Bacterial Communities in the Rhizospheres of Three Mangrove Tree Species from Beilun Estuary, China

Wu, Peng; Xiong, Xiaofei; Xu, Zhen; Lu, Chuqian; Cheng, Hao; Lyu, Xiangli; Zhang, Jinghuai; He, Wei; Deng, Wei; Lyu, Yihua; Lou, Quansheng; Hong, Yiguo; Fang, Hongda

doi:10.1371/journal.pone.0164082

Cited by 67 publications

(74 citation statements)

References 41 publications

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“…Mangrove forests are complex and dynamic ecosystems that are highly variable in several physicochemical conditions including salinity, flooding, light, temperature, and nutrient, which promote the bacterial diversity. It was reported that mangrove species were the main factors influencing their rhizosphere bacterial communities [26]. The run-off water in tourist sites may come from various sources such as swimmers, trash disposal from tourists, domestic wastewater, and illegal discharge from recreation boats [24].…”

Section: Discussionmentioning

confidence: 99%

Marine bacterial communities in the upper gulf of Thailand assessed by Illumina next-generation sequencing platform

Nimnoi

Pongsilp

2020

BMC Microbiol

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Background: The total bacterial community plays an important role in aquatic ecosystems. In this study, bacterial communities and diversity along the shores of the Upper Gulf of Thailand were first characterized. The association between bacterial communities and types of land use was also evaluated. Results: The bacterial communities and diversity of seawater in the Upper Gulf of Thailand, with regard to types of land use, were first revealed by using Illumina next-generation sequencing. A total of 4953 OTUs were observed from all samples in which 554 OTUs were common. The bacterial communities in sampling sites were significantly different from each other. The runoff water from three types of land use significantly affected the community richness and diversity of marine bacteria. Aquaculture sites contained the highest levels of community richness and diversity, followed by mangrove forests and tourist sites. Seawater physicochemical parameters including salinity, turbidity, TSS, total N, and BOD 5 , were significantly different when grouped by land use. The bacterial communities were mainly determined by salinity, total N, and total P. The species richness estimators and OTUs were positively correlated with turbidity. The top ten most abundant phyla and genera as well as the distribution of bacterial classes were characterized. The Proteobacteria constituted the largest proportions in all sampling sites, ranging between 67.31 and 78.80%. The numbers of the Marinobacterium, Neptuniibacter, Synechococcus, Candidatus Thiobios, hgcI clade (Actinobacteria), and Candidatus Pelagibacter were significantly different when grouped by land use. Conclusions: Type of land use significantly affected bacterial communities and diversity along the Upper Gulf of Thailand. Turbidity was the most influential parameter affecting the variation in bacterial community composition. Salinity, total N, and P were the ones of the important factors that shaped the bacterial communities. In addition, the variations of bacterial communities from site-to-site were greater than within-site. The Proteobacteria, Bacteroidetes, Actinobacteria, Cyanobacteria, Verrucomicrobia, Euryarchaeota, Planctomycetes, Firmicutes, Deep Sea DHVEG-6, and Marinimicrobia were the most and common phyla distributed across the Upper Gulf of Thailand.

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Section: Discussionmentioning

confidence: 99%

Marine bacterial communities in the upper gulf of Thailand assessed by Illumina next-generation sequencing platform

Nimnoi

Pongsilp

2020

BMC Microbiol

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“…As bacteria of the phylum Chloroflexi were more significantly detected in the CF-biofilm than in AS, it implies that the phylum Chloroflexi contributed to reducing N 2 O emission to adhere within the CF carrier. In addition, the order envOPS12, which belongs to the phylum Chloroflexi, has been found in a wide range of anaerobic environments, such as freshwater, sediments, marine water, sponges, anaerobic sludge bioreactors and anammox reactors [27,28]. Because envOPS12 grows in anaerobic conditions, it was hypothesized that a large quantity of envOPS12 was detected because the CF-biofilm (DL) was in an anaerobic condition.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Nitrous Oxide Emission Reduction Potential of an Aerobic Bioreactor Packed with Carbon Fibres for Swine Wastewater Treatment

Yamashita

Shiraishi²,

Yokoyama

et al. 2019

Energies

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Nitrous oxide (N 2 O) is a potent greenhouse gas that is emitted from wastewater treatment plants. To reduce emissions of N 2 O from swine wastewater treatment plants, we constructed an experimental aerobic bioreactor packed with carbon fibres (ca. 1 m 3 bioreactor) as an alternative to conventional activated sludge treatment. The N 2 O emission factor for the aerobic bioreactor packed with carbon fibres (CF) was 0.002 g N 2 O-N/g TN-load and the value for the typical activated sludge (AS) reactor was 0.013 g N 2 O-N/g TN-load. The CF treatment method achieved more than 80% reduction of N 2 O emissions, compared with the AS treatment method. The experimental introduction of a CF carrier into an actual wastewater treatment plant also resulted in a large reduction in N 2 O generation. Specifically, the N 2 O emission factors decreased from 0.040 to 0.005 g N 2 O-N/g TN-load following application of the carrier. This shows that it is possible to reduce N 2 O generation by more than 80% by using a CF carrier during the operation of an actual wastewater treatment plant. Some bacteria from the phylum Chloroflexi, which are capable of reducing N 2 O emissions, were detected at a higher frequency in the biofilm on the CF carrier than in the biofilm formed on the AS reactor.

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“…2B, 3B and Additional le 2: Table S2). To avoid the effects of rhizosphere in mangroves [25], we only collected the bulk sediments away from the plant roots. However, the location and depth were still the signi cant spatial dimensions that shaped the microbial communities in mangrove sediments, suggesting that the distribution of microbial communities in mangrove sediments was highly territorialized in a fairly close sampling range (e.g., in the same city for sampling).…”

Section: Discussionmentioning

confidence: 99%

High-throughput amplicon sequencing reveals the spatiotemporal effects, abiotic and biotic shaping factors for the microbial communities in tropical mangrove sediments in Sanya, China

Qu¹,

Gao²,

Wu³

et al. 2020

Preprint

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Background Microbial roles in element cycling and nutrient providing are crucial for mangrove ecosystems and serve as important regulators for climate change in Earth ecosystem. However, some key information about the spatiotemporal influences and abiotic and biotic shaping factors for the microbial communities in mangrove sediments remains lacking. Methods In this work, 22 sediment samples were collected from multiple spatiotemporal dimensions, including three locations, two depths, and four seasons, and the bacterial, archaeal, and fungal community structures in these samples were studied using amplicon sequencing. Results The microbial community structures were varied in the samples from different depths and locations based on the results of LDA effect size analysis, principal coordinate analysis, the analysis of similarities, and permutational multivariate ANOVA. However, these microbial community structures were stable among the seasonal samples. Linear fitting models and Mantel test showed that among the 13 environmental factors measured in this study, the sediment particle size (PS) was the key abiotic shaping factor for the bacterial, archaeal, or fungal community structure. Besides PS, salinity and humidity were also significant impact factors according to the canonical correlation analysis (p ≤ 0.05). Co-occurrence networks demonstrated that the bacteria assigned into phyla Ignavibacteriae, Proteobacteria, Bacteroidetes, Chloroflexi, and Acidobacteria were the key biotic factors for shaping the bacterial community in mangrove sediments. Conclusions This work showed the variability on spatial dimensions and the stability on temporal dimension for the bacterial, archaeal, or fungal microbial community structure, indicating that the tropical mangrove sediments are versatile but stable environments. PS served as the key abiotic factor could indirectly participate in material circulation in mangroves by influencing microbial community structures, along with salinity and humidity. The bacteria as key biotic factors were found with the abilities of photosynthesis, polysaccharide degradation, or nitrogen fixation, which were potential indicators for monitoring mangrove health, as well as crucial participants in the storage of mangrove blue carbons and mitigation of climate warming. This study expanded the knowledge of mangroves for the spatiotemporal variation, distribution, and regulation of the microbial community structures, thus further elucidating the microbial roles in mangrove management and climate regulation.

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Bacterial Communities in the Rhizospheres of Three Mangrove Tree Species from Beilun Estuary, China

Cited by 67 publications

References 41 publications

Marine bacterial communities in the upper gulf of Thailand assessed by Illumina next-generation sequencing platform

Marine bacterial communities in the upper gulf of Thailand assessed by Illumina next-generation sequencing platform

Evaluation of the Nitrous Oxide Emission Reduction Potential of an Aerobic Bioreactor Packed with Carbon Fibres for Swine Wastewater Treatment

High-throughput amplicon sequencing reveals the spatiotemporal effects, abiotic and biotic shaping factors for the microbial communities in tropical mangrove sediments in Sanya, China

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