Ua hoʻomohala kahi hui o nā ʻepekema i kahi hui kemika hou e kāohi ana i ka photosynthesis i nā lau mea kanu: ke kāohi nei ia i ka hana o kahi paʻakikī protein e lawe i kekahi o nā hopena nui o ke kaʻina hana - ka decomposition o ka wai i oxygen. Hiki i kēia mea ke lilo i prototype o nā herbicides e hakakā ana i ka mauʻu, ʻoiai ʻaʻole ia e pōʻino i ke kanaka a me nā holoholona. ʻO nā hopena o ke aʻo ʻana, i kākoʻo ʻia e kahi haʻawina mai ka Russian Science Foundation (RNF), i paʻi ʻia ma ka puke moʻolelo Cells, hōʻike. Gazeta.ru.
ʻO Photosynthesis ke kaʻina hana e hoʻohui ai nā mea kanu i nā pūhui organik mai carbon dioxide a me ka wai. Hoʻokō ʻia me ke kōkua o ʻelua mau pūmua protein nui - photosystems 1 a me 2 (PS1 a me PS2), ʻo kēlā me kēia me kahi kikowaena pane, nā protein a me nā puaʻa e hoʻopuni ana. Ma lalo o ka hana a ka lā, ua hauʻoli ka chlorophyll i loko o ke kikowaena pane a hoʻololi i kāna mau electron i nā molekala ʻē aʻe i loko o ka photosystem. Hoʻopili ʻia nā hoʻololi electron ma hope o ka hōʻiliʻili ʻana o nā moleke ikaika kiʻekiʻe, e like me ATP, i komo i ka synthesis o nā pūhui organik. ʻO ka nele o nā electrons i waiho ʻia mai ka chlorophyll e uku ʻia e ka decomposition o nā molekele wai - ʻo ia i loko o kēia kaʻina e hoʻokuʻu ʻia ka oxygen ma ke ʻano he huahana.
ʻO nā kānaka ʻepekema mai ka Institute of Fundamental Biological Problems o ka Russian Academy of Science (Pushchino) me nā hoa hana mai ke Kulanui ʻo Gazi (Turkey) ua synthesized i kahi hui hou e pili ana i ke keleawe a me kahi ʻāpana organik e kāohi ana i ka photosynthesis i nā lau. No ka hoʻoholo ʻana i ka hopena o ka waiwai, ua hoʻokaʻawale nā mea kākau i nā membrane thylakoid i hoʻonui ʻia ma PS2 mai nā lau-nā hale i loko o nā chloroplasts-a hoʻohui i kahi hopena o ka hui hou i ka hopena o ka hoʻokuʻu ʻana. Ua loiloi ʻia ka hopena inhibitory e ka nui o ka hoʻokuʻu ʻana o ka oxygen ma muli o ka hoʻomālamalama ʻia - no ka laʻana, ua hoʻemi ʻia kona helu e 69%. Eia kekahi, ua aʻo ʻia ka hopena o ka waiwai e kekahi mau hopena ʻē aʻe e hōʻike ana i ka hana o PS2: no ka laʻana, ʻo ka hoʻohui ʻana o kahi mea paʻa i hōʻemi i ka luminescence o ka chlorophyll i ka wā photosynthesis. I ka manawa like, ʻaʻole i loli ka hopena o ka lāʻau lapaʻau me ka manawa, akā hilinaʻi wale ʻia ma kona ʻano.
Ua hōʻike ʻia ka emi ʻana o ka hoʻokuʻu ʻana o ka oxygen i ka hana ʻoi aku ka maikaʻi o ka ʻōnaehana kiʻi. Ua manaʻo ʻia ʻo ka pahuhopu nui o ka herbicide hou ke kikowaena hopena o ka paʻakikī protein: hoʻopaʻa ka mea i ke kumu PS2 a hoʻololi i kona ʻano. ʻO ka hopena, e like me ka poʻe ʻepekema, ua hoʻopau ʻia ke kaʻina hana o ka hoʻoili kālā ma waena o nā ʻāpana o ke kaulahao lawe electron.
Hiki ke hoʻohana ʻia ka mea paʻa i hoʻomohala ʻia i ka hana ʻana i kahi herbicide hou, e hoʻohana ʻia, no ka laʻana, i ka hakakā ʻana i nā mauhele ulu wikiwiki e kū nei ma mua o ka ulu ʻana o nā mea kanu. Ma muli o ka hana ʻana o ka hoʻoheheʻe wai i loko o ke keʻena mea kanu wale nō, ʻoi aku ka palekana o ka herbicide no nā kānaka a me nā holoholona.
"Ua hoʻomohala mākou i kahi hui e hoʻopau pono i nā ʻano mea kanu makemake ʻole, no laila e hoʻonui nui ai i nā hua kanu. Hiki i kēia mau ʻikepili ke lilo i kumu kumu no ka hoʻomohala ʻana i nā mea i kūpono i ka haʻahaʻa haʻahaʻa loa, "wahi a ka mea kākau mua o ka hana, ʻo Sergey Zharmukhamedov, Candidate of Biological Science, alakaʻi noiʻi ma ka Institute of Fundamental Biological Problems of the Russian. Ke Kulanui ʻepekema.
Eia kekahi, nā kānaka ʻepekema mai ka Institute of Molecular Biology and Biotechnology o ka National Academy of Science of Azerbaijan (Baku), ka Institute of Plant Physiology i kapa ʻia ma hope o K.A. Timiryazev (Moscow), King Saud University (Saudi Arabia) a me Moscow State University i kapa ʻia ma hope o M.V. Lomonosov (Moscow).