Colorado qos beetle yog ib qho ntawm cov qos yaj ywm uas txaus ntshai tshaj plaws. Nws yog hardy thiab sai sai ua resistant rau insecticides. Cov kws tshawb fawb Lavxias tau kawm cov kab mob uas tsim cov tshuaj lom tshwj xeeb, raws li cov khoom siv lom neeg tsim los tiv thaiv cov nroj tsuag los ntawm kab tsuag. Nws muab tawm tias ntxiv spores (so cov ntaub ntawv) ntawm cov kab mob mus rau cov tshuaj tua kab rhuav tshem cov kab mob hauv plab hnyuv ntawm Colorado qos beetle larvae thiab ua rau lawv muaj kev cuam tshuam rau cov tshuaj lom. Txoj haujlwm tau txhawb nqa los ntawm Lavxias Science Foundation (RSF) thiab luam tawm hauv phau ntawv xov xwm Toxins.
Cov kab mob Bacillus thuringiensis (BT) tsim cov Cry toxin tshwj xeeb uas cuam tshuam rau cov kab tsuag. Cov tshuaj pib ua haujlwm tsuas yog tom qab cuam tshuam nrog cov kab plab hnyuv enzymes, cuam tshuam kev ua haujlwm ntawm nws txoj hnyuv thiab ua rau kev tshaib plab.
Cov kab tsuag yuav tuag ntev dhau los yog tias tsis yog rau nws cov txheej txheem hloov kho rau BT-based tshuaj. Cov kab mob plab hnyuv txhim kho, thiab vim li ntawd, cov kab mob thiab lawv cov co toxins tsis tuaj yeem ua tiav lawv lub hom phiaj. Cov kws tshawb fawb los ntawm Novosibirsk State Agrarian University (Novosibirsk) thiab Siberian Federal Scientific Center for Agrobiotechnology ntawm Lavxias Academy ntawm Kev Tshawb Fawb (Krasnoobsk) tau xav txog yuav ua li cas hla cov txheej txheem no. Ua ke cov protein co toxins nrog spores (ib daim ntawv dormant ntawm cov kab mob uas tuaj yeem qhib thiab sib faib hauv kab) ntawm Bacillus thuringiensis pab tua Colorado qos beetle.
Thaum sib xyaw ntawm cov kab mob spores thiab co toxins nkag mus rau hauv lub cev, kab pib ua kom puas tsuaj thiab ua kom tsis zoo ntawm ntau yam tshuaj lom (detoxification). Nyob rau tib lub sijhawm, kev tiv thaiv kev lom zem hauv cov hnyuv tau qhib, uas tiv thaiv lub cev los ntawm cov kab mob. Txawm li cas los xij, cov kws tshawb nrhiav pom lwm qhov tshwj xeeb - thaum ua ke nrog cov co toxins thiab spores, cov larvae nthuav tawm qhov muaj zog redox imbalance thiab cov txheej txheem ntawm kev puas tsuaj rau cov hnyuv hlwb vim yog oxidation tshwm sim. Ua ke, qhov no ua rau muaj kev cuam tshuam ntawm kev tiv thaiv antioxidant ntawm cov larvae thiab ua rau lawv txoj kev noj qab haus huv.
"Thaum cov co toxins tau ua ke nrog cov kab mob ntawm cov kab mob Bacillus thuringiensis, kab tuag tshwm sim sai dua, thiab 30% ntau Colorado qos beetles tuag. Kev taw qhia ntawm cov tshuaj tsim thiab thev naus laus zis yuav ua rau nws muaj peev xwm ua lag luam ntawm biorational insecticides nrog cov tshuaj hauv tsev, txhim kho cov khoom noj khoom haus zoo, txo cov tshuaj tua kab hauv ib puag ncig thiab txo qhov tsis zoo rau pej xeem kev noj qab haus huv, "hais Ivan Dubovsky. , tus thawj coj ntawm RSF nyiaj pab project, Tus kws kho mob ntawm Biological Sciences, lub taub hau ntawm lub chaw soj nstuam.