Multifunctional potential of endophytic bacteria from Anacardium othonianum Rizzini in promoting in vitro and ex vitro plant growth
| Autor: | Paula Sperotto Alberto Faria, Paula Fabiane Martins, Vinicius de Oliveira Marques, Priscila Jane Romano Gonçalves Selari, Juliana de Fátima Sales, Fabiano Guimarães Silva |
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| Rok vydání: | 2020 |
| Předmět: |
Siderophore
Biological pest control Plant Development Siderophores Context (language use) Microbiology Plant Roots Crop 03 medical and health sciences Fusarium RNA Ribosomal 16S Fusarium oxysporum Endophytes Anacardium Phylogeny 030304 developmental biology 0303 health sciences biology Acinetobacter Bacteria 030306 microbiology business.industry Pantoea food and beverages biology.organism_classification Pantoea agglomerans Biotechnology Droughts Anacardium othonianum Seeds Acinetobacter lwoffii business Brazil |
| Zdroj: | Microbiological research. 242 |
| ISSN: | 1618-0623 |
| Popis: | Anacardium othonianum Rizzini, a cashew tree native to the Brazilian Cerrado, is economically important due to its applications in the food, chemical and pharmaceutical industries. However, A. othonianum yields a crop with low productivity due to a number of factors, such as nutritionally poor soils, drought and losses due to pests and diseases. Brazil is one of the nine largest cashew nut producers worldwide, and sustainable technologies are needed to increase the productivity of this crop. In this context, the use of endophytic microorganisms could promote plant growth and provide protection against phytopathogens. In this study, the isolation of the root endophytic community of A. othonianum led to the characterization of 22 distinct bacterial strains with multifunctional traits for plant growth promotion. The results of in vitro assays to assess auxin synthesis, phosphate solubilization, phosphatase and siderophore production and biocontrol against Fusarium oxysporum led to the selection of Acinetobacter lwoffii Bac109 and Pantoea agglomerans Bac131 as the most promising strains. The reinoculation of the Bac109 and Bac131 strains onto A. othonianum seeds showed that the treatment containing a mixture of these strains was the most effective in promoting increases in the biometric parameters of early plant growth. Thus, this study highlights the biotechnological potential of a consortium of A. lwoffii Bac109 and P. agglomerans Bac131 for future applications in sustainable cashew cultivation. |
| Databáze: | OpenAIRE |
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