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The beneficial effect of chitin-based treatments to antagonistic bacteria is not restricted to B. subtilis, with both chitin and chitosan improving the control of Fusarium wilt in both tomato [66] and cucumber [67] when applied to the soil with a range of different species of chitinolytic microbes.
1 Symbiotic bacteria: These bacteria have a mutual benefit from other organisms. 2  For e.g.: nitrogen fixing bacteria (or) rhizobium. 3  Parasitic bacteria: These bacteria are present in plants, animals and human beings. 4  These bacteria feeds on host cells and causes harm to the host. Heterotrophic bacteria: These bacteria are unable to synthesize their own food, hence they depends on other organic materials. 2  For e.g.: saprophytic bacteria-these bacteria feeds on dead and decaying matter. 3  Symbiotic bacteria: These bacteria have a mutual benefit from other organisms.