NDLI: Insights into the role of plant on ammonia-oxidizing bacteria and archaea in the mangrove ecosystem

Content Provider	Springer Nature Link
Author	Wang, Haitao Su, Jianqiang Zheng, Tianling Yang, Xiaoru
Copyright Year	2015
Abstract	The aim of this study was to elucidate the impact of plant on the activity, abundance, and the community composition of the ammonia oxidizers, including both ammonia-oxidizing archaea (AOA) and bacteria (AOB). Moreover, the relationship between AOA and AOB in mangrove sediment was also analyzed.Sediment used for microcosm experiments was collected in the mangrove wetland. The native plant species Kandelia obovata and invasive species Spartina alterniflora were selected. Nitrifying activity was determined by assaying the potential nitrification rate (PNR). Abundances of gene and transcript were measured via real-time quantitative PCR (qPCR). Terminal restriction fragment length polymorphism (T-RFLP) was used to analyze the nitrifier community structures. Clone libraries were constructed for further phylogenetic analysis.PNR and abundances of both AOA and AOB were greatly enhanced in the vegetated sediments. S. alterniflora showed a greater promoting effect on nitrification activity, indicating the potential of exotic invasion on perturbing the nitrogen balance. Abundance of AOB transcript was hundreds of times higher than that of AOA. Moreover, ammonia-oxidizing communities were distinctly grouped responding to vegetation with two plant species. Along with direct impact of plants, these variations are as well related to the different sediment properties. Phylogenetic analysis revealed that both AOA and AOB communities formed apparent clusters. The latter contained two Nitrosomonas and Nitrosospira clusters. The Nitrosomonas genus is predominant over Nitrosospira genus, which might be due to the better adaption of Nitrosomonas to the flooded habitats in sediments.Wetland plants were found to influence the activity, abundance, and community structure of ammonia oxidizers. Moreover, AOB is suggested to be more significant than AOA in nitrogen cycling in mangrove wetlands.
Starting Page	1212
Ending Page	1223
Page Count	12
File Format	PDF
ISSN	14390108
Journal	Journal of Soils and Sediments
Volume Number	15
Issue Number	5
e-ISSN	16147480
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-02-04
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ammonia oxidation Ammonia-oxidizing archaea (AOA) Ammonia-oxidizing bacteria (AOB) Mangrove Plant Soil Science & Conservation Environment Environmental Physics
Content Type	Text
Resource Type	Article
Subject	Stratigraphy Earth-Surface Processes

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