Response of microbial communities to bioturbation by artificially introducing macrobenthos to mudflat sediments for in situ bioremediation in a typical semi-enclosed bay, southeast China

Ma, Ying; Hu, Anyi; Yu, Chang‐Ping; Yan, Qingpi; Xizhu, Yan; Wang, Yongzhong; Deng, Feiqi; Xiong, Hejian

doi:10.1016/j.marpolbul.2015.03.003

Cited by 27 publications

(13 citation statements)

References 56 publications

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“…Previous studies also showed that macrobenthos abundance significantly influence the ammonia-oxidizing bacterial diversity of β-Proteobacteria (15), as well as the release and distribution of PAHs (16), and promote the growth of bacteria, which might participate in the oil degradation processes (17)(18)(19). Our previous studies also showed that the macrobenthos (Nereids and Bivalves) bioturbation enhanced the diversity of archaea and stimulated the growth of ecologically important groups of bacteria and archaea (20,21).…”

Section: Introductionmentioning

confidence: 56%

Microeukaryotic Community Structure and Dynamics During Macrobenthos Bioremediation in Intertidal Mudflat Sediments of Sansha Bay, China

Ouyang

Wei

et al. 2017

Jundishapur J Microbiol

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Section: Introductionmentioning

confidence: 56%

Microeukaryotic Community Structure and Dynamics During Macrobenthos Bioremediation in Intertidal Mudflat Sediments of Sansha Bay, China

Ouyang

Wei

et al. 2017

Jundishapur J Microbiol

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“…These OTUs were mainly affiliated to Nitrosopumilus (approximately 57% of sequences), Nitrososphaera (approximately 10% of sequences), and Nitrosotenuis (approximately 10% of sequences) lineage. The other two clusters fell into uncultured cluster comprised of marine/estuary sediment clones from the Yangtze Estuary, East China Sea, and intertidal mudflat (Y. Y. Li et al, ; Ma et al, ; Pester et al, ; Yu et al, ; Zheng et al, ). Nitrosopumilus ‐like sequences were amplified in all samples (Figure ).…”

Section: Resultsmentioning

confidence: 99%

Shifts in the Community Dynamics and Activity of Ammonia‐Oxidizing Prokaryotes Along the Yangtze Estuarine Salinity Gradient

et al. 2018

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Ammonia oxidation, the first and rate-limiting step in nitrification, plays a critical role in the nitrogen cycle. However, the links between the dynamics of ammonia-oxidizing communities and ecosystem processes along the estuarine salinity gradient remain uncertain. In this study, we examined the diversity, abundance, and community structure of ammonia-oxidizing prokaryotes, and the potential nitrification rates along the Yangtze estuarine salinity gradient. Phylogenetic analysis showed that the predominant ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) fell within the Nitrosospira and Nitrosopumilus clusters, respectively. The AOB amoA gene abundance (4.67 × 10 5 to 3.90 × 10 7 copies per gram of dry sediment) outnumbered AOA (5.14 × 10 4 to 8.88 × 10 6 copies per gram of dry sediment). The potential nitrification rates varied between 0.13 and 0.63 μg N·g À1 ·day À1 and related only to AOA amoA gene abundance. Salinity had significant effects on AOA amoA gene abundance, nitrification rates, and the community structure of ammonia-oxidizing prokaryotes. Principal coordinate analysis showed that the AOB amoA gene clones derived from the middle-and high-salinity regions behaved as a cohesive group, while all the low-salinity clone libraries were grouped together. Moreover, the distribution of AOA communities showed a distinct salinity differentiation. Overall, this study improves the understanding of the dynamic shifts in ammonia-oxidizing microorganisms in the Yangtze Estuary.

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“…In the present study, Proteobacteria was also the most dominant phylum (Figure a), and a similar situation was found in other studies (Andrei et al, ; Ma et al, ; Shen et al, ; Zhang, Hu, Ren, & Zhang, ; Zhu, Wang, Zhang, Zhu, & Zou, ). However, the total number of bacterial phyla was similar to that in sandy tidal flat (18 phyla), wetland (20 phyla) and early biofilms (11 phyla) (Peng, Li, Lu, Xiao, & Yang, ; Shen et al, ; Zhu et al, ), but less than that in mudflats (53), hypersaline sapropels (59 phyla) and mangrove mudflats (57 phyla) (Ma et al, ; Andrei et al, ; Zhang, Hu, Ren, & Zhang, ), most likely because of the differences in the physicochemical properties and disturbances in the environments. The main reason for these relationships might also be that the organic matter content was lower, and the oxygen content was higher in the sandy tidal flat than in the other mudflat habitats.…”

Section: Discussionmentioning

confidence: 99%

“…The S. nudus has a clear ecological function of transporting organic matter from the surface layer into the bottom sediments (Li, Zhu, Guo, Xie, Huang et al, ), and plays an important role in the transfer of organic matter and bacterial communities in the sediment. Previous studies found that the relative abundances of the genera Propionigenium of Fusobacteria, Fusibacter of Firmicutes, Spirochaeta of Spirochaetes, Desulfococcus of Deltaproteobacteria, and Nitrospirae LCP ‐6 are increased by the bioturbation of the macrobenthos in mudflat sediments (Ma et al, ) and that the abundance of bacteria was greater in burrows than in oxygen‐poor sediments (Papaspyrou et al, ). Proteobacterieae includes alpha‐, beta‐, delta‐, and gamma‐proteobacteria, and many kinds of microbes play an important role in sulfate‐reducing or nitrogen‐fixing (Ma et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…The bacterial community and activity depend on organic content, distribution, feeding habits, and excreta of macrobenthos (Kristensen & Kostka, ). A previous study shows that the relative abundance of the genera Propionigenium of Fusobacteria, Fusibacter of Firmicutes, Spirochaeta of Spirochaetes, Desulfococcus of Deltaproteobacteria, and Nitrospirae LCP ‐6 increased by the bioturbation of macrobenthos in mudflat sediments (Ma et al, ), and the abundance of bacteria was greater in burrow sediments than in non‐burrow sediments (Papaspyrou, Gregersen, Cox, Thessalou‐Legaki, & Kristensen, ). The abundance of Acidobacteria, Actinobacteria, Nitrospirae, and some other bacterial phyla can be influenced by the bioturbation of Meretrix meretrix and Perinereis aibuhitensis , dissolved oxygen and total dissolved inorganic nitrogen in sandy sediments (Shen et al, ), and the abundance of nitrogen‐cycling functional genes can be directly influenced by the bioturbation of Upogebia deltaura in coastal sediments (Laverock et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Bioturbation of peanut worms Sipunculus nudus on the composition of prokaryotic communities in a tidal flat as revealed by 16S rRNA gene sequences

Hu²,

Guo

et al. 2019

MicrobiologyOpen

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To understand the impacts of peanut worms Sipunculus nudus on the prokaryotic community composition in a tidal flat, an onsite investigation was conducted in Suixi in the Beibu Gulf (109.82E, 21.35N) in the burrow sediments, non‐burrow sediments and the sediments without peanut worm disturbance (control). The16S rRNA gene Illumina MiSeq sequencing was used to investigate the microbial communities and their response to bioturbation by S. nudus in a sandy tidal flat. A total of 18 bacteria phyla were detected, and Proteobacteria and Cyanobacteria constituted the majority of the prokaryotic community in the samples. The distribution of the relative abundances of genera showed that approximately 6.99%–17% of the reads in the samples were classified into 25 known genera. Sulfate‐reducing bacteria (Desulfococcus and Desulfosarcina) were the most abundant taxa, followed by Thermodesulfovibrionaceae LCP‐6, indicating that sulfate reduction is the main process in the sandy tidal flat. The abundances of Desulfococcus, LCP‐6 and Cyanobacterium in the non‐burrow sediment were greater than in the burrow sediment, suggesting that the anoxic condition is more suitable for Desulfococcus and LCP‐6 when the activity of S. nudus is absent. The biomass of Cyanobacterium was decreased by the feeding bioturbation of S. nudus. Meanwhile, the relative abundance of the Bacteroidetes Luteimonas in the burrow sediments was significantly greater than in the non‐burrow sediment, and there was a strong relationship between S. nudus bioturbation and increased in oxygen contents and oxidation‐reduction potentials in the burrow sediment. The abundances of Desulfococcus and LCP‐6 were greater in the middle layer (20–30 cm) than in the top layer in the non‐burrow sediment. However, the middle and bottom layers (20–30, 30–40 cm) had higher abundances of these genera than did the upper layers (0–10, 10–20 cm) in the burrow sediments. The abundances of the Fusobacteria Propionigenium and the Spirochaetes Spirochaeta were greater in the middle and bottom layers (20–30 cm, 30–40 cm) than in the top layers (0–10, 10–20 cm) in the burrow sediment, but this phenomenon was not found in the non‐burrow sediment. This study demonstrates that bioturbation by S. nudus plays an important role in reshaping the bacterial community composition in intertidal regions.

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Response of microbial communities to bioturbation by artificially introducing macrobenthos to mudflat sediments for in situ bioremediation in a typical semi-enclosed bay, southeast China

Cited by 27 publications

References 56 publications

Microeukaryotic Community Structure and Dynamics During Macrobenthos Bioremediation in Intertidal Mudflat Sediments of Sansha Bay, China

Microeukaryotic Community Structure and Dynamics During Macrobenthos Bioremediation in Intertidal Mudflat Sediments of Sansha Bay, China

Shifts in the Community Dynamics and Activity of Ammonia‐Oxidizing Prokaryotes Along the Yangtze Estuarine Salinity Gradient

Bioturbation of peanut worms Sipunculus nudus on the composition of prokaryotic communities in a tidal flat as revealed by 16S rRNA gene sequences

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