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Contrasting transcriptomic responses of a microbial eukaryotic community to oil and dispersant
Nanjappa, Deepak1,5; Liang, Yue1,6,7; Bretherton, Laura1; Brown, Chris2; Quigg, Antonietta3; Irwin, Andrew J.1,4; Finkel, Zoe, V1
Corresponding AuthorNanjappa, Deepak(
AbstractDispersants can aid dispersion and biodegradation of oil in seawater, but the wider ecotoxicological effects of oil and dispersant to the base of marine food webs is unclear. Here we apply a metatranscriptomic approach to identify molecular responses of a natural marine microbial eukaryotic community to oil and chemically dispersed oil. Oil exposure stimulated the upregulation of ketogenesis in the eukaryotic community, which may alleviate carbon-and energy-limitation and reduce oxidative stress. In contrast, a chemically dispersed oil treatment stimulated eukaryotic genes and pathways consistent with nitrogen and oxygen depletion. These results suggest that the addition of dispersant may elevate bacterial biodegradation of crude oil, indirectly increasing compe-tition for nitrogen between prokaryotic and eukaryotic communities as oxygen consumption induces bacterial anaerobic respiration and denitrification. Eukaryotic microbial communities may mitigate some of the negative effects of oil exposure such as reduced photosynthesis and elevated oxidative stress, through ketosis, but the addition of dispersant to the oil fundamentally alters the environmental and ecological conditions and therefore the biochemical response of the eukaryotic community.
KeywordMetatranscriptomes Oil spill Chemical dispersant Phytoplankton Protists Ketogenesis Metabolic stress
Indexed BySCI
Funding ProjectGulf of Mexico Research Initiative (GoMRI)
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000697049300001
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Document Type期刊论文
Corresponding AuthorNanjappa, Deepak
Affiliation1.Dalhousie Univ, Dept Oceanog, Halifax, NS, Canada
2.Mt Allison Univ, Environm Sci Program, Sackville, NB, Canada
3.Texas A&M Univ Galveston, Dept Marine Biol, Galveston, TX USA
4.Dalhousie Univ, Dept Math & Stat, Halifax, NS, Canada
5.SUNY Stony Brook, Sch Marine & Atmospher Sci, Southampton, NY USA
6.Chinese Acad Sci, Ctr Ocean Mega Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China
7.Pilot Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China
Recommended Citation
GB/T 7714
Nanjappa, Deepak,Liang, Yue,Bretherton, Laura,et al. Contrasting transcriptomic responses of a microbial eukaryotic community to oil and dispersant[J]. ENVIRONMENTAL POLLUTION,2021,288:8.
APA Nanjappa, Deepak.,Liang, Yue.,Bretherton, Laura.,Brown, Chris.,Quigg, Antonietta.,...&Finkel, Zoe, V.(2021).Contrasting transcriptomic responses of a microbial eukaryotic community to oil and dispersant.ENVIRONMENTAL POLLUTION,288,8.
MLA Nanjappa, Deepak,et al."Contrasting transcriptomic responses of a microbial eukaryotic community to oil and dispersant".ENVIRONMENTAL POLLUTION 288(2021):8.
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