Effect of biological fertilizers on biochemical and physiological parameters of basil (Ocimum basilicum L.) medicine plant.

摘要

Basil (Ocimum basilicum) is one of the most important medicine plants that its essential (leaf, flower and seed) is used in different medicinal industries. In order to study the effects of salinity stress and plant growth promoting rhizobacteria (PGPR) on the antioxidant status, photosynthesis, mineral content and growth of basil (Ocimum basilicum L.). Increasing salinity in the soil decreased plant growth, photosynthesis, stomatal conductance, chlorophyll content and mineral uptake compared to soil without salinity. Inoculation with two PGPR strains, Pseudomonades sp. and Bacillus lentus, into saline soils alleviated the salinity effects on the antioxidant enzymes ascorbate peroxidase (APX) and glutathione reductase (GR), along with those on photosynthesis, mineral content and growth. As a result, an increase in salinity in the soil caused a physiological response or disorder in basil plants. Treatment with PGPR strains could alleviate the effect of potentially toxic ions.