لاچین مختارنژاد - PhD Student, Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran (mokhtarnejad@ut.ac.ir)
مهدی ارزنلو - Associate Prof., Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
اسداله بابای اهری - Prof., Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
بندتا تورکتی - Assistant Prof., Department of applied Microbiology; University if Perugia, Italy

In the present study basidiomycetous yeast species were characterised from soil samples in different regions of Iran. Soil samples were collected from ۵–۱۵ cm depth, subsequently yeasts were isolated and purified. Yeast isolates were identified using D۱/D۲ domains of ۲۶S rRNA and physiologic tests. The results of this study revealed a rich diversity amongst basidiomycetous yeast species in the sampled areas.  In this paper we report and characterise ۲۵ species belonging to six genera viz., Trichosporon pullulans, Rhodotorula mucilaginosa, R. minuta, R. lysiniphila, R. laryngis, Rhodosporidium kratochvilovae, R. babjevae, Holtermanniella takashimae, Fibulobasidium inconspicuum, Crytococcus ramirezgomezianus, Cryptococcus watticus, C. victoriae, C. uzbekistanensis, C. terreus, C. saitoi, C. podzolicus, C. oeirensis, C. friedmannii, C. flavescens, C. diffluens, C. bhutanensis, C. albidus, C. albidosimilis, C. aerius, C. adeliensis. All of these species represent  new records for the mycobiota of Iran. Members of the genus Cryptococcus were the most donimnat basidiomycetous yeast and Cryptococcus aerius was commonly isolated from all soil samples as the dominat species.

D۱/D۲, ۲۶ rRNA gene, Cryptococcus, Rhodosporidium, Rhodotorula