Endophytic Fungal Diversity of Mangrove Ferns Acrostichum speciosum and A. aureum in China

作者：Hongjuan Zhu, Wending Zeng, Manman Chen, He Dan, Xia‐Lan Cheng, Jing Yu, Ya Liu, Yougen Wu, Dongmei Yang · 发表于：Plants · 年份：2024 · DOI：10.3390/plants13050685 · 被引用次数：8 · 研究领域：Coastal wetland ecosystem dynamics、Plant Pathogens and Fungal Diseases、Marine and coastal plant biology

Microbial communities are an important component of mangrove ecosystems. In order to reveal the diversity of endophytic fungi in the mangrove ferns Acrostichum speciosum and A. aureum in China, the internal transcribed spacer (ITS) regions of endophytic fungi in four plant tissues (leaves, petioles, roots, and rhizomes) from three locations (Zhanjiang, Haikou, and Wenchang) were sequenced. The richness, species composition, and community similarity were analyzed. The main results are as follows: the dominant fungi in A. speciosum and A. aureum belonged to the phyla Ascomycota and Basidiomycota, accounting for more than 75% of the total identified fungi; in terms of species composition at the operational taxonomic unit (OTU) level, the endophytic fungi in A. aureum were more diverse than those in A. speciosum, and the endophytic fungi in rhizomes were more diverse than in other tissues. In Zhanjiang, both A. speciosum and A. aureum showed the richest diversity of endophytic fungi, both at the OTU classification level and in terms of species composition. Conversely, the richness of endophytic fungi in the samples of A. speciosum from Wenchang and Haikou is extremely low. The regional differences in dominant fungi increase with the degrading of taxonomic levels, and there were also significant differences in the number of unique fungi among different origins, with Zhanjiang samples having a larger number of unique fungi than the other locations. There were significant difference...