{"id":581,"date":"2016-07-24T02:18:51","date_gmt":"2016-07-23T19:18:51","guid":{"rendered":"http:\/\/antoansinhhoc.vn\/?p=581"},"modified":"2016-07-24T02:18:51","modified_gmt":"2016-07-23T19:18:51","slug":"bien-doi-gien-chien-luoc-lam-tang-dang-ke-kha-nang-chong-han-han-cua-cay-trong","status":"publish","type":"post","link":"https:\/\/nbca.gov.vn\/bien-doi-gien-chien-luoc-lam-tang-dang-ke-kha-nang-chong-han-han-cua-cay-trong\/","title":{"rendered":"Bi\u1ebfn \u0111\u1ed5i gien &#8211; Chi\u1ebfn l\u01b0\u1ee3c l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ed1ng h\u1ea1n h\u00e1n c\u1ee7a c\u00e2y tr\u1ed3ng"},"content":{"rendered":"<div class=\"TomTat clearfix\">\n<p>C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Purdue ph\u00e1t hi\u1ec7n ra r\u1eb1ng c\u00e1c c\u00e2y tr\u1ed3ng bi\u1ebfn \u0111\u1ed5i gien s\u1ea3n xu\u1ea5t l\u01b0\u1ee3ng l\u1edbn m\u1ed9t protein g\u1ecdi l\u00e0 PYL9 l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ecbu h\u1ea1n \u1edf l\u00faa v\u00e0 c\u00e1c c\u00e2y m\u00f4 h\u00ecnh Arabidopsis. Trong \u0111i\u1ec1u ki\u1ec7n h\u1ea1n h\u00e1n nghi\u00eam tr\u1ecdng, c\u00e2y bi\u1ebfn \u0111\u1ed5i gien s\u1ebd l\u00e0m c\u00e1c l\u00e1 gi\u00e0 ch\u1ebft \u0111i \u2013 \u0111\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a nh\u1eb1m b\u1ea3o t\u1ed3n ngu\u1ed3n l\u1ef1c cho h\u1ea1t v\u00e0 ch\u1ed3i.<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<div class=\"NoiDungBai\">\n<div>Nghi\u00ean c\u1ee9u n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u h\u01a1n \u0111\u1ed1i v\u1edbi c\u01a1 ch\u1ebf s\u1ed1ng s\u00f3t qua h\u1ea1n h\u00e1n c\u1ee7a th\u1ef1c v\u1eadt v\u00e0 \u0111\u01b0a ra c\u00e1ch th\u1ee9c c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 c\u00e2y tr\u1ed3ng kh\u1ecfi kh\u00f4 h\u1ea1n nghi\u00eam tr\u1ecdng.<\/div>\n<div><\/div>\n<div>Yang Zhao, t\u00e1c gi\u1ea3 \u0111\u1ea7u ti\u00ean c\u1ee7a nghi\u00ean c\u1ee9u trong ph\u00f2ng th\u00ed nghi\u1ec7m Jian-Kang Zhu t\u1ea1i C\u1ee5c tr\u1ed3ng tr\u1ecdt cho bi\u1ebft: \u201cNghi\u00ean c\u1ee9u n\u00e0y cho th\u1ea5y s\u1ef1 l\u00e3o h\u00f3a c\u00f3 ki\u1ec3m so\u00e1t l\u00e0 t\u1ed1t cho c\u00e1c c\u00e2y tr\u1ed3ng trong \u0111i\u1ec1u ki\u1ec7n h\u1ea1n h\u00e1n. S\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u00e1i ch\u1ebft v\u00e0 s\u1ef1 s\u1ed1ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c ph\u00e2n lo\u1ea1i. N\u1ebfu l\u00e1 gi\u00e0 ch\u1ebft, sau \u0111\u00f3 c\u00e1c ch\u1ed3i v\u00e0 l\u00e1 nh\u1ecf c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 s\u1ed1ng\u201d.<\/div>\n<div><\/div>\n<div>B\u1edfi v\u00ec c\u00e2y tr\u1ed3ng kh\u00f4ng th\u1ec3 ch\u1ea1y tr\u1ed1n kh\u1ecfi h\u1ea1n h\u00e1n, c\u00e2y ph\u1ea3i th\u1ef1c hi\u1ec7n m\u1ed9t lo\u1ea1t c\u00e1c chi\u1ebfn l\u01b0\u1ee3c t\u1ed3n t\u1ea1i trong khi ch\u1edd \u0111\u1ee3i \u0111i\u1ec1u ki\u1ec7n t\u1ed1t h\u01a1n. Ph\u1ea3n \u1ee9ng v\u1edbi h\u1ea1n h\u00e1n c\u1ee7a ch\u00fang \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u1edfi m\u1ed9t ho\u00f3c-m\u00f4n g\u1ecdi l\u00e0 axit abscisic (ABA) \u0111i\u1ec1u h\u00f2a s\u1ef1 t\u0103ng tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 ch\u1ec9 \u0111\u1ea1o ph\u1ea3n \u1ee9ng c\u1ee7a th\u1ef1c v\u1eadt v\u1edbi stress.<\/div>\n<div><\/div>\n<div>Ph\u1ea3n \u1ee9ng h\u1ea1n ng\u1eafn h\u1ea1n c\u1ee7a th\u1ef1c v\u1eadt trong \u0111i\u1ec1u ki\u1ec7n h\u1ea1n h\u00e1n bao g\u1ed3m \u0111\u00f3ng l\u1ed7 kh\u00ed kh\u1ed5ng v\u00e0 t\u1ea1o ra th\u00eam s\u00e1p \u0111\u1ec3 l\u01b0u gi\u1eef \u0111\u1ed9 \u1ea9m trong l\u00e1. T\u00ecnh tr\u1ea1ng h\u1ea1n h\u00e1n d\u00e0i h\u1ea1n chuy\u1ec3n n\u01b0\u1edbc v\u00e0 dinh d\u01b0\u1ee1ng t\u1eeb l\u00e1 v\u00e0o c\u00e1c m\u00f4 nh\u01b0 h\u1ea1t v\u00e0 ch\u1ed3i l\u00e0 c\u00e1c khu v\u1ef1c t\u1ea1o s\u1ef1 t\u0103ng tr\u01b0\u1edfng m\u1edbi.<\/div>\n<div><\/div>\n<div>Zhao v\u00e0 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u kh\u00e1c \u0111\u00e3 ph\u00e1t hi\u1ec7n r\u1eb1ng vi\u1ec7c bi\u1ebfn \u0111\u1ed5i gien c\u00e2y tr\u1ed3ng \u0111\u1ec3 c\u00f3 protein PYL9 l\u00e0m t\u0103ng \u0111\u1ed9 nh\u1ea1y c\u1ea3m v\u1edbi ABA. Nh\u1eefng thay \u0111\u1ed5i gien n\u00e0y k\u00edch ho\u1ea1t c\u00e2y Arabidopsis v\u00e0 c\u00e2y l\u00faa gi\u00fap c\u00e1c c\u00e2y n\u00e0y ch\u1ecbu \u0111\u1ef1ng \u0111\u01b0\u1ee3c t\u1ed1t h\u01a1n c\u00e1c \u0111i\u1ec1u ki\u1ec7n h\u1ea1n h\u00e1n nghi\u00eam tr\u1ecdng v\u00e0 khi\u1ebfn l\u00e1 gi\u00e0 chuy\u1ec3n sang m\u00e0u v\u00e0ng s\u1edbm h\u01a1n so v\u1edbi c\u00e1c c\u00e2y kh\u00e1c.<\/div>\n<div><\/div>\n<div>L\u00faa bi\u1ebfn \u0111\u1ed5i gien PYL9 c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng s\u00f3t 50% sau m\u1ed9t \u0111\u1ee3t h\u1ea1n h\u00e1n k\u00e9o d\u00e0i hai tu\u1ea7n so v\u1edbi t\u1ef7 l\u1ec7 s\u1ed1ng 10% c\u1ee7a c\u00e1c gi\u1ed1ng l\u00faa hoang d\u1ea1i. Tuy nhi\u00ean, Zhao c\u1ea3nh b\u00e1o s\u1ef1 t\u0103ng v\u1ecdt trong t\u1ef7 l\u1ec7 s\u1ed1ng kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 n\u0103ng su\u1ea5t c\u1ee7a c\u00e2y tr\u1ed3ng bi\u1ebfn \u0111\u1ed5i gien trong \u0111i\u1ec1u ki\u1ec7n h\u1ea1n h\u00e1n s\u1ebd b\u1eb1ng n\u0103ng su\u1ea5t c\u1ee7a c\u00e1c gi\u1ed1ng l\u00faa th\u00f4ng th\u01b0\u1eddng trong \u0111i\u1ec1u ki\u1ec7n ph\u00e1t tri\u1ec3n t\u1ed1t. Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u00e3 kh\u00f4ng xem x\u00e9t y\u1ebfu t\u1ed1 s\u1ea3n l\u01b0\u1ee3ng.<\/div>\n<div><\/div>\n<div>C\u00e1c gien kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e2y tr\u1ed3ng trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng, \u0111i\u1ec1u n\u00e0y cho th\u1ea5y r\u1eb1ng c\u00e1c gien n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ecbu h\u1ea1n c\u1ee7a c\u00e2y tr\u1ed3ng.<\/div>\n<div><\/div>\n<div>Jian-Kang Zhu, Gi\u00e1o s\u01b0 Sinh h\u1ecdc th\u1ef1c v\u1eadt v\u00e0 l\u00e0 t\u00e1c gi\u1ea3 ch\u00ednh c\u1ee7a nghi\u00ean c\u1ee9u cho bi\u1ebft: \u201cVi\u1ec7c t\u00ecm ra c\u00e1c ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3 c\u1ee7a protein PYL l\u00e0 kh\u00f4ng \u0111\u01a1n gi\u1ea3n. Nghi\u00ean c\u1ee9u n\u00e0y kh\u00f4ng ch\u1ec9 n\u00eau l\u00ean ch\u1ee9c n\u0103ng c\u1ee7a PYL9 trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u0103ng th\u1eb3ng m\u00e0 c\u00f2n th\u1ec3 hi\u1ec7n m\u1ed9t ti\u1ec1m n\u0103ng l\u1edbn cho vi\u1ec7c s\u1eed d\u1ee5ng PYL9 \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ecbu h\u1ea1n c\u1ee7a th\u1ef1c v\u1eadt\u201d.<\/div>\n<div><\/div>\n<div>Th\u1eadt b\u1ea5t ng\u1edd, trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng, \u1edf c\u00e2y bi\u1ebfn \u0111\u1ed5i gien, c\u00e1c l\u00e1 gi\u00e0 b\u1eaft \u0111\u1ea7u h\u00e9o r\u0169, m\u1eb7c d\u00f9 c\u00e2y tr\u1ed3ng \u0111\u00e3 nh\u1eadn \u0111\u1ee7 n\u01b0\u1edbc. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y r\u1eb1ng c\u00e2y tr\u1ed3ng \u0111\u00e3 ch\u1eb7n s\u1ef1 ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc c\u1ee7a c\u00e1c l\u00e1 gi\u00e0, \u01b0u ti\u00ean n\u01b0\u1edbc d\u00e0nh cho vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e1c m\u00f4 thay th\u1ebf.<\/div>\n<div><\/div>\n<div>Nh\u00f3m nghi\u00ean c\u1ee9u k\u1ebft lu\u1eadn r\u1eb1ng trong \u0111i\u1ec1u ki\u1ec7n h\u1ea1n h\u00e1n nghi\u00eam tr\u1ecdng, c\u00e2y bi\u1ebfn \u0111\u1ed5i gien t\u0103ng s\u1ef1 l\u00e3o h\u00f3a v\u00e0 th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh ch\u1ebft c\u1ee7a c\u00e1c l\u00e1 gi\u00e0 trong khi b\u1ea3o v\u1ec7 c\u00e1c m\u00f4 tr\u1ebb b\u1eb1ng c\u00e1ch l\u00e0m ch\u00fang r\u01a1i v\u00e0o qu\u00e1 tr\u00ecnh ng\u1ee7 \u0111\u00f4ng. Nghi\u00ean c\u1ee9u c\u0169ng cho th\u1ea5y r\u1eb1ng s\u1ef1 g\u00e2y l\u00e3o h\u00f3a \u0111\u00f3 l\u00e0 m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c ph\u00f2ng v\u1ec7 c\u00f3 l\u1ee3i trong h\u1ea1n h\u00e1n. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 trong K\u1ef7 y\u1ebfu c\u1ee7a Vi\u1ec7n h\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0o th\u1ee9 Hai ng\u00e0y 1\/2\/2016.<\/div>\n<div><\/div>\n<div>Theo phys.org<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Purdue ph\u00e1t hi\u1ec7n ra r\u1eb1ng c\u00e1c c\u00e2y tr\u1ed3ng bi\u1ebfn \u0111\u1ed5i gien s\u1ea3n xu\u1ea5t l\u01b0\u1ee3ng l\u1edbn m\u1ed9t protein g\u1ecdi l\u00e0 PYL9 l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ecbu h\u1ea1n \u1edf l\u00faa v\u00e0 c\u00e1c c\u00e2y m\u00f4 h\u00ecnh Arabidopsis. Trong \u0111i\u1ec1u ki\u1ec7n h\u1ea1n h\u00e1n nghi\u00eam tr\u1ecdng, c\u00e2y bi\u1ebfn \u0111\u1ed5i gien s\u1ebd [&#8230;]\n","protected":false},"author":1,"featured_media":584,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/581"}],"collection":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/comments?post=581"}],"version-history":[{"count":0,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/581\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media\/584"}],"wp:attachment":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media?parent=581"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/categories?post=581"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/tags?post=581"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}