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Genome-wide linkage and association mapping of halo blight resistance in common bean to Race 6 of the globally important bacterial pathogen.
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Tock, Andrew J. , Fourie, Deidré, Walley, Peter G., Holub, E. B., Soler, Alvaro, Cichy, Karen A., Pastor-Corrales, Marcial A., Song, Qijian, Porch, Timothy G., Hart, John P., Vasconcellos, Renato C. C., Vicente, Joana G., Barker, Guy C. and Miklas, Phillip N. (2017) Genome-wide linkage and association mapping of halo blight resistance in common bean to Race 6 of the globally important bacterial pathogen. Frontiers in Plant Science, 8 . doi:10.3389/fpls.2017.01170 ISSN 1664-462X.
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Official URL: http://dx.doi.org/10.3389/fpls.2017.01170
Abstract
Pseudomonas syringae pv. phaseolicola (Psph) Race 6 is a globally prevalent and broadly virulent bacterial pathogen with devastating impact causing halo blight of common bean (Phaseolus vulgaris L.). Common bean lines PI 150414 and CAL 143 are known sources of resistance against this pathogen. We constructed high-resolution linkage maps for three recombinant inbred populations to map resistance to Psph Race 6 derived from the two common bean lines. This was complemented with a genome-wide association study (GWAS) of Race 6 resistance in an Andean Diversity Panel of common bean. Race 6 resistance from PI 150414 maps to a single major-effect quantitative trait locus (QTL; HB4.2) on chromosome Pv04 and confers broad-spectrum resistance to eight other races of the pathogen. Resistance segregating in a Rojo × CAL 143 population maps to five chromosome arms and includes HB4.2. GWAS detected one QTL (HB5.1) on chromosome Pv05 for resistance to Race 6 with significant influence on seed yield. The same HB5.1 QTL, found in both Canadian Wonder × PI 150414 and Rojo × CAL 143 populations, was effective against Race 6 but lacks broad resistance. This study provides evidence for marker-assisted breeding for more durable halo blight control in common bean by combining alleles of race-nonspecific resistance (HB4.2 from PI 150414) and race-specific resistance (HB5.1 from cv. Rojo).
| Item Type: | Journal Article | ||||||||
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| Subjects: | Q Science > QR Microbiology S Agriculture > SB Plant culture |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||
| Library of Congress Subject Headings (LCSH): | Common bean -- Diseases and pests, Common bean -- Disease and pest resistance -- Genetic aspects, Plant genome mapping, Pseudomonas syringae, Halo-blight | ||||||||
| Journal or Publication Title: | Frontiers in Plant Science | ||||||||
| Publisher: | Frontiers Media S.A. | ||||||||
| ISSN: | 1664-462X | ||||||||
| Official Date: | 7 July 2017 | ||||||||
| Dates: |
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| Volume: | 8 | ||||||||
| DOI: | 10.3389/fpls.2017.01170 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||
| Date of first compliant deposit: | 10 July 2017 | ||||||||
| Date of first compliant Open Access: | 11 July 2017 | ||||||||
| Funder: | Midlands Integrative Biosciences Training Partnership (MIBTP), Biotechnology and Biological Sciences Research Council (Great Britain) (BBSRC) | ||||||||
| Grant number: | BB/L011646/1 |
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