I-Bacillus thuringiensis kurstaki (Btk) iyiqembu lamabhaktheriya asetshenziswa njengama-ejenti okulawula okuphilayo ngokumelene ne-lepidopterans.I-Btk, kanye neminye imikhiqizo ye-B. thuringiensis, ingenye yezibulala-zinambuzane eziphilayo ezisetshenziswa kakhulu ngenxa yokucaciswa kwayo okuphezulu;iyasebenza ngokumelene nama-lepidopterans, futhi ayinawo umthelela omncane ezinhlotsheni ezingezona ezihlosiwe.Ngesikhathi se-sporulation, i-Btk ikhiqiza iphrotheni eyikristalu ebulalayo ezibungwini ze-lepidopteran.Uma isingenile isinambuzane, ukuchithwa kwekristalu kuvumela ukuba i-protoxin ikhishwe.Ubuthi bube sebusebenza yijusi yamathumbu ezinambuzane, bese iqala ukubhidliza amathumbu.
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