{"id":6755,"date":"2015-10-15T08:08:04","date_gmt":"2015-10-15T01:08:04","guid":{"rendered":"http:\/\/antoansinhhoc.vn\/?p=1210"},"modified":"2015-10-15T08:08:04","modified_gmt":"2015-10-15T01:08:04","slug":"tim-thay-gen-laba1-lien-quan-den-tinh-trang-rau-dai-co-gai-nham-cua-lua-hoang","status":"publish","type":"post","link":"https:\/\/nbca.gov.vn\/tim-thay-gen-laba1-lien-quan-den-tinh-trang-rau-dai-co-gai-nham-cua-lua-hoang\/","title":{"rendered":"T\u00ecm th\u1ea5y gen LABA1 li\u00ean quan \u0111\u1ebfn t\u00ednh tr\u1ea1ng r\u00e2u d\u00e0i c\u00f3 gai nh\u00e1m c\u1ee7a l\u00faa hoang"},"content":{"rendered":"
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L\u00faa hoang Oryza rufipogon v\u00e0 lo\u00e0i l\u00faa tr\u1ed3ng c\u00f3 quan h\u1ec7 huy\u1ebft th\u1ed1ng Oryza sativa \u0111\u1ec1u th\u1ec3 hi\u1ec7n r\u00e2u d\u00e0i c\u00f3 gai nh\u00e1m (long and barbed awns).<\/span>\u0110\u0103ng ng\u00e0y 15-10-2015<\/span> trong chuy\u00ean m\u1ee5c Tin th\u1ebf gi\u1edbi<\/a><\/p>\n<\/div>\n

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Tr\u00e1i l\u1ea1i, gi\u1ed1ng l\u00faa tr\u1ed3ng O. sativa \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c ch\u1ecdn l\u1ecdc \u0111\u1ec3 lo\u1ea1i tr\u1eeb ki\u1ec3u h\u00ecnh c\u00f3 r\u00e2u, l\u00e0m d\u1ec5 d\u00e0ng h\u01a1n cho k\u1ef9 thu\u1eadt sau thu ho\u1ea1ch h\u1ea1t th\u00f3c v\u00e0 t\u1ed3n tr\u1eef h\u1ea1t. Vi\u1ec7c chuy\u1ec3n t\u1eeb tr\u1ea1ng th\u00e1i r\u00e2u d\u00e0i c\u00f3 gai nh\u00e1m sang tr\u1ea1ng th\u00e1i r\u00e2u ng\u1eafn kh\u00f4ng c\u00f3 gai l\u00e0 m\u1ed9t s\u1ef1 ki\u1ec7n quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh thu\u1ea7n h\u00f3a gi\u1ed1ng l\u00faa.<\/p>\n

M\u1ed9t nh\u00f3m c\u00e1c nh\u00e0 khoa h\u1ecdc c\u1ee7a \u0110\u1ea1i H\u1ecdc N\u00f4ng Nghi\u1ec7p Trung Qu\u1ed1c v\u00e0 \u0110H N\u00f4ng Nghi\u1ec7p H\u1ed3 Nam, Trung Qu\u1ed1c, \u0110H Cornell Hoa K\u1ef3, g\u1ea7n \u0111\u00e2y \u0111\u00e3 t\u00ecm th\u1ea5y r\u1eb1ng: s\u1ef1 th\u1ec3 hi\u1ec7n \u00a0c\u1ee7a r\u00e2u d\u00e0i c\u00f3 gai nh\u00e1m trong l\u00faa hoang \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u1edfi m\u1ed9t gen ch\u1ee7 l\u1ef1c tr\u00ean nhi\u1ec5m s\u1eafc th\u1ec3 s\u1ed1 4, gen LABA1 (vi\u1ebft t\u1eaft t\u1eeb ch\u1eef LONG AND BARBED AWN1), gen n\u00e0y m\u00e3 h\u00f3a enzyme c\u00f3 ch\u1ee9c n\u0103ng k\u00edch ho\u1ea1t cytokinin.<\/p>\n

S\u1ef1 gia t\u0103ng h\u00e0m l\u01b0\u1ee3ng cytokinin th\u00fac \u0111\u1ea9y s\u1ef1 t\u0103ng tr\u01b0\u1edfng c\u1ee7a gai nh\u00e1m v\u00e0 s\u1ef1 k\u00e9o d\u00e0i c\u1ee7a r\u00e2u h\u1ea1t. M\u1eb7t kh\u00e1c, alen l\u1eb7n laba1 c\u1ee7a gi\u1ed1ng l\u00faa tr\u1ed3ng, c\u00f3 ch\u1ee9a m\u1ed9t m\u1ea5t \u0111o\u1ea1n thu\u1ed9c d\u1ea1ng chuy\u1ec3n khung (frame-shift deletion), l\u00e0m gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng cytokinin trong ph\u00f4i m\u1ea7m t\u1ea1o r\u00e2u h\u1ea1t (awn primordia), l\u00e0m x\u00e1o tr\u1ed9n s\u1ef1 h\u00ecnh th\u00e0nh c\u1ee7a gai nh\u00e1m v\u00e0 s\u1ef1 k\u00e9o d\u00e0i c\u1ee7a r\u00e2u h\u1ea1t. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch s\u00e2u cho th\u1ea5y alen l\u1eb7n laba1 c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb lo\u00e0i ph\u1ee5 japonica r\u1ed3i chuy\u1ec3n v\u00e0o gene pool c\u1ee7a lo\u00e0i ph\u1ee5 indica th\u00f4ng qua lai t\u1ea1o, \u0111i\u1ec1u n\u00e0y g\u1ee3i ra r\u1eb1ng: lo\u00e0i ng\u01b0\u1eddi \u0111\u00e3 ch\u1ecdn l\u1ecdc t\u00ednh tr\u1ea1ng \u1ea5y trong giai \u0111o\u1ea1n \u0111\u1ea7u ti\u00ean c\u1ee7a ti\u1ebfn tr\u00ecnh thu\u1ea7n h\u00f3a.<\/p>\n

Vi\u1ec7c x\u00e1c \u0111\u1ecbnh th\u00e0nh c\u00f4ng gen LABA1 cho ch\u00fang ta th\u1ea5y qu\u00e1 tr\u00ecnh thu\u1ea7n h\u00f3a c\u1ee7a l\u00faa tr\u1ed3ng v\u00e0 c\u01a1 ch\u1ebf ph\u00e1t tri\u1ec3n r\u00e2u h\u1ea1t l\u00faa.<\/p>\n<\/div>\n

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Xem The Plant Cell.<\/p>\n

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H\u00ecnh 1<\/u>. R\u00e2u c\u1ee7a l\u00faa hoang O. rufipogon v\u00e0 l\u00faa tr\u1ed3ng O. sativa.<\/em><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

L\u00faa hoang Oryza rufipogon v\u00e0 lo\u00e0i l\u00faa tr\u1ed3ng c\u00f3 quan h\u1ec7 huy\u1ebft th\u1ed1ng Oryza sativa \u0111\u1ec1u th\u1ec3 hi\u1ec7n r\u00e2u d\u00e0i c\u00f3 gai nh\u00e1m (long and barbed awns).\u0110\u0103ng ng\u00e0y 15-10-2015 trong chuy\u00ean m\u1ee5c Tin th\u1ebf gi\u1edbi Tr\u00e1i l\u1ea1i, gi\u1ed1ng l\u00faa tr\u1ed3ng O. sativa \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c ch\u1ecdn l\u1ecdc \u0111\u1ec3 lo\u1ea1i tr\u1eeb ki\u1ec3u h\u00ecnh c\u00f3 r\u00e2u, […]\n","protected":false},"author":1,"featured_media":1225,"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\/6755"}],"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=6755"}],"version-history":[{"count":0,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/6755\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media\/1225"}],"wp:attachment":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media?parent=6755"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/categories?post=6755"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/tags?post=6755"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}