| Title: | Identification of Volatile Organic Compounds Emitted by Two Beneficial Endophytic Pseudomonas Strains from Olive Roots |
| Author(s): | Montes-Osuna N; Cernava T; Gomez-Lama Cabanas C; Berg G; Mercado-Blanco J; |
| Address: | "Departamento de Proteccion de Cultivos, Instituto de Agricultura Sostenible, Agencia Estatal Consejo Superior de Investigaciones Cientificas (CSIC), Avenida Menendez Pidal s/n, Campus 'Alameda del Obispo', 14004 Cordoba, Spain. Institute of Environmental Biotechnology, Graz University of Technology, Petersgasse 12/I, 8010 Graz, Austria. Leibniz-Institute for Agricultural Engineering Potsdam, Max-Eyth-Allee 100, 14469 Potsdam, Germany. Institute for Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24/25, 14476 Potsdam, Germany" |
| ISSN/ISBN: | 2223-7747 (Print) 2223-7747 (Electronic) 2223-7747 (Linking) |
| Abstract: | "The production of volatile organic compounds (VOCs) represents a promising strategy of plant-beneficial bacteria to control soil-borne phytopathogens. Pseudomonas sp. PICF6 and Pseudomonas simiae PICF7 are two indigenous inhabitants of olive roots displaying effective biological control against Verticillium dahliae. Additionally, strain PICF7 is able to promote the growth of barley and Arabidopsis thaliana, VOCs being involved in the growth of the latter species. In this study, the antagonistic capacity of these endophytic bacteria against relevant phytopathogens (Verticillium spp., Rhizoctonia solani, Sclerotinia sclerotiorum and Fusarium oxysporum f.sp. lycopersici) was assessed. Under in vitro conditions, PICF6 and PICF7 were only able to antagonize representative isolates of V. dahliae and V. longisporum. Remarkably, both strains produced an impressive portfolio of up to twenty VOCs, that included compounds with reported antifungal (e.g., 1-undecene, (methyldisulfanyl) methane and 1-decene) or plant growth promoting (e.g., tridecane, 1-decene) activities. Moreover, their volatilomes differed strongly in the absence and presence of V. dahliae. For example, when co incubated with the defoliating pathotype of V. dahliae, the antifungal compound 4-methyl-2,6-bis(2-methyl-2-propanyl)phenol was produced. Results suggest that volatiles emitted by these endophytes may differ in their modes of action, and that potential benefits for the host needs further investigation in planta" |
| Keywords: | Pseudomonas simiae PICF7 Pseudomonas sp.PICF6 Verticillium dahliae biological control agents olive rhizobacteria root endophytes volatilome; |
| Notes: | "PubMed-not-MEDLINEMontes-Osuna, Nuria Cernava, Tomislav Gomez-Lama Cabanas, Carmen Berg, Gabriele Mercado-Blanco, Jesus eng AGL2016-75729-C2-1-R/Ministry of Economy, Industry and Competitiveness/ AGL2016-75729-C2-1-R/Agencia Estatal de Investigacion/ P12-AGR-0667/Junta de Andalucia (Consejeria de Economia, Innovacion y Ciencia)/ Co-financed/European Regional Development Fund (ERDF)/ Ayudas de movilidad internacional para el fomento de tesis con mencion internacional o en regimen de cotutela/University of Cordoba/ Switzerland 2022/02/16 Plants (Basel). 2022 Jan 25; 11(3):318. doi: 10.3390/plants11030318" |
