Genome-wide association analysis of ear rot resistance caused by Fusarium verticillioides in maize

被引：14

作者：

de Jong, Guilherme ^{[1
]}

Alves Pamplona, Andrezza Kellen ^{[2
]}

Von Pinho, Renzo Garcia ^{[3
]}

Balestre, Marcio ^{[2
]}

机构：

[1] Univ Fed Lavras, Dept Biol, Lavras, MG, Brazil

[2] Univ Fed Lavras, Dept Stat, Lavras, MG, Brazil

[3] Univ Fed Lavras, Dept Agr, Lavras, MG, Brazil

来源：

GENOMICS | 2018年 / 110卷 / 05期

关键词：

Fusarium verticillioides; Ear rot; Genome-wide association study; Bayesian stochastic search variable; FUMONISIN CONTAMINATION RESISTANCE; LINKAGE DISEQUILIBRIUM; KERNEL INFECTION; SELECTION; CORN; DEACETYLASE; DIVERSITY; GENES; LINES; NAC;

D O I：

10.1016/j.ygeno.2017.12.001

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The identification of causal regions associated with resistance to Fusarium verticillioides can be useful to understand resistance mechanisms and further be used in breeding programs. In this study, a genome-wide association study (GWAS) was conducted to identify candidate markers associated with resistance to the ear rot caused by the fungus F. verticillioides. A total of 242 maize inbred lines were genotyped with 23,153 DArT-seq markers. A total of 12 DArTs were associated with ear rot resistance. Some DArTs were localized close to genes with functions directly related to ear rot resistance, such as a gene responsible for the innate immune response that belongs to the class of NBS-LRR receptors. Some markers were also found to be closely associated with genes that synthesize transcription factors (nactf11 and nactf61), genes responsible for the oxidation-reduction process and peroxidase activity. These results are encouraging since some candidate markers can present functional relationship with ear rot resistance in maize.

引用

页码：291 / 303

页数：13

共 69 条

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