Mesotrione herbicide-doorasho ee ilaalinta dalagga

Sharaxaada badeecada

Mesotrione waa dhir-direyaal cusub oo loo sameeyay xakamaynta xulashada ka hor iyo ka dib ee ah noocyo badan oo caleen ballaadhan iyo caws caws galley ah (Zea mays).Waa xubin ka mid ah qoyska benzoylcyclohexane-1,3-dione ee herbicides, kuwaas oo kiimiko ahaan laga soo qaatay phytotoxin dabiici ah oo laga helay warshadda dhalada California, Callistemon citrinus.Qalabku wuxuu u shaqeeyaa xakameyn tartan ah ee enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD), oo ah qayb ka mid ah dariiqa biochemical ee u beddelaya tyrosine ilaa plastoquinone iyo alfa-tocopherol.Mesotrione waa horjooge aad u xoog badan oo HPPD ah oo ka yimaada Arabidopsis thaliana, oo leh Ki qiimihiisu c 6-18 pM.Waxaa si degdeg ah u qaada noocyada haramaha ka dib codsiga foliar, waxaana lagu qaybiyaa dhirta dhexdeeda dhaqdhaqaaqa acropetal iyo basipetal labadaba.Galleydu waxay u dulqaadanaysaa mesotrione taasoo ka dhalatay dheef-shiid kiimikaad xulashada ee warshadda dalagga.Qaadashada qunyar socodka ah ee mesotrione, marka loo eego noocyada haramaha u nugul, ayaa sidoo kale laga yaabaa inay gacan ka geysato u adeegsigeeda sidii geedo yaryar oo door ah oo loogu isticmaalo galleyda.Mesotrione waxay bixisaa xakamaynta haramaha caleen-ballaaran ee waaweyn, waxaana loo isticmaali karaa barnaamijyada maaraynta haramaha isku dhafan iyadoo ku xidhan istiraatijiyadda xakamaynta haramaha ee uu doorbido beeralayda.

Mesotrione waxay joojisaa enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD).Waa ka hortag aad u xoog badan oo HPPD ah marka la eego shaybaadhka shaybaarka iyadoo la isticmaalayo geedka Arabidopsis thaliana, oo leh Ki qiimihiisu yahay 10 pM.Dhirta, HPPD waxay lagama maarmaan u tahay biosynthesis ee tocopherols iyo plastoquinone, taas oo lagama maarmaan u ah soosaarka carotenoid.Joojinta dariiqa ayaa ugu dambeyntii keenta caleemaha bleaching maadaama chlorophyll ay hoos u dhacday, oo ay ku xigto dhimashada dhirta.

Mesotrione waa herbicide ka hor iyo ka dib soo bixitaanka herbicide ee xiriirka xulashada iyo xakamaynta hadhaaga haramaha caleenta galleyda, galleyda abuurka, salool huruud ah iyo galley macaan.