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Sources and origin of resistance to Xanthomonas campestrispv.campestris in Brassica Genomes
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Taylor, J. D., Conway, J., Roberts, S. J., Astley, D. and Vicente, Joana G. (2002) Sources and origin of resistance to Xanthomonas campestrispv.campestris in Brassica Genomes. Phytopathology, 92 (1). pp. 105-111. doi:10.1094/PHYTO.2002.92.1.105 ISSN 0031-949X.
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Official URL: http://dx.doi.org/10.1094/PHYTO.2002.92.1.105
Abstract
Two hundred and seventy-six accessions of mainly Brassica spp. were screened for resistance to Xanthomonas campestris pv. campestris races. In Brassica oleracea (C genome), the majority of accessions were susceptible to all races, but 43% showed resistance to one or more of the rare races (2, 3, 5, and 6) and a single accession showed partial resistance to races 1, 3, 5, and 6. Further searches for resistance to races 1 and 4, currently the most important races worldwide, and race 6, the race with the widest host range, were made in accessions representing the A and B genomes. Strong resistance to race 4 was frequent in B. rapa (A genome) and B. napus (AC genome), indicating an A genome origin. Resistance to races 1 and 4 was present in a high proportion of B. nigra (B genome) and B. carinata (BC genome) accessions, indicating a B genome origin. B. juncea (AB genome) was the most resistant species, showing either strong resistance to races 1 and 4 or quantitative resistance to all races. Potentially race-nonspecific resistance was also found, but at a lower frequency, in B. rapa, B. nigra, and B. carinata. The combination of race-specific and race-nonspecific resistance could provide durable control of black rot of crucifers.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||
Journal or Publication Title: | Phytopathology | ||||
Publisher: | American Phytopathological Society | ||||
ISSN: | 0031-949X | ||||
Official Date: | 2002 | ||||
Dates: |
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Volume: | 92 | ||||
Number: | 1 | ||||
Page Range: | pp. 105-111 | ||||
DOI: | 10.1094/PHYTO.2002.92.1.105 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Open Access (Creative Commons) |
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