Root colonization and growth promotion of wheat and maize by Pseudomonas aurantiaca SR1 |
| |
Authors: | Susana B Rosas Germn Avanzini Evelin Carlier Carolina Pasluosta Nicols Pastor Marisa Rovera |
| |
Institution: | aDepartamento de Biología Molecular, Universidad Nacional de Río Cuarto, Campus Universitario, Ruta 36, Km 601, 5800 Río Cuarto, Cba, Argentina;bDepartamento de Microbiología e Inmunología, Universidad Nacional de Río Cuarto, Campus Universitario, Ruta 36, Km 601, 5800 Río Cuarto, Cba, Argentina |
| |
Abstract: | Wheat (Triticum aestivum L.), rice (Oryza sativa) and maize (Zea mays L.) are the most important cereals worldwide. However, in the last few years, soil has been submitted to both use and handling pressures due to the increase in agricultural practices, which are leading to its degradation. The use of plant growth-promoting rhizobacteria (PGPR) as inoculants constitutes a biological alternative for sustainable production. Pseudomonas aurantiaca SR1 was formulated as an inoculant in order to evaluate its growth promotion effect in the field when applied on maize and wheat seeds at the sowing time. P and N fertilization treatments were also included in the assays. P. aurantiaca SR1 colonized the root system of both crops and it persisted at appropriate population densities. It also showed a significant plant growth-promoting effect that was reflected in the yield. Another relevant finding was that both crops, when inoculated with P. aurantiaca SR1, presented higher yields with fertilization doses lower than those conventionally applied. This indicated its potential use as a reasonable alternative for crop production, with a minimization of the ecological impact. |
| |
Keywords: | Pseudomonas aurantiaca SR1 Wheat Maize Inoculation Growth promotion |
本文献已被 ScienceDirect 等数据库收录! |
|