期刊
MICROBIOLOGICAL RESEARCH
卷 199, 期 -, 页码 98-109出版社
ELSEVIER GMBH
DOI: 10.1016/j.micres.2017.03.006
关键词
Phosphate solubilizing bacteria; Peanut; Maize; Abiotic stress; Pesticides
类别
资金
- Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
- Secretaria de Ciencia y Tecnica de la Universidad Nacional de Rio Cuarto (SECYT-UNRC)
- Agenda Nacional de Promocion Cientifica y Tecnologica (ANPCyT)
- CONICET
The aims of this study were, to analyze in vitro phosphate solubilization activity of six native peanut bacteria and to determine the effect of single and mixed inoculation of these bacteria on peanut and maize plants. Ability to produce organic acids and cofactor PQQ to solubilize FePO4 and AIPO4 and phosphatase activity were analyzed. Also, the ability to solubilize phosphate under abiotic stress and in the presence of pesticides of the selected bacteria was determined. The effect of single and mixed bacterial inocula was analyzed on seed germination, maize plant growth and in a crop rotation plant assay with peanut and maize. The six strains produced gluconic acid and five released cofactor PQQ into the medium. All bacteria showed ability to solubilize phosphate from FePO4 and AIPO4 and phosphatase activity. The ability of the bacteria to solubilize tricalcium phosphate under abiotic stress and in presence of pesticides indicated encouraging results. Bacterial inoculation on peanut and maize increased seed germination, plant's growth and P content. Phosphate solubilizing bacteria used in this study showed efficient phosphate mineralizing and solubilization ability and would be potential P-biofertilizers for peanut and maize. (C) 2017 Elsevier GmbH. All rights reserved.
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