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Title: Conserved defense responses between maize and sorghum to Exserohilum turcicum

Abstract

Background: Exserohilum turcicum is an important pathogen of both sorghum and maize, causing sorghum leaf blight and northern corn leaf blight. Because the same pathogen can infect and cause major losses for two of the most important grain crops, it is an ideal pathosystem to study plant-pathogen evolution and investigate shared resistance mechanisms between the two plant species. To identify sorghum genes involved in the E. turcicum response, we conducted a genome-wide association study (GWAS). Results: Using the sorghum conversion panel evaluated across three environments, we identified a total of 216 significant markers. Based on physical linkage with the significant markers, we detected a total of 113 unique candidate genes, some with known roles in plant defense. Also, we compared maize genes known to play a role in resistance to E. turcicum with the association mapping results and found evidence of genes conferring resistance in both crops, providing evidence of shared resistance between maize and sorghum. Conclusions: Using a genetics approach, we identified shared genetic regions conferring resistance to E. turcicum in both maize and sorghum. We identified several promising candidate genes for resistance to leaf blight in sorghum, including genes related to R-gene mediated resistance. We present significant advancementsmore » in the understanding of host resistance to E. turcicum, which is crucial to reduce losses due to this important pathogen.« less

Authors:
; ; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1618610
Alternate Identifier(s):
OSTI ID: 1775501
Grant/Contract Number:  
SC0019189
Resource Type:
Published Article
Journal Name:
BMC Plant Biology
Additional Journal Information:
Journal Name: BMC Plant Biology Journal Volume: 20 Journal Issue: 1; Journal ID: ISSN 1471-2229
Publisher:
Springer Science + Business Media
Country of Publication:
United Kingdom
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; Sorghum leaf blight; Genome-wide association mapping; Quantitative disease resistance; Northern corn leaf blight; Exserohilum turcicum; Setosphaeria turcica; Sorghum

Citation Formats

Zhang, Xiaoyue, Fernandes, Samuel B., Kaiser, Christopher, Adhikari, Pragya, Brown, Patrick J., Mideros, Santiago X., and Jamann, Tiffany M. Conserved defense responses between maize and sorghum to Exserohilum turcicum. United Kingdom: N. p., 2020. Web. doi:10.1186/s12870-020-2275-z.
Zhang, Xiaoyue, Fernandes, Samuel B., Kaiser, Christopher, Adhikari, Pragya, Brown, Patrick J., Mideros, Santiago X., & Jamann, Tiffany M. Conserved defense responses between maize and sorghum to Exserohilum turcicum. United Kingdom. doi:https://doi.org/10.1186/s12870-020-2275-z
Zhang, Xiaoyue, Fernandes, Samuel B., Kaiser, Christopher, Adhikari, Pragya, Brown, Patrick J., Mideros, Santiago X., and Jamann, Tiffany M. Mon . "Conserved defense responses between maize and sorghum to Exserohilum turcicum". United Kingdom. doi:https://doi.org/10.1186/s12870-020-2275-z.
@article{osti_1618610,
title = {Conserved defense responses between maize and sorghum to Exserohilum turcicum},
author = {Zhang, Xiaoyue and Fernandes, Samuel B. and Kaiser, Christopher and Adhikari, Pragya and Brown, Patrick J. and Mideros, Santiago X. and Jamann, Tiffany M.},
abstractNote = {Background: Exserohilum turcicum is an important pathogen of both sorghum and maize, causing sorghum leaf blight and northern corn leaf blight. Because the same pathogen can infect and cause major losses for two of the most important grain crops, it is an ideal pathosystem to study plant-pathogen evolution and investigate shared resistance mechanisms between the two plant species. To identify sorghum genes involved in the E. turcicum response, we conducted a genome-wide association study (GWAS). Results: Using the sorghum conversion panel evaluated across three environments, we identified a total of 216 significant markers. Based on physical linkage with the significant markers, we detected a total of 113 unique candidate genes, some with known roles in plant defense. Also, we compared maize genes known to play a role in resistance to E. turcicum with the association mapping results and found evidence of genes conferring resistance in both crops, providing evidence of shared resistance between maize and sorghum. Conclusions: Using a genetics approach, we identified shared genetic regions conferring resistance to E. turcicum in both maize and sorghum. We identified several promising candidate genes for resistance to leaf blight in sorghum, including genes related to R-gene mediated resistance. We present significant advancements in the understanding of host resistance to E. turcicum, which is crucial to reduce losses due to this important pathogen.},
doi = {10.1186/s12870-020-2275-z},
journal = {BMC Plant Biology},
number = 1,
volume = 20,
place = {United Kingdom},
year = {2020},
month = {2}
}

Journal Article:
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DOI: https://doi.org/10.1186/s12870-020-2275-z

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