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Abundance, community structure and diversity of nitrifying bacterial enrichments from low and high saline brackishwater environments

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Title Abundance, community structure and diversity of nitrifying bacterial enrichments from low and high saline brackishwater environments
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Creator PK. Patil
V. Baskaran
TN. Vinay
Satheesha Avunje
Leo-Antony M
MS. Shekhar
S.V.Alavandi
KK.Vijayan
 
Subject ammonia-oxidizing bacteria, heterotrophic denitrifying bacteria, microbial diversity, nitrite-oxidizing bacteria, salinity
 
Description Not Available
The study reports diversity in nitrifying microbial enrichments from low (0 5–
5&) and high (18–35&) saline ecosystems. Microbial community profiling of
ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB)
enrichments was analysed by sequencing 16S rRNA and was processed using
Mothur pipeline. The a-diversity indices showed the richness of nitrifying
bacterial consortia from the high saline environment and were clustering based
on the source of the sample. AOB and NOB enrichments from both the
environments showed diverse lineages of phyla distributed in both groups with
38 and 34 phyla from low saline and 53 and 40 phyla in high saline sources,
respectively. At class level, a- and c-proteobacteria were found to be more
dominant in both the enrichments. AOBs and NOBs in enrichments from low
saline environments were dominated by Nitrosomonadaceae, Gallionellaceae
(Nitrotoga sp.) and Ectothiorhodospiraceae and Nitrospira, respectively.
Though Chromatiaceae were present in both AOB and NOB enrichments,
Nitrosoglobus and Nitrosococcus dominated the AOBs while NOBs were
dominated by uncultured genera, whereas Rhizobiales were found in both the
enrichments. AOBs and NOBs in enrichments from high saline environments
were dominated by Nitrospira-like AOBs, Nitrosomonas and Nitrosococcus
genera, whereas ammonia-oxidizing archaea (AOA) group included
Nitrosopumilus and Nitrososphaera genera comprising and Nitrospirae,
respectively. The majority of the genera obtained in both the salinities were
found to be either uncultured or unclassified groups. Results of the study
suggest that the AOB and NOB consortia have unique and diverse microbes in
each of the enrichments, capable of functioning in aquaculture systems
practised at different salinities (0–60 ppt).
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ICAR
 
Date 2022-02-18T07:12:33Z
2022-02-18T07:12:33Z
2020-04-01
 
Type Journal
 
Identifier Patil, P.K., Baskaran, V., Vinay, T.N., Avunje, S., Leo‐Antony, M., Shekhar, M.S., Alavandi, S.V. and Vijayan, K.K., 2021. Abundance, community structure and diversity of nitrifying bacterial enrichments from low and high saline brackishwater environments. Letters in Applied Microbiology, 73(1), pp.96-106.
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/69879
 
Language English
 
Relation Not Available;
 
Publisher Elsevier