Kungani izitshalo eziguqulwe izakhi zofuzo ezingamelani nezinambuzane zingamelani nezinambuzane? Lokhu kuqala ngokutholakala “kwesakhi sofuzo samaprotheni esingamelani nezinambuzane”. Eminyakeni engaphezu kweyikhulu eyedlule, emshinini wokugaya ukudla edolobheni elincane laseThuringia, eJalimane, ososayensi bathola igciwane elinomsebenzi wokubulala izinambuzane baliqamba ngokuthi iBacillus thuringiensis ngegama ledolobha. Isizathu sokuthi iBacillus thuringiensis ingabulala izinambuzane ukuthi iqukethe “iphrotheni ekhethekile engamelani nezinambuzane iBt”. Le phrotheni yokulwa nezinambuzane i-Bt ikhethekile kakhulu futhi ingabopha kuphela “kuma-receptor athile” emathunjini ezinambuzane ezithile (njengezinambuzane “ze-lepidopteran” njengezinambuzane namabhabhathane), okubangela ukuthi izinambuzane zibhoboke futhi zife. Amaseli okugaya ukudla kwabantu, imfuyo kanye nezinye izinambuzane (izinambuzane ezingezona “zeLepidopteran”) awanawo “ama-receptor athile” abopha le phrotheni. Ngemva kokungena emgudwini wokugaya ukudla, iphrotheni yokulwa nezinambuzane ingagaywa futhi yonakale kuphela, futhi ngeke isebenze.
Ngenxa yokuthi iphrotheni ye-Bt elwa nezinambuzane ayinangozi emvelweni, kubantu nasezilwaneni, izibulala-zinambuzane eziphilayo ezinayo njengengxenye eyinhloko ziye zasetshenziswa ngokuphephile ekukhiqizweni kwezolimo iminyaka engaphezu kwengu-80. Ngokuthuthuka kobuchwepheshe be-transgenic, abalimi bezolimo badlulisele i-gene "yephrotheni engamelana nezinambuzane ye-Bt" ezitshalweni, okwenza izitshalo nazo zingamelani nezinambuzane. Amaprotheni angamelana nezinambuzane asebenza ezilwanyaneni ngeke asebenze kubantu ngemva kokungena endleleni yokugaya ukudla yomuntu. Kithina, iphrotheni engamelana nezinambuzane iyagaywa futhi yonakaliswe ngumzimba womuntu njengephrotheni esebisini, iphrotheni engulubeni, kanye nephrotheni ezitshalweni. Abanye abantu bathi njengoshokoledi, obhekwa njengento emnandi ngabantu, kodwa enobuthi yizinja, izitshalo ezingamelana nezinambuzane eziguqulwe izakhi zofuzo zisebenzisa ithuba lokwehluka kwezinhlobo ezinjalo, okubuye kube yingqikithi yesayensi.
Isikhathi sokuthunyelwe: Feb-22-2022