Phytoremediation of Metal Contaminated Soil Using Willow: Exploiting Plant-Associated Bacteria to Improve Biomass Production and Metal Uptake.
Identifieur interne : 001B96 ( Main/Exploration ); précédent : 001B95; suivant : 001B97Phytoremediation of Metal Contaminated Soil Using Willow: Exploiting Plant-Associated Bacteria to Improve Biomass Production and Metal Uptake.
Auteurs : Jolien Janssen [Belgique] ; Nele Weyens ; Sarah Croes ; Bram Beckers ; Linda Meiresonne ; Pierre Van Peteghem ; Robert Carleer ; Jaco VangronsveldSource :
- International journal of phytoremediation [ 1549-7879 ] ; 2015.
Descripteurs français
- KwdFr :
- MESH :
- génétique : Salix.
- microbiologie : Salix.
- métabolisme : Bactéries, Métaux, Polluants du sol, Salix.
- Belgique, Biomasse, Dépollution biologique de l'environnement, Spécificité d'espèce.
- Wicri :
- geographic : Belgique.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Metals, Soil Pollutants.
- geographic : Belgium.
- genetics : Salix.
- metabolism : Bacteria, Salix.
- microbiology : Salix.
- Biodegradation, Environmental, Biomass, Species Specificity.
Abstract
Short rotation coppice (SRC) of willow and poplar is proposed for economic valorization and concurrently as remediation strategy for metal contaminated land in northeast-Belgium. However, metal phytoextraction appears insufficient to effectuate rapid reduction of soil metal contents. To increase both biomass production and metal accumulation of SRC, two strategies are proposed: (i) in situ selection of the best performing clones and (ii) bioaugmentation of these clones with beneficial plant-associated bacteria. Based on field data, two experimental willow clones, a Salix viminalis and a Salix alba x alba clone, were selected. Compared to the best performing commercial clones, considerable increases in stem metal extraction were achieved (up to 74% for Cd and 91% for Zn). From the selected clones, plant-associated bacteria were isolated and identified. All strains were subsequently screened for their plant growth-promoting and metal uptake enhancing traits. Five strains were selected for a greenhouse inoculation experiment with the selected clones planted in Cd-Zn-Pb contaminated soil. Extraction potential tended to increase after inoculation of S. viminalis plants with a Rahnella sp. strain due to a significantly increased twig biomass. However, although bacterial strains showing beneficial traits in vitro were used for inoculation, increments in extraction potential were not always observed.
DOI: 10.1080/15226514.2015.1045129
PubMed: 25942689
Affiliations:
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However, metal phytoextraction appears insufficient to effectuate rapid reduction of soil metal contents. To increase both biomass production and metal accumulation of SRC, two strategies are proposed: (i) in situ selection of the best performing clones and (ii) bioaugmentation of these clones with beneficial plant-associated bacteria. Based on field data, two experimental willow clones, a Salix viminalis and a Salix alba x alba clone, were selected. Compared to the best performing commercial clones, considerable increases in stem metal extraction were achieved (up to 74% for Cd and 91% for Zn). From the selected clones, plant-associated bacteria were isolated and identified. All strains were subsequently screened for their plant growth-promoting and metal uptake enhancing traits. Five strains were selected for a greenhouse inoculation experiment with the selected clones planted in Cd-Zn-Pb contaminated soil. Extraction potential tended to increase after inoculation of S. viminalis plants with a Rahnella sp. strain due to a significantly increased twig biomass. However, although bacterial strains showing beneficial traits in vitro were used for inoculation, increments in extraction potential were not always observed. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">25942689</PMID><DateCompleted><Year>2016</Year><Month>08</Month><Day>16</Day></DateCompleted><DateRevised><Year>2015</Year><Month>08</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1549-7879</ISSN><JournalIssue CitedMedium="Internet"><Volume>17</Volume><Issue>11</Issue><PubDate><Year>2015</Year></PubDate></JournalIssue><Title>International journal of phytoremediation</Title><ISOAbbreviation>Int J Phytoremediation</ISOAbbreviation></Journal><ArticleTitle>Phytoremediation of Metal Contaminated Soil Using Willow: Exploiting Plant-Associated Bacteria to Improve Biomass Production and Metal Uptake.</ArticleTitle><Pagination><MedlinePgn>1123-36</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1080/15226514.2015.1045129</ELocationID><Abstract><AbstractText>Short rotation coppice (SRC) of willow and poplar is proposed for economic valorization and concurrently as remediation strategy for metal contaminated land in northeast-Belgium. However, metal phytoextraction appears insufficient to effectuate rapid reduction of soil metal contents. To increase both biomass production and metal accumulation of SRC, two strategies are proposed: (i) in situ selection of the best performing clones and (ii) bioaugmentation of these clones with beneficial plant-associated bacteria. Based on field data, two experimental willow clones, a Salix viminalis and a Salix alba x alba clone, were selected. Compared to the best performing commercial clones, considerable increases in stem metal extraction were achieved (up to 74% for Cd and 91% for Zn). From the selected clones, plant-associated bacteria were isolated and identified. All strains were subsequently screened for their plant growth-promoting and metal uptake enhancing traits. Five strains were selected for a greenhouse inoculation experiment with the selected clones planted in Cd-Zn-Pb contaminated soil. Extraction potential tended to increase after inoculation of S. viminalis plants with a Rahnella sp. strain due to a significantly increased twig biomass. 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first="Pierre" last="Van Peteghem">Pierre Van Peteghem</name><name sortKey="Vangronsveld, Jaco" sort="Vangronsveld, Jaco" uniqKey="Vangronsveld J" first="Jaco" last="Vangronsveld">Jaco Vangronsveld</name><name sortKey="Weyens, Nele" sort="Weyens, Nele" uniqKey="Weyens N" first="Nele" last="Weyens">Nele Weyens</name></noCountry><country name="Belgique"><noRegion><name sortKey="Janssen, Jolien" sort="Janssen, Jolien" uniqKey="Janssen J" first="Jolien" last="Janssen">Jolien Janssen</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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