Cytospora species associated with walnut canker disease in China, with description of a new species C-gigalocus
Cytospora species associated with walnut canker disease in China, with description of a new species C-gigalocus
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DOI：
10.1016/j.funbio.2014.12.011
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发表时间：
2015-05-01
期刊：
影响因子：
2.5
通讯作者：
Tian, Chengming
中科院分区：
文献类型：
--
作者：
Fan, Xinlei;Hyde, Kevin D.;Tian, Chengming
与溃烂病相关的胞孢菌种目前很难鉴定，因为缺乏具有分子数据的前类型培养，可区分的特征很少，而且GenBank中的大多数胞孢菌株只有内部转录间隔区(ITS)序列。本文报道了中国核桃树上的胞孢子菌。对采集的标本进行了形态和系统发育研究。结合ITS、nrLSU、β-微管蛋白和肌动蛋白基因序列数据，建立了核桃溃烂病相关物种的亲缘关系。对引起核桃溃烂病的核桃溃烂病的病原菌进行了鉴定，包括核桃溃烂病的致病胞孢霉、黄胞孢霉、球囊胞孢霉和一新种巨型胞孢霉。对巨型胞孢菌进行了正式描述，并与大多数相似种进行了比较。核桃上曾记录到黄孢子囊孢霉和球囊胞孢霉，而核桃溃烂病首次报道为囊状胞孢霉。这是首次用多相方法确定了引起中国核桃溃烂病的胞孢菌种。所有种均为首次在中国记录到与核桃溃烂病有关。(C)2014年英国真菌学会。爱思唯尔有限公司出版。保留所有权利。
Cytospora species associated with canker disease are presently difficult to identify because of lack of ex-types cultures with molecular data, few distinguishable characters, and only Internal transcribed spacer (ITS) sequence data is available for most Cytospora strains in GenBank. We report on Cytospora species from the walnut tree in China. Collections were subjected to morphological and phylogenetic study. The relatedness of species associated with walnut canker were established using combined ITS, nrLSU, beta-tubulin, and actin gene sequence data. Cytospora atrocirrhata, Cytospora chrysosperma, Cytospora sacculus, and a new species, Cytospora gigalocus, were identified causing canker disease of walnut. Cytospora gigalocus is formally described and compared with most similar species. Cytospora chrysosperma and C. sacculus have previously been recorded from walnut, whereas C. atrocirrhata is reported as associated with walnut canker for the first time. This is the first study that has established the Cytospora species causing walnut canker in China using a multiphasic approach. All species are recorded as being associated with walnut canker disease in China for the first time. (C) 2014 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.