{"id":6652,"date":"2014-06-01T10:10:29","date_gmt":"2014-06-01T03:10:29","guid":{"rendered":"http:\/\/antoansinhhoc.vn\/?p=1744"},"modified":"2014-06-01T10:10:29","modified_gmt":"2014-06-01T03:10:29","slug":"bong-vai-cai-tien-tinh-chong-chiu-kho-han-thong-qua-su-the-hien-hoan-toan-cua-gen-tamnsod","status":"publish","type":"post","link":"https:\/\/nbca.gov.vn\/bong-vai-cai-tien-tinh-chong-chiu-kho-han-thong-qua-su-the-hien-hoan-toan-cua-gen-tamnsod\/","title":{"rendered":"B\u00f4ng v\u1ea3i c\u1ea3i ti\u1ebfn t\u00ednh ch\u1ed1ng ch\u1ecbu kh\u00f4 h\u1ea1n th\u00f4ng qua s\u1ef1 th\u1ec3 hi\u1ec7n ho\u00e0n to\u00e0n c\u1ee7a gen TaMnSOD"},"content":{"rendered":"
B\u00f4ng v\u1ea3i \u0111\u01b0\u1ee3c xem nh\u01b0 c\u00e2y tr\u1ed3ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu kh\u00f4 h\u1ea1n t\u1ed1t.
\n<\/span>\u0110\u0103ng ng\u00e0y 01-06-2014<\/span> trong chuy\u00ean m\u1ee5c Tin th\u1ebf gi\u1edbi<\/a><\/div>\n
\"\"<\/div>\n
\n

Tuy nhi\u00ean, t\u00ednh ch\u1ed1ng ch\u1ecbu \u1ea5y thay \u0111\u1ed5i r\u1ea5t l\u1edbn t\u00f9y thu\u1ed9c v\u00e0o gi\u1ed1ng c\u1ee5 th\u1ec3. Do \u0111\u00f3, ng\u01b0\u1eddi ta c\u1ea7n ph\u1ea3i c\u1ea3i ti\u1ebfn t\u00ednh tr\u1ea1ng ch\u1ed1ng ch\u1ecbu kh\u00f4 h\u1ea1n cho b\u00f4ng v\u1ea3i. M\u1ed9t gen t\u1eeb c\u00e2y Tamarix androssowii<\/em><\/strong>,<\/em> lo\u00e0i th\u1ef1c v\u1eadt c\u1ef1c k\u1ef3 ch\u1ecbu h\u1ea1n (h\u00ecnh) \u1edf Xinjiang, Trung<\/a> Qu\u1ed1c, \u0111\u01b0\u1ee3c ng\u01b0\u1eddi ta nghi\u00ean c\u1ee9u nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p t\u00edch c\u1ef1c cho m\u1ee5c ti\u00eau c\u1ea3i ti\u1ebfn \u1ea5y. Trong m\u1ed9t nghi\u00ean c\u1ee9u tr\u01b0\u1edbc \u0111\u00e2y, c\u00e2y poplar bi\u1ebfn \u0111\u1ed5i gen bi\u1ec3u hi\u1ec7n m\u1ea1nh m\u1ebd gen c\u1ee7a T. androssowii<\/em>, TaMnSOD<\/em><\/strong>, \u0111\u00e3 minh ch\u1ee9ng t\u00ednh ch\u1ed1ng ch\u1ecbu kh\u00f4 h\u1ea1n \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn. Theo nh\u1eefng k\u1ebft qu\u1ea3 tr\u01b0\u1edbc \u0111\u00e2y, TaMnSOD<\/em><\/strong> \u0111\u01b0\u1ee3c ng\u01b0\u1eddi ta chuy\u1ec3n n\u1ea1p v\u00e0o c\u00e2y b\u00f4ng v\u1ea3i v\u00e0 th\u1ec3 hi\u1ec7n gen th\u00e0nh c\u00f4ng s\u00e1ng t\u1ea1o ra c\u00e1c d\u00f2ng transgenic \u0111\u1ed9c l\u1eadp nhau. C\u00e1c d\u00f2ng transgenic n\u00e0y v\u00e0 c\u00e2y \u0111\u1ed1i ch\u1ee9ng \u0111\u01b0\u1ee3c tr\u1ed3ng v\u00e0 \u0111\u00e1nh gi\u00e1 ki\u1ec3u h\u00ecnh. Ng\u01b0\u1eddi ta so s\u00e1nh nh\u1eefng th\u00f4ng s\u1ed1 li\u00ean quan \u0111\u1ebfn sinh h\u00f3a v\u00e0 sinh l\u00fd trong \u0111i\u1ec1u ki\u1ec7n b\u1ecb stress do thi\u1ebfu n\u01b0\u1edbc trong t\u1ee7 nu\u00f4i tr\u1ed3ng nh\u00e2n t\u1ea1o (growth chamber). C\u00e1c t\u00ednh tr\u1ea1ng h\u00ecnh th\u00e1i h\u1ecdc c\u0169ng \u0111\u01b0\u1ee3c quan s\u00e1t sau khi ph\u1ee5c h\u1ed3i b\u1eb1ng c\u00e1ch t\u01b0\u1edbi tr\u1edf l\u1ea1i. Nh\u1eefng c\u00e2y transgenics \u0111\u00e3 c\u1ea3i thi\u1ec7n \u0111\u01b0\u1ee3c ho\u1ea1t t\u00ednh c\u1ee7a enzyme \u0111\u00f3ng vai tr\u00f2 ch\u1ed1ng s\u1ef1 \u00f4xi h\u00f3a (antioxidant enzyme) v\u00e0 t\u00ecnh tr\u1ea1ng nguy\u00ean v\u1eb9n c\u1ee7a m\u00e0ng t\u1ebf b\u00e0o (cell membrane integrity). C\u00e1c t\u00ednh tr\u1ea1ng kh\u00e1c nh\u01b0 quang h\u1ee3p thu\u1ea7n (net photosynthesis), s\u1ef1 \u0111\u00f3ng m\u1edf kh\u00ed kh\u1ed5ng, v\u00e0 t\u1ed1c \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc c\u0169ng t\u0103ng c\u00f3 \u00fd ngh\u0129a trong c\u00e2y transgenic. B\u00f4ng v\u1ea3i chuy\u1ec3n n\u1ea1p gen c\u00f2n t\u0103ng sinh kh\u1ed1i, r\u1ec5, l\u00e1 so v\u1edbi gi\u1ed1ng nguy\u00ean th\u1ee7y \u1edf giai \u0111o\u1ea1n sau 2 tu\u1ea7n h\u1ed3i ph\u1ee5c.<\/p>\n

Xem \u00a0http:\/\/link.springer.com\/article\/10.1007\/s11032-014-0015-5\/fulltext.html<\/a>.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

B\u00f4ng v\u1ea3i \u0111\u01b0\u1ee3c xem nh\u01b0 c\u00e2y tr\u1ed3ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu kh\u00f4 h\u1ea1n t\u1ed1t. \u0110\u0103ng ng\u00e0y 01-06-2014 trong chuy\u00ean m\u1ee5c Tin th\u1ebf gi\u1edbi Tuy nhi\u00ean, t\u00ednh ch\u1ed1ng ch\u1ecbu \u1ea5y thay \u0111\u1ed5i r\u1ea5t l\u1edbn t\u00f9y thu\u1ed9c v\u00e0o gi\u1ed1ng c\u1ee5 th\u1ec3. Do \u0111\u00f3, ng\u01b0\u1eddi ta c\u1ea7n ph\u1ea3i c\u1ea3i ti\u1ebfn t\u00ednh tr\u1ea1ng ch\u1ed1ng ch\u1ecbu kh\u00f4 h\u1ea1n cho […]\n","protected":false},"author":1,"featured_media":6358,"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\/6652"}],"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=6652"}],"version-history":[{"count":0,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/6652\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media\/6358"}],"wp:attachment":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media?parent=6652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/categories?post=6652"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/tags?post=6652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}