Ukuvula Amandla Okugcina Amazambane: Indlela Ukusebenzisana kwe-StSN2-StBIN2 Okungaguqula Ngayo Ukulawulwa Kokungalali

Embonini yamazambane, ukuphatha ukungavuki kwezitshalo kubalulekile ekugcineni ikhwalithi kanye nobude besikhathi samazambane agciniwe. Ukungavuki, isigaba semvelo esibambezela ukuhluma ngemva kokuvuna, kubalulekile ekugcineni imbewu iphila kahle futhi kuqinisekiswe ukuthi amazambane ahlala ekulungele imakethe. Kodwa-ke, ukuhluma ngaphambi kwesikhathi kusalokhu kuyinselele enkulu, okubangela ukulahlekelwa ngemva kokuvuna okuthinta abalimi nabakhiqizi emhlabeni jikelele.

Ucwaningo lwakamuva oluvela eSichuan Agricultural University, olushicilelwe ku- Ucwaningo Lwezolimo ngomhlaka-8 Novemba 2023, kukhanyisa okusha ngezinqubo zama-molecule ngemuva kokungalali. Kuholwa nguDkt. Xiyao Wang, ucwaningo lwethimba lugxile ekusebenzisaneni phakathi kwamaprotheni amabili, i-StSN2 ne-StBIN2, kanye nendima yawo ekwandiseni ukungalali kwe-tuber yamazambane. Lokhu okutholakele kungaholela emasu okugcina amasha kanye, mhlawumbe, ukuthuthukiswa kwezakhi zofuzo ukuze kube nokuqina okungcono kokugcina.

Indima ye-StSN2 kanye ne-StBIN2 ekuLawuleni Ukungalali

Nakuba ucwaningo lwangaphambilini luthole izakhi zofuzo ezibalulekile ezithonya ukungalali, izindlela eziyinkimbinkimbi zama-molecule azikatholakali. Lolu cwaningo lujula kakhulu, lubonisa ukuthi ukusebenzisana phakathi kwe-StSN2 ne-StBIN2 kuthinta ngqo ukungalali kwe-tuber ngokulawula izindlela ezibalulekile zama-hormone.

• Uhlolojikelele lwe-Mechanism
  Ucwaningo lubonisa ukuthi i-StSN2, iphrotheni ehlobene nokungalali, ixhumana ngqo ne-StBIN2, iphrotheni elawula ukusayinwa kwe-brassinosteroid (BR), indlela ye-hormone yesitshalo eyaziwa ngokuthonya ukukhula nentuthuko. Ngokusebenzisa izivivinyo ezifana nokuhlolwa kwe-yeast two-hybrid kanye nokuhlanganiswa kwe-luciferase, abacwaningi baqinisekisile ukuthi i-StSN2 ikhulisa ukubonakaliswa kanye nomsebenzi we-StBIN2, ithinta ukungalali ngokulawulwa kwama-hormone.
• Ukulawulwa Kwendlela Yama-Hormonal
  Emazambaneni, ama-hormone ezitshalo i-abscisic acid (ABA) kanye ne-brassinosteroids (BRs) abalulekile ekugcineni i-dormancy. I-StSN2 kanye ne-StBIN2 zilawula i-ABA signaling, okusiza ukwandisa i-dormancy ngokusebenzisa izakhi zofuzo ze-SnRK2.2/2.3/2.6 kanye ne-ABI5, zinciphisa inqubo yokuhluma. Ngesikhathi esifanayo, zivimbela i-BR signaling ngokucindezela umsebenzi we-StBZR1, umlawuli we-BR-signaling okhuthaza ukukhula. Ngokuthuthukisa i-ABA kanye nokunciphisa umsebenzi we-BR, lawa maprotheni ndawonye adala ibhalansi yama-hormone eyandisa i-dormancy.
• Amathuba Okugcina Isitoreji Okuthuthukisiwe
  Imiphumela yocwaningo ikhombisile ukuthi amazambane anamaprotheni e-StSN2 kanye ne-StBIN2 agcwele kakhulu ayenesikhathi eside sokulala. Ukuhlolwa kwe-Mutagenesis nakho kukhombe izinsalela ezithile ze-cysteine ​​​​ngaphakathi kwe-StBIN2 ezibalulekile ekusebenzisaneni kwayo ne-StSN2, okunikeza umgomo ongaba khona wokuphathwa kwezakhi zofuzo esikhathini esizayo.

Izicelo Eziwusizo Zokugcina Amazambane Nokuphathwa Kwezitshalo

Okutholakele kulolu cwaningo kunikeza imiphumela ewusizo kwezolimo, ikakhulukazi ekuphatheni ukugcinwa kwamazambane. Njengoba benekhono lokwandisa isikhathi sokulala ngokulawulwa kokusebenzisana kwe-StSN2-StBIN2, abalimi nabaphathi bezindawo zokugcina bangafinyelela ukulawula okungcono kokuhluma, okungenzeka kunciphise isidingo sezithiyo zamakhemikhali zokuhluma.

• Izinzuzo Zesitoreji
  Ukungavuki isikhathi eside kungasho ukuthi amazambane ahlala ephila isikhathi eside egcinweni isikhathi eside, kunciphisa ukulahlekelwa ngemva kokuvuna futhi kuthuthukise ukusebenza kahle kochungechunge lokuhlinzeka. Ezindaweni lapho ukuhluma kwasekuqaleni kuholela ekulahlekelweni okukhulu, le ndlela ingaba nomthelela omkhulu kwezomnotho. Ukulahlekelwa okujwayelekile kokugcinwa kwamazambane ngenxa yokuhluma eNyakatho Melika kuphela kulinganiselwa ku-$150 million ngonyaka, izindleko ezingancishiswa ngokulawulwa okungcono kokungavuki.
• Amandla Okuzala Esikhathini Esizayo
  Ukuqonda okuvela kulolu cwaningo kuvula neminyango yezinhlelo zokuzalanisa ezigxile ekuqineni kwesitoreji. Ngokugxila ezindleleni ezithile ezingemuva kokungalali, abafuyi bangakha izinhlobo zamazambane ezigcina ikhwalithi ngokwemvelo isikhathi eside, okuzenza ziqine kakhulu lapho zigcinwa ngaphandle kokwelashwa ngamakhemikhali.

Ukutholakala kokuxhumana kwamaprotheni e-StSN2 kanye ne-StBIN2 kunikeza ukuqonda okubalulekile ngokulawulwa kwezakhi zofuzo kanye nama-hormone kokungadli kahle kwamazambane, okuphawula intuthuko enkulu kwisayensi yokugcina. Ngokusebenzisa lezi zindlela zama-molecule, imboni yamazambane inamathuba amasha okuthuthukisa ukuqina kwesitoreji, ukunciphisa ukulahlekelwa okuvela ekuhlumeni, futhi mhlawumbe nokuthuthukisa izinhlobo zamazambane ezintsha, ezikwazi ukumelana nesitoreji. Lolu cwaningo lugcizelela indima ebalulekile yocwaningo lwama-molecule ekuxazululeni izinselele zangempela zezolimo futhi luqokomisa izinzuzo ezingaba khona zokuhlanganisa izindlela zofuzo ekuphathweni kwezitshalo kanye nemikhuba yokugcina.