, and ZIG/SGR4, a SNARE, are involved in the shoot gravitropism of Arabidopsis.
In higher plants, the shoot and the root generally show negative and positive gravitropism, respectively. To elucidate the molecular mechanisms involved in gravitropism, we have isolated many shoot gravitropism mutants in Arabidopsis. The sgr2 and zig/sgr4 mutants exhibited abnormal gravitropism in both inflorescence stems and hypocotyls. These genes probably are involved in the early step(s) o...
متن کاملA unifying modeling of plant shoot gravitropism with an explicit account of the effects of growth
Gravitropism, the slow reorientation of plant growth in response to gravity, is a major determinant of the form and posture of land plants. Recently a universal model of shoot gravitropism, the AC model, was presented, in which the dynamics of the tropic movement is only determined by the conflicting controls of (1) graviception that tends to curve the plants toward the vertical, and (2) propri...
متن کاملBrassinosteroid control of shoot gravitropism interacts with ethylene and depends on auxin signaling components.
PREMISE OF THE STUDY To reach favorable conditions for photosynthesis, seedlings grow upward when deprived of light upon underground germination. To direct their growth, they use their negative gravitropic capacity. Negative gravitropism is under tight control of multiple hormones. METHODS By counting the number of standing plants in a population or by real time monitoring of the reorientatio...
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تاریخ انتشار 2012