气候变化领域集成服务门户(CCPortal): Microbial colonization of metal sulfide minerals at a diffuse-flow deep-sea hydrothermal vent at 9°50′N on the East Pacific Rise

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DOI	10.1111/gbi.12396
	Microbial colonization of metal sulfide minerals at a diffuse-flow deep-sea hydrothermal vent at 9°50′N on the East Pacific Rise
	Wang C.H.; Gulmann L.K.; Zhang T.; Farfan G.A.; Hansel C.M.; Sievert S.M.
发表日期	2020
ISSN	14724677
英文摘要	Metal sulfide minerals, including mercury sulfides (HgS), are widespread in hydrothermal vent systems where sulfur-oxidizing microbes are prevalent. Questions remain as to the impact of mineral composition and structure on sulfur-oxidizing microbial populations at deep-sea hydrothermal vents, including the possible role of microbial activity in remobilizing elemental Hg from HgS. In the present study, metal sulfides varying in metal composition, structure, and surface area were incubated for 13 days on and near a diffuse-flow hydrothermal vent at 9°50′N on the East Pacific Rise. Upon retrieval, incubated minerals were examined by scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), X-ray diffraction (XRD), and epifluorescence microscopy (EFM). DNA was extracted from mineral samples, and the 16S ribosomal RNA gene sequenced to characterize colonizing microbes. Sulfur-oxidizing genera common to newly exposed surfaces (Sulfurimonas, Sulfurovum, and Arcobacter) were present on all samples. Differences in their relative abundance between and within incubation sites point to constraining effects of the immediate environment and the minerals themselves. Greater variability in colonizing community composition on off-vent samples suggests that the bioavailability of mineral-derived sulfide (as influenced by surface area, crystal structure, and reactivity) exerted greater control on microbial colonization in the ambient environment than in the vent environment, where dissolved sulfide is more abundant. The availability of mineral-derived sulfide as an electron donor may thus be a key control on the activity and proliferation of deep-sea chemosynthetic communities, and this interpretation supports the potential for microbial dissolution of HgS at hydrothermal vents. © 2020 John Wiley & Sons Ltd
语种	英语
来源机构	Geobiology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133205
推荐引用方式 GB/T 7714	Wang C.H.,Gulmann L.K.,Zhang T.,等. Microbial colonization of metal sulfide minerals at a diffuse-flow deep-sea hydrothermal vent at 9°50′N on the East Pacific Rise[J]. Geobiology,2020.
APA	Wang C.H.,Gulmann L.K.,Zhang T.,Farfan G.A.,Hansel C.M.,&Sievert S.M..(2020).Microbial colonization of metal sulfide minerals at a diffuse-flow deep-sea hydrothermal vent at 9°50′N on the East Pacific Rise..
MLA	Wang C.H.,et al."Microbial colonization of metal sulfide minerals at a diffuse-flow deep-sea hydrothermal vent at 9°50′N on the East Pacific Rise".(2020).