Mesotrione yatoranije ibyatsi byo kurinda ibihingwa

Ibisobanuro ku bicuruzwa

Mesotrione ni icyatsi gishya kirimo gutegurwa hagamijwe guhitamo mbere na nyuma yo kuvuka hagamijwe kurwanya ibyatsi byinshi by’ibabi n’ibyatsi mu bigori (Zea mays).Ni umwe mu bagize umuryango wa benzoylcyclohexane-1,3-dione y’ibyatsi biva mu bimera, biva mu buryo bwa shimi biva muri phytotoxine isanzwe yabonetse mu ruganda rw’amacupa rwo muri Californiya, Callistemon citrinus.Uru ruganda rukora muburyo bwo guhatanira enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD), igice cyinzira ya biohimiki ihindura tyrosine na plastoquinone na alpha-tocopherol.Mesotrione ninzitizi ikomeye ya HPPD kuva Arabidopsis thaliana, ifite agaciro ka Ki c 6-18 pM.Ifatwa vuba nubwoko bwibyatsi nyuma yo gukoresha amababi, kandi bigakwirakwizwa mubihingwa byombi na acropetal na basipetal.Ibigori byihanganira mesotrione nkingaruka zo guhinduranya metabolisme nigihingwa cyibihingwa.Gufata gahoro gahoro ya mesotrione, ugereranije nubwoko bworoshye bwatsi, birashobora kandi kugira uruhare mubikorwa byayo nkibimera byatoranijwe kugirango bikoreshwe mu bigori.Mesotrione itanga uburyo bwo kurwanya nyakatsi nini nini-yamababi, kandi irashobora gukoreshwa muri gahunda yo kurwanya nyakatsi bitewe nuburyo abahinzi bahitamo kurwanya nyakatsi.

Mesotrione ibuza enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD).Ninzitizi ikomeye cyane ya HPPD mubizamini bya laboratoire ukoresheje igihingwa Arabidopsis thaliana, gifite agaciro ka Ki kangana na 10 pM.Mu bimera, HPPD irakenewe kugirango biosynthesis ya tocopherol na plastoquinone, ari ngombwa mu musaruro wa karotenoide.Inhibiton yinzira amaherezo iganisha kumababi yamababi kuko chlorophyll yangiritse, hagakurikiraho gupfa.

Mesotrione ni ibyatsi mbere na nyuma yo kuvuka ibyatsi biva muburyo bwo guhitamo no kugenzura ibyatsi bibi bigari mu bigori byo mu murima, ibigori by'imbuto, popcorn y'umuhondo n'ibigori byiza.