Salt tolerance of halotolerant bacteria from coastal soils and sediments near saltern field of Hainan Island, China

• Published in: Archives of microbiology Vol. 203; no. 10; pp. 5921 - 5930
• Main Authors: Chen, Yonggan, Zhang, Zhenhua, Luo, Hongwei, Li, Zhen
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.12.2021; Springer Nature B.V
• Subjects: Bacteria; Biochemistry; Biodiversity; Biomedical and Life Sciences; Biotechnology; Cell Biology; Ecology; Environmental factors; Intertidal zone; Life Sciences; Microbial activity; Microbial Ecology; Microbiology; Microorganisms; Na+/H+-exchanging ATPase; Next-generation sequencing; Original Paper; Potassium; Relative abundance; rRNA 16S; Salinity tolerance; Salt tolerance; Salterns; Sediments; Soil bacteria; Soil microorganisms; Soils; China; Hainan Island; Saltern; Salt tolerance; Coastal soils and sediments; Microbial community
• ISSN: 0302-8933; 1432-072X
• DOI: 10.1007/s00203-021-02461-w

Understanding the salt tolerance of microbial communities may help to elucidate the effects of salt concentration and other environmental factors on soil biodiversity. Here, high-throughput sequencing of 16S rDNA and ITS was combined to investigate the distribution and salt tolerance of microbial communities in coastal soils and sediments near the Yinggehai saltern field of Hainan Island, China. The microbial communities in the soils and sediments of the land zone (YGHLS), the intertidal zone (YGHIS), and the inshore zone (YGHWS) were compared. PCoA of weighted and unweighted UniFrac distance revealed obvious differences in soil microbial community among different samples. ANOSIM analysis could clearly separate the three samples from each other. Three halotolerant bacteria, including Halomonas , Halobacillus and Wallemia , were found in the samples, which accounted for 0.0335 ± 0.0586%, 0.0241 ± 0.0304%, and 0.0308 ± 0.0445% of the total microbial community, respectively. The relative abundance of Trk system potassium uptake protein, Kdp operon response regulator, and Na + /H + antiporter in the samples exceeded 0.09%, 0.06%, and 0.02%, respectively, indicating that the Trk system plays a major role in the salt tolerance of halotolerant bacteria in Yinggehai coastal soils and sediments.