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Early rhizosphere microbiome composition is related to the growth and Zn uptake of willows introduced to a former landfill.
- Source :
-
Environmental microbiology [Environ Microbiol] 2015 Aug; Vol. 17 (8), pp. 3025-38. Date of Electronic Publication: 2015 Jun 19. - Publication Year :
- 2015
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Abstract
- Although plants introduced for site restoration are pre-selected for specific traits (e.g. trace element bioaccumulation, rapid growth in poor soils), the in situ success of these plants likely depends on the recruitment of appropriate rhizosphere microorganisms from their new environment. We introduced three willow (Salix spp.) cultivars to a contaminated landfill, and performed soil chemical analyses, plant measurements, and Ion Torrent sequencing of rhizospheric fungal and bacterial communities at 4 and 16 months post-planting. The abundance of certain dominant fungi was linked to willow accumulation of Zn, the most abundant trace element at the site. Interestingly, total Zn accumulation was better explained by fungal community structure 4 months post-planting than 16 months post-planting, suggesting that initial microbial recruitment may be critical. In addition, when the putative ectomycorrhizal fungi Sphaerosporella brunnea and Inocybe sp. dominated the rhizosphere 4 months post-planting, Zn accumulation efficiency was negatively correlated with fungal diversity. Although field studies such as this rely on correlation, these results suggest that the soil microbiome may have the greatest impact on plant function during the early stages of growth, and that plant-fungus specificity may be essential.<br /> (© 2015 Society for Applied Microbiology and John Wiley & Sons Ltd.)
- Subjects :
- Ascomycota classification
Ascomycota genetics
Bacteria classification
Bacteria genetics
Base Sequence
DNA, Bacterial genetics
DNA, Fungal genetics
Environmental Restoration and Remediation methods
Plant Roots microbiology
RNA, Ribosomal, 16S genetics
Salix metabolism
Sequence Analysis, DNA
Soil chemistry
Trace Elements metabolism
Microbiota
Mycorrhizae growth & development
Rhizosphere
Salix growth & development
Soil Microbiology
Soil Pollutants metabolism
Waste Disposal Facilities
Zinc metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1462-2920
- Volume :
- 17
- Issue :
- 8
- Database :
- MEDLINE
- Journal :
- Environmental microbiology
- Publication Type :
- Academic Journal
- Accession number :
- 25970820
- Full Text :
- https://doi.org/10.1111/1462-2920.12900