Microarray analysis of a microbe–mineral interaction

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Microarray analysis of a microbe–mineral interaction. / Olsson-Francis, Karen; Van Houdt, Rob; Mergeay, Max; Leys, Natalie; Cockell, Charles S.; Moors, Hugo (Peer reviewer).

In: Geobiology, Vol. 8, No. 5, 12.2010, p. 446-456.

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Olsson-Francis, Karen ; Van Houdt, Rob ; Mergeay, Max ; Leys, Natalie ; Cockell, Charles S. ; Moors, Hugo. / Microarray analysis of a microbe–mineral interaction. In: Geobiology. 2010 ; Vol. 8, No. 5. pp. 446-456.

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@article{6a915e4630cd4cd095ee25061f823601,
title = "Microarray analysis of a microbe–mineral interaction",
abstract = "The weathering of volcanic minerals makes a significant contribution to the global silicate weathering budget, influencing carbon dioxide drawdown and long-term climate control. Micro-organisms are known to play a role in rock weathering yet the genomics of biological rock weathering are unknown. We apply DNA microarray technology to determine putative genes involved in weathering using Cupriavidus metallidurans CH34, in particular we investigate the sequestering of iron. The results show that the bacterium does not depend on siderophores. Instead, the up-regulation of porins and transporters which are employed concomitantly with genes associated with biofilm formation suggests that novel passive and active iron uptake systems are involved. We hypothesize that these mechanisms induce rock weathering by changes in chemical equilibrium at the microbe–mineral interface, reducing the saturation state of iron. We also demonstrate that low concentrations of metals in the basalt induce heavy metal-resistant genes. Some of the earliest environments on the Earth were volcanic. Therefore, these results not only elucidate the mechanisms by which micro-organisms might have sequestered nutrients on the early Earth but also provide an explanation for the evolution of multiple heavy metal resistance genes long before the creation of contaminated industrial biotopes by human activity.",
keywords = "rock, basalt, CH34, microarray, iron",
author = "Karen Olsson-Francis and {Van Houdt}, Rob and Max Mergeay and Natalie Leys and Cockell, {Charles S.} and Hugo Moors",
note = "Score = 10",
year = "2010",
month = dec,
doi = "10.1111/j.1472-4669.2010.00253.x",
language = "English",
volume = "8",
pages = "446--456",
journal = "Geobiology",
issn = "1472-4677",
publisher = "Wiley - John Wiley & Sons, Ltd",
number = "5",

}

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TY - JOUR

T1 - Microarray analysis of a microbe–mineral interaction

AU - Olsson-Francis, Karen

AU - Van Houdt, Rob

AU - Mergeay, Max

AU - Leys, Natalie

AU - Cockell, Charles S.

A2 - Moors, Hugo

N1 - Score = 10

PY - 2010/12

Y1 - 2010/12

N2 - The weathering of volcanic minerals makes a significant contribution to the global silicate weathering budget, influencing carbon dioxide drawdown and long-term climate control. Micro-organisms are known to play a role in rock weathering yet the genomics of biological rock weathering are unknown. We apply DNA microarray technology to determine putative genes involved in weathering using Cupriavidus metallidurans CH34, in particular we investigate the sequestering of iron. The results show that the bacterium does not depend on siderophores. Instead, the up-regulation of porins and transporters which are employed concomitantly with genes associated with biofilm formation suggests that novel passive and active iron uptake systems are involved. We hypothesize that these mechanisms induce rock weathering by changes in chemical equilibrium at the microbe–mineral interface, reducing the saturation state of iron. We also demonstrate that low concentrations of metals in the basalt induce heavy metal-resistant genes. Some of the earliest environments on the Earth were volcanic. Therefore, these results not only elucidate the mechanisms by which micro-organisms might have sequestered nutrients on the early Earth but also provide an explanation for the evolution of multiple heavy metal resistance genes long before the creation of contaminated industrial biotopes by human activity.

AB - The weathering of volcanic minerals makes a significant contribution to the global silicate weathering budget, influencing carbon dioxide drawdown and long-term climate control. Micro-organisms are known to play a role in rock weathering yet the genomics of biological rock weathering are unknown. We apply DNA microarray technology to determine putative genes involved in weathering using Cupriavidus metallidurans CH34, in particular we investigate the sequestering of iron. The results show that the bacterium does not depend on siderophores. Instead, the up-regulation of porins and transporters which are employed concomitantly with genes associated with biofilm formation suggests that novel passive and active iron uptake systems are involved. We hypothesize that these mechanisms induce rock weathering by changes in chemical equilibrium at the microbe–mineral interface, reducing the saturation state of iron. We also demonstrate that low concentrations of metals in the basalt induce heavy metal-resistant genes. Some of the earliest environments on the Earth were volcanic. Therefore, these results not only elucidate the mechanisms by which micro-organisms might have sequestered nutrients on the early Earth but also provide an explanation for the evolution of multiple heavy metal resistance genes long before the creation of contaminated industrial biotopes by human activity.

KW - rock

KW - basalt

KW - CH34

KW - microarray

KW - iron

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_109066

UR - http://knowledgecentre.sckcen.be/so2/bibref/7319

U2 - 10.1111/j.1472-4669.2010.00253.x

DO - 10.1111/j.1472-4669.2010.00253.x

M3 - Article

VL - 8

SP - 446

EP - 456

JO - Geobiology

JF - Geobiology

SN - 1472-4677

IS - 5

ER -

ID: 215097