{"id":1804,"date":"2014-03-18T01:14:44","date_gmt":"2014-03-17T18:14:44","guid":{"rendered":"http:\/\/antoansinhhoc.vn\/?p=1804"},"modified":"2014-03-18T01:14:44","modified_gmt":"2014-03-17T18:14:44","slug":"giong-lua-bien-doi-gen-bieu-hien-exo-glucanase-co-anh-huong-thuc-day-san-sinh-ra-duong-it-hon","status":"publish","type":"post","link":"https:\/\/nbca.gov.vn\/giong-lua-bien-doi-gen-bieu-hien-exo-glucanase-co-anh-huong-thuc-day-san-sinh-ra-duong-it-hon\/","title":{"rendered":"Gi\u1ed1ng l\u00faa bi\u1ebfn \u0111\u1ed5i gen bi\u1ec3u hi\u1ec7n Exo-glucanase c\u00f3 \u1ea3nh h\u01b0\u1edfng th\u00fac \u0111\u1ea9y s\u1ea3n sinh ra \u0111\u01b0\u1eddng \u00edt h\u01a1n"},"content":{"rendered":"
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C\u00e1c nh\u00e0 khoa h\u1ecdc thu\u1ed9c tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Tohoku v\u00e0 nh\u1eefng c\u1ed9ng t\u00e1c vi\u00ean \u0111\u00e3 ph\u00e1t tri\u1ec3n th\u00e0nh c\u00f4ng gi\u1ed1ng l\u00faa c\u00f4ng ngh\u1ec7 sinh h\u1ecdc c\u00f3 kh\u1ea3 n\u0103ng c\u1ea3i ti\u1ebfn vi\u1ec7c s\u1ea3n sinh ra \u0111\u01b0\u1eddng \u00edt h\u01a1n b\u1eb1ng c\u00e1ch th\u1ec3 hi\u1ec7n EXG exo-glucanase d\u01b0\u1edbi s\u1ef1 \u0111i\u1ec1u ti\u1ebft c\u1ee7a promoter “senescence-inducible”.<\/span>\u0110\u0103ng ng\u00e0y 18-03-2014<\/span> trong chuy\u00ean m\u1ee5c Tin th\u1ebf gi\u1edbi<\/a><\/p>\n<\/div>\n

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Khi m\u1ed9t tr\u00ecnh t\u1ef1 m\u00e3 h\u00f3a GUS \u0111\u01b0\u1ee3c n\u1ed1i v\u00e0o v\u00f9ng promoter n\u00e0y c\u1ee7a gen\u00a0STAY GREEN<\/em>\u00a0(SGR<\/em>)<\/strong>\u00a0trong c\u00e2y l\u00faa v\u00e0 du nh\u1eadp v\u00e0o c\u00e2y l\u00faa kh\u00e1c, ho\u1ea1t \u0111\u1ed9ng GUS tr\u1edf n\u00ean \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c quan s\u00e1t \u1edf giai \u0111o\u1ea1n senescence (l\u00faa duy tr\u00ec \u0111\u01b0\u1ee3c m\u00e0u xanh khi h\u00f3a gi\u00e0). Khi m\u1ed9t ph\u00e2n t\u1eed\u00a0EXG1<\/em>\u00a0cDNA<\/strong>\u00a0\u0111\u01b0\u1ee3c g\u1eafn v\u1edbi\u00a0SGR<\/em>\u00a0promoter<\/strong>\u00a0v\u00e0 cho du nh\u1eadp v\u00e0o c\u00e2y l\u00faa, ho\u1ea1t \u0111\u1ed9ng c\u1ee7a cellulase m\u1ea1nh h\u01a1n \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n sau giai \u0111o\u1ea1n senescence.<\/p>\n

Gi\u1ed1ng l\u00faa biotech nh\u01b0 v\u1eady th\u1ec3 hi\u1ec7n \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 saccharose h\u00f3a c\u00f3 t\u00ednh ch\u1ea5t th\u00fac \u0111\u1ea9y ho\u1eb7c h\u00f3a gi\u00e0 theo ngh\u0129a sinh h\u1ecdc. Tuy nhi\u00ean, kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t \u00fd ngh\u0129a c\u1ee7a saccharose h\u00f3a tr\u01b0\u1edbc khi l\u00faa \u1edf giai \u0111o\u1ea1n senescence. Hi\u1ec7u qu\u1ea3\u00a0saccharification<\/strong>\u00a0c\u00f2n \u0111\u01b0\u1ee3c ng\u01b0\u1eddi ta t\u00ecm th\u1ea5y li\u00ean k\u1ebft v\u1edbi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a enxyme\u00a0cellulase<\/strong>\u00a0trong c\u00e2y l\u00faa bi\u1ebfn \u0111\u1ed5i gen \u1ea5y. H\u01a1n n\u1eefa, c\u00e2y l\u00faa biotech kh\u00f4ng bi\u1ec3u hi\u1ec7n \u0111\u01b0\u1ee3c t\u00ednh tr\u1ea1ng d\u1ecb h\u00ecnh (physical deformity) c\u0169ng nh\u01b0 ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng b\u00ecnh th\u01b0\u1eddng v\u1ec1 t\u00ednh d\u1ee5c (reproductive glitch) sau khi genEXG1<\/em>\u00a0bi\u1ec3u hi\u1ec7n.<\/p>\n

Theo k\u1ebft qu\u1ea3 n\u00eau tr\u00ean, s\u1ef1 bi\u1ec3u hi\u1ec7n c\u1ee7a cellulase v\u00e0 nh\u1eefng enzyme c\u00f3 ch\u1ee9c n\u0103ng l\u00e0m tho\u00e1i h\u00f3a th\u00e0nh t\u1ebf b\u00e0o kh\u00e1c c\u00f3 th\u1ec3 c\u1ea3i ti\u1ebfn kh\u1ea3 n\u0103ng\u00a0saccharification<\/strong>\u00a0c\u1ee7a sinh kh\u1ed1i s\u1ee3i (cellulosic biomass) m\u00e0 kh\u00f4ng l\u00e0m t\u1ed5n h\u1ea1i \u0111\u1ebfn s\u1ef1 t\u0103ng tr\u01b0\u1edfng trong s\u1ea3n xu\u1ea5t c\u00f3 hi\u1ec7u qu\u1ea3 biofuels.<\/p>\n

 <\/p>\n

Xem b\u00e0i t\u00f3m t\u1eaft\u00a0http:\/\/link.springer.com\/article\/10.1007\/s11248-014-9786-z<\/a>.<\/p>\n

 <\/p>\n

\"\"<\/p>\n

Theo IAS<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c nh\u00e0 khoa h\u1ecdc thu\u1ed9c tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Tohoku v\u00e0 nh\u1eefng c\u1ed9ng t\u00e1c vi\u00ean \u0111\u00e3 ph\u00e1t tri\u1ec3n th\u00e0nh c\u00f4ng gi\u1ed1ng l\u00faa c\u00f4ng ngh\u1ec7 sinh h\u1ecdc c\u00f3 kh\u1ea3 n\u0103ng c\u1ea3i ti\u1ebfn vi\u1ec7c s\u1ea3n sinh ra \u0111\u01b0\u1eddng \u00edt h\u01a1n b\u1eb1ng c\u00e1ch th\u1ec3 hi\u1ec7n EXG exo-glucanase d\u01b0\u1edbi s\u1ef1 \u0111i\u1ec1u ti\u1ebft c\u1ee7a promoter “senescence-inducible”.\u0110\u0103ng ng\u00e0y 18-03-2014 trong chuy\u00ean m\u1ee5c […]\n","protected":false},"author":1,"featured_media":6372,"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\/1804"}],"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=1804"}],"version-history":[{"count":0,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/1804\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media\/6372"}],"wp:attachment":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media?parent=1804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/categories?post=1804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/tags?post=1804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}