Vatsvagiri kubva kuDhipatimendi reBiochemistry kuIndia Institute of Sciences (IISc) vakawana nzira yakatsvakwa kwenguva refu yekudzora kukura kwezvirimwa zvepasi zvepasi senge bryophytes (boka rinosanganisira mosses uye liverworts) iro rakachengetwa mune yakazotumbuka maruva.
Chidzidzo ichi, chakaburitswa mujenari Nature Chemical Biology, yakanangana neiyo isiri-canonical regulation yeDELLA mapuroteni, inyanzvi yekukura inodzvanya kupatsanurwa kwesero mu embryophytes (zvidyarwa zvevhu).
Sezvineiwo, bryophytes, zvirimwa zvekutanga kuoneka panyika makore 500 miriyoni apfuura, inoshaya GID1 receptor kunyangwe ichigadzira iyo phytohormone GA. Izvi zvinomutsa mubvunzo wekuti kukura nekusimudzirwa kwezvidyarwa zvevhu zvekutanga zvakadzorwa sei.
Vachishandisa liverwort Marchantia polymorpha semuenzanisi sisitimu, vaongorori vakawana kuti izvi zvidyarwa zvekare zvinoshandisa yakasarudzika enzyme, MpVIH, inogadzira cellular messenger inositol pyrophosphate (InsP₈), ichivabvumira kuputsa DELLA pasina kudiwa kwegibberellic acid.
Vatsvagiri vakawana kuti DELLA ndeimwe yemaserura anotariswa eVIH kinase. Uyezve, vakacherechedza kuti zvinomera zvisina MpVIH zvinotevedzera phenotypes yeM. polymorpha zvinomera zvinonyanya kudzvinyirira DELLA.
"Panguva ino, takafara kunzwisisa kana kugadzikana kweDELLA kana chiitiko chakawedzerwa mumiti isina kukwana yeMpVIH," akadaro Priyanshi Rana, munyori wekutanga uye mudzidzi akapedza kudzidza muboka rekutsvaga raLahey. Zvichienderana nefungidziro yavo, vaongorori vakawana kuti kuvharidzira DELLA kwakanunura zvakanyanya kukura kwakashata uye budiriro phenotypes yeMpVIH mutant zvirimwa. Mhedzisiro iyi inoratidza kuti VIH kinase inodzora DELLA zvisina kunaka, nekudaro ichikurudzira kukura nekukura kwechirimwa.
Tsvagiridzo mumapuroteni eDELLA yakatanga kuGreen Revolution, apo masayendisiti akashandisa nekusaziva kugona kwavo kugadzira mhando dzinopa goho rehafu-diki. Kunyange hazvo ruzivo rwemashandiro avakaita rwakanga rusina kujeka panguva iyoyo, tekinoroji yemazuva ano inobvumira masayendisiti kushandura mashandiro emapuroteni aya kuburikidza neinjiniya yemajini, zvichiwedzera kuwedzera goho rezvirimwa.
Kudzidza zvirimwa zvekutanga zvevhu zvinopawo ruzivo mukushanduka kwavo mukati memakore 500 miriyoni apfuura. Semuenzaniso, kunyangwe zvirimwa zvemazuvano zvinotumbuka zvichikanganisa mapuroteni eDELLA kuburikidza negibberellic acid-inotsamira nzira, InsP₈ inosunga nzvimbo dzinochengetedzwa. Izvi zvakawanikwa zvinopa manzwisisiro mukushanduka kwemasero masaina nzira nekufamba kwenguva.
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Nguva yekutumira: Sep-15-2025