Abstract: In order to compare the composition and diversity of bacterial community in wet and dry seasons of the Wanfeng Lake in Qianxian prefecture, Guizhou Province, water samples from the surface (0-5 m)of three ecological loci in the Wanfeng Lake were collected in November 2020 (wet season)and May 2021 (dry season), bacterial community composition of each sample was studied by 16S rRNA high-throughput sequencing technology. The sequence diversity and abundance indices showed that there were 1 647 OTUs in the wet season and 1 530 OTUs in the dry season. The relative bacterial abundance in the dry season was higher than that in the wet season.The bacterial community diversity in the wet season was higher than that in the dry season. The species classification results showed that the planktonic bacterial community in the wet season was mainly composed of 18 phylum (Proteobacteria, Actinobacteria and Cyanobacteria, etc.), and 202 genera of bacteria. The planktonic bacterial community in the dry season is mainly composed of 20 phylum (Actinobacteria, Proteobacteria and Bacteroidetes, etc.), and 236 genera of bacteria. The analysis of the genera showed that a total of 55 genera were common in both wet and dry seasons, and 147 genera were specific to the wet season, among which Nanopelagicaceae, Cyanobium and Limnohabitans of the Actinomycetes phylum had the higher abundance. 181 genus is specific to the dry season, with the higher abundance of Gplla, Terramonas and Roseonas in the Cyanobacteria phylum. PICRUSt function prediction showed that the gene copy number in the wet season was significantly higher than that in the dry season in most metabolic pathways. The results reveal that there are significant differences in the composition and diversity of bacterial community between wet and dry seasons of the Wanfeng Lake, the wet and dry seasons have their own unique bacterial community structures, and the metabolism of bacterial community in the dry season is more active than that in the wet season.
秦燕, 范波, 梅丽. 万峰湖丰水期和枯水期细菌群落组成和多样性比较[J]. 大连海洋大学学报, 2023, 38(3): 414-422.
QIN Yan, FAN Bo, MEI Li. Comparative of bacterial community composition and diversity in the Wanfeng Lake between wet season and dry season. Journal of Dalian Ocean University, 2023, 38(3): 414-422.
2023, Vol. 38 
