Idioma:

Abundance and composition of denitrifiers in response to Spartina alterniflora invasion in estuarine sediment

Zhang, Qiufang ; Peng, Jingjing ; Chen, Qian ; Yang, Xiaoru ; Hong, Youwei ; Su, Jianqiang

Canadian journal of microbiology, 2013-12, Vol.59 (12), p.825-836 [Periódico revisado por pares]

Canada: NRC Research Press

Texto completo disponível

Citações Citado por

Enviar para

Título:
Abundance and composition of denitrifiers in response to Spartina alterniflora invasion in estuarine sediment
Autor: Zhang, Qiufang ; Peng, Jingjing ; Chen, Qian ; Yang, Xiaoru ; Hong, Youwei ; Su, Jianqiang
Assuntos: Bacteria - classification ; Bacteria - genetics ; Bacteria - isolation & purification ; Brackish ; China ; Cyperus ; Cyperus - physiology ; Cyperus malaccensis ; Denitrification ; denitrifying microorganisms ; Environmental aspects ; Estuaries ; Estuarine sediments ; Flowers & plants ; Genes ; Geologic Sediments - microbiology ; indigenous species ; introduced plants ; Introduced Species ; Invasive species ; Kandelia candel ; Microbial Consortia ; Nitrates - metabolism ; nitrite reductase ; Nitrite Reductases - genetics ; nitrites ; Poaceae - physiology ; population size ; Rhizophoraceae - physiology ; Rivers ; Sediments ; Spartina alterniflora ; Vegetation ; vegetation types
É parte de: Canadian journal of microbiology, 2013-12, Vol.59 (12), p.825-836
Notas: http://dx.doi.org/10.1139/cjm-2013-0516
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Nitrite reduction is regulated by nitrite reductase encoded by nirK and nirS genes. This study aimed to investigate the abundance and composition of nirK- and nirS-containing denitrifiers in response to Spartina alterniflora invasion at the Jiulong River estuary, China. The sediment samples (depth: 0–5.0 and 5.1–20 cm) were collected from 3 vegetation zones, 1 dominated by the exotic plant S.alterniflora, 1 dominated by the native plant Kandelia candel, and 1 dominated by the native plant Cyperus malaccensis, and from an unvegetated flat zone. nirK- and nirS-containing denitrifier population sizes were lower in the invaded and nonvegetated zones than in those dominated by native K.candel and C.malaccensis, which were impacted by depth – vegetation species interaction. The ratios of nirS to nirK abundance ranged from 42.10 to 677.27, with the lowest ratio found for the upper layer in the invaded zone. The nirK-containing denitrifier compositions showed a 35% similarity between invaded zone and others. Most of the sequences of nirK genes recovered from the S.alterniflora zone were specific and distinct from those of nirK genes recovered from other vegetation types; nirS genes in the invaded zone were highly divergent. These results reveal that S.alterniflora invasion has a significant effect on the abundance and composition of both nirK- and nirS-containing denitrifiers, and nirS-containing denitrifiers were less responsive to invasion than nirK-containing denitrifiers.
Editor: Canada: NRC Research Press
Idioma: Inglês

Links

View this record in MEDLINE/PubMed

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Abundance and composition of denitrifiers in response to Spartina alterniflora invasion in estuarine sediment

Zhang, Qiufang ; Peng, Jingjing ; Chen, Qian ; Yang, Xiaoru ; Hong, Youwei ; Su, Jianqiang

Canada: NRC Research Press

Buscando em bases de dados remotas. Favor aguardar.