Development and Application of Intragenic Markers for 14 Nitrogen-Use Efficiency Genes in Rice (Oryza sativa L.)
文献类型: 外文期刊
第一作者: Li, Pingbo
作者: Li, Pingbo;Li, Zhen;Liu, Xu;Zhang, Hua;Wang, Qingguo;Yao, Fangyin;Li, Nana;Ding, Hanfeng
作者机构: Shandong Acad Agr Sci, Inst Wetland Agr & Ecol, Jinan, Peoples R China;Shandong Acad Agr Sci, Inst Crop Germplasm Resources, Jinan, Peoples R China
关键词: rice; nitrogen-use efficiency; haplotype analysis; intragenic marker; germplasm accession
期刊名称:FRONTIERS IN PLANT SCIENCE ( 2021影响因子:6.627; 五年影响因子:7.255 )
ISSN: 1664-462X
年卷期: 2022 年 13 卷
收录情况: SCI
摘要: Asian cultivated rice consists of two main subspecies, xian/indica (XI) and geng/japonica (GJ), and GJ accessions have significantly lower nitrogen-use efficiency (NUE) than XI accessions. In order to facilitate genetic improvement of NUE in GJ accessions, we conducted haplotype analysis of 14 cloned NUE genes using 36 rice germplasm accessions with high-quality reference genome and developed 18 intragenic markers for elite haplotypes, which were then used to evaluate NUE genes in another 41 genetically diverse germplasm accessions from 12 countries and 71 approved GJ cultivars from northern provinces of China. Our results show that elite haplotypes of 12 NUE genes are mainly existed in XI accessions, but few is distributed in GJ accessions. The number of elite haplotypes carried by an XI accession can reach 10, while that carried by a GJ accession is less than 3. Surprisingly, the elite haplotype of gene DEP1 is nearly fixed in approved GJ cultivars, and elite haplotypes of gene MYB61 and NGR5 have been introduced into some approved GJ cultivars. The developed intragenic markers for NUE genes and evaluated 77 genetically diverse rice accessions could be of great use in the improvement of NUE in GJ cultivars.
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