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- Title
马铃薯资源晚疫病抗性的全基因组关联分析.
- Authors
蒋 伟; 潘哲超; 包丽仙; 周福仙; 李燕山; 隋启君; 李先平
- Abstract
The mining of broad-spectrum resistance genes is the basis of the breeding of potato varieties with high late blight resistance. In this study, 288 samples of late disease resistance selected by the International Potato Center (CIP) for years were planted and were investigated for two consecutive years, which could provide some theoretical and material basis for breeding of late blight resistant varieties and help to study on disease resistance mechanism. The late blight resistance of each sample was evaluated using AUDPC and sAUDPC values. The population simplified genome sequencing was performed by SLAF-seq and carried out by genome-wide association analysis in order to discover the genetic loci and candidate genes related to late blight resistance. There were wide genetic differences in resistance to late blight among 288 samples. Through genome-wide association analysis, based on five analytical models, a total of 82 loci significantly correlated with late blight resistance were identified. Combined with genomic annotation, there were 54 candidate genes known or likely to be associated with late blight resistance in the association interval. Among them, 23 genes were resistant genes, including late blight resistance gene R1 homolog, Sw-5 homolog (R8) and Rpi-vnt1, as well as gene encoding pleiotropic resistance protein. Five genes encoded MAPK protein and WRKY transcription factor; one gene was involved in the JA pathway; three genes were associated with salicylic acid pathway; six genes were related to the course of the disease; three genes were involved in the synthesis of phenylpropionic acid. Other genes related to resistance to late blight included HMGR gene (2) and cytochrome P450 (21).
- Subjects
INTERNATIONAL Potato Center; CYTOCHROME P-450; SALICYLIC acid; NATURAL immunity; LOCUS (Genetics); TRANSCRIPTION factors; NUCLEOTIDE sequencing; POTATOES
- Publication
Control Theory & Applications / Kongzhi Lilun Yu Yinyong, 2021, Vol 38, Issue 1, p245
- ISSN
1000-8152
- Publication type
Article
- DOI
10.3724/SP.J.1006.2021.04099