Oxygen minimum zone cryptic sulfur cycling sustained by offshore transport of key sulfur oxidizing bacteria

被引：101

作者：

Callbeck, Cameron M. ^{[1
,4
]}

Lavik, Gaute ^{[1
]}

Ferdelman, Timothy G. ^{[1
]}

Fuchs, Bernhard ^{[1
]}

Gruber-Vodicka, Harald R. ^{[1
]}

Hach, Philipp F. ^{[1
]}

Littmann, Sten ^{[1
]}

Schoffelen, Niels J. ^{[1
]}

Kalvelage, Tim ^{[1
]}

Thomsen, Soeren ^{[2
]}

Schunck, Harald ^{[3
]}

Loescher, Carolin R. ^{[3
,5
]}

Schmitz, Ruth A. ^{[3
]}

Kuypers, Marcel M. M. ^{[1
]}

机构：

[1] Max Planck Inst Marine Microbiol, D-28359 Bremen, Germany

[2] GEOMAR Helmholtz Ctr Ocean Res, D-24148 Kiel, Germany

[3] Univ Kiel, Inst Gen Microbiol, D-24418 Kiel, Germany

[4] Swiss Fed Inst Aquat Sci & Technol Eawag, CH-6047 Kastanienbaum, Switzerland

[5] Univ Southern Denmark, Nordcee & Danish Inst Adv Study, Dept Biol, DK-5230 Odense, Denmark

来源：

NATURE COMMUNICATIONS | 2018年 / 9卷

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

SULFIDE OXIDATION; HYDROGEN-SULFIDE; SOUTH-PACIFIC; IDENTIFICATION; NITROGEN; WATERS; DENITRIFICATION; EDDIES; GENOME; OCEAN;

D O I：

10.1038/s41467-018-04041-x

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Members of the gammaproteobacterial clade SUP05 couple water column sulfide oxidation to nitrate reduction in sulfidic oxygen minimum zones (OMZs). Their abundance in offshore OMZ waters devoid of detectable sulfide has led to the suggestion that local sulfate reduction fuels SUP05-mediated sulfide oxidation in a so-called "cryptic sulfur cycle". We examined the distribution and metabolic capacity of SUP05 in Peru Upwelling waters, using a combination of oceanographic, molecular, biogeochemical and single-cell techniques. A single SUP05 species, (U)Thioglobus perditus, was found to be abundant and active in both sulfidic shelf and sulfide-free offshore OMZ waters. Our combined data indicated that mesoscale eddy-driven transport led to the dispersal of T-U. perditus and elemental sulfur from the sulfidic shelf waters into the offshore OMZ region. This offshore transport of shelf waters provides an alternative explanation for the abundance and activity of sulfide-oxidizing denitrifying bacteria in sulfide-poor offshore OMZ waters.

引用

页数：11

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