Abashakashatsi bavumbuye uburyo ibimera bigenga poroteyine za DELLA

Abashakashatsi bo mu ishami ry’ibinyabuzima mu Ishuri Rikuru ry’Ubumenyi ry’Ubuhinde (IISc) bavumbuye uburyo bwashakishijwe kuva kera bwo kugenzura imikurire y’ibimera by’ubutaka bwa mbere nka bryofitike (itsinda ririmo mose hamwe n’umwijima) byagumishijwe mu bimera nyuma y’indabyo.
Ubushakashatsi bwasohotse mu kinyamakuru Nature Chemical Biology, bwibanze ku kugenga amategeko ya poroteyine ya DELLA idahwitse, igenga imikurire y’imyororokere ikumira igabana ry’uturemangingo (ibihingwa by’ubutaka).
Igishimishije, bryophytes, ibimera byambere byagaragaye kubutaka hashize imyaka miriyoni 500, ntibibura reseptor ya GID1 nubwo bitanga phytohormone GA. Ibi bitera kwibaza uburyo imikurire niterambere ryibi bimera byambere byateganijwe.
Bakoresheje umwijima witwa Marchantia polymorpha nka sisitemu y'icyitegererezo, abashakashatsi basanze ibyo bimera byambere bikoresha enzyme yihariye, MpVIH, ikora intumwa ya selile inositol pyrophosphate (InsP₈), ibemerera gusenya DELLA bidakenewe aside ya gibberellic.
Abashakashatsi basanze DELLA ari imwe mu ntego za selile ya VIH kinase. Byongeye kandi, babonye ko ibimera bidafite MpVIH bigana fenotipike y ibihingwa bya M. polymorpha bikabije DELLA.
Priyanshi Rana, umwanditsi wa mbere akaba n'umunyeshuri wahawe impamyabumenyi mu itsinda ry’ubushakashatsi bwa Lahey yagize ati: "Kugeza ubu, twashimishijwe no kumva niba umutekano wa DELLA cyangwa ibikorwa byiyongera mu bimera bidafite MpVIH". Bihuye na hypothesis yabo, abashakashatsi basanze kubuza DELLA byakijije cyane imikurire mibi niterambere ryiterambere ryibimera bya MpVIH. Ibisubizo byerekana ko VIH kinase igenga DELLA nabi, bityo igatera imbere gukura niterambere.
Ubushakashatsi kuri poroteyine za DELLA bwatangiriye kuri Green Revolution, igihe abahanga batabizi bakoresheje ubushobozi bwabo kugirango babone ubwoko butanga umusaruro mwinshi wa dwarf. Nubwo icyo gihe amakuru arambuye yukuntu atigeze asobanuka neza, tekinoroji igezweho ituma abahanga bakoresha imikorere yizo poroteyine binyuze mu buhanga bw’ingirabuzima fatizo, byongera umusaruro w’ibihingwa.
Kwiga ibihingwa byubutaka hakiri kare kandi bitanga ubwihindurize mumyaka 500 ishize. Kurugero, nubwo ibimera byindabyo bigezweho bihungabanya poroteyine za DELLA binyuze muri gibberellic aside-iterwa na aside, ibibanza bya InsP₈ birabikwa. Ibyavuye mu bushakashatsi bitanga ubushishozi bwihindagurika rya selile yerekana inzira mugihe.
Iyi ngingo yasubiwemo uhereye kumasoko akurikira. Icyitonderwa: Inyandiko irashobora guhindurwa kuburebure n'ibirimo. Kubindi bisobanuro, nyamuneka hamagara isoko. Politiki yo gutangaza amakuru murayisanga hano.