Evidence map›Paper›PMID 40317988›Full record

ArticleEnvironmental microbiology reports2025

Microbial Responses to Micronutrient Amendments in Oxygenated and Deoxygenated Waters of the Arabian Sea.

Mandar Bandekar, Rakhee Khandeparker, Kuldeep D More, Seyieleno C Seleyi, Mukund Gauthankar, Ujwala Amberkar, Jukka Kekäläinen, Jarkko Akkanen

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Article in Environmental microbiology reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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No citing paper in PubMed yet.

4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Mandar BandekarDepartment of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland.ORCID https://orcid.org/0000-0003-0880-4911
Rakhee KhandeparkerBiological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, India.
Kuldeep D MoreDepartment of Biological Sciences, State University of New York at Buffalo, Amherst, New York, USA.
Seyieleno C SeleyiMarine Biotechnology Division, National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai, India.
Mukund GauthankarBiological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, India.
Ujwala AmberkarBiological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, India.
Jukka KekäläinenDepartment of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland.
Jarkko AkkanenDepartment of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland.

Funding

Council of Scientific and Industrial Research, India CSIR project OLP2005CSIR-Senior Research FellowshipDepartment of Science and Technology (GAP 3358)INSPIRE faculty fellowshipJenny and Antti Wihuri FoundationNational Institute of Ocean Technology under the Deep Ocean Mission program (N442)Olvi FoundationSaastamoinen Foundation CSIR project NWP0100Saastamoinen Foundation RF84178University of Eastern FinlandUniversity of Eastern Finland Water Research Program
6 · The paper itself

Abstract

Metalloenzyme cofactors and oxygen conditions are crucial for microbial metabolism, yet their combined effects on microbial ecosystems remain unexplored. This study explores the impact of micronutrient amendments (Zn, Fe, Co and their combinations) on the microbial community composition in oxygenated (73 m) and deoxygenated (200 m) waters of the Arabian Sea. Through controlled microcosm experiment and 16S rRNA amplicon sequencing, we observed that micronutrients significantly alter nutrient concentrations and microbial dynamics. At 73 m, micronutrient treatments reduced nitrate, nitrite and ammonia levels, whereas at 200 m, they increased nitrate and silicate levels. Total bacterial counts (TBCs) were higher in all treatments at both depths, with Fe showing the highest counts. Alpha diversity indicated that Fe-amended flask increased microbial diversity the most at 73 m, while mixed treatments had a pronounced effect at 200 m. Taxonomic analysis revealed significant genus-level variations in both bacteria and archaea. One-way analysis of variance (ANOVA) confirmed micronutrient impacts on nutrients and TBC. Canonical correspondence analysis (CCA) and non-metric multidimensional scaling (NMDS) revealed distinct clustering based on oxygen conditions. These results confirm our hypothesis that micronutrient amendments in varying oxygen levels distinctly alter microbial community composition and nutrient cycling in marine environments.

Indexed as

ArchaeaBacteriaMicrobiotaMicronutrientsOxygenSeawaterAmmoniaNitratesNitritesRNA, Ribosomal, 16SAmmoniaMicronutrientsNitratesNitritesOxygenRNA, Ribosomal, 16SArabian Seamicrobial communitiesmicrocosm experimentmicronutrientsoxygen minimum zone

Identifiers

PMID40317988
PMCPMC12046384

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.