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Natural variation in the HAN1 gene confers chilling tolerance in rice and allowed adaptation to a temperate climate

文献类型： 外文期刊

作者： Mao, Donghai 2 ; Xin, Yeyun 3 ; Tan, Yongjun 1 ; Hu, Xiaojie 1 ; Bai, Jiaojiao 4 ; Liu, Zhao-ying 6 ; Yu, Yilan 1 ; Li, L 1 ;

作者机构： 1.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China

2.Huazhong Agr Univ, Natl Ctr Plant Gene Res Wuhan, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Hubei, Peoples R China

3.Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Hunan, Peoples R China

4.Univ Chinese Acad Sci, Coll Adv Agr Sci, Beijing 100049, Peoples R China

5.Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, State Key Lab Plant Genom, Shijiazhuang 050021, Hebei, Peoples R China

6.Hunan Agr Univ, Coll Vet Med, Changsha 410128, Hunan, Peoples R China

7.Univ Toronto, Dept Pharmacol & Physiol, Toronto, ON M5S2E5, Canada

8.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China

9.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China

关键词： rice; jasmonate; chilling tolerance; temperate adaption

期刊名称：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA （ 影响因子：11.205； 五年影响因子：12.291 ）

ISSN： 0027-8424

年卷期： 2019 年 116 卷 9 期

页码：

收录情况： SCI

摘要： Rice (Oryza sativa L.) is a chilling-sensitive staple crop that originated in subtropical regions of Asia. Introduction of the chilling tolerance trait enables the expansion of rice cultivation to temperate regions. Here we report the cloning and characterization of HAN1, a quantitative trait locus (QTL) that confers chilling tolerance on temperate japonica rice. HAN1 encodes an oxidase that catalyzes the conversion of biologically active jasmonoyl-L-isoleucine (JA-Ile) to the inactive form 12-hydroxy-JA-Ile (12OH-JA-Ile) and fine-tunes the JA-mediated chilling response. Natural variants in HAN1 diverged between indica and japonica rice during domestication. A specific allele from temperate japonica rice, which gained a putative MYB cis-element in the promoter of HAN1 during the divergence of the two japonica ecotypes, enhances the chilling tolerance of temperate japonica rice and allows it to adapt to a temperate climate. The results of this study extend our understanding of the northward expansion of rice cultivation and provide a target gene for the improvement of chilling tolerance in rice.

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