Kukweza ubwino wa zipatso pamene zikusungidwa bwinokukula kwa zomeranthawi zonse wakhala vuto lalikulu mu ulimi. Kafukufuku watsopano akusonyeza kuti kukwaniritsa izi kungakhale kosavuta kuposa momwe ankaganizira kale. Asayansi apeza kuti kuwonjezera ntchito ya "jini loyera" losungidwa kungathandize nthawi imodzi kuwonjezera thanzi komanso mphamvu za organoleptic za zipatso. Mwa kuwonjezera kufotokozedwa kwa jini yogwirizana ndi tRNA, gulu lofufuza linawonjezera kuchuluka kwa anthocyanins ndi terpenoids—zinthu zomwe zimakhudza mtundu, fungo, ndi mphamvu zoteteza ku ma antioxidants a zipatso. Kusintha kumeneku sikunakhudze kukula kwa zomera, kukula kwa zipatso, kapena kuchuluka kwa shuga. Zotsatirazi zikuwonetsa gawo losayembekezereka la majini omwe nthawi zambiri amagwirizanitsidwa ndi ntchito yoyambira ya maselo, kusonyeza kuti amathanso kukhudza makhalidwe ofunikira a kagayidwe kachakudya ka zipatso.
Anthocyanins ndi terpenoids amachita gawo lofunika kwambiri pa mtundu, kukoma, fungo, ndi thanzi la zipatso. Komabe, kuyesera kuwonjezera kuchuluka kwa mankhwala awa nthawi zambiri kumabweretsa zotsatira zoyipa. Izi zili choncho chifukwa kupanga kwawo kumagwirizana kwambiri ndi mahomoni a zomera. Mwachitsanzo, ma cytokinins amawongolera kukula kwa zomera komanso kagayidwe kachakudya kachiwiri, kotero kusintha milingo yawo kungasinthe kapangidwe ndi kukula kwa zomera.
Gulu lodziwika bwino la majini okhudzana ndi cytokinin—mtundu wa tRNA-isopentenyl transferases—silinasamalidwe kwambiri. Majini amenewa akuganiziridwa kuti amagwira ntchito za maselo nthawi zonse m'malo mowongolera makhalidwe a zomera. Ngati angathe kupititsa patsogolo ubwino wa zipatso popanda kusokoneza kukula kwa zomera sikukudziwikabe, zomwe zimapangitsa kuti akhale oyenera kufufuzidwa mozama.
Ofufuza ochokera ku Nanjing Agricultural University ndi ku University of Connecticut adasindikiza nkhani mu magazini ya *Horticultural Research*, akufufuza izi pogwiritsa ntchito sitiroberi zakuthengo monga chitsanzo. Adayang'ana kwambiri pa jini yosamalira nyumba yotchedwa FveIPT2. Mwa kusintha majini a zomera kuti awonjezere kuchuluka kwa jini iyi, adawona kusintha kwakukulu kwa mtundu wa zipatso.
Zomera zosinthika m'majini zinawonetsa kuchuluka kwa anthocyanins ndi terpenoids m'zipatso zokhwima poyerekeza ndi zomera zakuthengo, koma sizinawonetse kusiyana kulikonse pakukula, kukula kwa zipatso, kapena kuchuluka kwa shuga. Kupeza kumeneku kukutsutsa chikhulupiriro chomwe chakhalapo kwa nthawi yayitali chakuti majini osamalira m'nyumba amagwira ntchito yokha ndipo kukuwonetsa kuthekera kwawo kwakukulu kokonzanso mbewu.
Jini ya FveIPT2 imagwira ntchito pakusintha kwa tRNA ndipo imagwirizana ndi kupanga cis-zeatin (cytokinin). Mosiyana ndi majini ena okhudzana ndi cytokinin, omwe amakhudza kwambiri kukula kwa zomera, kuwonjezeka kwa ntchito ya FveIPT2 kumangoyambitsa kusintha pang'ono pa kuchuluka kwa cytokinin. Kukula kwa zomera kumachitika mwachibadwa, popanda zolakwika zilizonse zoonekeratu. Maluwa ndi zipatso zimachitika monga momwe zimayembekezeredwa, popanda kusintha kwa kulemera kwa zipatso, mawonekedwe, kapena kukoma.
Ngakhale kuti zomera zikukula bwino, kapangidwe ka mankhwala a zipatsozo kanasintha kwambiri. Kuchuluka kwa anthocyanins, flavonoids, ndi mankhwala a phenolic kunawonjezeka, zomwe zinapangitsa kuti mtundu wofiira ukhale wolimba kwambiri. Kusanthula mwatsatanetsatane kunawonetsa kuwonjezeka kwakukulu kwa kuchuluka kwa anthocyanins zisanu ndi zinayi, kuphatikizapo mankhwala ochokera ku cyanidin ndi pelargonidin, omwe amadziwika ndi mphamvu zawo zotsutsana ndi ma antioxidants.
Nthawi yomweyo, kuchuluka kwa pafupifupi theka la mankhwala a terpenoid omwe adapezeka kunawonjezeka. Mankhwala a terpenoid awa akuphatikizapo monoterpenes, sesquiterpenes, ndi triterpenes, omwe amagwira ntchito yofunika kwambiri pa fungo ndi kukoma.
Kusintha kumeneku sikungokhala kokha pa mitundu ndi zakudya zokha. Kuchuluka kwa mankhwala onunkhira okhudzana ndi fungo labwino la maluwa, monga linalool, kunawonjezeka. Mosiyana ndi zimenezi, kuchuluka kwa mankhwala okhudzana ndi fungo lopweteka komanso lonunkhira kunachepa. Kafukufuku wokhudza majini anatsimikizira kuti njira zazikulu zomwe zimayambitsa kupanga ndi kunyamula mankhwala amenewa zinayamba kugwira ntchito kwambiri.
Zotsatirazi zikusonyeza kuti FveIPT2 imatha kusintha kapangidwe ka zipatso popanda kusintha mahomoni komwe kumakhudza kukula.
Ofufuzawo anati, “Kafukufukuyu akusonyeza kuti zomwe timazitcha kuti ‘majini osamalira nyumba’ zimatha kukhala ndi zotsatirapo zodabwitsa komanso zofunika kwambiri. Mwa kuyang'ana majini amtundu wa tRNA m'malo moyang'anira mahomoni achikhalidwe, tinatha kusintha mtundu wa zipatso, kukoma, ndi kapangidwe ka zakudya popanda kukhudza kukula, pomwe ukadaulo wa kagayidwe kachakudya nthawi zambiri umakhala ndi zotsatirapo zoyipa pakukula. Zotsatirazi zikusonyeza kuti njira zazikulu zamaselo zimatha kukhudza bwino mtundu wa zipatso, kupatsa obereketsa zida zatsopano zomwe zili zothandiza komanso zofatsa.”
Zotsatira zake zikusonyeza kuti FveIPT2 ndi njira yabwino komanso yothandiza yowonjezerera ubwino wa zipatso za sitiroberi ndi mbewu zina zaulimi. Chifukwa njira iyi imawonjezera kuchuluka kwa utoto wopindulitsa ndi mankhwala onunkhira popanda kuchepetsa zokolola kapena kumera bwino kwa zomera, ndikofunikira kwambiri pakulima zinthu zaulimi zapamwamba.
Mwachidule, kafukufukuyu akutsutsa lingaliro lakuti majini osamalira nyumba amangogwira ntchito m'maselo wamba. Pozindikira momwe amakhudzira kagayidwe kachakudya kachiwiri, kafukufukuyu akupereka njira zatsopano zowonjezerera zokolola pamene akusunga ubwino.
Nkhaniyi yaperekedwa ndi Academy of Sciences of Nanjing Agricultural University. Dziwani: Zomwe zili mkati mwake zingafunike kusinthidwa chifukwa cha mawonekedwe ake komanso kutalika kwake.
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Nthawi yotumizira: Meyi-08-2026
