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Carrasco, L.* ; Gattinger, A. ; Fliessbach, A.* ; Roldan, A.* ; Schloter, M. ; Caravaca, F.*

Estimation by PLFA of microbial community structure associated with the rhizosphere of Lygeum spartum and Piptatherum miliaceum growing in semiarid mine tailings.

Microb. Ecol. 60, 265-271 (2010)
DOI PMC
Open Access Gold as soon as Publ. Version/Full Text is submitted to ZB.
The objective of this study was to compare the microbial community composition and biomass associated with the rhizosphere of a perennial gramineous species (Lygeum spartum L.) with that of an annual (Piptatherum miliaceum L.), both growing in semiarid mine tailings. We also established their relationship with the contents of potentially toxic metals as well as with indicators of soil quality. The total phospholipid fatty acid (PLFA) amount was significantly higher in the rhizosphere soil of the annual species than in the rhizosphere soil of the perennial species. The fungal/bacterial PLFA ratio was significantly greater in the perennial species compared to the annual species. The fatty acid 16:1ω5c, the fungal/bacterial PLFA ratio and monounsaturated/saturated PLFA ratio were correlated negatively with the soluble contents of toxic metals. The cyc/prec (cy17:0 + cy19:0/16:1ω7 + 18:1ω7) ratio was correlated positively with the soluble contents of Pb, Zn, Al, Ni, Cd, and Cu. The results of the PLFA analysis for profiling microbial communities and their stress status of both the plant species indicate that perennial and annual gramineous species appear equally suitable for use in programmes of revegetation of semiarid mine tailings.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Arbuscular mycorrhizal fungi; Heavy-metals, Fatty-acids; Soil; Glomalin; Biomass; Roots; Contamination; Remediation; Tolerance
Language english
Publication Year 2010
HGF-reported in Year 2010
ISSN (print) / ISBN 0095-3628
e-ISSN 1432-184X
Quellenangaben Volume: 60, Issue: 2, Pages: 265-271 Article Number: , Supplement: ,
Publisher Springer
Reviewing status Peer reviewed
PSP Element(s) G-504490-001
PubMed ID 20016981
Scopus ID 77956876244
Erfassungsdatum 2010-11-16