Ofufuza ku John Innes Center ndi anzawo ku Chinese Academy of Sciences apeza kusintha kwa maselo komwe kumatsimikizira kukula kwa maselo ndi mawonekedwe a ziwalo za zomera. Tsamba la Phys.org.
Auxin yowongolera kukula imalimbikitsa kukula kwa maselo kudzera mu puloteni yapamwamba yotchedwa transmembrane kinase 1 (TMK1). Pa selo pamwamba, mapuloteni modulates maselo khoma katundu amene amalimbikitsa kukula kwa maselo. Koma TMK1 imawonetsanso momwe kukula kwapang'onopang'ono mu cell cell, komwe kumachepetsa kukula kwa ma cell ndikuchepetsa mawonekedwe a jini a auxin.
Dr. Bengo Gu ndi anzawo adawonetsa momwe TMK1 imagwirira ntchito zomwe zimawoneka zotsutsana m'malo osiyanasiyana a cell. Kuphatikizika kwa mapuloteni a TMK1 kumachitika pama cell, gawo la mapuloteni ong'ambika limasamutsidwa ku phata lake. Ngakhale kuti njirayi ndi yofala kwambiri, kuzindikira mapuloteni omwe amaphatikizidwa mu cleavage kwakhala kovuta kale.
Mapuloteni omwe akukhudzidwa ndi mamembala a banja la DA1 peptidase. Ma enzymes awa amaphwanya mapuloteni osiyanasiyana omwe amakhudzidwa ndi kukula ndikulimbikitsa kukula kwa ziwalo za zomera.
Chiwonetsero cha DA1 banja TMK1 cleavage chikuwonetsa momwe amasinthira kutuluka kwa chidziwitso kuchokera pa cell kupita ku nucleus, kupanga kukula kwa cell ndi kukula kwa chiwalo. Kutsimikiza kwa njirazi kumathandizira kwambiri kumvetsetsa njira zakukula kwa mbewu.
Ntchitoyi imatsimikizira kuti ma peptidase a banja la DA1 amakhudza kusintha kwa ma siginecha a mahomoni, zomwe zimaloza ku njira yodziwika bwino yosinthira chizindikiro kuchokera ku nembanemba ya plasma kupita kumtima. Zotsatirazi zitha kupereka njira yowonjezera kumera kwa mbeu.