TOP1α Suppresses Lateral Root Gravitropism in Arabidopsis
Plant Signaling and Behavior, 2022 Root gravitropism is important for anchorage and exploration of soil for water and nutrients. It affects root architecture, which is one of the elements that influence crop yield. The mechanism of primary root gravitropism has been widely studied, but it
Jingao Dong, Lin Liu, Xigang Liu
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A minus-end directed kinesin motor directs gravitropism in Physcomitrella patens [PDF]
Nature Communications, 2021 Gravitropism is the process by which plants perceive and respond to gravity. Here the authors identify a minus-end-directed kinesin required for gravity-triggered actin filament rearrangement and negative gravitropic response in the moss Physcomitrella ...
Yufan Li +11 more
doaj +2 more sources
Actin depolymerization by Latrunculin B can either suppress or promote root gravitropism, depending on the developmental stages in Arabidopsis [PDF]
Plant Signaling & BehaviorRoot gravitropism enables plants to optimize water and nutrient uptake, with actin filaments playing a key regulatory role. However, the effects of F-actin depolymerization on gravitropism have been inconsistent. Here, we show that actin depolymerization
Ai Chen, Qianqian Wang, Xianyong Sheng
doaj +2 more sources
Integrating cortical microtubules into plant gravity signaling: dynamics, tubulin phosphorylation, and growth regulation [PDF]
Frontiers in Plant SciencePlant gravity responses depend on coordinated signaling and growth-control mechanisms that convert directional and mechanical stimuli into differential cell expansion.
Md Sifatul Islam, Sarah E. Wyatt
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The LPA1–ITA1–BRXL4 module regulates shoot gravitropism and tiller angle in rice [PDF]
Plant CommunicationsTiller angle is a critical agronomic trait that influences rice plant architecture and yield potential. However, the molecular mechanisms underlying its regulation remain incompletely understood.
Cheng Fang +16 more
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PalKCH1 and PalKCH2 are required for tension wood formation and gelatinous layer deposition in Populus [PDF]
Frontiers in Plant ScienceTension wood (TW) is a graviresponsive xylem tissue exclusive to angiosperm trees that counteracts gravitational stress. Its hallmark is a gelatinous layer (G-layer) in fiber secondary walls, rich in cellulose and low in lignin. Although kinesins mediate
Jianglong Li +4 more
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Frontiers in Plant Science, 2021 Starch granules in the endodermis of plant hypocotyls act as statoliths that promote hypocotyl negative gravitropism—the directional growth of hypocotyls against gravity—in the dark.
Kijong Song +7 more
doaj +1 more source
Microarray analyses and comparisons of upper or lower flanks of rice shoot base preceding gravitropic bending. [PDF]
PLoS ONE, 2013 Gravitropism is a complex process involving a series of physiological pathways. Despite ongoing research, gravitropism sensing and response mechanisms are not well understood.
Liwei Hu +6 more
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LAZY Gene Family in Plant Gravitropism
Frontiers in Plant Science, 2021 Adapting to the omnipresent gravitational field was a fundamental basis driving the flourishing of terrestrial plants on the Earth. Plants have evolved a remarkable capability that not only allows them to live and develop within the Earth’s gravity field,
Zhicheng Jiao +10 more
doaj +1 more source
PROG1 acts upstream of LAZY1 to regulate rice tiller angle as a repressor
Crop Journal, 2023 Rice tiller angle, as a component of plant architecture, affects rice grain yield via plant density. However, the molecular mechanism underlying rice tiller angle remains elusive.
Han Zhang +7 more
doaj +1 more source