DILEEP KUMAR, B S and BERGGREN , I and MARLENSOON , A
(2001)
Potential for Improving pea production by co-inoculation with flourscent Pseudomonous and Rhizobium.
Plant & Soil, 229.
pp. 25-34.
Abstract
Seed bacterization with five plant growth promoting fluorescent Pseudomonas strains isolated from Indian and
Swedish soils and three Rhizobium leguminosarum biovar viceae strains isolated from Swedish soils were shown
to promote plant growth in Pisum sativum L. cv. Capella. Co-inoculation of the fluorescent pseudomonads and
Rhizobium improved plant growth in terms of shoot height, root length and dry weight. Both the fluorescent
pseudomonads and Rhizobium were shown to exhibit a wide range of antifungal activity against pathogens specific
to pea. Seed bacterization with plant growth promoting strains alone and together with a rhizobial isolate, R 361-27
reduced the number of infected peas grown in Fusarium oxysporum infested soils. We found that the introduced
organisms were able to colonize the roots, which was confirmed using immunofluorescence staining and drug
resistant mutant strains. In a synthetic culture medium, all the plant growth promoting fluorescent pseudomonads
strains produced siderophores, which shown to express antifungal and antibacterial activity. Our results suggest the
potential use of these bacteria to induce plant growth and disease suppression in sustainable agriculture production
systems.
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