Drought-triggered repression of miR166 promotes drought tolerance in soybean

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外文摘要：Drought stress limits agricultural productivity worldwide.Identifying and characterizing genetic compo-nents of drought stress-tolerance networks may improve crop resistance to drought stress.We show that the regulatory module formed by miR166 and its target gene,ATHB14-LIKE,functions in the regulation of drought tolerance in soybean(Glycine max).Drought stress represses the accumulation of miR166,lead-ing to upregulation of its target genes.Optimal knockdown of miR166 in the stable transgenic line GmSTTM166 conferred drought tolerance without affecting yield.Expression of ABA signaling pathway genes was regulated by the miR166-mediated regulatory pathway,and ATHB14-LIKE directly activates some of these genes.There is a feedback regulation between ATHB14-LIKE and MIR166 genes,and ATHB14-LIKE inhibits MIR166 expression.These findings reveal that drought-triggered regulation of the miR166-mediated regulatory pathway increases plants drought resistance,providing new insights into drought stress regulatory network in soybean.

外文关键词：

SoybeanDrought stressmiRNAABA signaling

作者：

Chen Zhao、Jingjing Ma、Chen Yan、Yu Jiang、Yaohua Zhang、Yudan Lu、Ye Zhang、Suxin Yang、Xianzhong Feng、Jun Yan

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作者单位：

School of Life Sciences,East China Normal University,Shanghai 200241,China

Key Laboratory of Soybean Molecular Design Breeding,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,Jilin,China

基金：

Projects of Science and Technology of ShanghaiProjects of Science and Technology of ShanghaiProjects of Science and Technology of ShanghaiStrategic Priority Research Program of the Chinese Academy of SciencesHainan Yazhou Bay Seed Laboratory and China National Seed Group

项目编号：

18PJ140280020ZR141790022N11900400XDA24030303B23YQ1502

出版年：

2024

DOI：

10.1016/j.cj.2023.12.005

作物学报(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.12(1)

参考文献量36