Molecular evidence for teleomorph-anamorph connections in Cordyceps based on ITS-5.8S rDNA sequences
Molecular evidence for teleomorph-anamorph connections in Cordyceps based on ITS-5.8S rDNA sequences
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DOI：
10.1017/s0953756202006378
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发表时间：
2002-09-01
影响因子：
--
通讯作者：
Yu, ZN
中科院分区：
文献类型：
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作者：
Liu, ZY;Liang, ZQ;Yu, ZN
冬虫夏草有性形之间的关系。通过分析 5.8S 和 ITS rDNA 序列，研究了它们推测的无性型。形态学和序列数据证实，Paecilomyces hawkesii是Cordyceps Gunnii的无性型，而Cordyceps hawkesii是C.gunnii的异名，P.gunnii是P. hawkesii的异名。以下推测的联系也得到了证实：布氏白僵菌 (Beauveria brongniartii) 是布氏白僵菌 (C. brongniartii)、绿僵菌 (Metarhizium anisopliae var.) 的无性型。 majus是C. brittlebankisoides的无型型，Beauveria sobolifera是C. sobolifera的无型型，Mariannaea pruinosa是C. pruinosa的无型型，Paecilomyces militaris是C. militaris的无型型，中华被毛菌是C. sinensis的无型型。测序的其他分离株不太可能是从中分离出它们的有性型的无性型，因为来自培养物和有性型的序列非常不同。 5.8S 和 ITS 序列为建立无性型-有性型连接并协助界定冬虫夏草内的物种提供了有用的信息。
The relationship between teleomorphs of Cordyceps spp. and their presumed anamorphs have been investigated by analysis of 5.8S and ITS rDNA sequences. The morphological and sequence data confirm that Paecilomyces hawkesii is the anamorph of Cordyceps gunnii, while Cordyceps hawkesii is a synonym of C. gunnii, and P. gunnii is a synonym of P. hawkesii. The following presumed connections are also confirmed: Beauveria brongniartii is the anamorph of C. brongniartii, Metarhizium anisopliae var. majus is the anamorph of C. brittlebankisoides, Beauveria sobolifera is the anamorph of C. sobolifera, Mariannaea pruinosa is the anamorph of C. pruinosa, Paecilomyces militaris is the anamorph of C. militaris, and Hirsutella sinensis is the anamorph of C. sinensis. The other isolates sequenced are unlikely to be anamorphs of the teleomorphs from which they were isolated because the sequences from the culture and the teleomorph are quite different. 5.8S and ITS sequences provide useful information for establishing anamorph-teleomorph connections and assisting in the delimitation of species within Cordyceps.