Genome-wide association analysis of resistance toPythium ultimumin common bean (Phaseolus vulgaris)

被引:7
作者
Dramadri, Isaac Onziga [1 ]
Amongi, Winnyfred [2 ]
Kelly, James D. [3 ]
Mukankusi, Clare Mugisha [2 ]
机构
[1] Makerere Univ Reg Ctr Crop Improvement MaRCCI, Dept Agr Prod, Coll Agr & Environm Sci, Kampala, Uganda
[2] Int Ctr Trop Agr CIAT, Kampala, Uganda
[3] Michigan State Univ, Dept Plant Soil & Microbial Sci, E Lansing, MI 48824 USA
基金
美国食品与农业研究所;
关键词
Andean diversity panel; Defensin-like (DEFL) protein family; Pythiumisolate MS61; Pythiumroot rot; Subtilase family protein; ROOT-ROT RESISTANCE; QUANTITATIVE TRAIT LOCI; COMPLEX TRAITS; QTL; IDENTIFICATION; ARCHITECTURE; GENE;
D O I
10.1111/pbr.12855
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Pythium root rot (PRR) caused byPythiumspp. is an important root rot disease affecting common bean productivity. The objective of this study was to conduct a genome-wide association analysis of resistance to PRR in the common bean of Andean gene pool using single nucleotide polymorphism (SNP) markers. About 260 genotypes of the Andean diversity panel (ADP) were evaluated under screen house conditions usingPythium ultimumisolate MS61 in Uganda. Sixteen significant signals for resistance to PRR were detected on chromosomes Pv01, Pv02, Pv04, Pv05 and Pv09 using 260K GBS-based and 6K Beadchip SNPs. Common significant signals were detected on Pv02 and Pv09 for PRR. Positional candidate genes associated with significant SNPs on Pv02 werePhvul.002G119700, 16.97 kb near marker S02_25507837 (25.50 Mb), encoding Subtilase family protein, andPhvul.002G278400near marker ss715645959 (44.79 Mb) encoding Defensin-like (DEFL) protein involved in plant defence responses. Based on the relatively high heritability estimates observed for PRR in this study, significant SNP markers associated with genomic regions for resistance to PRR could be validated for marker-assisted breeding in Andean beans.
引用
收藏
页码:1168 / 1180
页数:13
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