بررسي اثر باكتري Pantoea agglomerans در كنترل كپك سبز ميوه پرتقال Penicillium digitatum

Biological Control of Green Mold of Orange, Caused by Penicillium digitatun, with Bacterium Pantoea aggtomerans

The effect of bacterium Pantoea egglomerans on a control of Penicillum digitaium causal agent of green mold of orange was investigated for a duration of 5 weeks. Results indicated that the disease can well be controlled by the bacterium at the temperatures 4°c and 20°c. The most effective result, with a reduction of 83.4% in infestation was obtained at 20°c. The efficacy of the bacterium was improved when mixed with Imazalil. No inhibition zone was observed between fungal and bacterial colonies when dual cultured under "in vitro" experimental treatment. In "in vivo" experiments, a subsiding of the malady was observed with an increase in the population of the bacterium. Therefore it can be concluded that the probable mechanism in control of the orange green mold disease (by the bacterium P. agglomerans) could be a colonization of fruit surface by the bacterium and itʹs competance with P. digitatum for nutrition as well as for habitation.