Siderophore‐promoted dissolution of smectite by fluorescent Pseudomonas

Environmental Microbiology Reports - Tập 6 Số 5 - Trang 459-467 - 2014
Claire Ferret1, Thibault Sterckeman2, Jean-Yves Cornu3,4, Sophie Gangloff5, Isabelle Schalk1, Valérie Geoffroy1
1Université de Strasbourg > > > > > >
2Laboratoire Sols et Environnement
3Interactions Sol Plante Atmosphère
4Université de Haute-Alsace (UHA) Mulhouse - Colmar
5Laboratoire d'Hydrologie et de Géochimie de Strasbourg

Tóm tắt

SummarySiderophores are organic chelators produced by microorganisms to fulfil their iron requirements. Siderophore‐promoted dissolution of iron‐bearing minerals has been clearly documented for some siderophores, but few studies have addressed metabolizing siderophore‐producing bacteria. We investigated iron acquisition from clays by fluorescent Pseudomonads, bacteria that are ubiquitous in the environment. We focused on the interactions between smectite and Pseudomonas aeruginosa, a bacterium producing two structurally different siderophores: pyoverdine and pyochelin. The presence of smectite in iron‐limited growth media promoted planktonic growth of P. aeruginosa and biofilm surrounding the smectite aggregates. Chemical analysis of the culture media indicated increases in the dissolved silicon, iron and aluminium concentrations following smectite supplementation. The use of P. aeruginosa mutants unable to produce either one or both of the two siderophores indicated that pyoverdine, the siderophore with the higher affinity for iron, was involved in iron and aluminium solubilization by the wild‐type strain. However, in the absence of pyoverdine, pyochelin was also able to solubilize iron but with a twofold lower efficiency. In conclusion, pyoverdine and pyochelin, two structurally different siderophores, can solubilize structural iron from smectite and thereby make it available for bacterial growth.

Từ khóa


Tài liệu tham khảo

10.1021/ic00104a059

10.1346/CCMN.2009.0570207

10.1016/S0009-2541(02)00077-3

10.1016/j.scitotenv.2008.01.017

10.1099/00221287-146-10-2425

10.1023/A:1020218608266

10.1016/j.tim.2004.11.006

10.1039/c1dt11804h

10.1128/JB.00010-09

10.1111/j.1462-2920.2008.01838.x

10.1111/j.1758-2229.2009.00126.x

10.1016/j.cbpa.2011.01.005

Brigatti M.F., 2006, Handbook of Clay Science, Vol. I, Developments in Clay Science, 1

10.1021/es010901n

10.2136/sssaj1994.03615995005800020021x

10.1007/s10534-008-9193-0

10.1073/pnas.78.7.4256

10.1128/AEM.02349-09

Devineau K. Montarges‐Pelletier E. Villieras F. Maddi S. Woimbée J.C.L. Pelletier M. et al. (2004)Compréhension du comportement à long terme d'une barrière ouvragée en argile pour le stockage de déchets radioactifs en formation géologique profonde. Rapport CRP. 1ENG.04.2 Contrat ANDRA 024386‐CM/CC.

10.1021/ic9512183

10.1021/ic00310a035

10.1021/bi0259711

10.1128/JB.186.14.4457-4465.2004

10.1128/JB.00784-08

10.1016/j.gca.2008.03.027

10.1111/j.1365-2958.2005.05008.x

10.1111/j.1462-2920.2011.02674.x

10.1007/s10534-011-9513-7

10.1016/S0043-1354(98)00293-0

10.1016/0016-7037(95)00221-K

10.1016/S0009-2541(96)00038-1

10.1080/01490450050192965

10.1039/b906679a

10.1016/S0016-7037(96)00278-5

10.1007/BF00140108

10.1016/S0009-2541(00)00214-X

10.1007/s00027-003-0690-5

10.1016/S0016-7037(99)00227-6

10.1007/s10534-009-9222-7

10.1016/S0016-7037(99)00288-4

10.1046/j.1365-2958.2003.03525.x

10.1016/S0009-2541(01)00307-2

10.1080/01490450151079752

10.1099/00221287-107-2-319

10.1023/A:1005296312509

10.1016/j.chemgeo.2009.03.012

Perrin D.D., 1979, Stability constants of metal‐ion complexes. Part B Organic Ligands

10.2741/1051

10.1038/287833a0

10.1016/j.gca.2006.12.022

10.1016/S0016-7037(02)01082-7

10.1016/j.mib.2007.09.010

10.1016/j.jinorgbio.2007.11.017

10.1111/1462-2920.12013

10.1111/j.1462-2920.2011.02556.x

10.2136/sssaj2004.4700

Stucki J.W., 2006, Handbook of Clay Science, Vol. I, Developments in Clay Science, 423

10.1099/00221287-147-1-3

10.1007/s00775-006-0088-7

10.1128/AEM.59.10.3280-3286.1993

10.1007/978-1-4419-9084-6_3

10.1128/AEM.58.9.2886-2893.1992

10.1046/j.1365-2958.2002.03088.x

Watteau F., 1994, Microbial dissolution of iron and aluminum from soil minerals – efficiency and specificity of hydroxamate siderophores compared to aliphatic‐acids, Eur J Soil Biol, 30, 1

10.1021/es8037214

10.1038/ngeo589

Thông tin
Thông tin xuất bản

Environmental Microbiology Reports

Tập 6 Số 5

459-467

Thông tin tác giả