Microbial Mineral Weathering for Nutrient Acquisition Releases Arsenic

被引：81

作者：

Mailloux, Brian J. ^{[1
]}

Alexandrova, Ekaterina ^{[1
]}

Keimowitz, Alison R. ^{[2
]}

Wovkulich, Karen ^{[3
]}

Freyer, Greg A. ^{[4
]}

Herron, Michael ^{[2
]}

Stolz, John F. ^{[5
]}

Kenna, Timothy C. ^{[2
]}

Pichler, Thomas ^{[6
]}

Polizzotto, Matthew L. ^{[7
]}

Dong, Hailiang ^{[8
]}

Bishop, Michael ^{[8
]}

Knappett, Peter S. K. ^{[9
]}

机构：

[1] Barnard Coll, Dept Environm Sci, New York, NY 10027 USA

[2] Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA

[3] Columbia Univ, Dept Earth & Environm Sci, New York, NY 10027 USA

[4] Columbia Univ, New York, NY 10032 USA

[5] Duquesne Univ, Dept Biol Sci, Pittsburgh, PA 15282 USA

[6] Univ S Florida, Dept Geol, Tampa, FL 33620 USA

[7] Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA

[8] Miami Univ, Dept Geol, Oxford, OH 45056 USA

[9] Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA

来源：

APPLIED AND ENVIRONMENTAL MICROBIOLOGY | 2009年 / 75卷 / 08期

关键词：

PHOSPHATE-SOLUBILIZING GENE; BANGLADESH GROUNDWATER; REDUCING CONDITIONS; ELEMENTAL RELEASE; FE RELEASE; AQUIFER; WATER; MOBILIZATION; SEDIMENTS; BACTERIA;

D O I：

10.1128/AEM.02440-07

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Tens of millions of people in Southeast Asia drink groundwater contaminated with naturally occurring arsenic. How arsenic is released from the sediment into the water remains poorly understood. Here, we show in laboratory experiments that phosphate-limited cells of Burkholderia fungorum mobilize ancillary arsenic from apatite. We hypothesize that arsenic mobilization is a by-product of mineral weathering for nutrient acquisition. The released arsenic does not undergo a redox transformation but appears to be solubilized from the apatite mineral lattice during weathering. Analysis of apatite from the source area in the Himalayan basin indicates the presence of elevated levels of arsenic, with an average concentration of 210 mg/kg. The rate of arsenic release is independent of the initial dissolved arsenic concentration and occurs at phosphate levels observed in Bangladesh aquifers. We also demonstrate the presence of the microbial phenotype that releases arsenic from apatite in Bangladesh aquifer sediments and groundwater. These results suggest that microbial mineral weathering for nutrient acquisition could be an important mechanism for arsenic mobilization.

引用

页码：2558 / 2565

页数：8

共 51 条

[11]

GOLDSTEIN AH, 1993, BIO-TECHNOL, V11, P1250

[12]

Gottschalk G., 1986, Bacterial Metabolism, V2nd ed.

[13] Spatial and temporal association of As and Fe species on aquatic plant roots [J].

Hansel, CM ;

La Force, MJ ;

Fendorf, S ;

Sutton, S .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2002, 36 (09) :1988-1994

[14] Arsenic mobility and groundwater extraction in Bangladesh [J].

Harvey, CF ;

Swartz, CH ;

Badruzzaman, ABM ;

Keon-Blute, N ;

Yu, W ;

Ali, MA ;

Jay, J ;

Beckie, R ;

Niedan, V ;

Brabander, D ;

Oates, PM ;

Ashfaque, KN ;

Islam, S ;

Hemond, HF ;

Ahmed, MF .

SCIENCE, 2002, 298 (5598) :1602-1606

[15] Multistate evaluation of an ultrafiltration-based procedure for simultaneous recovery of enteric microbes in 100-liter tap water samples [J].

Hill, Vincent R. ;

Kahler, Amy M. ;

Jothikumar, Narayanan ;

Johnson, Trisha B. ;

Hahn, Donghyun ;

Cromeans, Theresa L. .

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 2007, 73 (13) :4218-4225

[16] SOME SPECIAL PROBLEMS IN THE DETERMINATION OF VIABLE COUNTS OF GROUNDWATER MICROORGANISMS [J].

HIRSCH, P ;

RADESROHKOHL, E .

MICROBIAL ECOLOGY, 1988, 16 (01) :99-113

[17] Decoupling of As and Fe release to Bangladesh groundwater under reducing conditions. Part 1: Evidence from sediment profiles [J].

Horneman, A ;

Van Geen, A ;

Kent, DV ;

Mathe, PE ;

Zheng, Y ;

Dhar, RK ;

O'Connell, S ;

Hoque, MA ;

Aziz, Z ;

Shamsudduha, M ;

Seddique, AA ;

Ahmed, KM .

GEOCHIMICA ET COSMOCHIMICA ACTA, 2004, 68 (17) :3459-3473

[18] Climate change and Late Pliocene acceleration of erosion in the Himalaya [J].

Huntington, Katharine W. ;

Blythe, Ann E. ;

Hodges, Kip V. .

EARTH AND PLANETARY SCIENCE LETTERS, 2006, 252 (1-2) :107-118

[19] Potential role of the Fe(III)-reducing bacteria Geobacter and Geothrix in controlling arsenic solubility in Bengal delta sediments [J].

Islam, FS ;

Boothman, C ;

Gault, AG ;

Polya, DA ;

Lloyd, JR .

MINERALOGICAL MAGAZINE, 2005, 69 (05) :865-875

[20] Role of metal-reducing bacteria in arsenic release from Bengal delta sediments [J].

Islam, FS ;

Gault, AG ;

Boothman, C ;

Polya, DA ;

Charnock, JM ;

Chatterjee, D ;

Lloyd, JR .

NATURE, 2004, 430 (6995) :68-71

← 1 2 3 4 5 6 →