Cladochytriales-a new order in Chytridiomycota
Cladochytriales-a new order in Chytridiomycota
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DOI：
10.1016/j.mycres.2008.12.004
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发表时间：
2009-04-01
影响因子：
--
通讯作者：
Simmons, D. Rabern
中科院分区：
文献类型：
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作者：
Mozley-Standridge, Sharon E.;Letcher, Peter M.;Simmons, D. Rabern
最近，分子和超微结构分析对壶菌门的系统发育假说进行了修改。壶菌目曾经被认为是单系的，现已细分为几个新的目。然而，最近的分析表明，修正后的壶菌目也是多系的。壶菌目中的一个单系谱系包括枝壶菌属、Nowakowskiella 属和其他五个属。人们经常观察到该分支中的许多壶菌在腐烂的植物组织和来自水生生境和潮湿土壤的其他纤维素基质上生长。在这项研究中，我们分析了来自北美水生和土壤样品的 30 个分离株的组合 nu-rRNA 基因序列（部分 SSU 和 LSU）。基于分子单系性和游动孢子超微结构，我们将这个进化枝命名为一个新目Cladochytriaceae，它包括四个科：Cladochytriaceae、Nowakowskiellaceae、Septochytriaceae fam。 nov.和Endochytriaceae。 (C) 2009 英国真菌学会。由爱思唯尔有限公司出版。保留所有权利。
Recently, molecular and ultrastructural analyses have resulted in revised phylogenetic hypotheses in the phylum Chytridiomycota. The order Chytridiales, once considered monophyletic, has been subdivided into several new orders. However, the most recent analyses indicate that the emended Chytridiales is also polyphyletic. One monophyletic lineage in Chytridiales includes Cladochytrium, Nowakowskiella, and five other genera. Many of the chytrids in this clade have often been observed growing on decaying plant tissue and other cellulosic substrates from aquatic habitats and moist soils. In this study we analysed combined nu-rRNA gene sequences (partial SSU and LSU) of 30 isolates from North American aquatic and soil samples. Based on molecular monophyly and zoospore ultrastructure, we designate this clade as a new order, Cladochytriales, which includes four families: Cladochytriaceae, Nowakowskiellaceae, Septochytriaceae fam. nov., and Endochytriaceae. (C) 2009 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.