[Peculiarities of growth and pathogenic features of potato black leg agents under different temperature conditions]
2007
Rajko, A.M., National Academy of Sciences. Scientific and Practical Center for Potato, Vegetable and Fruit Growing (Belarus). Institute for Fruit Growing
As a result of conducted research on influence of temperature on growth of black leg and potato soft rot agents in vitro it is determined, that the maximum augmentation of biomass Pectobacterium carotovorum subsp. atrosepticum takes place at 24 deg C, optimum conditions for Pectobacterium carotovorum subsp. carotovorum growth develop at temperature 27 - 30 deg C. At temperatures from 16 up to 35 deg C Pectobacterium carotovorum subsp. carotovorum is characterized by more intensive cell division, than Pectobacterium carotovorum subsp. atrosepticum. Development of soft rot on potato tubers inoculated with Pectobacterium carotovorum increases with growth of temperature in a range 5-27 deg C. Maximum soft rot development in potato tubers was reached at 27 deg C. The bacteria Pectobacterium carotovorum subsp. carotovorum tend to cause rotting of plant tissues at high temperatures. Only in a narrow temperature range close to 20 deg C both bacteria agents of black leg and soft rot develop at equal rates
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