McLaughlin David J, Kumar T K Arun, Padamsee Mahajabeen, Toome-Heller Merje, Frieders Elizabeth M, Aime M Catherine
a Department of Plant and Microbial Biology , University of Minnesota , 1445 Gortner Avenue, St. Paul , Minnesota 55108.
b Department of Botany , The Zamorin's Guruvayurappan College , Calicut , Kerala 673014 , India.
Mycologia. 2017;109(1):162-181. doi: 10.1080/00275514.2017.1282239. Epub 2017 Jan 19.
Early diverging taxa of Ascomycota and Basidiomycota share similarities in subcellular characters of the spindle pole body (SPB), nuclear division, and septal pore apparatus, but our understanding of character evolution is incomplete because of the limited number of structural studies within the earliest diverging subphyla of Dikarya, Taphrinomycotina and Pucciniomycotina. Two species of Helicogloea (Atractiellomycetes) were analyzed for these characters and provide data on SPB and nuclear division for an additional class of Pucciniomycotina. A detailed analysis of septal pore apparatus for the Helicogloea species permits comparisons with those of other Pucciniomycotina and Ascomycota. The endogenous origin of hyphal branches is shown to occur in a third class of Pucciniomycotina. The full set of characters supports a close relationship between Atractiellomycetes and Pucciniomycetes.
子囊菌门和担子菌门的早期分化类群在纺锤极体（SPB）的亚细胞特征、核分裂和隔膜孔装置方面具有相似性，但由于对双核菌亚门中最早分化的亚纲——外囊菌亚纲和锈菌亚纲的结构研究数量有限，我们对性状进化的理解并不完整。对两种螺旋胶膜菌（无柄孢菌目）的这些特征进行了分析，并为锈菌亚纲的另一类群提供了关于SPB和核分裂的数据。对螺旋胶膜菌物种隔膜孔装置的详细分析允许与其他锈菌亚纲和子囊菌门的物种进行比较。已证明菌丝分支的内源性起源发生在锈菌亚纲的第三类群中。全套特征支持无柄孢菌目和锈菌纲之间存在密切关系。
