Abstract:

A red bacterium named w-04 that could use pectin as the only carbon source was isolated from Dian-chi Lake. When cultivated with M. aeruginosa Kütz, the number of M. aeruginosa Kütz cells showed negative dependence on the amount of bacteria added. The number of M. aeruginosa Kütz cells changed periodically with the time of cultivation. The duration of the period was about 6 days. With the experimental group in which the ratio of liquid volume of bacteria to M. aeruginosa Kütz was 10 to 100, the viable cells of M. aeruginosa Kütz droped to 0 after 8-day cultivation. No chlorophyll was detected in the culture after 30-day continuous cultivation, indicating the M. aeruginosa Kütz cells, as well as chlorophyll, were broken down and could not propagate anymore.