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Auxin‐mediated statolith production for root gravitropism [PDF]
New Phytologist, 2019 Root gravitropism is one of the most important processes allowing plant adaptation to the land environment. Auxin plays a central role in mediating root gravitropism, but how auxin contributes to gravitational perception and the subsequent response is ...
Yuzhou Zhang, Peng He, Xiongfeng Ma
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New Phytologist, 2016 In higher plants, gravitropism proceeds through three sequential steps in the responding organs: perception of gravity signals, signal transduction and asymmetric cell elongation.
Jae Yong Ryu, Chung-Mo Park
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Control of gravitropic orientation. II. Dual receptor model for gravitropism
Functional Plant Biology, 2004Gravitropism of vascular plants has been assumed to require a single gravity receptor mechanism. However, based on the evidence in Part I of this study, we propose that maize roots require two. The first mechanism is without a directional effect and, by itself, cannot give rise to tropism.
Clifford E, LaMotte, Barbara G, Pickard
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BioEssays, 1995
AbstractWhen a plant root is reoriented within the gravity field, it responds by initiating a curvature which eventually results in vertical growth. Gravity sensing occurs primarily in the root tip. It may involve amyloplast sedimentation in the columella cells of the root cap, or the detection of forces exerted by the mass of the protoplast on ...
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AbstractWhen a plant root is reoriented within the gravity field, it responds by initiating a curvature which eventually results in vertical growth. Gravity sensing occurs primarily in the root tip. It may involve amyloplast sedimentation in the columella cells of the root cap, or the detection of forces exerted by the mass of the protoplast on ...
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Plastids and gravitropic sensing
Planta, 1997Data and theories about the identity of the mass that acts in gravitropic sensing are reviewed. Gravity sensing may have evolved several times in plants and algae in processes such as gravitropism of organs and tip-growing cells, gravimorphism, gravitaxis, and the regulation of cytoplasmic streaming in internodal cells of Chara.
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Physiologia Plantarum, 1995
We conducted a series of gravitropic experiments on Avena coleoptiles in the weightlessness environment of Spacelab. The purpose was to test the threshold stimulus, reciprocity rule and autotropic reactions to a range of g‐force stimulations of different intensities and durations The tests avoided the potentially complicating effects of earth's gravity
A H, Brown +3 more
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We conducted a series of gravitropic experiments on Avena coleoptiles in the weightlessness environment of Spacelab. The purpose was to test the threshold stimulus, reciprocity rule and autotropic reactions to a range of g‐force stimulations of different intensities and durations The tests avoided the potentially complicating effects of earth's gravity
A H, Brown +3 more
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Analysis of Plant Root Gravitropism
2022Gravity is a powerful element in shaping plant development, with gravitropism, the oriented growth response of plant organs to the direction of gravity, leading to each plant's characteristic form both above and below ground. Despite being conceptually simple to follow, monitoring a plant's directional growth responses can become complex as variation ...
Richard, Barker +3 more
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Gravitropism and mechanical signaling in plants
American Journal of Botany, 2013Mechanical stress is a critical signal affecting morphogenesis and growth and is caused by a large variety of environmental stimuli such as touch, wind, and gravity in addition to endogenous forces generated by growth. On the basis of studies dating from the early 19th century, the plant mechanical sensors and response components related to gravity can
Masatsugu, Toyota, Simon, Gilroy
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Assessing Gravitropic Responses in Arabidopsis
2016Arabidopsis thaliana was the first higher organism to have its genome sequenced and is now widely regarded as the model dicot. Like all plants, Arabidopsis develops distinct growth patterns in response to different environmental stimuli. This can be seen in the gravitropic response of roots.
Richard, Barker +5 more
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