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Cholodny-went hypothesis

WebJan 1, 2013 · Since its introduction, the Cholodny–Went hypothesis has received wide acceptance and experimental support (Whippo and Hangarter, 2006; Holland et al., 2009). For phototropism, the … WebDec 16, 2006 · According to the Cholodny–Went hypothesis, gravitropic differential growth is brought about by the redistribution of auxin (indolyl-3-acetic acid, IAA). We reinvestigated the relevance of different auxins and studied the role of ethylene in hypocotyls of sunflower and shoots and roots of rye and maize seedlings.

Cholodny–Went model - Wikipedia

WebJul 1, 1987 · Abstract The existence of different auxin sensitivities in epidermal and subepidermal tissues (KV Thimann, CL Schneider 1938 Plant Physiol 25: 627-641) suggests a refinement to the Cholodny-Went theory which overcomes some of the difficulties associated with it. WebRecent data support the basics of the Cholodny-Went hypothesis, indicating that differential growth is due to redistribution of auxin to the lower sides of gravistimulated … river city steak house https://redhotheathens.com

Gravitropism: Lateral Thinking in Auxin Transport - Current …

Web植物重力生物学的Cholodny-Went假说研究进展 来自 国家科技图书文献中心 喜欢 0 阅读量: 53 作者: 刘承宪 摘要: 本文着重介绍生长素在植物向重性生长反应中作用的研究进 … WebDec 1, 1996 · As early as 1926, Cholodny and Went independently presented an elegant model for gravitropism now generally known as the Cholodny–Went hypothesis [1]. They proposed that gravitropic curvature was dependent upon lateral transport of the plant hormone indole-3-acetic acid — auxin — from the upper to the lower side of a … The Cholodny–Went model for the phototropic movement of shoots was later extended to gravitropism of roots, where auxin was thought to inhibit rather than stimulate growth and to accumulate in the lower side of a root section, causing the root to bend downward. See more In botany, the Cholodny–Went model, proposed in 1927, is an early model describing tropism in emerging shoots of monocotyledons, including the tendencies for the shoot to grow towards the light (phototropism) … See more The model was independently proposed by the Russian scientist Nikolai Cholodny of the University of Kyiv in 1927 and by Frits Warmolt Went of … See more Evidence that supports Cholodny–Went over competing theories was reported by Iino and Briggs in 1984, showing that there was decreased growth on the lighted side of a corn coleoptile and increased growth of the shaded side. Experiments on Arabidopsis thaliana in … See more The theory was widely accepted when first proposed, but began to receive serious criticism in the mid-1980s. Arguments against the model have included views that growth … See more river city street rods

Cholodny-Went revisited: a role for jasmonate in …

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Cholodny-went hypothesis

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WebGravitropism is explained by the Cholodny-Went hypothesis: the basipetal flow of auxin is diverted laterally. The resulting lateral auxin gradient triggers asymmetric growth. However, the... WebIt is concluded that in a great many cases the Cholodny-Went hypothesis is sufficient to account for the growth changes bringing about curvature, though in certain dicotyledonous seedlings differential effects of light on the synthesis of growth inhibitors across the tissue from the lighted to the shaded side are implicated. Expand

Cholodny-went hypothesis

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http://labs.biology.ucsd.edu/estelle/publications/Estelle.1996.pdf WebIn botany, the Cholodny–Went model, proposed in 1927, is an early model describing tropism in emerging shoots of monocotyledons, including the tendencies for the shoot to grow towards the light ( phototropism) and the roots to grow downward ( gravitropism ).

WebApr 1, 1999 · Back to Results The microtubule cytoskeleton does not integrate auxin transport and gravitropism in maize roots The Cholodny-Went hypothesis of gravitropism suggests that the graviresponse is controlled by the distribution of auxin. However, the mechanism of auxin transport during the graviresponse of roots is still unresolved. WebThe anatomy and morphology of these graviresponding organs indicates a certain spatial separation between the sensing region and the responding one, a situation that strongly suggests the requirement of phytohormones as mediators to coordinate the process. The Cholodny-Went hypothesis suggested auxin as the main mediator of gravitropism.

WebThe Cholodny–Went hypothesis, developed in the early 20th century, predicts that in the presence of asymmetric light, auxin will move towards the shaded side and promote …

WebDec 1, 1996 · The Cholodny–Went hypothesis holds that gravitropic curvature of a growing plant organ depends on regulated transport of the plant hormone auxin; new studies of the agravitropic mutant aux1 of Arabidopsis provide strong evidence in …

WebFeb 19, 2003 · In the 1920s, the Cholodny–Went hypothesis and various interpretations of it ever since have proposed that this differential growth within the EZ is mediated by … river city storage louisvilleWebThe debate about the Cholodny-Went theory has stimulated much new research in phototropism and gravitropism. Many researchers currently are investigating tropic curvature using modern time-lapse photography. Others are examining the role of additional plant hormones in regulating phototropism and gravitropism. Additional topics smithsonian museum free ticketsWebOct 9, 2012 · Angus S Murphy Abstract and Figures Light is a key environmental factor that drives many aspects of plant growth and development. Phototropism, the reorientation of growth toward or away from... river city supplyWebThe Cholodny–Went hypothesis holds that gravitropic curvature of a growing plant organ depends on regulated transport of the plant hormone auxin; new studies of the … river city steakhouse pricesWeb20世纪20年代苏联科学家乔罗尼(N. Cholodny)和荷兰科学家文特(F. W. Went)提出的解释重力和单侧光诱导植物器官弯曲生长机制模型。 在重力和单侧光的诱导下,生长素在植物器官伸长区发生单向运输,单侧较高浓 … smithsonian museum free admission dayWebMay 1, 2006 · This research culminated in a model put forth independently by Cholodny (1927) and Went (1926, 1928), which proposed that light-mediated lateral redistribution … river city super sports challenge pc downloadWebApr 1, 1994 · Results indicate that IAA induces growth by a mechanism independent of cell-wall acidification, consistent with the acid-growth hypothesis of FC action. SUMMARY Excised coleoptile segments that were depleted of endogenous auxin after pre-incubation in water respond to the phytotoxin fusicoccin (FC) and the plant hormone auxin (indole-3 … river city sushi red wing mn