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Title: Genomic Dissection of Anthracnose ( Colletotrichum sublineolum ) Resistance Response in Sorghum Differential Line SC112-14

Journal Article · · G3
 [1]; ORCiD logo [2];  [3]; ORCiD logo [4];  [5]; ORCiD logo [6]
  1. USDA-ARS, Mayaguez (Puerto Rico). Tropical Agriculture Research Station; Univ. of Puerto Rico, Mayaguez (Puerto Rico). Dept. of Biology
  2. USDA-ARS, Mayaguez (Puerto Rico). Tropical Agriculture Research Station; USDA-ARS, College Station, TX (United States). Southern Plains Agriculture Research Center
  3. USDA-ARS, College Station, TX (United States). Southern Plains Agriculture Research Center
  4. USDA-ARS, Tifton, GA (United States). Crop Genetics and Breeding Research
  5. Univ. of Florida, Gainesville, FL (United States). Graduate Program in Plant and Molecular & Cellular Biology
  6. Univ. of Florida, Gainesville, FL (United States). Genetics Inst., Dept. of Microbiology & Cell Science; Univ. of Florida, Gainesville, FL (United States). Florida Center for Renewable Fuels and Chemicals

Sorghum production is expanding to warmer and more humid regions where its production is being limited by multiple fungal pathogens. Anthracnose, caused byColletotrichum sublineolum, is one of the major diseases in these regions, where it can cause yield losses of both grain and biomass. In this study, 114 recombinant inbred lines (RILs) derived from resistant sorghum line SC112-14 were evaluated at four distinct geographic locations in the United States for response to anthracnose. A genome scan using a high-density linkage map of 3,838 single nucleotide polymorphisms (SNPs) detected two loci at 5.25 and 1.18 Mb on chromosomes 5 and 6, respectively, that explain up to 59% and 44% of the observed phenotypic variation. A bin-mapping approach using a subset of 31 highly informative RILs was employed to determine the disease response to inoculation with ten anthracnose pathotypes in the greenhouse. A genome scan showed that the 5.25 Mb region on chromosome 5 is associated with a resistance response to nine pathotypes. Five SNP markers were developed and used to fine map the locus on chromosome 5 by evaluating 1,500 segregating F2:3progenies. Based on the genotypic and phenotypic analyses of 11 recombinants, the locus was narrowed down to a 470-kb genomic region. Following a genome-wide association study based on 574 accessions previously phenotyped and genotyped, the resistance locus was delimited to a 34-kb genomic interval with five candidate genes. All five candidate genes encode proteins associated with plant immune systems, suggesting they may act in synergy in the resistance response.

Research Organization:
US Dept. of Agriculture (USDA), Washington, DC (United States). Agricultural Research Service
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC0014171
OSTI ID:
1627963
Journal Information:
G3, Vol. 10, Issue 4; ISSN 2160-1836
Publisher:
Genetics Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (40)

High outcrossing rates in fields with mixed sorghum landraces: how are landraces maintained? journal August 2008
Elicitors, Effectors, and R Genes: The New Paradigm and a Lifetime Supply of Questions journal September 2007
Two loci in sorghum with NB-LRR encoding genes confer resistance to Colletotrichum sublineolum journal December 2011
Increased Power To Dissect Adaptive Traits in Global Sorghum Diversity Using a Nested Association Mapping Population journal June 2017
Genotype Imputation with Millions of Reference Samples journal January 2016
Sequencing of an Anthracnose-Resistant Sorghum Genotype and Mapping of a Major QTL Reveal Strong Candidate Genes for Anthracnose Resistance journal March 2015
Community Resources and Strategies for Association Mapping in Sorghum journal January 2008
Genome-Wide Association Mapping of Anthracnose ( Colletotrichum sublineolum ) Resistance in the U.S. Sorghum Association Panel journal July 2018
Genome-Wide Association Mapping of Anthracnose ( Colletotrichum sublineolum ) Resistance in NPGS Ethiopian Sorghum Germplasm journal September 2019
Inheritance and molecular mapping of anthracnose resistance genes present in sorghum line SC112-14 journal July 2014
Assessments of genetic diversity and anthracnose disease response among Zimbabwe sorghum germplasm journal January 2014
Assessment of sorghum germplasm from Burkina Faso and South Africa to identify new sources of resistance to grain mold and anthracnose journal January 2016
Recent progress in discovery and functional analysis of effector proteins of fungal and oomycete plant pathogens journal August 2009
A Robust, Simple Genotyping-by-Sequencing (GBS) Approach for High Diversity Species journal May 2011
Anthracnose field evaluation of sorghum germplasm from Botswana [Anthracnose field evaluation of sorghum germplasm from Botswana] journal November 2011
Anthracnose Resistance in Sorghum Germplasm from the Segou Region of Mali journal May 2012
Using Genotyping by Sequencing to Map Two Novel Anthracnose Resistance Loci in Sorghum bicolor journal May 2016
TASSEL-GBS: A High Capacity Genotyping by Sequencing Analysis Pipeline journal February 2014
The plant immune system journal November 2006
Arabidopsis SON1 Is an F-Box Protein That Regulates a Novel Induced Defense Response Independent of Both Salicylic Acid and Systemic Acquired Resistance journal July 2002
Identification of genomic regions that affect grain-mould incidence and other traits of agronomic importance in sorghum journal February 2001
A consensus genetic map of sorghum that integrates multiple component maps and high-throughput Diversity Array Technology (DArT) markers journal January 2009
SNP Markers and Their Impact on Plant Breeding journal January 2012
OneMap: software for genetic mapping in outcrossing species: OneMap journal June 2007
Functional Analysis and Expressional Characterization of Rice Ankyrin Repeat-Containing Protein, OsPIANK1, in Basal Defense against Magnaporthe oryzae Attack journal March 2013
Quantitative Trait Loci Associated with Anthracnose Resistance in Sorghum journal February 2017
GWAS analysis of sorghum association panel lines identifies SNPs associated with disease response to Texas isolates of Colletotrichum sublineola journal January 2019
Evaluation of the Ugandan sorghum accessions for grain mold and anthracnose resistance journal May 2011
Genetic diversity and pathotype determination of Colletotrichum sublineolum isolates causing anthracnose in sorghum journal January 2012
A Pictorial Technique for Mass Screening of Sorghum Germplasm for Anthracnose (Colletotrichum sublineolum) Resistance journal April 2009
PLINK: A Tool Set for Whole-Genome Association and Population-Based Linkage Analyses journal September 2007
Molecular mapping of Cg1, a gene for resistance to anthracnose (Colletotrichum sublineolum) in sorghum journal August 2008
Silicon and Fungicide Effects on Anthracnose in Moderately Resistant and Susceptible Sorghum Lines journal September 2012
Minor-effect QTL for heading date detected in crosses between indica rice cultivar Teqing and near isogenic lines of IR24 journal June 2018
Retrospective genomic analysis of sorghum adaptation to temperate-zone grain production journal June 2013
qqman: an R package for visualizing GWAS results using Q-Q and manhattan plots journal May 2018
Virulence and molecular diversity in Colletotrichum graminicola from Brazil journal April 2005
Effect of population size on the estimation of QTL: a test using resistance to barley stripe rust journal September 2005
A Novel Ankyrin Repeat-rich Gene in Potato, Star, Involved in Response to Late Blight journal April 2009
Efficient and Accurate Construction of Genetic Linkage Maps from the Minimum Spanning Tree of a Graph journal October 2008