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Title: | Bacterial communities associated with Brassica napusL. grown on trace element-contaminated and non-contaminated fields: a genotypic and phenotypic comparison | Authors: | CROES, Sarah WEYENS, Nele JANSSEN, Jolien VERCAMPT, Hanne COLPAERT, Jan CARLEER, Robert VANGRONSVELD, Jaco |
Issue Date: | 2013 | Publisher: | WILEY-BLACKWELL | Source: | MICROBIAL BIOTECHNOLOGY, 6 (4), p. 371-384 | Abstract: | Cultivable bacterial strains associated with field-grown Brassica napusL. (soil, rhizosphere and roots) from a trace elements (Cd, Zn and Pb) contaminated field and a non-contaminated control field were characterized genotypically and phenotypically. Correspondence analysis of the genotypic data revealed a correlation between soil and rhizosphere communities isolated from the same field, indicating that local conditions play a more important role in influencing the composition of (rhizosphere) soil bacterial communities than root exudates. In contrast, endophytic communities of roots showed a correlation between fields, suggesting that plants on the two fields contain similar obligate endophytes derived from a common seed endophytic community and/or can select bacteria from the rhizosphere. The latter seemed not very likely since, despite the presence of several potential endophytic taxa in the rhizosphere, no significant correlation was found between root and rhizosphere communities. The majority of Cd/Zn tolerant strains capable of phosphorus solubilization, nitrogen fixation, indole-3-acetic acid production and showing 1-aminocyclopropane-1-carboxylate deaminase capacity were found in the rhizosphere and roots of plants growing on the contaminated field. | Notes: | Vangronsveld, J (reprint author), Hasselt Univ, Ctr Environm Sci, B-3590 Diepenbeek, Belgium. jaco.vangronsveld@uhasselt.be | Keywords: | Biotechnology & Applied Microbiology; Microbiology | Document URI: | http://hdl.handle.net/1942/15393 | ISSN: | 1751-7907 | DOI: | 10.1111/1751-7915.12057 | ISI #: | 000320187000007 | Rights: | © 2013 The Authors. Microbial Biotechnology published by John Wiley & Sons Ltd and Society for Applied Microbiology. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2014 |
Appears in Collections: | Research publications |
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Croes_et_al-2013-Microbial_Biotechnology.pdf | Published version | 1.31 MB | Adobe PDF | View/Open |
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