ABSTRACT

Systematics of Chytridiales has been deeply influenced by analyses of molecular loci and zoospore ultrastructure. Even though the Chytridiales is the largest order within Chytridiomycota, Brazilian isolates of this clade have been poorly integrated. Here, we isolated seven species and documented their morphology, including zoospore ultrastructure for Siphonaria aurea, and phylogenetic positions for all based on analyses of nuc 18S and 28S rDNA. Phylogenetic results support the placement of these species in Chytriomycetaceae and Chytridiaceae, with two new species described, Rhizidium crepaturum and Siphonaria aurea, and Rodmanochytrium sphaericum recorded for the first time from Brazil.

摘要

y虫的系统学受到分子基因座和游动孢子超微结构分析的深刻影响。尽管the虫是Ch虫科中最大的订单，但该进化枝的巴西分离株整合度很低。在这里，我们分离七种并记录它们的形态，包括游动孢子超微结构的Siphonaria罗非鱼，并根据NUC 18S和28S rDNA的分析，对所有系统发育位置。系统发育结果支持Chytriomycetaceae和Chytridiaceae这些物种的位置，用描述的两个新物种，Rhizidium crepaturum和Siphonaria罗非鱼和Rodmanochytrium sphaericum记录首次来自巴西。