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Phototropism as a Phenomenon of Inhibition
1980The concept of hormonal regulation of plant growth, gradually developed during the first quarter of this century, eventually led to the Cholodny-Went theory of tropistic movements. According to this theory the curving response of stems and roots to unilateral photo-and geotropic stimuli results from an uneven lateral distribution of auxin.
Bruinsma, J., Franssen, J.M., Knegt, E.
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PHOTOTROPISM OF COPROPHILOUS ZYGOMYCETES
Annual Review of Biophysics and Bioengineering, 1977Biological cells sense and react to their environment. This is as true for a neuron in the brain as for a bacterium in the intestine or a coprophilous Zygomycete on dung. To understand these cells on a molecular level scientists have choosen particu lar systems for extensive study. Such a system must respond to measurable stimuli, give clear responses,
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1972
It is stated in every textbook of botany that the direction of growth of stems, roots and leaves is influenced by light as well as by gravity. In this phenomenon of plant growth alterations by unilateral light, referred to as phototropism, the stems are generally positively phototropic, roots generally negatively phototropic (if they respond at all ...
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It is stated in every textbook of botany that the direction of growth of stems, roots and leaves is influenced by light as well as by gravity. In this phenomenon of plant growth alterations by unilateral light, referred to as phototropism, the stems are generally positively phototropic, roots generally negatively phototropic (if they respond at all ...
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Phototropism of Phycomyces Sporangiophores
Nature, 1958THE communication to Nature concerned with phototropism in Phycomyces from Curry and Gruen1 and its extension by Carlile2 may be considered in relation to the critical study of the phenomenon of adaptation undertaken by Delbruck and Reichardt3.
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Phototropism: a family business
Trends in Plant Science, 2001Blue light regulates several developmental processes in plants, including de-etiolation, tropisms and entrainment of the circadian clock. Phototropic responses involve the familiar bending of seedling hypocotyls toward blue light, but also the relocation movements of chloroplasts within the plant cell to optimize light capture.
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1991
Phototropism, the curvature of a growing part of a plant or fungus toward or away from light, is a well known, but not particularly well understood, phenomenon. The general topic of phototropism has been extensively reviewed (Foster, 1977; Dennison, 1979; Hertel, 1980; Gressel and Horwitz, 1982; Pohl and Russo, 1984; Briggs and Baskin, 1988; Firn, 1990;
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Phototropism, the curvature of a growing part of a plant or fungus toward or away from light, is a well known, but not particularly well understood, phenomenon. The general topic of phototropism has been extensively reviewed (Foster, 1977; Dennison, 1979; Hertel, 1980; Gressel and Horwitz, 1982; Pohl and Russo, 1984; Briggs and Baskin, 1988; Firn, 1990;
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1959
Some of the early observations of phototropism in lower plants are reviewed in the classical text books of plant physiology by Sachs (1887), Pfeffer (1903), Jost (1907) and Vines (1886). The history of the development of ideas on this subject has been traced by Weevers (1949) and Stiles (1950), and some aspects have been critically discussed by Du Buy ...
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Some of the early observations of phototropism in lower plants are reviewed in the classical text books of plant physiology by Sachs (1887), Pfeffer (1903), Jost (1907) and Vines (1886). The history of the development of ideas on this subject has been traced by Weevers (1949) and Stiles (1950), and some aspects have been critically discussed by Du Buy ...
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Phototropic Inversion in Phycomyces
Science, 1961Transient reversed bending follows an adequate step-up in light intensity given a bending cell from any direction around its axis, yet the plane of the response is specifically that in which prior phototropic bending occurred. The cell "remembers" what it was doing and reverses this in the ensuing light-growth response.
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Phototropic Compounds of Mercury
Nature, 1923IN NATURE of June 9, p. 775, Messrs. Venkataramaiah and Rao describe “A New Phototropic Compound of Mercury” of the composition which they regard as “the most phototropic compound as yet known”; or that this compound shows appreciable change in colour on exposure to light in less time than that required by any other known phototropic compound. In 1917,
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Studies on phototropic equilibrium and phototropic-geotropic equilibrium in phycomyces
1958Phototropic equilibrium was studied in Stage IV sporangiophores of Phycomyces blakesleeanus by illuminating specimens simultaneously from various directions with two beams of light. The dependence of the equilibrium position upon the angle between the light beams and upon their intensities was investigated and shown to be given by a simple empirical ...
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