Protozoa stimulate the plant beneficial activity of rhizospheric pseudomonads
| Autor: | Betina Cecilia Agaras, Ellen Latz, Alexandre Jousset, Simone Weidner, Claudio Valverde |
|---|---|
| Přispěvatelé: | Sub Ecology and Biodiversity, Ecology and Biodiversity |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Siderophore Otras Ciencias Biológicas WHEAT Soil Science Plant Science Biology PROTOZOA 01 natural sciences Microbiology purl.org/becyt/ford/1 [https] Ciencias Biológicas 03 medical and health sciences Pseudomonas parasitic diseases Protozoa purl.org/becyt/ford/1.6 [https] Pathogen 2. Zero hunger Rhizosphere fungi RHIZOSPHERE food and beverages PATHOGEN INHIBITION biology.organism_classification Pythium ultimum PLANT GROWTH PROMOTION 030104 developmental biology Pathogen inhibition Plant growth promotion Wheat Acanthamoeba castellanii PSEUDOMONAS CIENCIAS NATURALES Y EXACTAS Bacteria 010606 plant biology & botany |
| Zdroj: | Plant and Soil, 410(1-2), 509. Springer Netherlands CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| ISSN: | 0032-079X |
| Popis: | Aims: The functioning of plant-associated bacteria is strongly influenced by their interaction with other organisms. For instance, bacteria upregulate the production of secondary metabolites in presence of protozoa and we hypothesised that this interaction may contribute to plant health. Methods: Here, we tested if the effect of beneficial pseudomonads on wheat growth and health is modified by co-inoculation with the bacterivorous amoeba Acanthamoeba castellanii. We assessed effects of this co-inoculation in absence and presence of the root pathogen Pythium ultimum. Results: In absence of amoebae, bacterial isolates had few beneficial effects and some isolates exacerbated growth inhibition by the pathogen (despite their reported beneficial effects in vitro). Effects on plant growth in absence and presence of the pathogen were negatively correlated. Co-inoculation with amoebae suppressed this relationship, leading to plant growth promotion in absence and reduction of deleterious effects in presence of the pathogen. The positive effect of amoebae in absence of the pathogen could be related to bacterial siderophore production in vitro. Conclusions: Our results illustrate the discrepancy between in vitro and in vivo effects of plant beneficial bacteria. Incorporation of other rhizospheric trophic components such as protists may be a key factor to influence the plant-beneficial potential of bacteria in vivo. Fil: Weidner, Simone. Universität Göttingen; Alemania. Utrecht University; Países Bajos Fil: Latz, Ellen. Universität Göttingen; Alemania. German Centre for Integrative Biodiversity Research; Alemania. Universitat Jena; Alemania Fil: Agaras, Betina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Investigación en Interacciones Biológicas; Argentina Fil: Valverde, Claudio Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Investigación en Interacciones Biológicas; Argentina Fil: Jousset, Alexandre. Universität Göttingen; Alemania. Utrecht University; Países Bajos |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink