Munguva ichangopfuura, Muzvinafundo Chunxiang You anobva kuShandong Agricultural University nevamwe vake vakaburitsa chinyorwa chekuongorora chakanzi "Kudzora kuibva kwemuchero wenyama: kubva kune zvinyorwa kusvika kune epigenetic modifications" Horticulture Research.
"Muongororo iyi, tinokurukura ruzivo rwezvino nezve zvinyorwa zvinyorwa iyo inodzora kuibva pamwe chete ne ethylene uye masaini ezvakatipoteredza (chiedza uye tembiricha) mumuenzaniso chirimwa madomasi (Solanum lycopersicum) nemimwe michero ine nyama. Isu tinosimbisa mabasa akakosha epigenetic regulation, "vanyori vanodaro.
Ethylene induces yakanyatso kurongeka yekusaina nzira inoronga kukura kwezvirimwa uye kusimukira uye kuibva kwemichero, uye humbowo hwakakura hunoratidza kuti ethylene, pamwe nemamwe mahormone echirimwa endogenous, anoshanda nemaTF ane hukama nekuibva kuti agadzirise kuibva kwemichero. Iri bepa rinoongorora mamolecular maitiro eTFs anodzora kuibva kwemichero mune ethylene-inotsamira uye/kana-yakazvimirira maitiro.
Tichitora matomatisi semuenzaniso, maTF akadai seNACs, NOR, MOR-like1, HB-1, WRKY1, GRAS4/38, ARF2A/2B, uye AREB inotungamira kutaura kweethylene uye magene ane hukama nekuibva nenzira inotsamira ethylene, nokudaro zvichigadzirisa kuibva kwemichero. Kuunganidzwa uye kuderedzwa kwe chlorophyll panguva yekuibva kwematomatisi kunodzorwa nemhando dzakasiyana dzeTF, kusanganisira GLK1/2, ARFs, uye TKN2/4, nenzira isina ethylene-yakasununguka, uye iyi nzira inogadziridzwa zvakare nekupindirana kwemahomoni uye masaini masaini. . MADS-box TFs (RIN, FUL1/2, TAGL1) uye ethylene inoumba dunhu rinotonga rinoronga kuibva kwemichero mu ethylene-inotsamira uye yakazvimirira nzira.
Zvidzidzo zvenguva pfupi yapfuura zvakaratidza kuti epigenetic modified inoitawo basa rakakosha mukuibva kwemichero. DNA methylation, histone methylation, uye acetylation ndiwo magadzirirwo makuru epigenetic anokanganisa kuibva kwemichero, pakati peiyo DNA methylation uye H3K27me3 histone methylation inodzvinyirira epigenetic mamaki. N6-methyladenosine (m6A) ndiyo yakanyanya kupararira mRNA shanduko mueukaryotes, uye zvidzidzo zvenguva pfupi yapfuura zvakaratidza a feedback loop pakati m6Kugadziriswa kwemRNA uye DNA methylation inogadzirisa kuibva kwemichero yemadomasi.
Mukupedzisa, vanyori vanoongorora muenzaniso wekushanda we phytohormones, kuibva-ane hukama neTF, uye epigenetic shanduko kune simba rekutonga kwekuibva kwemuchero wematomatisi, uyo, sekutaura kwevanyori, "inogona kushanda segwara kana uchidzidza nzira dzekudzora kuibva mune mamwe marudzi emichero," uye "kutungamira nzira nyowani dzekushandisa kwayo kunoshanda."
Kunobva: https://phys.org