Diversity of endophytic fungi from Pteroceltis tatarinowii
青檀内生真菌菌群多样性的研究

Diversity of endophytic fungi from Pteroceltis tatarinowii was studied in order to understand diversity and succession change of endophytic fungal communities in this endemic plant. Healthy plant samples were collected from five natural distribution areas of P. tatarinowii in Anhui, Henan, Shandong and Jiangsu Provinces. A total of 3,611 isolates of endophytic fungi were obtained. Thirty-one genera belonging to Ascomycota (2.25%), Coelomycetes (49.42%) and Hyphomycetes (28.52%) were identified, of these Phomopsis (22.10%) and Alternaria (20.66%) were the dominant genera. A total of 19.52% of all isolates were sterile on the media. The community of endophytic fungi from P. tatarinowii of Nanjing and that of Zaozhuang has the highest similarity (Cs = 0.84), while the community similarity of Nanjing and that of Nanyang was the lowest (Cs = 0.60). Coelomycetes was the most dominant in lamina, petiole and branch. The isolation rate of Hypomycetes was the highest (46.71%) in spring, but that of Coelomycetes (55.85%) was the highest in autumn.