New or less known ascomycete species associated with trunk and branches of trees in Guilan province, Iran

In this study, we report some Ascomycete genera from Nectriaceae, Botryosphaeriaceae, Cryphonectriaceae and Hypocreaceae families from Guilan province, Iran. Cultural and morphological characteristics and sequence information of rDNA ITS and translation elongation factor 1-α encoding gene (tef1) were used for identification. Among isolates studied in this research, six species viz. Microthia havanensis, Lasiodiplodia hormozganensis, Lasiodiplodia parva, Thyronectria austroamericana, Trichoderma cf. chromospermum and Trichoderma cf. longibrachiatum are reported as new or less known species for the region. As a result, two genera viz. Thyronectria (Nectriaceae) and Microthia (Cryphonectriaceae) and two species (Lasiodiplodia parva and Trichoderma cf. chromospermum)are new reports for Iran mycobiota.