Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/74786

TitleCork oak forests soil bacteria: potential for sustainable agroforest production
Author(s)Reis, Francisca Rodrigues
Pereira, Ana João
Tavares, R. M.
Baptista, Paula
Lino-Neto, T.
KeywordsPlant growth promoting bacteria
Cork oak
Antagonism
Biocontrol agent
Issue date16-Sep-2021
PublisherMultidisciplinary Digital Publishing Institute (MDPI)
JournalMicroorganisms
CitationReis, F.; Pereira, A.J.; Tavares, R.M.; Baptista, P.; Lino-Neto, T. Cork Oak Forests Soil Bacteria: Potential for Sustainable Agroforest Production. Microorganisms 2021, 9, 1973. https://doi.org/10.3390/microorganisms9091973
Abstract(s)Plant growth promoting rhizobacteria (PGPR) are in increasing demand due to their role in promoting sustainable practices, not only in agriculture but also in forestry. Keeping in mind the future application of PGPR for increasing cork oak sustainability, the aim of this study was to find cork oak PGPR isolates with increased nutrient solubilisation traits, able to promote root morphological changes and/or antagonize cork oak bark phytopathogens. Soils from three cork oak forests with distinct bioclimates (humid, semi-humid and semi-arid) were used for isolating bacteria. From the 7634 colony-forming units, 323 bacterial isolates were biochemically assayed for PGPR traits (siderophores production, phosphate solubilizing and organic acids production), and 51 were found to display all these traits. These PGPR were able to induce root morphological changes on <i>Arabidopsis thaliana</i>, like suppression of primary root growth, increase of lateral roots or root hairs formation. However, the most proficient PGPR displayed specific ability in changing a single root morphological trait. This ability was related not only to bacterial genotype, but also with the environment where bacteria thrived and isolation temperature. Bacteria from semi-arid environments (mainly <i>Bacillus megaterium</i> isolates) could hold a promising tool to enhance plant development. Other isolates (<i>Serratia quinivorens</i> or <i>B. cereus</i>) could be further explored for biocontrol purposes.
TypeArticle
URIhttps://hdl.handle.net/1822/74786
DOI10.3390/microorganisms9091973
ISSN2076-2607
Publisher versionhttps://www.mdpi.com/2076-2607/9/9/1973
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CBFP - Artigos/Papers

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