Fine physical and genetic mapping of powdery mildew resistance gene MlIW172 originating from wild emmer (Triticum dicoccoides)

S. Ouyang; D. Zhang; J. Han; X. Zhao; Y. Cui; W. Song; N. Huo; Y. Liang; J. Xie; Z. Wang; Q. Wu; Y-X Chen; P. Lu; D-Y Zhang; L. Wang; H. Sun; T. Yang; G. Keeble-Gagnère; R. Appels; J. Doležel; H-Q Ling; M. Luo; Y. Gu; Q. Sun; Z. Liu

doi:10.1371/journal.pone.0100160

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Fine physical and genetic mapping of powdery mildew resistance gene MlIW172 originating from wild emmer (Triticum dicoccoides)

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Fine physical and genetic mapping of powdery mildew resistance gene MlIW172 originating from wild emmer (Triticum dicoccoides)

S. Ouyang, D. Zhang, J. Han, X. Zhao, Y. Cui, W. Song, N. Huo, Y. Liang, J. Xie, Z. Wang, …

PLoS ONE, Vol.9(6)

2014

DOI: https://doi.org/10.1371/journal.pone.0100160

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Abstract

Powdery mildew, caused by Blumeria graminis f. sp. tritici, is one of the most important wheat diseases in the world. In this study, a single dominant powdery mildew resistance gene MlIW172 was identified in the IW172 wild emmer accession and mapped to the distal region of chromosome arm 7AL (bin7AL-16-0.86-0.90) via molecular marker analysis. MlIW172 was closely linked with the RFLP probe Xpsr680-derived STS marker Xmag2185 and the EST markers BE405531 and BE637476. This suggested that MlIW172 might be allelic to the Pm1 locus or a new locus closely linked to Pm1. By screening genomic BAC library of durum wheat cv. Langdon and 7AL-specific BAC library of hexaploid wheat cv. Chinese Spring, and after analyzing genome scaffolds of Triticum urartu containing the marker sequences, additional markers were developed to construct a fine genetic linkage map on the MlIW172 locus region and to delineate the resistance gene within a 0.48 cM interval. Comparative genetics analyses using ESTs and RFLP probe sequences flanking the MlIW172 region against other grass species revealed a general co-linearity in this region with the orthologous genomic regions of rice chromosome 6, Brachypodium chromosome 1, and sorghum chromosome 10. However, orthologous resistance gene-like RGA sequences were only present in wheat and Brachypodium. The BAC contigs and sequence scaffolds that we have developed provide a framework for the physical mapping and map-based cloning of MlIW172.

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Title: Fine physical and genetic mapping of powdery mildew resistance gene MlIW172 originating from wild emmer (Triticum dicoccoides)
Authors/Creators: S. Ouyang (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
D. Zhang (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
J. Han (Author/Creator) - Ministry of Education of the People's Republic of China
X. Zhao (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
Y. Cui (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
W. Song (Author/Creator) - Ministry of Education of the People's Republic of China
N. Huo (Author/Creator) - Western Regional Research Center
Y. Liang (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
J. Xie (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
Z. Wang (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
Q. Wu (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
Y-X Chen (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
P. Lu (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
D-Y Zhang (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
L. Wang (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
H. Sun (Author/Creator) - Institute of Genetics and Developmental Biology
T. Yang (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
G. Keeble-Gagnère (Author/Creator) - Murdoch University
R. Appels (Author/Creator) - Murdoch University
J. Doležel (Author/Creator) - Czech Academy of Sciences, Institute of Experimental Botany
H-Q Ling (Author/Creator) - Institute of Genetics and Developmental Biology
M. Luo (Author/Creator) - University of California, Davis
Y. Gu (Author/Creator) - Western Regional Research Center
Q. Sun (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
Z. Liu (Author/Creator) - State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement/Key Laboratory of Crop Heterosis Research & Utilization, Ministry of Education, China Agricultural University, Beijing, China.
Publication Details: PLoS ONE, Vol.9(6)
Publisher: Public Library of Science
Identifiers: 991005545235207891
Copyright: © 2014 Ouyang et al
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.4 Crop Science; 3.4.96 QTL
Web Of Science research areas: Genetics & Heredity
ESI research areas: Molecular Biology & Genetics