Bacterial activity in hydrogenetic ferromanganese crust from the Indian Ocean: a combined geochemical, experimental and pyrosequencing study
The Afanasiy-Nikitin Seamount (ANS) in the Equatorial Indian Ocean harbors hydrogenetic ferromanganese (Fe–Mn) crusts. It was hypothesized that the bacteria associated with the crust catalyze the precipitation of metal hydroxides in seawater more than abiotic dissolution, contributing to hydrogeneti...
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| Veröffentlicht in: | Environmental earth sciences 2017-03, Vol.76 (5), p.1, Article 191 |
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| description | The Afanasiy-Nikitin Seamount (ANS) in the Equatorial Indian Ocean harbors hydrogenetic ferromanganese (Fe–Mn) crusts. It was hypothesized that the bacteria associated with the crust catalyze the precipitation of metal hydroxides in seawater more than abiotic dissolution, contributing to hydrogenetic accretion on the seamount. To test this hypothesis, Fe–Mn crust samples were collected from the flanks of the ANS. Geochemical properties of water samples collected were analyzed, and simulatory laboratory experiments were conducted to quantify bacterial accretion rates. Pyrosequencing was used to delineate the community associated with the crust. The environmental parameters of the water column indicated significant differences (
p
Ni (0.003) > Co (0.002 mg g
−1
) with added glucose (0.01%) and Fe (9.09) > Mn (0.87) > Ni (0.0043) > Co (0.0008 mg g
−1
) without added glucose. Unlike the hydrothermal vent sites of the Pacific where ε- and ζ-
Proteobacteria
were reported to be dominant, the hydrogenetic Fe–Mn crusts of the ANS revealed sequences related to known Fe-, Mn- and S-oxidizing bacteria of the γ- and α-
Proteobacterial
groups. Thus, the different selective pressures in the two environments could be one of the factors that have brought about a difference in their bacterial diversity. Besides, the ambient nutrient levels could have triggered the participation of the
Proteobacterial
community of the ANS in the precipitation of Fe–Mn rich minerals. |
| doi_str_mv | 10.1007/s12665-017-6495-y |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_1871917882</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>4317125991</sourcerecordid><originalsourceid>FETCH-LOGICAL-a339t-79018acf15520e88fd0031d9581cdc7c981993541ef3eb9903c7fa09f6c293f33</originalsourceid><addsrcrecordid>eNp1UMtOwzAQjBBIVKUfwM0SVwJ23CQ2N6h4VKrUC5wt11mnrhon2A4i_8BH4ygIcWEvu1rN7MxOklwSfEMwLm89yYoiTzEp02LJ83Q4SWaEFUVaZJyf_s4MnycL7w84FiWU42KWfD1IFcAZeURxMB8mDMhYtB8q19ZgIRiFNDjXNtLW0oIHpFzvA9JxhcIe0NpWRlq0VSDtHZJItc3OWKhQDa3aQ2OUPF4j-OyiSgM2jEq2Qt3gWg_vPVhlbI186KvhIjnT8uhh8dPnydvT4-vqJd1sn9er-00qKeUhLTkmTCpN8jzDwJiuxn8qnjOiKlUqzgjnNF8S0BR2nGOqSi0x14XKONWUzpOr6W7n2ujAB3Foe2ejpCCsJJyUjGURRSaUik69Ay26-IF0gyBYjLmLKXcRcxdj7mKInGzi-Ii1Nbg_l_8lfQNrm4iw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1871917882</pqid></control><display><type>article</type><title>Bacterial activity in hydrogenetic ferromanganese crust from the Indian Ocean: a combined geochemical, experimental and pyrosequencing study</title><source>SpringerLink Journals - AutoHoldings</source><creator>Sujith, P. P. ; Gonsalves, Maria Judith B. D. ; Bhonsle, Sneha ; Shaikh, Shagufta ; LokaBharathi, P. A.</creator><creatorcontrib>Sujith, P. P. ; Gonsalves, Maria Judith B. D. ; Bhonsle, Sneha ; Shaikh, Shagufta ; LokaBharathi, P. A.</creatorcontrib><description>The Afanasiy-Nikitin Seamount (ANS) in the Equatorial Indian Ocean harbors hydrogenetic ferromanganese (Fe–Mn) crusts. It was hypothesized that the bacteria associated with the crust catalyze the precipitation of metal hydroxides in seawater more than abiotic dissolution, contributing to hydrogenetic accretion on the seamount. To test this hypothesis, Fe–Mn crust samples were collected from the flanks of the ANS. Geochemical properties of water samples collected were analyzed, and simulatory laboratory experiments were conducted to quantify bacterial accretion rates. Pyrosequencing was used to delineate the community associated with the crust. The environmental parameters of the water column indicated significant differences (
p
< 0.001) between a seamount and a non-seamount site. Experiments on Fe–Mn crust under near in situ temperature (4 ± 2 °C) and pressure (20 MPa) conditions showed significantly (
p
< 0.001) higher biotic immobilization than abiotic immobilization for Fe and Co. The sequence of immobilization was Fe (9.34) > Mn (0.63) > Ni (0.003) > Co (0.002 mg g
−1
) with added glucose (0.01%) and Fe (9.09) > Mn (0.87) > Ni (0.0043) > Co (0.0008 mg g
−1
) without added glucose. Unlike the hydrothermal vent sites of the Pacific where ε- and ζ-
Proteobacteria
were reported to be dominant, the hydrogenetic Fe–Mn crusts of the ANS revealed sequences related to known Fe-, Mn- and S-oxidizing bacteria of the γ- and α-
Proteobacterial
groups. Thus, the different selective pressures in the two environments could be one of the factors that have brought about a difference in their bacterial diversity. Besides, the ambient nutrient levels could have triggered the participation of the
Proteobacterial
community of the ANS in the precipitation of Fe–Mn rich minerals.</description><identifier>ISSN: 1866-6280</identifier><identifier>EISSN: 1866-6299</identifier><identifier>DOI: 10.1007/s12665-017-6495-y</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Accretion ; Bacteria ; Biogeosciences ; Chemical analysis ; Community involvement ; Earth and Environmental Science ; Earth Sciences ; Environmental Science and Engineering ; Geochemistry ; Geology ; Harbors ; Hydrology/Water Resources ; Hydroxides ; Iron ; Lithosphere ; Manganese compounds ; Oceanic analysis ; Original Article ; Seamounts ; Seawater ; Terrestrial Pollution ; Water analysis ; Water column ; Water sampling</subject><ispartof>Environmental earth sciences, 2017-03, Vol.76 (5), p.1, Article 191</ispartof><rights>Springer-Verlag Berlin Heidelberg 2017</rights><rights>Environmental Earth Sciences is a copyright of Springer, 2017.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a339t-79018acf15520e88fd0031d9581cdc7c981993541ef3eb9903c7fa09f6c293f33</citedby><cites>FETCH-LOGICAL-a339t-79018acf15520e88fd0031d9581cdc7c981993541ef3eb9903c7fa09f6c293f33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s12665-017-6495-y$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s12665-017-6495-y$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Sujith, P. P.</creatorcontrib><creatorcontrib>Gonsalves, Maria Judith B. D.</creatorcontrib><creatorcontrib>Bhonsle, Sneha</creatorcontrib><creatorcontrib>Shaikh, Shagufta</creatorcontrib><creatorcontrib>LokaBharathi, P. A.</creatorcontrib><title>Bacterial activity in hydrogenetic ferromanganese crust from the Indian Ocean: a combined geochemical, experimental and pyrosequencing study</title><title>Environmental earth sciences</title><addtitle>Environ Earth Sci</addtitle><description>The Afanasiy-Nikitin Seamount (ANS) in the Equatorial Indian Ocean harbors hydrogenetic ferromanganese (Fe–Mn) crusts. It was hypothesized that the bacteria associated with the crust catalyze the precipitation of metal hydroxides in seawater more than abiotic dissolution, contributing to hydrogenetic accretion on the seamount. To test this hypothesis, Fe–Mn crust samples were collected from the flanks of the ANS. Geochemical properties of water samples collected were analyzed, and simulatory laboratory experiments were conducted to quantify bacterial accretion rates. Pyrosequencing was used to delineate the community associated with the crust. The environmental parameters of the water column indicated significant differences (
p
< 0.001) between a seamount and a non-seamount site. Experiments on Fe–Mn crust under near in situ temperature (4 ± 2 °C) and pressure (20 MPa) conditions showed significantly (
p
< 0.001) higher biotic immobilization than abiotic immobilization for Fe and Co. The sequence of immobilization was Fe (9.34) > Mn (0.63) > Ni (0.003) > Co (0.002 mg g
−1
) with added glucose (0.01%) and Fe (9.09) > Mn (0.87) > Ni (0.0043) > Co (0.0008 mg g
−1
) without added glucose. Unlike the hydrothermal vent sites of the Pacific where ε- and ζ-
Proteobacteria
were reported to be dominant, the hydrogenetic Fe–Mn crusts of the ANS revealed sequences related to known Fe-, Mn- and S-oxidizing bacteria of the γ- and α-
Proteobacterial
groups. Thus, the different selective pressures in the two environments could be one of the factors that have brought about a difference in their bacterial diversity. Besides, the ambient nutrient levels could have triggered the participation of the
Proteobacterial
community of the ANS in the precipitation of Fe–Mn rich minerals.</description><subject>Accretion</subject><subject>Bacteria</subject><subject>Biogeosciences</subject><subject>Chemical analysis</subject><subject>Community involvement</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Environmental Science and Engineering</subject><subject>Geochemistry</subject><subject>Geology</subject><subject>Harbors</subject><subject>Hydrology/Water Resources</subject><subject>Hydroxides</subject><subject>Iron</subject><subject>Lithosphere</subject><subject>Manganese compounds</subject><subject>Oceanic analysis</subject><subject>Original Article</subject><subject>Seamounts</subject><subject>Seawater</subject><subject>Terrestrial Pollution</subject><subject>Water analysis</subject><subject>Water column</subject><subject>Water sampling</subject><issn>1866-6280</issn><issn>1866-6299</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1UMtOwzAQjBBIVKUfwM0SVwJ23CQ2N6h4VKrUC5wt11mnrhon2A4i_8BH4ygIcWEvu1rN7MxOklwSfEMwLm89yYoiTzEp02LJ83Q4SWaEFUVaZJyf_s4MnycL7w84FiWU42KWfD1IFcAZeURxMB8mDMhYtB8q19ZgIRiFNDjXNtLW0oIHpFzvA9JxhcIe0NpWRlq0VSDtHZJItc3OWKhQDa3aQ2OUPF4j-OyiSgM2jEq2Qt3gWg_vPVhlbI186KvhIjnT8uhh8dPnydvT4-vqJd1sn9er-00qKeUhLTkmTCpN8jzDwJiuxn8qnjOiKlUqzgjnNF8S0BR2nGOqSi0x14XKONWUzpOr6W7n2ujAB3Foe2ejpCCsJJyUjGURRSaUik69Ay26-IF0gyBYjLmLKXcRcxdj7mKInGzi-Ii1Nbg_l_8lfQNrm4iw</recordid><startdate>20170301</startdate><enddate>20170301</enddate><creator>Sujith, P. 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P. ; Gonsalves, Maria Judith B. D. ; Bhonsle, Sneha ; Shaikh, Shagufta ; LokaBharathi, P. 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P.</creatorcontrib><creatorcontrib>Gonsalves, Maria Judith B. D.</creatorcontrib><creatorcontrib>Bhonsle, Sneha</creatorcontrib><creatorcontrib>Shaikh, Shagufta</creatorcontrib><creatorcontrib>LokaBharathi, P. 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P.</au><au>Gonsalves, Maria Judith B. D.</au><au>Bhonsle, Sneha</au><au>Shaikh, Shagufta</au><au>LokaBharathi, P. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Bacterial activity in hydrogenetic ferromanganese crust from the Indian Ocean: a combined geochemical, experimental and pyrosequencing study</atitle><jtitle>Environmental earth sciences</jtitle><stitle>Environ Earth Sci</stitle><date>2017-03-01</date><risdate>2017</risdate><volume>76</volume><issue>5</issue><spage>1</spage><pages>1-</pages><artnum>191</artnum><issn>1866-6280</issn><eissn>1866-6299</eissn><abstract>The Afanasiy-Nikitin Seamount (ANS) in the Equatorial Indian Ocean harbors hydrogenetic ferromanganese (Fe–Mn) crusts. It was hypothesized that the bacteria associated with the crust catalyze the precipitation of metal hydroxides in seawater more than abiotic dissolution, contributing to hydrogenetic accretion on the seamount. To test this hypothesis, Fe–Mn crust samples were collected from the flanks of the ANS. Geochemical properties of water samples collected were analyzed, and simulatory laboratory experiments were conducted to quantify bacterial accretion rates. Pyrosequencing was used to delineate the community associated with the crust. The environmental parameters of the water column indicated significant differences (
p
< 0.001) between a seamount and a non-seamount site. Experiments on Fe–Mn crust under near in situ temperature (4 ± 2 °C) and pressure (20 MPa) conditions showed significantly (
p
< 0.001) higher biotic immobilization than abiotic immobilization for Fe and Co. The sequence of immobilization was Fe (9.34) > Mn (0.63) > Ni (0.003) > Co (0.002 mg g
−1
) with added glucose (0.01%) and Fe (9.09) > Mn (0.87) > Ni (0.0043) > Co (0.0008 mg g
−1
) without added glucose. Unlike the hydrothermal vent sites of the Pacific where ε- and ζ-
Proteobacteria
were reported to be dominant, the hydrogenetic Fe–Mn crusts of the ANS revealed sequences related to known Fe-, Mn- and S-oxidizing bacteria of the γ- and α-
Proteobacterial
groups. Thus, the different selective pressures in the two environments could be one of the factors that have brought about a difference in their bacterial diversity. Besides, the ambient nutrient levels could have triggered the participation of the
Proteobacterial
community of the ANS in the precipitation of Fe–Mn rich minerals.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s12665-017-6495-y</doi></addata></record> |
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| subjects | Accretion Bacteria Biogeosciences Chemical analysis Community involvement Earth and Environmental Science Earth Sciences Environmental Science and Engineering Geochemistry Geology Harbors Hydrology/Water Resources Hydroxides Iron Lithosphere Manganese compounds Oceanic analysis Original Article Seamounts Seawater Terrestrial Pollution Water analysis Water column Water sampling |
| title | Bacterial activity in hydrogenetic ferromanganese crust from the Indian Ocean: a combined geochemical, experimental and pyrosequencing study |
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