Open AccessPhylogenetic and structural analyses of the mating‐type loci in Clavicipitaceae
Author(s) -
Yokoyama Eiji,
Arakawa Masao,
Yamagishi Kenzo,
Hara Akira
Publication year - 2006
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.2006.00447.x
Subject(s) - biology , hypocreales , cordyceps , botany , metarhizium , mating type , cordyceps militaris , phylogenetic tree , metarhizium anisopliae , genetics , ascomycota , gene , biological pest control
Entomopathogens and other econutritional fungi belonging to Clavicipitaceae were phylogenetically analyzed on the basis of the 18S rRNA gene and mating‐type genes ( MAT1‐1‐1 and MAT1‐2‐1 ). The phylogenies of the mating‐type genes yielded better resolutions than that of 18S rRNA gene. Entomopathogens ( Cordyceps bassiana, Cordyceps brongniartii, Cordyceps militaris, Cordyceps sinclairii, Cordyceps takaomontana, Isaria cateniannulata, Isaria farinosa, Isaria fumosorosea, Isaria javanica, Lecanicillium muscarium and Torrubiella flava ) were considered as a phylogenetically defined group, and were closely related to mycopathogens ( Lecanicillium psalliotae and Verticillium fungicola ). They located at more descendant positions in the mating‐type trees than other fungi, and lacked the mating‐type gene MAT1‐1‐3 . The deletion of MAT1‐1‐3 was supposed to have occurred once in Clavicipitaceae , and a good indication for the evolution of Clavicipitaceae . Other entomopathogens ( Cordyceps cylindrica, Cordyceps subsessilis, Metarhizium anisopliae and Nomuraea rileyi ) and pathogens of plants, nematodes and slime molds, were relatively related to each other, and possessed MAT1‐1‐3 , but were supposed to be heterogeneous. Root‐associated fungi did not form any clade with other species.