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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.
Helpful and Harmful Bacteria. A bacteria is a microscopic single celled organism that can only be viewed under a microscope. There are numerous types of bacteria. They can be classified as either helpful or harmful. In addition, they also come in different shapes and sizes.The different shapes include rod, sphere and spiral.Some bacteria depend on oxygen for their survival, these are called aerobic.here are numerous types of bacteria. They can be classified as either helpful or harmful. In addition, they also come in different shapes and sizes. The different shapes include rod, sphere and spiral.