Identification of quantitative trait loci for sorghum leaf blight resistance
Abstract
Sorghum leaf blight and northern corn leaf blight, both caused by Exserohilum turcicum {(Pass.) K. J. Leonard and Suggs [syn. Setosphaeria turcica (Luttr.) K. J. Leonard and Suggs.]}, are major diseases of sorghum [Sorghum bicolor (L.) Moench] and maize (Zea mays L.), respectively. Examining the genetic architecture of resistance in sorghum will lead to a better understanding of the relationship between resistance in sorghum and maize, which can ultimately enhance management options in both crops. In 2018 and 2019, we evaluated two sorghum recombinant inbred line (RIL) populations for resistance to E. turcicum. The BTx623 × IS3620C and BTx623 × SC155 populations consisted of 235 and 81 RILs, respectively. Resistance in both populations was moderately to highly heritable. We identified a total of six quantitative trait loci (QTL) across the two populations. Three QTL with small- to moderate-effect sizes were identified in the BTx623 × IS3620C population. Three QTL, including a large-effect QTL on chromosome three that explained 24% of the variation, were identified in the BTx623 × SC155 population. We compared the identified QTL with the position of northern corn leaf blight candidate genes and found eight candidate resistance gene orthologs that colocalize with the sorghum leaf blight QTL.more »
- Authors:
-
[1];
[2];
[1];
[1]
- Univ. of Illinois at Urbana-Champaign, IL (United States)
- Texas A & M Univ., College Station, TX (United States)
- 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:
- 1976313
- Grant/Contract Number:
- SC0019189
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Crop Science
- Additional Journal Information:
- Journal Volume: 62; Journal Issue: 4; Journal ID: ISSN 0011-183X
- Publisher:
- Alliance of Crop, Soil, and Environmental Science Societies
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; Agriculture
Citation Formats
Lipps, Sarah, Rooney, William L., Mideros, Santiago X., and Jamann, Tiffany M. Identification of quantitative trait loci for sorghum leaf blight resistance. United States: N. p., 2022.
Web. doi:10.1002/csc2.20751.
Lipps, Sarah, Rooney, William L., Mideros, Santiago X., & Jamann, Tiffany M. Identification of quantitative trait loci for sorghum leaf blight resistance. United States. https://doi.org/10.1002/csc2.20751
Lipps, Sarah, Rooney, William L., Mideros, Santiago X., and Jamann, Tiffany M. Wed .
"Identification of quantitative trait loci for sorghum leaf blight resistance". United States. https://doi.org/10.1002/csc2.20751. https://www.osti.gov/servlets/purl/1976313.
@article{osti_1976313,
title = {Identification of quantitative trait loci for sorghum leaf blight resistance},
author = {Lipps, Sarah and Rooney, William L. and Mideros, Santiago X. and Jamann, Tiffany M.},
abstractNote = {Sorghum leaf blight and northern corn leaf blight, both caused by Exserohilum turcicum {(Pass.) K. J. Leonard and Suggs [syn. Setosphaeria turcica (Luttr.) K. J. Leonard and Suggs.]}, are major diseases of sorghum [Sorghum bicolor (L.) Moench] and maize (Zea mays L.), respectively. Examining the genetic architecture of resistance in sorghum will lead to a better understanding of the relationship between resistance in sorghum and maize, which can ultimately enhance management options in both crops. In 2018 and 2019, we evaluated two sorghum recombinant inbred line (RIL) populations for resistance to E. turcicum. The BTx623 × IS3620C and BTx623 × SC155 populations consisted of 235 and 81 RILs, respectively. Resistance in both populations was moderately to highly heritable. We identified a total of six quantitative trait loci (QTL) across the two populations. Three QTL with small- to moderate-effect sizes were identified in the BTx623 × IS3620C population. Three QTL, including a large-effect QTL on chromosome three that explained 24% of the variation, were identified in the BTx623 × SC155 population. We compared the identified QTL with the position of northern corn leaf blight candidate genes and found eight candidate resistance gene orthologs that colocalize with the sorghum leaf blight QTL. There were also several nucleotide-binding leucine-rich repeat encoding genes within the candidate intervals. Understanding host resistance in multiple species furthers our understanding of the Exserohilum turcicum patho-system.},
doi = {10.1002/csc2.20751},
journal = {Crop Science},
number = 4,
volume = 62,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 2022},
month = {Wed Jun 15 00:00:00 EDT 2022}
}
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