Loci and candidate gene identification for resistance to Phytophthora sojae via association analysis in soybean [Glycine max (L.) Merr.]

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• 作者：Lihong Li ; Na Guo ; Jingping Niu ; Zili Wang ; Xiaoxia Cui…
• 刊名：Molecular Genetics and Genomics
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：291
• 期：3
• 页码：1095-1103
• 全文大小：1,142 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Cell Biology
  Biochemistry
  Microbial Genetics and Genomics
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1617-4623
• 卷排序：291

文摘

Phytophthora sojae is an oomycete soil-borne plant pathogen that causes the serious disease Phytophthora root rot in soybean, leading to great loss of soybean production every year. Understanding the genetic basis of this plant–pathogen interaction is important to improve soybean disease resistance. To discover genes or QTLs underlying naturally occurring variations in soybean P.sojae resistance, we performed a genome-wide association study using 59,845 single-nucleotide polymorphisms identified from re-sequencing of 279 accessions from Yangtze-Huai soybean breeding germplasm. We used two models for association analysis. The same strong peak was detected by both two models on chromosome 13. Within the 500-kb flanking regions, three candidate genes (Glyma13g32980, Glyma13g33900, Glyma13g33512) had SNPs in their exon regions. Four other genes were located in this region, two of which contained a leucine-rich repeat domain, which is an important characteristic of R genes in plants. These candidate genes could be potentially useful for improving the resistance of cultivated soybean to P.sojae in future soybean breeding.KeywordsSoybeanPhytophthora sojaeSingle-nucleotide polymorphismsGenome-wide association mapping