生物
发芽
种内竞争
干燥
拟南芥
拟南芥
胚胎
种间竞争
调节器
细胞生物学
植物
进化生物学
生态学
遗传学
突变体
基因
作者
Yanniv Dorone,Steven Boeynaems,Eduardo Flores,Benjamin Jin,Shannon Hateley,Flavia Bossi,Elena Lazarus,Janice Pennington,Emiel Michiels,Mathias De Decker,Katlijn Vints,Pieter Baatsen,George W. Bassel,Marisa S. Otegui,Alex S. Holehouse,Moisés Expósito‐Alonso,Shahar Sukenik,Aaron D. Gitler,Seung Y. Rhee
出处
期刊:Cell
[Elsevier]
日期:2021-08-01
卷期号:184 (16): 4284-4298.e27
被引量:124
标识
DOI:10.1016/j.cell.2021.06.009
摘要
Many organisms evolved strategies to survive desiccation. Plant seeds protect dehydrated embryos from various stressors and can lay dormant for millennia. Hydration is the key trigger to initiate germination, but the mechanism by which seeds sense water remains unresolved. We identified an uncharacterized Arabidopsis thaliana prion-like protein we named FLOE1, which phase separates upon hydration and allows the embryo to sense water stress. We demonstrate that biophysical states of FLOE1 condensates modulate its biological function in vivo in suppressing seed germination under unfavorable environments. We find intragenic, intraspecific, and interspecific natural variation in FLOE1 expression and phase separation and show that intragenic variation is associated with adaptive germination strategies in natural populations. This combination of molecular, organismal, and ecological studies uncovers FLOE1 as a tunable environmental sensor with direct implications for the design of drought-resistant crops, in the face of climate change.
科研通智能强力驱动
Strongly Powered by AbleSci AI