Natural variation in the HAN1 gene confers chilling tolerance in rice and allowed adaptation to a temperate climate
| Autor: | Tony Fan, Yongjun Tan, Yeyun Xin, Zhao-ying Liu, Dongping Lu, Xiaojie Hu, Songhu Wang, Jiaojiao Bai, Yongzhong Xing, D. Mao, Caiyan Chen, Yilan Yu, Lanying Li, Longping Yuan, Yuxing Zhu, Ya-Long Guo, Can Peng |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Climate
Quantitative Trait Loci Cyclopentanes Quantitative trait locus Japonica Crop Stress Physiological Botany parasitic diseases Temperate climate Isoleucine Domestication Plant Proteins Multidisciplinary Oryza sativa biology Ecotype fungi food and beverages Genetic Variation Oryza biology.organism_classification Adaptation Physiological humanities PNAS Plus Adaptation |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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