Anammox bacteria detected in fish intestinal tract systems

Chan, Ho Wang; Meng, Han; Gu, Ji‐Dong

doi:10.18063/aeb.2016.01.010

Cited by 9 publications

(2 citation statements)

References 16 publications

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“…Anammox is considered as one of the most important ways for N removal from the marine ecosystem, which might contribute more than 50 % of the total N loss in world oceans (Devol 2003). Since their discovery in 1990s, the anammox bacteria, affiliated to the Planctomycetes (Strous et al 1999), have been detected in wastewater treatment plants and in various natural ecosystems, including marine (Thamdrup and Dalsgaard 2002, Dalsgaard et al 2003, Kuypers et al 2003, Kuypers et al 2005a, Kuypers et al 2005b, Hamersley et al 2007, Lam et al 2009, Ward et al 2009, Li and Gu 2013, Castro-Gonzalez et al 2014, freshwater (Penton et al 2006, Schubert et al 2006, Zhang et al 2007, Lee et al 2014, Smith et al 2015, terrestrial (Humbert et al 2010, Wang and, extreme (Byrne et al 2009, Li et al 2010a, Zhu et al 2015, intestinal tracts of fish (Chan et al 2016), and polychaetes (Li and Gu 2016). Several studies have also reported the activity and biodiversity of anammox bacteria in aquaculture systems, such as the biofilters in freshwater recirculating aquaculture systems (Tal et al 2006, Lahav et al 2009, van Kessel et al 2010, van Kessel et al 2011, Castine et al 2012), a denitrification reactor for a recirculating aquaculture system (Lahav et al 2009), and sediments of the shrimp ponds (Amano et al 2011) and marine aquaculture zones (Li et al 2010b, Li et al 2011b.…”

Section: Introductionmentioning

confidence: 99%

The diversity and distribution of anammox bacteria in the marine aquaculture zones

2016

Appl Microbiol Biotechnol

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The accumulation of toxic inorganic nitrogen is one of the major water quality problems in intensive aquaculture systems, thus the N removal in aquaculture systems is an important issue for the sustainable development of aquaculture. To understand one of the major microbial N removal processes, anaerobic ammonium oxidation (anammox), phylogenetic diversity, and distribution of anammox bacteria in sediments of four different marine aquaculture zones in Hong Kong (HK) were investigated. The 16S rRNA genes analysis indicated that sequences detected from Cheung Sha Wan (CSW) and Sok Kwu Wan (SKW) were closely related to several clusters within the Scalindua genus of anammox bacteria, including a new habitat-specific group, while only several sequences related to Scalindua and Kuenenia were detected in Sham Wan (SW) and Yim Tin Tsai East (YTTE). Most of the sequences obtained in SW and YTTE with the same PCR primers showed a low similarity to the known anammox bacteria, forming several novel groups within the Planctomycetes. However, results from the hydrazine oxidoreductase (HZO) encoding gene showed that only sequences from SW were related to the genus of Kuenenia, and sequences from other three sites were closely related to the genus of Scalindua. The community analysis showed that CSW and SKW share similar anammox bacterial community structures while SW and YTTE contain a unique anammox bacterial community. Furthermore, correlations reflect that organic matter is positively correlated with Kuenenia-like anammox bacteria, while the redox potential is significantly correlated with Scalindua-like anammox bacteria in marine aquaculture zones. Our results extend the knowledge of anammox bacteria in marine aquaculture systems and highlight the importance of environmental factors in shaping the community structures of anammox bacteria.

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Section: Introductionmentioning

confidence: 99%

The diversity and distribution of anammox bacteria in the marine aquaculture zones

2016

Appl Microbiol Biotechnol

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“…The increasing price on fuel has been proven to be one primary impact on the cost of industrial N production and also a consuming burden for farmers in the future. Pollution from over utilization of chemical fertilizers is also a major issue to the ecological quality of coastal and ocean ecosystems (Li et al, 2013;Wang and Gu, 2013a, b;Wang et al, 2013;2014;Chan et al, 2016;Li and Gu, 2016;Wu et al, 2017). Manures and legumes have shown their perspective future in nowaday agriculture (McGill, 1982;Patriquin et al, 1981;Yan et al, 2016;Xiong et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Quantification of symbiotically fixed N2 by faba bean and allocation of 15N among above- and below-ground components of faba bean, canola, and barley on a Gray Luvisol

McGill

2019

Appl Env Biotechnol

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This study was carried out to estimate N-15 allocation into different components of the above-and below-ground plant parts, and to quantify biological N-fixation in faba bean using N-15 dilution method, and both canola and barley as reference crops. Four samplings were conducted during the crop growing season, both above-and below-ground plant parts, and soil were sampled. The above-ground plant was fractionated into leaves, stems, shell, and seeds for faba bean and canola; and dead-leaves, live-leaves, stems, sheaths, husks, and seeds for barley. Roots were extracted from soil by root-washing technique and further separated from dead debris by water floatation and hand-picking. N-15 excess of faba bean above-ground parts was lower than its roots, but the reverse was true for the non-legumes (canola and barley). N-15 fractionation was apparently taking place in various plant parts. Reproductive organs of faba bean had lower N-15 excess than the vegetative ones, but reproductive organs of non-legumes (canola and barley) had higher N-15 excess than the vegetative ones. N-fixation in faba bean was quantified by using N-15 dilution method with either canola or barley as a reference crop, the quantity of N derived from atmospheric fixation was 183-199 kg N/ha/yr in the above-ground parts of faba bean and 18-22 kg N/ha/yr in faba bean roots by September 1, when faba beans were not fully matured. Either canola or barley can be a valid reference crop for N-fixation estimation in N-15 dilution method. Total difference method agreed with N-15 dilution method with less than 10% variation in this study. A peak of N-fixation was observed after faba bean flowering and the rate of N-fixation during this period was 4.0-4.7 kg N/ha/day. This study provides the key inofmration for the quantity of N-fixation from atmosphere in faba bean growing on this soil of Canada.

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Co-occurrence of nitrite-dependent anaerobic ammonium and methane oxidation processes in subtropical acidic forest soils

Meng

Wang

Chan

et al. 2016

Appl Microbiol Biotechnol

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Anaerobic ammonium oxidation (anammox) and nitrite-dependent anaerobic methane oxidation (n-damo) are two new processes of recent discoveries linking the microbial nitrogen and carbon cycles. In this study, 16S ribosomal RNA (rRNA) gene of anammox bacteria and pmoA gene of n-damo bacteria were used to investigate their distribution and diversity in natural acidic and re-vegetated forest soils. The 16S rRNA gene sequences retrieved featured at least three species in two genera known anammox bacteria, namely Candidatus Brocadia anammoxidans, Candidatus Brocadia fulgida, and Candidatus Kuenenia stuttgartiensis while the pmoA gene amplified was affiliated with two species of known n-damo bacteria Candidatus Methylomirabilis oxyfera and a newly established Candidatus Methylomirabilis sp. According to the results, the diversity of anammox bacteria in natural forests was lower than in re-vegetated forests, but no significant difference was observed in n-damo community between them. Quantitative real-time PCR showed that both anammox and n-damo bacteria were more abundant in the lower layer (10-20 cm) than the surface layer (0-5 cm). The abundance of anammox bacteria varied from 2.21 × 10(5) to 3.90 × 10(6) gene copies per gram dry soil, and n-damo bacteria quantities were between 1.69 × 10(5) and 5.07 × 10(6) gene copies per gram dry soil in the two different layers. Both anammox and n-damo bacteria are reported for the first time to co-occur in acidic forest soil in this study, providing a more comprehensive information on more defined microbial processes contributing to C and N cycles in the ecosystems.

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Anammox bacteria detected in fish intestinal tract systems

Cited by 9 publications

References 16 publications

The diversity and distribution of anammox bacteria in the marine aquaculture zones

The diversity and distribution of anammox bacteria in the marine aquaculture zones

Quantification of symbiotically fixed N2 by faba bean and allocation of 15N among above- and below-ground components of faba bean, canola, and barley on a Gray Luvisol

Co-occurrence of nitrite-dependent anaerobic ammonium and methane oxidation processes in subtropical acidic forest soils

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