Ua loaʻa i kahi hui noiʻi i alakaʻi ʻia e RIKEN i kahi ʻike e hiki ke hoʻohana ʻia no ka hoʻomaikaʻi ʻana i ka ʻai meaʻai.Pili ka mea lawe i ke au i lalo o nā aʻa mea kanu ma muli o ka umekaumaha.Ua kapa ʻia kēia ʻano he root geotropism1.googletag.cmd.push(hana(){googletag.display('div-gpt-ad-1449240174198-2′);});
ʻO Charles Darwin kekahi o nā kānaka ʻepekema mua i aʻo i ka ʻumekaumaha o nā aʻa mea kanu.Ma o nā hoʻokolohua maʻalahi akā nani, ua hōʻoia ʻo Darwin e hiki i nā kumu aʻa o nā mea kanu ke ʻike i ka ʻumekaumaha, a hiki iā lākou ke hoʻouna i nā hōʻailona i nā ʻiʻo kokoke, a laila e kulou ana nā aʻa i ka ʻumekaumaha.Ua ʻike mākou i kēia manawa he mea nui ka hormone mea kanu auxin i kēia pane ʻumekaumaha.
He nui nā hana physiological i nā hormones kanu a hiki ke kōkua i nā mea kanu e pale i nā loli kaiapuni.I mea e hana pono ai, pono e hoʻolālā pololei ʻia kā lākou mahele a me ka hana i loko o nā cell a me nā ʻiʻo.Hoʻopili maʻamau kēia i nā mea lawe e hoʻopili i ka lawe ʻana a i ʻole ka lawe ʻana aku i nā hormones a i ʻole nā ​​​​mea mua.
I kēia manawa, ua hōʻike nā mea olaola RIKEN e hiki i ka transporter i hōʻike mua ʻia ʻo NPF7.3 ke hoʻoponopono i ka pane auxin a me ka umekaumaha aʻa i ka mea kanu kumu hoʻohālike Arabidopsis.
Ua ʻōlelo ʻo Mitsunori Seo o ka RIKEN Sustainable Resources Science Center: "Ua ʻike mākou ua hōʻike ʻia nā mea kanu me ka hoʻololi ʻana i ka gene encoding NPF7.3 i ka ulu ʻana o ke aʻa maʻamau.""Ua hōʻike ʻia kahi nānā kokoke i kahi hemahema i ka pane gravity, e like me ka mea i hōʻike mua ʻia.ʻAʻole hiki ke wehewehe ʻia ka hana o NPF7.3 ma ke ʻano he mea lawe nitrate a me ka potassium.ʻO kēia ka mea e manaʻo ai mākou e loaʻa paha i ka protein nā hana ʻē aʻe i ʻike ʻole ʻia ma mua. "
Ua hōʻike ʻia nā hoʻokolohua ma hope e hana ʻo NPF7.3 ma ke ʻano he transporter o ka indole-3-butyric acid (IBA), a ʻo ka IBA i hoʻomoʻa ʻia e nā pūnaewele aʻa kikoʻī ma o NPF7.3 ua hoʻololi ʻia i indole-3-acetic acid (IAA), ʻo ia ka kumu kuloko Source auxin.E kōkua ana kēia i ka hoʻokumu ʻana i kahi gradient auxin i loko o ka ʻiʻo aʻa, kahi e alakaʻi ai i ka pane ʻumekaumaha.
ʻO ka IBA ka mea mua o ka IAA, a ʻaʻole i ʻike mua ʻia ke kuleana o ka IAA i loaʻa i ka IBA i ka neʻe ʻumekaumaha.Eia nō naʻe, me he mea lā ua loaʻa i nā mea kanu ʻē aʻe (me nā ʻano mea kanu) nā ʻano hoʻoponopono like, hiki ke alakaʻi i nā noi mahiʻai a me nā horticultural.
Ua ʻōlelo ʻo Seo: "E hiki iā mākou ke hoʻololi i ke ʻano o ka ʻōnaehana kumu ma o ka hoʻoponopono ʻana i ka hoʻoili IBA.""E hoʻomaikaʻi kēia i ka lawe ʻana i ka wai a me nā meaʻai e ka ʻōnaehana kumu, e hoʻoikaika ai i ka hoʻoulu ʻana i nā mea kanu."
Ua ʻike mua ʻia nā protein NPF ma ke ʻano he nitrate a i ʻole nā ​​​​mea lawe peptide, akā maopopo ia he ʻoi aku ka maʻalahi ma mua o ka mea i manaʻo mua ʻia.Ua wehewehe ʻo Seo: "Ua hōʻike ʻia nā haʻawina hou, me kēia, hiki i kēia ʻohana transporter ke hoʻopuka i nā ʻano mea like ʻole, me nā hormones mea kanu a me nā metabolites lua.""ʻO ka nīnau nui aʻe, makemake mākou e ʻike pehea e ʻike ai ka protein NPF i kēia.Nui nā substrates.
Hiki iā ʻoe ke hōʻoluʻolu e nānā pono kā mākou mea hoʻoponopono i kēlā me kēia manaʻo i hoʻouna ʻia a e hana i nā hana kūpono.He mea nui kou manaʻo iā mākou.
Hoʻohana wale ʻia kāu leka uila e hōʻike i ka mea nāna i hoʻouna i ka leka uila.ʻAʻole hoʻohana ʻia kāu helu wahi a i ʻole ka helu o ka mea i loaʻa no kekahi kumu ʻē aʻe.E ʻike ʻia ka ʻike āu e hoʻokomo ai ma kāu leka uila, akā ʻaʻole mālama ʻo Phys.org iā lākou ma kekahi ʻano.
E kiʻi i nā mea hou i kēlā me kēia pule a/a i kēlā me kēia lā i hoʻouna ʻia i kāu pahu leka uila.Hiki iā ʻoe ke wehe i ka inoa i kēlā me kēia manawa, a ʻaʻole mākou e kaʻana like i kāu mau kikoʻī me nā ʻaoʻao ʻekolu.
Ke hoʻohana nei kēia pūnaewele i nā kuki e kōkua i ka hoʻokele ʻana, e nānā i kāu hoʻohana ʻana i kā mākou lawelawe a hāʻawi i nā ʻike mai nā ʻaoʻao ʻekolu.Ma ka hoʻohana ʻana i kā mākou pūnaewele, hōʻoia ʻoe ua heluhelu a hoʻomaopopo ʻoe i kā mākou kulekele pilikino a me nā ʻōlelo hoʻohana.