Leaf-derived ABA regulates rice seed development via a transporter-mediated and temperature-sensitive mechanism

作者：Peng Qin, Guohua Zhang, Binhua Hu, Jie Wu, Weilan Chen, Zhijie Ren, Liu Yulan, Jing Xie, Hua Yuan, Bin Tu, Bingtian Ma, Yuping Wang, Limin Ye, Legong Li, Cheng‐Bin Xiang, Shigui Li · 发表于：Science Advances · 年份：2021 · DOI：10.1126/sciadv.abc8873 · 被引用次数：110 · 研究领域：Plant nutrient uptake and metabolism、Plant Molecular Biology Research、Plant responses to water stress

Both the DG1-mediated long-distance ABA transport efficiency and grain-filling phenotypes are temperature sensitive. Moreover, we extended these mechanistic insights to other cereals by observing similar grain-filling defects in a maize DG1 ortholog mutant. Our study demonstrates that rice uses a leaf-to-caryopsis ABA transport-based mechanism to ensure normal seed development in response to variable temperatures.