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Characterization of Botryosphaeria dothidea and Lasiodiplodia pseudotheobromae from English Walnut in China
Author(s) -
Li GuoQing,
Liu FeiFei,
Li JieQiong,
Liu QianLi,
Chen ShuaiFei
Publication year - 2016
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.12422
Subject(s) - botryosphaeria dothidea , biology , botryosphaeria , lasiodiplodia theobromae , botany , china , intergenic region , pathogenicity , horticulture , beijing , gene , geography , genetics , archaeology , genome , microbiology and biotechnology
China is the largest walnut producer in the world, and walnut trees, especially English walnut, are widely distributed in the country. Species of Botryosphaeriaceae include important plant pathogens that can cause diseases on many tree crops including English walnut. Recently, disease symptoms caused by Botryosphaeriaceae were observed on English walnut branches or kernels from Beijing, Henan and Sichuan provinces in China. Based on morphological characteristics and phylogenetic analyses of the ITS rDNA sequences and translation elongation factor 1‐alpha ( TEF ‐1 α ) gene regions, Botryosphaeria dothidea and Lasiodiplodia pseudotheobromae were identified. Pathogenicity tests showed that both species are virulent to English walnut. To our knowledge, this is the first report of L. pseudotheobromae infecting English walnut in the world.