Me yasa gyare-gyare ta hanyar kwayoyin halitta amfanin gona mai jure kwari ke da juriya ga kwari?Wannan yana farawa tare da gano “kwayoyin furotin da ke jure kwari”.Fiye da shekaru 100 da suka gabata, a wani injin niƙa da ke ƙaramin garin Thuringia na ƙasar Jamus, masana kimiyya sun gano wata ƙwayar cuta da ke da aikin kashe kwari kuma suka sanya mata suna Bacillus thuringiensis bayan garin.Dalilin da yasa Bacillus thuringiensis zai iya kashe kwari shine saboda yana dauke da "protein Bt mai jure kwari".Wannan furotin na anti-kwari na Bt yana da takamaiman takamaiman kuma yana iya ɗaure kawai ga “takamaiman masu karɓa” a cikin gut na wasu kwari (kamar kwari na “lepidopteran” irin su moths da butterflies), yana haifar da kwarorin su ratsa su mutu.Kwayoyin hanji na mutane, dabbobi da sauran kwari (wadanda ba ''Lepidopteran' kwari) ba su da "takamaiman masu karɓa" waɗanda ke ɗaure wannan furotin.Bayan shigar da tsarin narkewa, furotin anti-kwarin zai iya narkewa kawai kuma ya lalace, kuma ba zai yi aiki ba.
Saboda furotin na Bt na rigakafin kwari ba shi da lahani ga muhalli, mutane da dabbobi, bio-insecticides tare da shi a matsayin babban bangaren an yi amfani da shi cikin aminci a cikin aikin noma sama da shekaru 80.Tare da haɓaka fasahar transgenic, masu kiwon noma sun canza kwayar halittar "Bt protein-resistant protein" zuwa amfanin gona, suna sa amfanin gona su zama masu jure wa kwari.Sunadaran da ke jure kwari da ke aiki akan kwari ba za su yi aiki a kan mutane ba bayan sun shiga cikin hanjin ɗan adam.A gare mu, sunadaran da ke jure kwari suna narkar da su kuma jikin ɗan adam ya ƙasƙanta kamar furotin a cikin madara, furotin a cikin naman alade, da furotin a cikin tsire-tsire.Wasu sun ce kamar cakulan, wanda mutane ke kallonsa a matsayin abinci mai daɗi, amma karnuka ne ke sa guba, amfanin gona da aka canza ta hanyar ƙwayoyin kwari suna amfani da irin waɗannan bambance-bambancen nau'in, wanda kuma shine ainihin ilimin kimiyya.
Lokacin aikawa: Fabrairu-22-2022