New taxa of Neosartorya and Aspergillus in Aspergillus section Fumigati.
Three new species of Neosartorya and one new Aspergillus of section Fumigati are proposed using a polyphasic approach based on morphology, extrolite production and partial beta-tubulin, calmodulin, and actin gene sequences. The phylogenetic analyses using the three genes clearly show that the taxa grouped separately from the known species and confirmed the phenotypic differences. Neosartorya denticulata is characterized by its unique denticulate ascospores with a prominent equatorial furrow; N. assulata by well developed flaps on the convex surface of the ascospores which in addition have two distinct equatorial crests and N. galapagensis by a funiculose colony morphology, short and narrow conidiophores and ascospores with two wide equatorial crests with a microtuberculate convex surface. Aspergillus turcosus can be distinguished by velvety, gray turquoise colonies and short, loosely columnar conidial heads. The four new taxa also have unique extrolite profiles, which contain the mycotoxins gliotoxin and viriditoxin in N. denticulate; apolar compounds provisionally named NEPS in N. assulata and gregatins in N. galapagensis. A. turcosus produced kotanins. N. denticulata sp. nov., N. assulata sp. nov., N. galapagensis sp. nov., and A. turcosus sp. nov. are described and illustrated.
Hong
Seung-Beom
SB
Korean Agricultural Culture Collection, NIAB, Suwon 441-707, South Korea.
Shin
Hyeon-Dong
HD
Hong
Joonbae
J
Frisvad
Jens C
JC
Nielsen
Per V
PV
Varga
János
J
Samson
Robert A
RA
D000199:Actins / Q000235:genetics; D001203:Ascomycota / Q000145:classification / Q000235:genetics* / Q000648:ultrastructure; D001230:Aspergillus / Q000145:classification / Q000235:genetics* / Q000648:ultrastructure; D004271:DNA, Fungal / Q000235:genetics; D008855:Microscopy, Electron, Scanning; D008969:Molecular Sequence Data; D010802:Phylogeny; D014404:Tubulin / Q000235:genetics
D000199:Actins; D004271:DNA, Fungal; D014404:Tubulin