Genome-Wide Association Mapping of Anthracnose (Colletotrichum sublineolum ) Resistance in the U.S. Sorghum Association Panel

The Plant Genome
Hugo E CuevasXinzhi Ni

Abstract

The productivity and profitability of sorghum [ (L.) Moench] is reduced by susceptibility to fungal diseases, such as anthracnose ( P. Henn.). A limited number of resistant accessions are present in the temperate-adapted germplasm; other exotic sources of resistance are not currently available for breeding programs. Among 335 accessions available to breeders from a previously genotyped sorghum association panel (SAP), we found that 75 were resistant to anthracnose. A phylogenetic analysis of these accessions showed high genetic diversity and multiple resistance sources. Genome-wide association scans (GWAS) were conducted using 268,289 single-nucleotide polymorphisms to identify loci associated with anthracnose resistance. Using logistic regressions for binary measures of resistance responses, we identified three loci within a region on chromosome 5 that have been previously associated with three sources of anthracnose resistance. A GWAS limited to Caudatum germplasm identified an association with a region on chromosome 1 and with the same previous region on chromosome 5. Candidate genes within these loci were related to R-gene families, signaling cascades, and transcriptional reprogramming, suggesting that the resistance respon...Continue Reading

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Sep 28, 2018·The Plant Journal : for Cell and Molecular Biology·Richard E BoylesStephen Kresovich
Feb 28, 2020·G3 : Genes - Genomes - Genetics·Clara M Cruet-BurgosWilfred Vermerris
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Mar 4, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Huaiqing HaoHai-Chun Jing
May 8, 2021·Frontiers in Plant Science·Kibrom B AbrehaMulatu Geleta
Jul 20, 2021·Frontiers in Plant Science·Mallela Venkata Nagesh KumarRumandla Jagadeeshwar
Nov 6, 2021·Planta·Zhanguo XinGeoffrey Morris

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