21 Aug Potential of Pseudomonas Fluorescens as biocontrol agent of fungal pathogens.
स्यूडोमोनास फल्योरेसेन्स की फफूंद रोगाणुओं केे जैव नियंत्रण की क्षमता। Plant diseases cause 13 - 20 % losses in crop production worldwide. Control of plant disease by chemical can be spectacular but the accumulation of harmful chemical residue sometimes causes serious ecological problems. Biocontrol agents are economical, suppress the inoculum load of the target pathogen, long lasting and free from residual side effect. Fungi in the genus Trichoderma and Bacteria in the genera of Pseudomonas and Bacillus are increasing interest as bioprotectants against plant diseases. Biocontrol agents in general and Pseudomonas fluorescens in particularhave gained importance as a component of Integrated Pest Management for sustainable agriculture (Mukhopadhyay, 1987). Pseudomonas fluorescens belong to Plant Growth Promoting Rhizobacteria (PGPR), the important group of bacteria that play a major role in the plant growth promotion, induced systemic resistance, biological control of plant pathogens etc. P. fluorescens as biocontrol agent: The bacteria P. fluorescens possess many traits that make them well suited as biocontrol and growth-promoting agents.These include the ability to- Grow rapidly in vitro and to be mass produced. Rapidly utilize seed and root exudates. Colonize and multiply in the rhizosphere and spermosphere environments and in the interior of the plants. Produce a wide spectrum of bioactive metabolites. Compete aggressively with other microorganisms. Adapt to environmental stresses and, Inexpensive Isolation and identification: Collect rhizosphere soil...