Anthu ndi tomato amabwera mosiyanasiyana komanso mosiyanasiyana. Zili choncho chifukwa munthu aliyense ali ndi mitundu yosiyanasiyana ya majini yomwe imakhudza mmene majini amagwirira ntchito. Kuphatikizidwa pamodzi, mitundu yaying'ono yamitundumitundu imapangitsa kukhala kovuta kuneneratu momwe masinthidwe ena angakhudzire munthu aliyense. Pulofesa wa Cold Spring Harbor Laboratory (CSHL) ndi Wofufuza wa Howard Hughes Medical Institute Zach Lippman adawonetsa momwe kusintha kwa ma genetic mu tomato kungakhudzire momwe masinthidwe ena amakhudzira mbewuyo. Iye akuyesetsa kuti athe kuneneratu zotsatira za masinthidwe amitundu yosiyanasiyana ya tomato.
Mitundu yosiyanasiyana ya masinthidwe imatha kukhudza kukula kwa tomato mosayembekezereka. Pachithunzichi, gawo loyamba likuwonetsa phwetekere wosasinthika (WT). Mzere wachiwiri ndi wachitatu ukuwonetsa tomato wokhala ndi masinthidwe amodzi m'chigawo cha olimbikitsa (R1 kapena R4) wa jini ya kukula kwa zipatso SlCV3. Kusintha kwamunthu payekha sikukhudza kukula kwa zipatso. Koma kuphatikiza kwa masinthidwe awiriwa (R1 + R4) kumabweretsa chipatso chokulirapo.
Pakafukufukuyu, Lippman ndi gulu lake adagwiritsa ntchito CRISPR, chida cholondola kwambiri komanso cholunjika chosinthira ma gene, pamitundu iwiri ya phwetekere yomwe imayang'anira kukula kwa zipatso, SlCV3 ndi SlWUS. Anapanga masinthidwe a tomato opitilira 60 pochotsa tiziduswa tating'ono ta DNA m'malo olimbikitsa, madera omwe ali pafupi ndi majini omwe amawongolera mawonekedwe awo. Nthawi zina, kusintha kwamtundu wina kumawonjezera kukula kwa tomato pang'ono. Mapeawiri ena a masinthidwe sanasinthe kukula kwa zipatso konse. Kaphatikizidwe kakang'ono ka synergistic kudapangitsa kuti zipatso ziwonjezeke mosayembekezereka. Lippman akuti: "Chopatulika chenicheni pa zonsezi pa kuswana mbewu ndizodziwikiratu. Ngati ndisintha ndondomekoyi, ndipeza izi. Chifukwa pali nyanja yamitundu ina yomwe chilengedwe chapeza pafupi ndi masinthidwe omwe mukupanga, komanso kumwazika m'ma genome, zambiri zomwe zitha kukhudza kusintha komwe mukupanga. ”
Mgwirizanowu wamitundu iwiri ya masinthidwe amatengera zotsatira za kusintha kumodzi komwe kumachitika mumitundu yosiyanasiyana. Zotsatira zake zimafanana ndi zomwe zimapezeka m'matenda ena aumunthu, pomwe anthu ena amatha kukhala ndi masinthidwe omwe analipo kale omwe amawateteza ku masinthidwe omwe amayambitsa matenda.
Lippman ndi gulu lake apitilizabe kuwerengera momwe masinthidwe amunthu ndi ophatikizana amakhudzira mbewu zina. Pakalipano, ayesa kuyanjana pakati pa masinthidwe aŵiri amunthu, koma majenomu ali ndi miyandamiyanda yosiyanasiyana. Lippman akuyembekeza kuphunzira momwe angayesedwe mokwanira kuti apangitse kuswana kukhala kodziwikiratu komanso kothandiza.
Kuti mudziwe zambiri:
Laborodi ya Cold Spring Harbor
www.cshl.edu