Studies of reidentification of several kinds of Botryosphaeria sp. causing the tree cankers and diebacks.

我对引起针叶树枯萎病、杨树溃烂病、赤杨溃烂病、核桃褐枯病、枫树粗皮病和落叶松枯梢病的病原真菌进行了重新鉴定。经序列分析和形态特征观察，所有供试的菌株和标本均被鉴定为灰霉病菌。然而，由于形态特征的观察结果与序列分析不符，未能鉴定出针叶枯萎病、赤杨溃烂病、核桃褐斑病和枫树粗糙皮。

I performed reidentification of the pathogenic fungi that is causing the tree cankers and diebacks on Guignardia dieback of Conifers, Guignardia canker of Poplar, Guignardia canker of Alder, Brown blight of Walnuts, Rough bark of Maples and Shoot blight of Japanese larch. As a result of sequence analysis and the observation on morphological characteristics, all isolates and all specimen which did test for this experiment were included in Botryosphaeria sp. However, Guignardia dieback of Conifers, Guignardia canker of Alder, Brown blight of Walnuts, and Rough bark of Maples were not identified, because result of the observation on morphological characteristics did not accord with sequence analysis.