Vatsvaguriri vanobva kuDhipatimendi reBiochemistry kuIndian Institute of Sciences (IISc) vakawana nzira yagara ichitsvagwa yekugadzirisa kukura kwezvirimwa zvepasi zvekare zvakaita sebryophytes (boka rinosanganisira mosses neliverworts) izvo zvakazochengetwa muzvirimwa zvakazobuda maruva.
Chidzidzo ichi, chakaburitswa mumagazini inonzi Nature Chemical Biology, chakanyanya kutarisa pakudzora mapuroteni eDELLA zvisiri zvemutemo, murairidzi mukuru wekukura uyo unoderedza kupatsanurwa kwemasero mu embryophytes (zvirimwa zvemuvhu).
Zvinofadza kuti, bryophytes, zvirimwa zvekutanga kuonekwa panyika makore angangoita mamiriyoni mazana mashanu apfuura, hazvina GID1 receptor kunyangwe zvichigadzira phytohormone GA. Izvi zvinomutsa mubvunzo wekuti kukura nekukura kwezvirimwa izvi zvepakutanga zvaidzorwa sei.
Vachishandisa liverwort Marchantia polymorpha senzira yekuenzanisira, vaongorori vakaona kuti zvirimwa izvi zvekare zvinoshandisa enzyme yakasarudzika, MpVIH, inogadzira cellular messenger inositol pyrophosphate (InsP₈), zvichivabvumira kupwanya DELLA pasina chikonzero chegibberellic acid.
Vaongorori vakaona kuti DELLA ndeimwe yezvinangwa zveVIH kinase mumasero. Uyezve, vakaona kuti zvirimwa zvisina MpVIH zvinotevedzera phenotypes yezvirimwa zveM. polymorpha zvinobudisa DELLA zvakanyanya.
"Panguva ino, takafara kunzwisisa kana kugadzikana kana kushanda kweDELLA kwakawedzerwa muzvirimwa zvisina kukwana MpVIH," akadaro Priyanshi Rana, munyori wekutanga uye mudzidzi wepashure pekudzidza muboka rekutsvagisa raLahey. Zvichienderana nefungidziro yavo, vaongorori vakaona kuti kudzikamisa DELLA kwakaponesa zvakanyanya kukura kwakakanganisika uye kukura kwezvirimwa zvakachinja zveMpVIH. Mhedzisiro iyi inoratidza kuti VIH kinase inodzora DELLA zvisina kunaka, nokudaro ichikurudzira kukura nekukura kwezvirimwa.
Tsvakurudzo pamusoro pemapuroteni eDELLA yakatangira kuGreen Revolution, apo masayendisiti akashandisa mukana wavo wekugadzira mhando dzemhando ...
Kudzidza zvirimwa zvepasi pekutanga kunopawo ruzivo rwekushanduka-shanduka kwazvo mumakore anopfuura mamiriyoni mazana mashanu apfuura. Semuenzaniso, kunyangwe zvirimwa zvemazuva ano zvinotumbuka zvichikanganisa mapuroteni eDELLA kuburikidza nekushandisa gibberellic acid-dependent mechanism, nzvimbo dzekubatanidza dzeInsP₈ dzakachengetwa. Izvi zvakawanikwa zvinopa ruzivo rwekushanduka-shanduka kwenzira dzekutumira masaini emasero nekufamba kwenguva.
Nyaya iyi yakadhindwazve kubva kumashoko anotevera. Cherechedza: Rugwaro runogona kugadziriswa zvichienderana nehurefu uye zviri mukati. Kuti uwane rumwe ruzivo, ndapota taura nemunyori. Mutemo wedu wekuburitswa kwemashoko unogona kuwanikwa pano.
Nguva yekutumira: Gunyana-15-2025