MOLECULAR GENETIC DIVERSITY OF PATHOGENIC FUNGAL GROUP CAUSING TREE CANKER Ⅰ. ——EVIDENCE OF TAXA FOR DOTHIORELLA, DOTHICHIZA,CYTOSPORA AND CONIOTHYRIUM IN MOLECULAR LEVEL
Abstract:The fungal group, including the genera of Dothiorella Sacc. (its sexual phase is Botryosphaeria Cas.), Dothichiza Lib., Cytospora Ehrenb. and Coniothyrium Sacc. presently are the most important forest pathogens in China. In this paper, the tested fifteen isolates of the group are divided into four clusters by the methods of 28S rDNA-PCR-RFLP and RAPD analyses. Each cluster just corresponds to one genus. So, the objectivity of the traditional taxonomy of these genera is proved in the molecular level.