QTL mapping by GW AS and functional analysis of OsbZIP72 for cold tolerance at rice seedling stage

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外文摘要：Rice is a major crop susceptible to chilling stress.The identification of quantitative trait loci and genes for cold tolerance is crucial for the rice breeding.Of 30 quantitative-trait loci affecting seedling cold toler-ance identified in a genome-wide association study of 540 rice accessions,OsbZIP72 was assigned as the causative gene for one,qCTS9.1.A single-nucleotide polymorphism in its promoter accounted for vari-ation in expression between indica and japonica subspecies.The favorable haplotype of OsbZIP72 origi-nated in wild rice and contributed to the expansion of japonica rice to colder habitats.OsbZIP72 positively regulates genes coding reactive oxygen species(ROS)-scavenging proteins and maintains intra-cellular ROS homeostasis.These findings not only enhanced our understanding of environmental adapta-tion but also provide novel genetic resources and potential targets for molecular design breeding for cold tolerance in rice.

外文关键词：

RiceGWASCold toleranceOsbZIP72ROS

作者：

Yunsong Gu、Haifeng Guo、Huahui Li、Runbin Su、Najeeb Ullah Khan、Jin Li、Shichen Han、Weitong Zhao、Wei Ye、Shilei Gao、Andong Zou、Meng Zhang、Xingming Sun、Zhanying Zhang、Hongliang Zhang、Pingrong Yuan、Jinjie Li、Zichao Li

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作者单位：

Beijing Key Laboratory of Crop Genetic Improvement,College of Agronomy and Biotechnology,China Agricultural University,Beijing 100193,China

Institute of Food Crop Research,Yunnan Academy of Agricultural Sciences,Kunming 650205,Yunnan,China

Sanya Institute of China Agricultural University,Sanya 572025,Hainan,China

Sanya Institute,Hainan Academy of Agricultural Sciences,Sanya 572025,Hainan,China

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出版年：

2024

DOI：

10.1016/j.cj.2024.07.014

作物学报(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.12(6)