Abacwaningi e-John Innes Centre kanye nabalingani babo e-Chinese Academy of Sciences bahlonze ukushintshwa kwamangqamuzana okunquma ukukhula okuhlukile kwamaseli kanye nokuma kwezitho zezitshalo. Ingosi ye-Phys.org.
I-auxin yesilawuli sokukhula ikhuthaza ukukhula kwamaseli ngephrotheni engaphezulu ebizwa nge-transmembrane kinase 1 (TMK1). Phezulu kweseli, le phrotheni ishintsha izakhiwo zezindonga zamangqamuzana ezikhuthaza ukukhula kwamangqamuzana. Kodwa i-TMK1 iphinda ibonise umphumela ophambene wokukhula kancane ku-nucleus yeseli, lapho icindezela ukukhula kweseli ngokunciphisa ukubonakaliswa kofuzo kwe-auxin-mediated.
UDkt. Bengo Gu kanye nozakwabo babonise ukuthi i-TMK1 yenza kanjani le misebenzi ebonakala iphambene ezingxenyeni ezahlukene zeseli. Ukuqhekeka kwephrotheni ye-TMK1 kwenzeka endaweni yeseli, ingxenye yeprotheni eqhekekile idluliselwa ku-nucleus yayo. Nakuba le nqubo ivame kakhulu, ukuhlonza amaprotheni ahilelekile ekuqhekekeni kube nzima ngaphambili.
Amaprotheni ahilelekile angamalungu omndeni we-DA1 peptidase. Lawa ma-enzyme aphula amaprotheni ahlukahlukene abandakanyeka ekuphenduleni kokukhula futhi akhuthaze ukukhula kwezitho zezitshalo.
Ukuboniswa kokuqhekeka komndeni we-DA1 we-TMK1 kukhombisa ukuthi bakushintsha kanjani ukugeleza kolwazi kusuka endaweni yeseli kuya kuyinucleus, kubumba usayizi weseli nokukhula kwesitho. Ukunqunywa kwalezi zinqubo kwenza umnikelo obalulekile ekuqondeni izinqubo zokukhula kwezitshalo.
Lo msebenzi ufakazela ukuthi ama-peptidase omndeni we-DA1 athinta ukudluliselwa kwesignali ye-hormonal, ekhomba indlela evamile yokudluliselwa kwesignali kusuka kulwelwesi lwe-plasma kuya ku-nucleus. Imiphumela ingase inikeze indlela yokuthuthukisa ukuhluma kwembewu yezitshalo.