Races of Albugo candida causing white blister rust on brassica vegetables in Australia

Petkowski, J. E., Minchinton, E., Thomson, F., Faggian, R and Cahill, D. 2010, Races of Albugo candida causing white blister rust on brassica vegetables in Australia, Acta horticulturae, vol. 867, pp. 133-142.

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Title Races of Albugo candida causing white blister rust on brassica vegetables in Australia
Formatted title Races of Albugo candida causing white blister rust on brassica vegetables in Australia
Author(s) Petkowski, J. E.
Minchinton, E.
Thomson, F.
Faggian, R
Cahill, D.
Journal name Acta horticulturae
Volume number 867
Start page 133
End page 142
Total pages 10
Publisher International Society for Horticultural Science
Place of publication Leuven, Belgium
Publication date 2010-06-30
ISSN 0567-7572
Keyword(s) Albugo candida
Brassica oleracea
Brassica rapa
races
vegetable crops
Summary Albugo Candida races of Australian isolates from B. oleracea var. italica (broccoli), B. rapa var. pekinensis (pak choi) and var. chinensis (Chinese cabbage), and Capsella bursa-pastoris (shepherd's purse) were identified on a set of Brassicaceae hosts. Isolates from broccoli were identified as A. candida race 9 (Ac 9), from pak choi and Chinese cabbage as the sub-race V of Ac 7 or as a mixed population of sub-races A and V of the same race. Isolates from Shepherd's purse were identified as Ac 4. Australian Ac 9 isolates caused white blister disease on broccoli, broccolini, cauliflower, Brussels sprout and other related Brassicaceae hosts including B. nigra (black mustard), B. napus (oilseed rape), and on B. rapa (turnip rape) 'Torch' (a differential host of Ac 7). All cultivars of cabbage (B. oleracea var. capitata) and one new broccoli 'Booster' inoculated with isolates from broccoli were immune to the isolate tested. This result indicates that the Australian A. candida varies from the European one that causes disease on cabbage as well as on other B. oleracea varieties and additionally on shepherd's purse and an American one that causes disease on cabbage. The genotype of B. nigra tested was susceptible to both Ac 9 and Ac 7. This result indicates that B. nigra can serve as a host for both races. This study provides the first record of white blister disease on B. napus ('Hobson' and 'Regent') in Australia.
Language eng
Field of Research 060704 Plant Pathology
Socio Economic Objective 820215 Vegetables
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, International Society for Horticultural Science
Persistent URL http://hdl.handle.net/10536/DRO/DU:30036047

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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