A gain-of-function mutation of OsMAPK6 leads to long grain in rice
A gain-of-function mutation of OsMAPK6 leads to long grain in rice
复制标题
OsMAPK6 的功能获得性突变导致水稻长粒
DOI:
10.1016/j.cj.2021.03.022
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发表时间:
2021-05
期刊:
影响因子:
6.6
通讯作者:
Chuanqing Sun
中科院分区:
文献类型:
--
作者:
Lina Xiong;Lubin Tan;Ran Xu;Zuofeng Zhu;Xianyou Sun;Hongying Sun;Chuanqing Sun
Grain size is one of the most important agronomic traits controlling grain yield. Development of novel germplasm with large grains would be beneficial for crop improvement. We report the genetic identification and functional analysis of theLONG GRAIN 6(LOG6) gene, which is identical toMITOGEN-ACTIVATED PROTEIN KINASE 6(OsMAPK6), affecting grain length of rice. Map-based cloning revealed that the long-grain phenotype oflog6-Dresults from a glutamine (E) to lysine (K) mutation in the conserved TEY motif of OsMAPK6. In near-isogenic lines (NILs), thelog6-Dallele increased grain length and grain yield of Guichao 2 (GC2), Teqing (TQ), and 93–11. Sequence analysis revealed 10OsMAPK6haplotypes, withxian(indica) andgeng(japonica) harboring different haplotypes. Our findings shed light on the function of MAPKs and offer a novel dominant allele for improving the grain yield of rice.
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通讯作者:
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作者:
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通讯作者:
Thorner, J