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Identification of soybean phosphorous efficiency QTLs and genes using chlorophyll fluorescence parameters through GWAS and RNA-seq

文献类型： 外文期刊

作者： Yang, Yuming 1 ; Zhu, Xiuhua 4 ; Cui, Ruifan 1 ; Wang, Ruiyang 1 ; Li, Hongyan 1 ; Wang, Jinshe 2 ; Chen, Huatao 3 ; Zhan 1 ;

作者机构： 1.Henan Agr Univ, Collaborat Innovat Ctr Henan Grain Crops, Zhengzhou, Peoples R China

2.Henan Acad Agr Sci, Zhengzhou Natl Subctr Soybean Improvement, Zhengzhou, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Ind Crops, Nanjing, Peoples R China

4.Henan Xuke Seed Ind Co Ltd, Xuchang, Peoples R China

关键词： Candidate genes; Chlorophyll fluorescence parameters; Genome-wide association study (GWAS); Glycine max; Low-phosphorus; RNA-seq

期刊名称：PLANTA （ 影响因子：4.116； 五年影响因子：4.316 ）

ISSN： 0032-0935

年卷期： 2021 年 254 卷 6 期

页码：

收录情况： SCI

摘要： Main conclusion Soybean phosphorous efficiency QTLs were identified and candidate genes were predicted using chlorophyll fluorescence parameters through GWAS and RNA-seq. Phosphorus (P) is an essential nutrient element for crop growth and development, lack of P uptake seriously affects yield in various crops. Photosynthesis is the basis of crop production, while it is very sensitive to P deficiency. It is of great importance to study the genetic relationship between photosynthesis and P efficiency to provide genetic insight for soybean improvement. In this study, a genome-wide association study (GWAS) was performed using 292,035 SNPs and the ratios of four main chlorophyll fluorescence parameters of 219 diverse soybean accessions under P deficiency and normal P across three experiments. In total, 52 SNPs in 12 genomic regions were detected in association with the four main chlorophyll fluorescence parameters under sufficient or deficient P levels. Combined it with RNA-seq analysis, we predicted three candidate genes for the significant genomic regions. For example, the expression level of the candidate gene (Glyma.18g092900) in P deficiency tolerant accession was three times higher than that of P deficiency sensitive one under phosphorous deficiency condition. This study provides insight into genetic links between photosynthetic and phosphorous efficiency and further functional analysis will provide valuable information for understanding the underlying genetic mechanism to facilitate marker-assisted breeding in soybean.

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