Qhov zoo tshaj plaws cultivated nroj tsuag yog cua thiab high-yielding, raws li zoo raws li resistant rau kab mob thiab kab tsuag. Tab sis yog tias cov noob sib txuas nyob deb deb ntawm cov chromosome, qee qhov zoo ntawm cov txheej txheem no yuav poob rau hauv kev xaiv. Txhawm rau kom ntseeg tau tias tag nrho cov txiaj ntsig zoo raug xa mus ua ke, cov kws tshawb fawb ntawm Karlsruhe Institute of Technology (KIT) tau siv CRISPR / Cas molecular txiab los hloov thiab hloov caj ces deactivate cuaj kaum chromosomes ntawm Arabidopsis, ceeb toom. Phys.org portal. Cov yam ntxwv encoded nyob rau hauv ib feem ntawm cov chromosome ua "tsis pom" rau kev sib pauv caj ces thiab yog li tuaj yeem hloov pauv tsis tau.
Targeted editing, ntxig los yog tsuj noob Hauv cov nroj tsuag tuaj yeem siv CRISPR / Cas molecular txiab. Txoj kev no tuaj yeem siv los ua kom cov nroj tsuag tiv taus cov kab tsuag, kab mob lossis kev cuam tshuam ib puag ncig ib puag ncig.
"Nyob rau xyoo tas los no, thawj zaug, peb tuaj yeem siv CRISPR / Cas tsis yog tsuas yog kho cov noob, tab sis kuj hloov cov qauv ntawm chromosomes," said Prof. Holger Puchta, uas tau kawm cov noob txiab nrog nws pab neeg. ntawm Tuam Tshoj Botanical Institute rau 30 xyoo.
Tam sim no cov kws tshawb fawb tau muaj peev xwm tiv thaiv kev pauv caj ces, uas feem ntau yog ib feem ntawm cov txheej txheem keeb kwm yav dhau los, tab sis tuaj yeem cuam tshuam kev sib raug zoo ntawm tus cwj pwm. Txog rau tam sim no, yog tias cog cov yam ntxwv yuav tsum tau dhau los ua ke, cov noob rau cov cwj pwm no yuav tsum nyob ze ua ke ntawm tib chromosome. Yog tias cov noob no sib nrug ntxiv, lawv feem ntau sib cais thaum lub sijhawm ua qub txeeg qub teg, yog li qhov txiaj ntsig tseem ceeb yuav poob rau hauv txoj kev xaiv.
Hauv lawv cov kev tshawb fawb, cov kws tshawb fawb tau ua raws li qhov piv txwv ntawm xwm. "Inversions - ib yam ntawm caj ces tsis pom - kuj feem ntau tshwm sim ntawm me me hauv cov tsiaj qus thiab cog qoob loo. Peb tau kawm cov kev qhia ntawm ntuj, siv thiab nthuav peb txoj kev paub txog txheej txheem ntuj", hais tias Puchta.
Nyob rau hauv kev koom tes nrog Prof. Andreas Huben ntawm lub koom haum rau cog noob caj noob ces thiab Cultivated Plant Research. Leibniz (IPK) Puchta thiab nws pab neeg tau rov qab cuaj feem kaum ntawm cov chromosomes hauv cov qauv kab mob, Arabidopsis thaliana. Tsuas yog qhov kawg ntawm cov chromosomes tau cov noob khaws lawv cov thawj ntu. Puchta hais tias "Nrog cov tawg no, cov chromosome tuaj yeem xa mus rau lwm tiam neeg ib yam li lwm cov chromosomes thiab tsis ploj tag," Puchta hais.
Txhawm rau kom muaj txiaj ntsig zoo ntawm cov qoob loo ua liaj ua teb, nws yog ib qho tseem ceeb uas yuav tsum ua kom muaj ntau yam zoo li ua tau hauv ib tsob nroj. "Yog lawm, cov kws cog qoob loo xav kom lawv cov khoom noj qab haus huv, muaj cov vitamins ntau npaum li sai tau, thiab tiv taus kab mob. Nrog peb txoj kev, peb tuaj yeem ua qhov yooj yim no yav tom ntej, "Puchta hais.