Genetics and Molecular Mapping of Black Rot Resistance Locus Xca1bc on Chromosome B-7 in Ethiopian Mustard (Brassica carinata A. Braun)

Black rot caused by Xanthomonas campestris pv. campestris (Pam.) Dowson is the most destructive disease of cauliflower causing huge loss to the farmers throughout the world. Since there are limited sources of resistance to black rot in B. oleracea (C genome Brassica), exploration of A and B genomes...

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Veröffentlicht in:PloS one 2016-03, Vol.11 (3), p.e0152290-e0152290
Hauptverfasser: Sharma, Brij Bihari, Kalia, Pritam, Yadava, Devendra Kumar, Singh, Dinesh, Sharma, Tilak Raj
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description Black rot caused by Xanthomonas campestris pv. campestris (Pam.) Dowson is the most destructive disease of cauliflower causing huge loss to the farmers throughout the world. Since there are limited sources of resistance to black rot in B. oleracea (C genome Brassica), exploration of A and B genomes of Brassica was planned as these were thought to be potential reservoirs of black rot resistance gene(s). In our search for new gene(s) for black rot resistance, F2 mapping population was developed in Brassica carinata (BBCC) by crossing NPC-17, a susceptible genotype with NPC-9, a resistant genotype. Out of 364 Intron length polymorphic markers and microsatellite primers used in this study, 41 distinguished the parental lines. However, resistant and susceptible bulks could be distinguished by three markers At1g70610, SSR Na14-G02 and At1g71865 which were used for genotyping of F2 mapping population. These markers were placed along the resistance gene, according to order, covering a distance of 36.30 cM. Intron length polymorphic markers At1g70610 and At1g71865 were found to be linked to black rot resistance locus (Xca1bc) at 6.2 and 12.8 cM distance, respectively. This is the first report of identification of markers linked to Xca1bc locus in Brassica carinata on B-7 linkage group. Intron length polymorphic markers provided a novel and attractive option for marker assisted selection due to high cross transferability and cost effectiveness for marker assisted alien gene introgression into cauliflower.
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Braun)</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2016-03-29</date><risdate>2016</risdate><volume>11</volume><issue>3</issue><spage>e0152290</spage><epage>e0152290</epage><pages>e0152290-e0152290</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Black rot caused by Xanthomonas campestris pv. campestris (Pam.) Dowson is the most destructive disease of cauliflower causing huge loss to the farmers throughout the world. Since there are limited sources of resistance to black rot in B. oleracea (C genome Brassica), exploration of A and B genomes of Brassica was planned as these were thought to be potential reservoirs of black rot resistance gene(s). In our search for new gene(s) for black rot resistance, F2 mapping population was developed in Brassica carinata (BBCC) by crossing NPC-17, a susceptible genotype with NPC-9, a resistant genotype. Out of 364 Intron length polymorphic markers and microsatellite primers used in this study, 41 distinguished the parental lines. However, resistant and susceptible bulks could be distinguished by three markers At1g70610, SSR Na14-G02 and At1g71865 which were used for genotyping of F2 mapping population. These markers were placed along the resistance gene, according to order, covering a distance of 36.30 cM. Intron length polymorphic markers At1g70610 and At1g71865 were found to be linked to black rot resistance locus (Xca1bc) at 6.2 and 12.8 cM distance, respectively. This is the first report of identification of markers linked to Xca1bc locus in Brassica carinata on B-7 linkage group. Intron length polymorphic markers provided a novel and attractive option for marker assisted selection due to high cross transferability and cost effectiveness for marker assisted alien gene introgression into cauliflower.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>27023128</pmid><doi>10.1371/journal.pone.0152290</doi><oa>free_for_read</oa></addata></record>
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subjects Agricultural economics
Biology and Life Sciences
Black rot
Brassica
Brassica carinata
Brassica juncea
Brassica napus
Brassica oleracea
Brassicaceae
Chromosome Mapping
Chromosome Segregation - genetics
Chromosomes, Plant - genetics
Cost effectiveness
Crop diseases
Crosses, Genetic
Disease resistance (Plants)
Disease Resistance - genetics
Diseases and pests
Gene mapping
Genes
Genes, Plant
Genetic aspects
Genetic Linkage
Genetic Loci
Genetic Markers
Genetics
Genomes
Genomics
Genotype
Genotyping
Laboratories
Loci
Mapping
Markers
Mustard
Mustard (Condiment)
Mustard Plant - genetics
Mustard Plant - immunology
Mustard Plant - microbiology
Phenotype
Plant Diseases - genetics
Plant Diseases - immunology
Plant Diseases - microbiology
Primers
Research and Analysis Methods
Science
Xanthomonas campestris
Xanthomonas campestris - physiology
title Genetics and Molecular Mapping of Black Rot Resistance Locus Xca1bc on Chromosome B-7 in Ethiopian Mustard (Brassica carinata A. Braun)
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