Cov qoob loo uas hloov kho caj ces uas tiv taus kab yuav tua cov kab yog tias lawv noj lawv. Puas yuav cuam tshuam rau tib neeg?

Vim li cas cov qoob loo uas hloov kho caj ces uas tiv taus kab thiab tsis kam kab? Qhov no pib nrog kev tshawb pom ntawm "cov noob protein tiv taus kab". Ntau tshaj 100 xyoo dhau los, hauv lub tsev zeb hauv lub nroog me me Thuringia, lub teb chaws Yelemees, cov kws tshawb fawb tau tshawb pom ib hom kab mob uas muaj cov haujlwm tua kab thiab muab nws lub npe hu ua Bacillus thuringiensis raws li lub nroog. Qhov laj thawj uas Bacillus thuringiensis tuaj yeem tua kab yog vim nws muaj cov protein tshwj xeeb "Bt tiv taus kab". Cov protein tiv thaiv kab Bt no yog qhov tshwj xeeb heev thiab tsuas yog tuaj yeem khi rau "cov receptors tshwj xeeb" hauv plab ntawm qee cov kab tsuag (xws li cov kab tsuag "lepidopteran" xws li npauj npaim thiab npauj npaim), ua rau cov kab tsuag tawg thiab tuag. Cov hlwb plab hnyuv ntawm tib neeg, tsiaj txhu thiab lwm yam kab (cov kab uas tsis yog "Lepidopteran") tsis muaj "cov receptors tshwj xeeb" uas khi cov protein no. Tom qab nkag mus rau hauv txoj hnyuv zom zaub mov, cov protein tiv thaiv kab tsuas yog tuaj yeem zom thiab lwj, thiab yuav tsis ua haujlwm.

Vim tias cov protein tiv thaiv kab Bt tsis muaj teeb meem rau ib puag ncig, tib neeg thiab tsiaj txhu, cov tshuaj tua kab uas muaj nws ua lub ntsiab lus tseem ceeb tau siv rau hauv kev ua liaj ua teb tau ntau tshaj 80 xyoo. Nrog rau kev txhim kho ntawm cov thev naus laus zis transgenic, cov neeg yug tsiaj tau hloov cov noob "Bt kab-resistant protein" mus rau hauv cov qoob loo, ua rau cov qoob loo kuj tiv taus kab. Cov protein tiv thaiv kab uas ua rau cov kab tsuag yuav tsis ua rau tib neeg tom qab nkag mus rau hauv tib neeg txoj hnyuv. Rau peb, cov protein tiv thaiv kab yog zom thiab lwj los ntawm tib neeg lub cev ib yam li cov protein hauv mis nyuj, cov protein hauv nqaij npuas, thiab cov protein hauv cov nroj tsuag. Ib txhia neeg hais tias ib yam li chocolate, uas suav hais tias yog khoom noj khoom haus los ntawm tib neeg, tab sis raug lom los ntawm dev, cov qoob loo tiv thaiv kab uas hloov kho caj ces siv qhov sib txawv ntawm cov tsiaj no, uas kuj yog lub ntsiab lus ntawm kev tshawb fawb.