Archaeal communities in the sediments of different mangrove stands at Dongzhaigang, China
Archaeal communities in the sediments of different mangrove stands at Dongzhaigang, China
复制标题
中国东寨港不同红树林沉积物中的古菌群落
DOI：
10.1007/s11368-016-1427-0
复制
发表时间：
2016-07-01
影响因子：
3.6
通讯作者：
He, Yixin
中科院分区：
文献类型：
--
作者：
Li, Wei;Guan, Wei;He, Yixin
PurposeKnowledge of archaeal communities is essential for understanding of the mechanism of carbon and nitrogen cycle in the mangrove sediment ecosystem. Presently, little is known about archaeal communities in the Dongzhaigang mangrove sediments. This study aimed to characterize the archaeal communities in sediments of different mangrove stands and to find out the correlations between archaeal communities and the environmental factors of sediments.Materials and methodsSediment samples were collected from the Dongzhaigang mangrove forest for analysis of soil properties and archaeal communities, by national standard methods and Illumina Miseq archaeal 16S ribosomal RNA (rRNA) gene sequencing, respectively.Results and discussionThe archaeal community in the Dongzhaigang mangrove forest was constituted by some phyla from “TACK” and “DPANN” supergroups, and dominated by Euryarchaeota. Among sediments of the four mangroves in Dongzhaigang, principal coordinates analysis (PCoA) scatter plot showed a trend of difference in the archaeal community structure in theBruguiera gymnoihizaandKandelia candelstands from that in theLaguncularia racemosaandSonneratia apetalastands. The abundance of the order Methanosarcinales was the highest in the sediments ofK. candelmangroves, whereas the order of Methanobacteriales dominated inB. gymnoihizasediments. The highest richness and diversity values of Archaea occurred inK. candelsediments, while the lowest inB. gymnoihiza. Pearson correlation showed the significant relationships between sediment properties and some dominant genera, with a positive and significant correlation between sediment properties and genusMethanobacterium, coinciding with the maximum values of sediment properties and abundance ofMethanobacteriumin the sediment ofB. gymnoihiza. Such results indicated that the difference of archaeal community structure among mangrove sediments may be caused by the different sediment characteristics. Methanogenic communities in the Dongzhaigang mangrove forest sediments were, at the order level, constituted by Methanobacteriales, Methanomicrobiales, Methanosarcinales, and Methanomassiliicoccales.ConclusionsThe investigation indicated that the Dongzhaigang mangrove sediment ecosystems support diverse archaeal communities and methanogenic communities, and that there was a general trend of difference in the archaeal community structure in theB. gymnoihizaandK. candelmangrove sediments from that in theL. racemosaandS. apetalasediments. Such difference may be caused by the difference in sediment characteristics.
