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Leaf Spot on Sweet Potato ( Ipomoea batatas ) Caused by Stemphylium solani , a New Disease in China
Author(s) -
Chai ALi,
Du GongFu,
Shi YanXia,
Xie XueWen,
Li BaoJu
Publication year - 2015
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/jph.12344
Subject(s) - biology , ipomoea , leaf spot , botany , pathogenicity , spots , horticulture , china , microbiology and biotechnology , political science , law
During 2010–2011, a severe leaf spot disease of sweet potato ( Ipomoea batatas ) was found in Haikou City, Hainan province of China. The disease is characterized with large, irregular, brown, necrotic lesions on the margin or in the centre of leaves. A species of Stemphylium was consistently recovered from pieces of symptomatic tissues on PDA. Based on morphological characteristics and molecular identification by rDNA ‐ITS gene analysis, the fungal species was identified as Stemphylium solani Weber, and its pathogenicity was confirmed by Koch's postulates. This is the first report of leaf spot on sweet potato caused by S . solani in China.