Abstract
Bacteria play an important role in the marine biogeochemical cycles. However, research on the bacterial community structure of the Indian Ocean is scarce, particularly within the vertical dimension. In this study, we investigated the bacterial diversity of the pelagic, mesopelagic and bathypelagic zones of the southwestern Indian Ocean (50.46°E, 37.71°S). The clone libraries constructed by 16S rRNA gene sequence revealed that most phylotypes retrieved from the Indian Ocean were highly divergent from those retrieved from other oceans. Vertical differences were observed based on the analysis of natural bacterial community populations derived from the 16S rRNA gene sequences. Based on the analysis of the nasA gene sequences from GenBank database, a pair of general primers was developed and used to amplify the bacterial nitrate-assimilating populations. Environmental factors play an important role in mediating the bacterial communities in the Indian Ocean revealed by canonical correlation analysis.
Similar content being viewed by others
References
DeLong EF, Preston CM, Mincer T, Rich V, Hallam SJ, Frigaard NU, Martinez A, Sullivan MB, Edwards R, Brito BR, Chisholm SW, Karl DM (2006) Community genomics among stratified microbial assemblages in the ocean’s interior. Science 311:496–503. doi:10.1126/science.1120250
Ma Y, Zeng Y, Jiao N, Shi Y, Hong N (2009) Vertical distribution and phylogenetic composition of bacteria in the Eastern Tropical North Pacific Ocean. Microbiol Res 164:624–633. doi:10.1016/j.micres.2008.01.001
Yoshida A, Nishimura M, Kogure K (2007) Bacterial community structure in the Sulu Sea and adjacent areas. Deep Sea Res Part II 54:103–113. doi:10.1016/j.dsr2.2006.01.030
Massana R, Pernice M, Bunge JA, Del Campo J (2011) Sequence diversity and novelty of natural assemblages of picoeukaryotes from the Indian Ocean. ISME J 5:184–195. doi:10.1038/ismej.2010.104
Jayakumar DA, O’mullan G, Naqvi S, Ward BB (2009) Denitrifying bacterial community composition changes associated with stages of denitrification in oxygen minimum zones. Microb Ecol 58:350–362. doi:10.1007/s00248-009-9487-y
Jayakumar DA, Francis CA, Naqvi SWA, Ward BB (2004) Diversity of nitrite reductase genes (nirS) in the denitrifying water column of the coastal Arabian Sea. Aquat Microb Ecol 34:69–78. doi:10.3354/ame034069
Naqvi SWA, Jayakumar DA, Narvekar PV, Naik H, Sarma VVSS, DeSouza W, Joseph S, George MD (2000) Increased marine production of N2O due to intensifying anoxia on the Indian continental shelf. Nature 408:346–349. doi:10.1038/35042551
Ward BB, Devol AH, Rich JJ, Chang BX, Bulow SE, Naik H, Pratihary A, Jayakumar A (2009) Denitrification as the dominant nitrogen loss process in the Arabian Sea. Nature 461:78–81. doi:10.1038/nature08276
Allen AE, Booth MG, Verity PG, Frischer ME (2005) Influence of nitrate availability on the distribution and abundance of heterotrophic bacterial nitrate assimilation genes in the Barents Sea during summer. Aquat Microb Ecol 39:247–255. doi:10.3354/ame039247
Kirchman DL (1994) The uptake of inorganic nutrients by heterotrophic bacteria. Microb Ecol 28:255–271. doi:10.1007/BF00166816
Hong Y, Xu X, Kan J, Chen F (2013) Linking seasonal inorganic nitrogen shift to the dynamics of microbial communities in the Chesapeake Bay. Appl Microbiol Biotechnol 98:3219–3229. doi:10.1007/s00253-013-5337-4
Kraft B, Tegetmeyer HE, Sharma R, Klotz MG, Ferdelman TG, Hettich RL, Geelhoed JS, Strous M (2014) The environmental controls that govern the end product of bacterial nitrate respiration. Science 345:676–679. doi:10.1126/science.1254070
Legendre L, Gosselin M (1989) New production and export of organic matter to the deep ocean: consequences of some recent discoveries. Limnol Oceanogr 34:1374–1380. doi:10.4319/lo.1989.34.7.1374
Richardson DJ, Berks BC, Russell DA, Spiro S, Taylor CJ (2001) Functional biochemical and genetic diversity of prokaryotic nitrate reductases. Cell Mol Life Sci 58:165–178. doi:10.1007/PL00000845
Allen AE, Booth MG, Frischer ME, Verity PG, Zehr JP, Zani S (2001) Diversity and detection of nitrate assimilation genes in marine bacteria. Appl Environ Microbiol 67:5343–5348. doi:10.1128/AEM.67.11.5343-5348.2001
Cai HY, Jiao NZ (2008) Diversity and abundance of nitrate assimilation genes in the northern South China Sea. Microb Ecol 56:751–764. doi:10.1007/s00248-008-9394-7
Jiang X, Dang H, Jiao N (2015) Ubiquity and diversity of heterotrophic bacterial nasA genes in diverse marine environments. PLoS ONE. doi:10.1371/journal.pone.0117473
Bradley PB, Sanderson MP, Frischer ME, Brofft J, Booth MG, Kerkhof LJ, Bronk DA (2010) Inorganic and organic nitrogen uptake by phytoplankton and heterotrophic bacteria in the stratified Mid-Atlantic Bight. Estuar Coast Shelf Sci 88:429–441. doi:10.1016/j.ecss.2010.02.001
García-Martínez J, Acinas SG, Massana R, Rodríguez-Valera F (2002) Prevalence and microdiversity of Alteromonas macleodii-like microorganisms in different oceanic regions. Environ Microbiol 4:42–50. doi:10.1046/j.1462-2920.2002.00255.x
Dunsmore B, Youldon J, Thrasher DR, Vance I (2006) Effects of nitrate treatment on a mixed species oil field microbial biofilm. J Ind Microbiol Biotechnol 33:454–462. doi:10.1007/s10295-006-0095-2
Bowman JP, McMeekin TA (2005) Alteromonadales ord. nov. Bergey’s Manual® of systematic bacteriology. Springer, Berlin, pp 443–491
Moran MA, Belas R, Schell MA, Gonzalez JM, Sun F, Sun S, Binder BJ, Edmonds J, Ye W, Orcutt B, Howard EC, Meile C, Palefsky W, Goesmann A, Ren Q, Paulsen I, Ulrich LE, Thompson LS, Saunders E, Buchan A (2007) Ecological genomics of marine Roseobacters. Appl Environ Microbiol 73:4559–4569. doi:10.1128/AEM.02580-06
West NJ, Obernosterer I, Zemb O, Lebaron P (2008) Major differences of bacterial diversity and activity inside and outside of a natural iron-fertilized phytoplankton bloom in the Southern Ocean. Environ Microbiol 10:738–756. doi:10.1111/j.1462-2920.2007.01497.x
Acknowledgments
We thank Umpathy Kanagarajan for his valuable discussion and suggestions. The authors would like to thank Enago (www.enago.cn) for the English language review. This work was supported by China MOST 973 Grant 2013CB955700.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Jiang, X., Jiao, N. Vertical Distribution of Bacterial Communities in the Indian Ocean as Revealed by Analyses of 16S rRNA and nasA Genes. Indian J Microbiol 56, 309–317 (2016). https://doi.org/10.1007/s12088-016-0585-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12088-016-0585-5