Seasonal patterns and environmental drivers of nirS- and nirK-encoding denitrifiers in sediments of Daya Bay, China

• Autorzy: Shi, Rongjun , Xu, Shumin , Qi, Zhanhui , Huang, Honghui , Liang, Qingyang
• Języki publikacji: EN

Abstrakty

EN

The seasonal patterns of the denitrifiers (denitrifying bacteria) in the sediment of Daya Bay, southern China, were examined using quantitative PCR and high-throughput MiSeq sequencing methods in spring, summer and winter. The abundance and diversity of nirS-encoding denitrifiers were much higher than that of nirK-encoding denitrifiers, indicating that the former probably dominated the denitrification processes in sediments of Daya Bay. The average abundance and diversity of nirS-encoding denitrifiers were much higher in spring than that in summer and winter, on the other hand, the abundance of nirK-encoding denitrifiers showed the opposite pattern. The species composition of nirS-encoding denitrifiers community in spring differed significantly from that in summer and winter, whereas, no significant difference existed between summer and winter. The dominant environmental drivers for the diversity of community species were NO₂^-, NO₃^- and DO concentrations. The abundances of dominant genera of nirS-encoding denitrifiers, Accumulibacter sp. and Cuprizvidus sp., were significantly higher in summer and winter than that in spring, and were negatively correlated with NO₂^-, NO₃^-, and DO concentrations ( p < 0.05). In contrast, the abundances of Azoarcus sp. and Halomonas sp., were highest in spring, and were positively correlated with NO₃^- and NO₂^- content (p < 0.05). For nirK-encoding denitrifiers, a significant difference in community composition was observed between spring and winter. No obvious correlation was found between community composition of nirK-encoding denitrifiers and environmental parameters.

Słowa kluczowe

EN

abundance; community structure; nirS-encoding denitrifiers; nirK-encoding denitrifiers; sediment; Daya Bay

• Czasopismo: Oceanologia
• Rocznik: 2019
• Tom: No. 61 (3)
• Strony: 308--320
• Opis fizyczny: Bibliogr. 55 poz., mapa, rys., tab., wykr.

Twórcy

autor

Shi, Rongjun

• Guangdong Provincial Key Laboratory of Fishery Ecology and Environment and Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou, China

autor

Xu, Shumin

• Guangdong Provincial Key Laboratory of Fishery Ecology and Environment and Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou, China
• College of Marine Science of Shanghai Ocean University, Shanghai, China

autor

Qi, Zhanhui

• Guangdong Provincial Key Laboratory of Fishery Ecology and Environment and Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou, China,

autor

Huang, Honghui

• Guangdong Provincial Key Laboratory of Fishery Ecology and Environment and Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou, China,

autor

Liang, Qingyang

• Guangdong Provincial Key Laboratory of Fishery Ecology and Environment and Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou, China

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).

Identyfikatory

DOI

10.1016/j.oceano.2019.01.002