短穗竹上一种异香柱菌的形态学及分子鉴定

竹丛枝病可由多种病原引起，竹生香柱菌即是其中的一类，包括竹香柱菌（Epichlo bambusae）和箬竹香柱菌（Epichlo sasae）两种。日本学者Tanaka 根据形态结合分子的研究结果，将其更名为箣竹异香柱菌（Heteroepichlo bambusae）和箬竹异香柱菌（Heteroepichlo sasae）。该文作者于2007年5月底从安徽省广德县的短穗竹上采集到1种异香柱型丛枝病标本，对其病原菌的形态学和培养特征进行观察描述，并利用ITS rDNA序列对其系统发育学进行分析，最终确定该菌为箬竹异香柱菌，而不是先前认为的箣竹异香柱菌。鉴于国内有关其他寄主上的竹生异香柱菌的描述模糊，并且绘图非常简单，因此建议对我国竹生的异香柱菌形态学和寄主范围进行研究，特别是利用分子生物学手段确定它们的分类学地位。 

Identification of Heteroepichlo species on Brachystachyum densiflorum by morphology and phylogeny

Witches’ broom can be caused by several kinds of fungi. Among them, Epichlo species are common including E. sasae and E. bambusae, now named as Heteroepichlobambusae and Heteroepichlo sasae based on the study of Tanaka in 2002 The authors collected specimens on Brachystachyum densiflorum in the end of May of 2007, which suffered from Heteroepichlo witches’ broom. The morphology, biology, and sequence analysis of ITS rDNA were used for this fungus. It was finally determined to be H. sasae rather than H. bambusae. The species of Heteroepichlo (under the name Epichlo) were formerly described and illustrated very simply in China. Therefore, host spectrum, morphology and molecular biology should be integrated for the study of Heteroepichlo species on bamboo in China.