文献类型： 外文期刊
作者： Wei, Youbo 1 ; Liu, Sicheng 1 ; Xiong, Dongliang 1 ; Xiong, Zhuang 1 ; Zhang, Zuolin 2 ; Wang, Fei 1 ; Huang, Jianliang 1 ;
作者机构： 1.Huazhong Agr Univ, Coll Plant Sci & Technol, Natl Key Lab Crop Genet Improvement, Minist Agr Key Lab Crop Ecophysiol & Farming Syst, Wuhan 430070, Peoples R China
2.Hubei Acad Agr Sci, Inst Food Crops, Wuhan 430070, Peoples R China
关键词： rice; chlorophyll fluorescence; NPQ; NPQ(T); genome-wide association study; photosynthesis
期刊名称：AGRONOMY-BASEL （ 影响因子：3.949； 五年影响因子：4.117 ）
ISSN：
年卷期： 2022 年 12 卷 12 期
页码：
收录情况： SCI
摘要： Manipulating the photoprotective mechanism has been demonstrated to be an effective way to enhance the photosynthetic productivity of crop plants. NPQ(T) is a chlorophyll fluorescence parameter for rapid estimation and imaging of non-photochemical quenching (NPQ) of excitons in the photoprotective mechanism. However, the variation and genetic basis of NPQ(T) are rarely reported in the Oryza sativa L. In this study, we collected 173 rice cultivars and investigated the NPQ(T) value. We found that the NPQ(T) has a wide variation, although it had not been under-selected in the different subspecies. A genome-wide association study (GWAS) utilizing 1,566,981 high-quality SNPs identified three significant associated signals on chromosomes 02, 05, and 07. Furthermore, one likely candidate gene Os02g0184100, underlying the associated signal on chromosome 02, was uncovered by identifying the expression pattern in flag leaves and testing the correlation between functional polymorphisms and phenotypic variation. The significant SNPs and candidate genes identified in this study provide us a comprehensive understanding of the genetic architecture of NPQ(T) and could be used for genetic improvement of rice photoprotection.
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