{"id":6674,"date":"2014-08-01T10:02:47","date_gmt":"2014-08-01T03:02:47","guid":{"rendered":"http:\/\/antoansinhhoc.vn\/?p=1703"},"modified":"2014-08-01T10:02:47","modified_gmt":"2014-08-01T03:02:47","slug":"phat-hien-ra-mot-gien-giup-lai-tao-cac-giong-cay-trong-thich-nghi-voi-bien-doi-khi-hau","status":"publish","type":"post","link":"https:\/\/nbca.gov.vn\/phat-hien-ra-mot-gien-giup-lai-tao-cac-giong-cay-trong-thich-nghi-voi-bien-doi-khi-hau\/","title":{"rendered":"Ph\u00e1t hi\u1ec7n ra m\u1ed9t gien gi\u00fap lai t\u1ea1o c\u00e1c gi\u1ed1ng c\u00e2y tr\u1ed3ng th\u00edch nghi v\u1edbi bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu"},"content":{"rendered":"
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C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 x\u00e1c nh\u1eadn ch\u1ee9c n\u0103ng c\u1ee7a m\u1ed9t gen ki\u1ec3m so\u00e1t s\u1ef1 th\u1ee9c t\u1ec9nh c\u1ee7a c\u00e2y sau tr\u1ea1ng th\u00e1i ng\u1ee7 \u0111\u00f4ng, m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111i\u1ec1u ch\u1ec9nh s\u1ef1 th\u00edch nghi c\u1ee7a c\u00e2y tr\u01b0\u1edbc nh\u1eefng thay \u0111\u1ed5i m\u00f4i tr\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu.<\/span>\u0110\u0103ng ng\u00e0y 01-08-2014<\/span> trong chuy\u00ean m\u1ee5c Tin th\u1ebf gi\u1edbi<\/a><\/p>\n<\/div>\n

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Trong khi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u kh\u00e1c \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c gien li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1ea3n sinh nh\u1eefng chi\u1ebfc l\u00e1 xanh \u0111\u1ea7u ti\u00ean c\u1ee7a m\u00f9a xu\u00e2n, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Oregon v\u00e0 \u0110\u1ea1i h\u1ecdc Michigan, M\u1ef9 \u0111\u00e3 ph\u00e1t hi\u1ec7n ra gien \u1edf c\u00e2y d\u01b0\u01a1ng (thu\u1ed9c lo\u00e0i Populus) c\u00f3 th\u1ec3 gi\u00fap lai t\u1ea1o c\u00e1c gi\u1ed1ng c\u00e2y tr\u1ed3ng th\u00edch nghi t\u1ed1t h\u01a1n v\u1edbi kh\u00ed h\u1eadu \u1ea5m \u00e1p h\u01a1n.<\/p>\n

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Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u t\u1eeb h\u01a1n m\u1ed9t th\u1eadp k\u1ef7 tr\u01b0\u1edbc \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 trong K\u1ef7 y\u1ebfu c\u1ee7a Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc. Steve Strauss, \u0111\u1ed3ng t\u00e1c gi\u1ea3 c\u1ee7a nghi\u00ean c\u1ee9u v\u00e0 l\u00e0 gi\u00e1o s\u01b0 v\u1ec1 c\u00f4ng ngh\u1ec7 sinh h\u1ecdc r\u1eebng t\u1ea1i \u0110\u1ea1i h\u1ecdc bang Oregon cho bi\u1ebft: \u201cTr\u01b0\u1edbc \u0111\u00e2y, c\u00e1c nh\u00e0 khoa h\u1ecdc ch\u01b0a th\u1ec3 ph\u00e2n l\u1eadp \u0111\u01b0\u1ee3c gien ki\u1ec3m so\u00e1t th\u1eddi gian ngh\u1ec9 c\u1ee7a ch\u1ed3i c\u00e2y \u1edf c\u00e1c lo\u00e0i th\u1ef1c v\u1eadt hoang d\u00e3. \u0110\u00e2y l\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean m\u1ed9t gien lo\u1ea1i n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh\u201d.
\nC\u00e1c m\u00f4 h\u00ecnh kh\u00ed h\u1eadu cho th\u1ea5y s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 v\u00e0 l\u01b0\u1ee3ng m\u01b0a \u1edf nhi\u1ec1u n\u01a1i tr\u00ean th\u1ebf gi\u1edbi c\u00f3 th\u1ec3 t\u00e1c \u0111\u1ed9ng m\u1ea1nh m\u1ebd \u0111\u1ebfn s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y tr\u1ed3ng trong t\u01b0\u01a1ng lai. C\u00e1c chuy\u00ean gia cho r\u1eb1ng m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y c\u00f3 th\u1ec3 kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ed1i ph\u00f3 v\u1edbi nh\u1eefng thay \u0111\u1ed5i nhanh c\u1ee7a kh\u00ed h\u1eadu. K\u1ebft qu\u1ea3 l\u00e0 c\u00e1c khu r\u1eebng c\u00f3 th\u1ec3 suy gi\u1ea3m, c\u00e1c lo\u00e0i c\u00e2y c\u00f3 th\u1ec3 bi\u1ebfn m\u1ea5t kh\u1ecfi c\u00e1c m\u00f4i tr\u01b0\u1eddng s\u1ed1ng quen thu\u1ed9c v\u00e0 m\u1ed9t s\u1ed1 lo\u00e0i th\u1eadm ch\u00ed c\u00f3 th\u1ec3 b\u1ecb tuy\u1ec7t ch\u1ee7ng.<\/div>\n
Gien ki\u1ec3m so\u00e1t qu\u00e1 tr\u00ecnh \u0111\u00e2m ch\u1ed3i n\u1ea3y l\u1ed9c \u1edf c\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 gien EBB1. Gien n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 khoa h\u1ecdc n\u00e2ng cao kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng c\u1ee7a c\u00e2y tr\u1ed3ng trong t\u01b0\u01a1ng lai. Yordan Yordanov v\u00e0 Victor Busov t\u1ea1i Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Michigan \u0111\u00e3 ph\u1ed1i h\u1ee3p v\u1edbi Cathleen Ma v\u00e0 Strauss t\u1ea1i bang Oregon theo d\u00f5i c\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a gien EBB1 trong ch\u1ed3i v\u00e0 c\u00e1c m\u00f4 th\u1ef1c v\u1eadt kh\u00e1c trong vi\u1ec7c s\u1ea3n sinh ra c\u00e1c ch\u1ed3i xanh \u0111\u1ea7u ti\u00ean c\u1ee7a m\u00f9a xu\u00e2n. H\u1ecd \u0111\u00e3 lai t\u1ea1o c\u00e1c c\u00e2y bi\u1ebfn \u0111\u1ed5i gien c\u00f3 nhi\u1ec1u gien EBB1. C\u00e1c c\u00e2y n\u00e0y c\u00f3 qu\u00e1 tr\u00ecnh \u0111\u00e2m ch\u1ed3i n\u1ea3y l\u1ed9c s\u1edbm h\u01a1n so v\u1edbi c\u00e1c c\u00e2y tr\u1ed3ng kh\u00e1c. S\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a EBB1 trong l\u1edbp t\u1ebf b\u00e0o c\u1ee5 th\u1ec3 cho ph\u00e9p k\u00edch ho\u1ea1t s\u1ef1 t\u0103ng tr\u01b0\u1edfng trong c\u00e1c t\u1ebf b\u00e0o ph\u00e1t tri\u1ec3n th\u00e0nh ch\u1ed3i v\u00e0 l\u00e1 v\u00e0 t\u00e1i nh\u1eadp v\u00e0o giai \u0111o\u1ea1n t\u0103ng tr\u01b0\u1edfng t\u00edch c\u1ef1c c\u1ee7a c\u00e2y.<\/div>\n
Nghi\u00ean c\u1ee9u b\u1eaft \u0111\u1ea7u khi Strauss nh\u1eadn th\u1ea5y c\u00e2y d\u01b0\u01a1ng \u0111\u00e2m ch\u1ed3i n\u1ea3y l\u1ed9c s\u1edbm h\u01a1n so v\u1edbi nh\u1eefng c\u00e2y kh\u00e1c trong m\u1ed9t th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh t\u1ea1i bang Oregon. V\u00e0o m\u1ed9t bu\u1ed5i s\u00e1ng th\u00e1ng T\u01b0, \u00f4ng nh\u1eadn th\u1ea5y r\u1eb1ng b\u1ed1n c\u00e2y gi\u1ed1ng \u0111\u01b0\u1ee3c tr\u1ed3ng th\u1eed nghi\u1ec7m tr\u00ean di\u1ec7n t\u00edch 2,5 m\u1eabu Anh \u0111\u00e3 ra l\u00e1 s\u1edbm \u00edt nh\u1ea5t m\u1ed9t tu\u1ea7n so v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i c\u00e2y kh\u00e1c. H\u1ecd nh\u1eadn th\u1ea5y r\u1eb1ng gien EBB1 m\u00e3 h\u00f3a m\u1ed9t lo\u1ea1i protein gi\u00fap kh\u1edfi \u0111\u1ed9ng l\u1ea1i s\u1ef1 ph\u00e2n chia t\u1ebf b\u00e0o t\u1ea1i m\u1ed9t b\u1ed9 ph\u1eadn c\u1ee7a c\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u00f4 ph\u00e2n sinh t\u01b0\u01a1ng t\u1ef1 nh\u01b0 t\u1ebf b\u00e0o g\u1ed1c \u1edf \u0111\u1ed9ng v\u1eadt. EBB1 c\u0169ng \u0111\u00f3ng vai tr\u00f2 \u1ee9c ch\u1ebf c\u00e1c gien \u1edf c\u00e2y chu\u1ea9n b\u1ecb cho qu\u00e1 tr\u00ecnh ng\u1ee7 v\u00e0o m\u00f9a thu v\u00e0 trong c\u00e1c qu\u00e1 tr\u00ecnh kh\u00e1c nh\u01b0 chu k\u1ef3 dinh d\u01b0\u1ee1ng v\u00e0 t\u0103ng tr\u01b0\u1edfng g\u1ed1c v\u1ed1n r\u1ea5t quan tr\u1ecdng cho s\u1ef1 s\u1ed1ng c\u00f2n c\u1ee7a c\u00e2y.<\/div>\n
Nh\u00ecn chung, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 t\u00ecm th\u1ea5y g\u1ea7n 1.000 gien kh\u00e1c c\u1ee7a c\u00e2y d\u01b0\u01a1ng ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a EBB1. K\u1ebft qu\u1ea3 c\u1ee7a nghi\u00ean c\u1ee9u n\u00e0y s\u1ebd t\u1ea1o c\u01a1 h\u1ed9i cho c\u00e1c nh\u00e0 lai t\u1ea1o gi\u1ed1ng c\u00e2y tr\u1ed3ng lai t\u1ea1o ra c\u00e1c gi\u1ed1ng c\u00e2y th\u00edch nghi v\u1edbi \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu kh\u1eafc nghi\u1ec7t trong t\u01b0\u01a1ng lai.<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 x\u00e1c nh\u1eadn ch\u1ee9c n\u0103ng c\u1ee7a m\u1ed9t gen ki\u1ec3m so\u00e1t s\u1ef1 th\u1ee9c t\u1ec9nh c\u1ee7a c\u00e2y sau tr\u1ea1ng th\u00e1i ng\u1ee7 \u0111\u00f4ng, m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111i\u1ec1u ch\u1ec9nh s\u1ef1 th\u00edch nghi c\u1ee7a c\u00e2y tr\u01b0\u1edbc nh\u1eefng thay \u0111\u1ed5i m\u00f4i tr\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu.\u0110\u0103ng ng\u00e0y 01-08-2014 trong chuy\u00ean m\u1ee5c Tin […]\n","protected":false},"author":1,"featured_media":6353,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[87],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/6674"}],"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=6674"}],"version-history":[{"count":0,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/6674\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media\/6353"}],"wp:attachment":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media?parent=6674"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/categories?post=6674"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/tags?post=6674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}