A cikin dabbobi, lalacewar DNA na iya haifar da samuwar ciwace-ciwace. Ko da yake tsire-tsire suna rayuwa na dogon lokaci ba tare da ciwon daji ba, yawancin abubuwan muhalli suna hana haɓakarsu, kamar radiation, salinity, manyan karafa da ambaliya, wanda zai iya haifar da lalacewar DNA da kuma rage yawan amfanin ƙasa.
Ta yaya tsire-tsire ke kare kansu daga lalacewar DNA?
Tawagar bincike daga cibiyar nazarin halittu ta Qingdao da fasahar kere-kere (QIBEBT) ta Kwalejin Kimiyya ta kasar Sin (CAS) ta ba da amsar wannan tambaya. Sun gano hadaddun furotin da ake kira MAC, wanda ke da mahimmanci don amsawar shuka ga lalacewar DNA, rahotanni Phys.org portal.
An buga aikin su a cikin mujallar Plant Physiology a ranar 4 ga Nuwamba.
Masu binciken sun gano cewa tsire-tsire ba tare da hadadden sunadaran sunadaran MAC mai aiki ba sun nuna lahani na girma kuma suna cikin sauƙi lalacewa ta hanyar methyl methanesulfonate (MMS), wani sinadari da ke haifar da karyawar DNA.
Har ila yau, sun gano cewa yawan jurewar boron na waɗannan mutants na MAC ya ragu. Babban abun ciki na boron a cikin ƙasa yana cutar da amfanin amfanin gona da abubuwan gina jiki a cikin abinci.
Matsayin furotin MAC5A (ɓangare na MAC hadaddun) an sarrafa shi ta hanyar 26S proteasome (26SP), injin kwayoyin da ake buƙata don sarrafa furotin ta hanyar hulɗar kai tsaye.
Tare da taimakon biochemical da Ta hanyar nazarin kwayoyin halitta, masu binciken sun gano hadaddun furotin guda biyu suna aiki tare don kare tsire-tsire daga lalacewar DNA wanda methyl methanesulfonate da babban boron suka haifar.
Wannan binciken ya gano hanyoyin kwayoyin yadda tsire-tsire ke amsa lalacewar DNA kuma ya ba da sabon maɓalli don ingantawa samar da amfanin gona da ingancin abinci.