Archaeal communities in the sediments of different mangrove stands at Dongzhaigang, China

Abstract

Purpose Knowledge 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 methods Sediment 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 discussion The archaeal community in the Dongzhaigang mangrove forest was constituted by some phyla from BTACK^and BDPANN^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 the Bruguiera gymnoihiza and Kandelia candel stands from that in the Laguncularia racemosa and Sonneratia apetala stands. The abundance of the order Methanosarcinales was the highest in the sediments of K. candel mangroves, whereas the order of Methanobacteriales dominated in B. gymnoihiza sediments. The highest richness and diversity values of Archaea occurred in K. candel sediments, while the lowest in B. gymnoihiza. Pearson correlation showed the significant relationships between sediment properties and some dominant genera, with a positive and significant correlation between sediment properties and genus Methanobacterium, coinciding with the maximum values of sediment properties and abundance of Methanobacterium in the sediment of B. 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. Conclusions The investigation indicated that the Dongzhaigang mangrove sediment ecosystems support (2016( ) 16:1995( -2004( DOI 10.1007( /s11368-016-1427 diverse archaeal communities and methanogenic communities, and that there was a general trend of difference in the archaeal community structure in the B. gymnoihiza and K. candel mangrove sediments from that in the L. racemosa and S. apetala sediments. Such difference may be caused by the difference in sediment characteristics.

Genomic and transcriptomic insights into methanogenesis potential of novel methanogens from mangrove sediments

“…MF, MMA, MM, and MS were the four dominant methanogen lineages identified in the current study. This was consistent with previous 16S rRNA gene and mcrA sequencing-based identification of Methanomicrobiales and Methanosarcinales in coastal sediments [53][54][55]. Mangrove sediments in the Futian Natural Reserve are characterized by high sulfate concentrations [49], suggesting that adaptation to high salinity is important for mangrove dwelling.…”

“…According to metatranscriptomic analysis in the current study, MMA were the most active group in all layers, suggesting that MMA are well adapted to the fluctuating environment of mangrove sediments. Indeed, prevalence of Methanomassiliicoccales in coastal sediments has been reported [31,54], indicating their importance for methane production in natural environments. MMA MAGs contained genes encoding oligo-and monosaccharide transporters, which might illustrate adaptation to a heterotrophic lifestyle (Fig.…”

Tide as Steering Factor in Structuring Archaeal and Bacterial Ammonia-Oxidizing Communities in Mangrove Forest Soils Dominated by Avicennia germinans and Rhizophora mangle

“…Bacterial communities in the rhizospheres of Avicennia schaueriana and Laguncularia racemosa and archaeal communities in the rhizospheres of R. mangle and L. racemosa from Brazil showed some differences in their composition, although the main variation was between the rhizosphere of either mangrove tree and the bulk sediment communities [ 24 , 25 ]. Archaeal communities were also studied in mangroves from China, and differences were found between communities associated to K. candel or Bruguiera gymnoihiza and those associated to L. racemosa or Sonneratia apetala mangroves [ 22 ].…”

“…Mangrove trees can have different impacts on soil archaeal and bacterial communities through alteration of the soil microenvironment such as changes in the content of organic matter or other sediment characteristics [ 22 , 23 ], root exudates [ 24 , 25 ], and litter inputs [ 26 ]. Moreover, recent studies suggested that mangrove plants could be important factors controlling the activity, abundance, and community structure of ammonia oxidizers [ 14 , 15 , 18 ].…”

Diversity, metabolism and cultivation of archaea in mangrove ecosystems

“…Woesearchaeota is abundant in mangrove sediments in some particular sites, e.g., in the mangrove sediments of Daya Bay (China), and Dongzhaigang (China), accounting for 10-27% of the total archaea (Li et al 2016;Zhang et al 2018). Lokiarchaeota, formerly named MBG-B (Marine Benthic Group B) and DSAG (Deep Sea Archaeal Group), are also important components of mangrove sediments, accounting for 2-15% of the total archaea (Fig.…”