Isitshalo esilinyiwe esifanelekile simnandi futhi sithela kakhulu, futhi simelana nezifo nezinambuzane. Kodwa uma izakhi zofuzo ezihambisanayo ziqhelelene kakhulu nechromosome, ezinye zalezi zici ezinhle zingase zilahleke enqubweni yokukhetha. Ukuqinisekisa ukuthi zonke izici ezinhle zidluliselwa ndawonye, abacwaningi e-Karlsruhe Institute of Technology (KIT) basebenzise isikelo samangqamuzana e-CRISPR/Cas ukuze baguqule futhi bavale ngofuzo ama-chromosome eshumi ayisishiyagalolunye e-Arabidopsis, kubika Ingosi ye-Phys.org. Izici ezifakwe ikhodi kule ngxenye ye-chromosome ziba "zingabonakali" ekushintsheni kofuzo futhi ngaleyo ndlela zingadluliselwa zingashintshile.
Ukuhlela okuhlosiwe, ukufakwa noma ukucindezela ufuzo ezitshalweni kungenzeka kusetshenziswa CRISPR/Cas isikelo samangqamuzana. Le ndlela ingasetshenziswa ukwandisa ukumelana kwezitshalo ezinambuzaneni, izifo noma imithelela yezemvelo NgoLwesithathu.
“Eminyakeni yamuva nje, ngokokuqala ngqa, siye sakwazi ukusebenzisa i-CRISPR/Cas hhayi ukuhlela izakhi zofuzo kuphela, kodwa futhi nokuguqula ukwakheka kwama-chromosome,” kusho uProf. Holger Puchta, obefunda isikelo sofuzo neqembu lakhe. e-China Botanical Institute iminyaka engu-30.
Manje abacwaningi sebekwazile ukuvimbela ukushintshana ngofuzo, ngokuvamile okuyingxenye yenqubo yofuzo, kodwa engaphazamisa ubudlelwano phakathi kwezici. Kuze kube manje, uma izici zezitshalo zazizodluliselwa ndawonye, izakhi zofuzo zalezo zici kwakufanele zisondelane ku-chromosome efanayo. Uma izakhi zofuzo ezinjalo ziqhelelene kakhulu, ngokuvamile ziyahlukana phakathi nefa, ngakho-ke isici esiwusizo singase kulahleke inqubo yokukhetha.
Ocwaningweni lwabo, ososayensi balandela isibonelo semvelo. "Ama-Inversions - uhlobo lokungabonakali kofuzo - nawo avame ukwenzeka ngezinga elincane ezitshalweni zasendle nezitshaliwe. Sifunde izifundo emvelweni, sasebenzisa futhi sandisa ulwazi lwethu lwe inqubo yemvelo", kusho uPuchta.
Ngokusebenzisana noProf. Andreas Huben we-Institute for Plant Genetics and Cultivated Plant Research. U-Leibniz (IPK) u-Puchta nethimba lakhe baphenye ingxenye eyisishiyagalolunye-yeshumi yama-chromosome entweni eyimodeli, i-Arabidopsis thaliana. Kuphela ekugcineni kwama-chromosome lapho izakhi zofuzo zigcina ukulandelana kwazo kwasekuqaleni. “Ngalezi zingcezu, i-chromosome ingadluliselwa esizukulwaneni esilandelayo njengamanye ama-chromosome futhi ingalahleki ngokuphelele,” kusho uPuchta.
Ukuze kutshalwe ngempumelelo izitshalo zezolimo, kubalulekile ukuhlanganisa izici eziningi ezinhle ngangokunokwenzeka esitshalweni esisodwa. “Yebo, abalimi bezitshalo bafuna imikhiqizo yabo ibe mnandi, ibe namavithamini amaningi ngangokunokwenzeka, futhi imelane nezifo. Ngendlela yethu, singakwenza lokhu kube lula esikhathini esizayo, ”kusho uPuchta.