Microbial diversity and potential biogeochemical cycles at several geothermal sites in southern Jiangxi Province
Geothermal microorganisms,as an important component of geothermal extreme ecosystems,play a key role in local and regional element cycling.but there is a lack of relevant research on geothermal microorganisms in South China.The bacterial diversity and community structure of 6 geothermal site water samples(40-80 ℃)and 4 sediment samples were analyzed using 16S rRNA gene sequencing technology,and 2856 species of 1072 genera of bacteria were identified.Five geothermal factors,including temperature,pH,sulfate,nitrate nitrogen and calcium,have significant effects on the geothermal bacterial community.Temperature is the main influencing factor and is positively correlated with species richness and diversity.Characteristic bacteria include Proteobacteria,Deinococcota,Aquificota,Firmicutes,among which Thermus,Sulfurihydrogenibium,Thermodesulfovibrio and Hydrogenobacter are significantly enriched at the geothermal sites,Jiahu(JH)and Lantian(ND),in the southern Jiangxi province.These microbial groups may be involved in the biogeochemical cycle of S,Fe and mineral elements at the ND geothermal site.Also in this study,20 strains of heat-resistant bacteria were isolated,most of which were of the Bacillus.These findings reveal the characteristics of geothermal microorganisms in the southern Jiangxi province and provide scientific guidance for the exploitation and protection of geothermal resources.
southern Jiangxigeothermal springsmicrobial diversitybiogeochemical cycle of element
万方数据
维普
