I-Colorado potato beetle ingenye yezinambuzane eziyingozi kakhulu zamazambane. Iqinile futhi isheshe imelane nezibulala-zinambuzane. Ososayensi baseRussia bafunda amabhaktheriya akhiqiza ubuthi obuthile, ngesisekelo sokuthi imikhiqizo yebhayoloji idalwe ukuvikela izitshalo ezinambuzaneni. Kwavela ukuthi ukwengeza ama-spores (amafomu okuphumula) we-microorganism ku-insecticide kubhubhisa ukuzivikela kwamathumbu emathunjini e-Colorado potato beetle izibungu futhi kubenza babe sengozini kakhulu ye-toxin. Lo msebenzi wawusekelwa i-Russian Science Foundation (RSF) futhi wanyatheliswa kumagazini i-Toxins.
Ibhaktheriya i-Bacillus thuringiensis (BT) ikhiqiza ubuthi obuthile be-Cry obuthinta ngokukhethekile izinambuzane. I-substance iqala ukusebenza kuphela ngemva kokuxhumana nama-enzyme emathumbu e-beetle, iphazamisa ukusebenza kwesistimu yayo yokugaya futhi ibangele indlala.
Lesi zinambuzane ngabe kade safa ukube bekungengenxa yezindlela zaso zokujwayela izidakamizwa ezisuselwa ku-BT. Ukuzivikela kwamathumbu emathunjini kuyathuthuka, futhi ngenxa yalokho, amabhaktheriya kanye nobuthi bawo abakwazi ukufeza injongo yabo. Abacwaningi baseNovosibirsk State Agrarian University (Novosibirsk) kanye neSiberian Federal Scientific Center for Agrobiotechnology of the Russian Academy of Sciences (Krasnoobsk) bathole ukuthi zingadlula kanjani lezi zindlela. Ukuhlanganisa ubuthi beprotheyini nezinhlamvu (uhlobo oluthule lwebhaktheriya olungasebenza futhi luphindaphindeke ngaphakathi kwezinambuzane) lwe-Bacillus thuringiensis kusiza ukubulala ngempumelelo i-Colorado potato beetle.
Lapho ingxube yezinhlamvu zebhaktheriya nobuthi ingena emzimbeni, izinambuzane ziqala uhlelo lokubhubhisa kanye nokungathathi hlangothi kwezinto ezinobuthi ezihlukahlukene (ukukhipha ubuthi). Ngesikhathi esifanayo, ukuzivikela kwe-humoral emathunjini kucushiwe, okuvikela umzimba kumagciwane. Kodwa-ke, abacwaningi bathola esinye isici - lapho kuhlanganiswa nobuthi nezinhlamvu, izibungu zibonisa ukungalingani okunamandla kwe-redox futhi inqubo yokulimala kwamangqamuzana amathumbu ngenxa ye-oxidation iqala. Kuhlanganiswe ndawonye, lokhu kuholela ekuphazamisekeni kokuzivikela kwe-antioxidant yezibungu kanye nokuwohloka kwempilo yazo jikelele.
“Lapho ubuthi buhlanganiswa nezinhlamvu zebhaktheriya i-Bacillus thuringiensis, ukufa kwezinambuzane kwenzeka ngokushesha, bese kufa amabhungane amazambane angama-30% ngaphezulu. Ukwethulwa kwemithi ethuthukisiwe kanye nobuchwepheshe kuzokwenza kube nokwenzeka ukugcwalisa imakethe yezibulala-zinambuzane eziphilayo ngemithi yasekhaya, ukuthuthukisa ikhwalithi yemikhiqizo yokudla, ukunciphisa umthwalo wezibulala-zinambuzane emvelweni futhi kunciphise umthelela omubi empilweni yomphakathi, "kusho u-Ivan Dubovsky. , inhloko yephrojekthi yesibonelelo se-RSF, Udokotela Wesayensi Yezinto Eziphilayo, inhloko yelabhorethri Ukuvikelwa kwezitshalo zebhayoloji kanye ne-biotechnology, i-Novosibirsk State Agrarian University.