Potato leaf infection caused by Colletotrichum coccodes and C. nigrum
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Published:2024-06-03
Issue:1
Volume:170
Page:163-167
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ISSN:0929-1873
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Container-title:European Journal of Plant Pathology
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language:en
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Short-container-title:Eur J Plant Pathol
Author:
Chang Jiang,Crous Pedro W.,Ades Peter K.,Wang Weixia,Liu Fang,Damm Ulrike,Vaghefi Niloofar,Taylor Paul W. J.
Abstract
AbstractColletotrichum coccodes is an important pathogen of potatoes. Recently, the closely related C. nigrum has been reported as an important pathogen of solanaceous crops but not as a pathogen of potato. This study confirms C. coccodes as the most prevalent Colletotrichum species infecting foliar and tuber tissue of potatoes in Australia and the USA. In addition, three isolates from the USA, previously identified as C. coccodes, were re-identified as C. nigrum. The gene loci TUB2, ACT, GAPDH, CHS-1 or HIS3 were all suitable for differentiating C. nigrum from C. coccodes. Australian and USA tuber and foliar isolates of C. coccodes and C. nigrum had similar pathogenicity on detached potato leaves. This is the first report of C. nigrum as a pathogen of potato. Moreover, the recently described C. dianense was revealed to be a synonym of C. nigrum.
Funder
University of Melbourne
Publisher
Springer Science and Business Media LLC
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