Mesotrione selective herbicide no ka pale ʻana i nā mea kanu

wehewehe huahana

ʻO ka Mesotrione kahi lāʻau lapaʻau hou e hoʻomohala ʻia ana no ka hoʻomalu ʻana ma mua a ma hope o ka puka ʻana o ka lau ākea a me ka mauʻu i ka maile (Zea mays).He lālā ia o ka ʻohana benzoylcyclohexane-1,3-dione o nā herbicides, i loaʻa kemika mai kahi phytotoxin maoli i loaʻa mai ka mea kanu bottlebrush Kaleponi, Callistemon citrinus.Hana ʻia ka pūhui ma ka hoʻokūkū hoʻokūkū o ka enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD), kahi ʻāpana o ke ala biochemical e hoʻohuli i ka tyrosine i plastoquinone a me alpha-tocopherol.ʻO ka Mesotrione he mea hoʻopaneʻe ikaika loa o ka HPPD mai Arabidopsis thaliana, me ka waiwai Ki o c 6-18 pM.Lawe koke ʻia ia e nā ʻano nahele ma hope o ka hoʻohana ʻana i nā lau, a māhele ʻia i loko o nā mea kanu e ka neʻe acropetal a me ka basipetal.Ua ʻae ʻia ka maile i ka mesotrione ma muli o ke koho ʻana i ka metabolism e ka mea kanu.ʻO ka lawe lohi ʻana o ka mesotrione, e pili ana i nā ʻano nahele hiki ke hoʻohana ʻia, hiki ke kōkua pū i kona pono ma ke ʻano he herbicide koho no ka hoʻohana ʻana i ka maile.Hāʻawi ka Mesotrione i ka mālama ʻana i nā mauhelehele ākea ākea, a hiki ke hoʻohana ʻia i nā papahana hoʻokele weeds i hoʻohui ʻia e pili ana i ka hoʻolālā hoʻokele weeds makemake ʻia e ka mea kanu.

Kāohi ka Mesotrione i ka enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD).He mea paakiki ikaika loa ia o ka HPPD ma na hoao hoao ana e hoohana ana i ka mea kanu Arabidopsis thaliana, me ka waiwai Ki ma kahi o 10 pM.I nā mea kanu, pono ka HPPD no ka biosynthesis o nā tocopherols a me ka plastoquinone, he mea nui ia i ka hana carotenoid.ʻO ke kaohi ʻana i ke ala e alakaʻi ai i ka bleaching o nā lau i ka wā e hoʻohaʻahaʻa ʻia ai ka chlorophyll, a ma hope o ka make ʻana o nā mea kanu.

ʻO ka Mesotrione kahi lāʻau lapaʻau ma mua a ma hope o ka puka ʻana no ka hoʻopili koho ʻana a me ke koena o ka hoʻomalu ʻana i nā lau ākea ma ka māla palaoa, ka hua palaoa, ka popcorn melemele a me ke kulina momona.