Seasonal patterns in microbial communities inhabiting the hot springs of Tengchong, Yunnan Province, China
Seasonal patterns in microbial communities inhabiting the hot springs of Tengchong, Yunnan Province, China
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中国云南腾冲温泉微生物群落的季节变化
DOI：
10.1111/1462-2920.12311
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发表时间：
2014-06-01
影响因子：
5.1
通讯作者：
Hungate, Bruce A.
中科院分区：
文献类型：
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作者：
Briggs, Brandon R.;Brodie, Eoin L.;Hungate, Bruce A.
对陆地和海洋环境中微生物群落季节动态的研究很常见，但对高温环境中的季节动态知之甚少。因此，我们的目标是记录中国云南省腾冲县温泉物理化学条件和微生物群落的季节动态。PhyloChip微阵列在79个细菌门水平组内检测到4882个操作分类单位（OTU），在20个古细菌门水平组内检测到113个OTU，这是先前使用焦磷酸测序描述的那些的另外54个细菌门和11个古细菌门。季风采样（2011年6月）显示，与旱季（2011年1月）相比，钾、总有机碳、铵、钙、钠和总氮的浓度增加，亚铁含量减少。与此同时，1月份存在的高度有序的微生物群落在6月份让位于秩序较差的群落，其特征是细菌的丰富度较高，包括与嗜温菌相关的微生物。这些地球化学和群落结构的季节性变化可能是由于季风季节的高降雨量，并表明季节性动态发生在高温环境中经历季节性补给的显着变化。因此，地热环境不是与周围环境隔离的，季节性影响微生物生态。
Studies focusing on seasonal dynamics of microbial communities in terrestrial and marine environments are common; however, little is known about seasonal dynamics in high-temperature environments. Thus, our objective was to document the seasonal dynamics of both the physicochemical conditions and the microbial communities inhabiting hot springs in Tengchong County, Yunnan Province, China. The PhyloChip microarray detected 4882 operational taxonomic units (OTUs) within 79 bacterial phylum-level groups and 113 OTUs within 20 archaeal phylum-level groups, which are additional 54 bacterial phyla and 11 archaeal phyla to those that were previously described using pyrosequencing. Monsoon samples (June 2011) showed increased concentrations of potassium, total organic carbon, ammonium, calcium, sodium and total nitrogen, and decreased ferrous iron relative to the dry season (January 2011). At the same time, the highly ordered microbial communities present in January gave way to poorly ordered communities in June, characterized by higher richness of Bacteria, including microbes related to mesophiles. These seasonal changes in geochemistry and community structure are likely due to high rainfall influx during the monsoon season and indicate that seasonal dynamics occurs in high-temperature environments experiencing significant changes in seasonal recharge. Thus, geothermal environments are not isolated from the surrounding environment and seasonality affects microbial ecology.