{"id":1989,"date":"2013-07-17T02:42:27","date_gmt":"2013-07-16T19:42:27","guid":{"rendered":"http:\/\/antoansinhhoc.vn\/?p=1989"},"modified":"2013-07-17T02:42:27","modified_gmt":"2013-07-16T19:42:27","slug":"phat-hien-gen-co-the-giup-thu-hoach-rau-diep-trong-thoi-tiet-nong","status":"publish","type":"post","link":"https:\/\/nbca.gov.vn\/phat-hien-gen-co-the-giup-thu-hoach-rau-diep-trong-thoi-tiet-nong\/","title":{"rendered":"Ph\u00e1t hi\u1ec7n gen c\u00f3 th\u1ec3 gi\u00fap thu ho\u1ea1ch rau di\u1ebfp trong th\u1eddi ti\u1ebft n\u00f3ng"},"content":{"rendered":"
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M\u1ed9t nh\u00f3m c\u00e1c\u00a0nh\u00e0 nghi\u00ean c\u1ee9u, d\u1eabn \u0111\u1ea7u b\u1edfi Davis, m\u1ed9t nh\u00e0 th\u1ef1c v\u1eadt h\u1ecdc thu\u1ed9c tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc California, \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1ed9t gen v\u00e0 enzyme li\u00ean quan \u0111\u1ebfn vi\u1ec7c ki\u1ec1m h\u00e3m s\u1ef1 n\u1ea3y m\u1ea7mc\u1ee7a rau di\u1ebfp trong th\u1eddi ti\u1ebft n\u00f3ng – m\u1ed9t kh\u00e1m ph\u00e1 c\u00f3 th\u1ec3 l\u00e0m cho rau di\u1ebfp n\u1ea3y m\u1ea7m quanh n\u0103m, ngay c\u1ea3 \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n

\u0110\u0103ng ng\u00e0y\u00a017-07-2013\u00a0trong chuy\u00ean m\u1ee5c\u00a0Tin th\u1ebf gi\u1edbi<\/a><\/p>\n

Nghi\u00ean c\u1ee9u c\u0169ng bao g\u1ed3m c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1eeb \u0110\u1ea1i h\u1ecdc N\u00f4ng nghi\u1ec7p Arcadia Biosciences v\u00e0 Acharya NG Ranga c\u1ee7a \u1ea4n \u0110\u1ed9.<\/p>\n

Ph\u00e1t hi\u1ec7n n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi ng\u00e0nh c\u00f4ng nghi\u1ec7p rau di\u1ebfp g\u1ea7n 2 t\u1ef7 USD c\u1ee7a bang California v\u00e0 Arizona, n\u01a1i s\u1ea3n xu\u1ea5t h\u01a1n 90 ph\u1ea7n tr\u0103m rau di\u1ebfp c\u1ee7a qu\u1ed1c gia. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed \u00a0T<\/em>\u1ebf<\/em> b<\/em>\u00e0<\/em>o th<\/em>\u1ef1<\/em>c v<\/em>\u1ead<\/em>t<\/em>\u00a0(The\u00a0Plant Cell)<\/em>.<\/p>\n

“Vi\u1ec7c ph\u00e1t hi\u1ec7n gen s\u1ebd cho ph\u00e9p c\u00e1c nh\u00e0 ch\u1ecdn gi\u1ed1ng th\u1ef1c v\u1eadt ph\u00e1t tri\u1ec3n c\u00e1c gi\u1ed1ng rau di\u1ebfp c\u00f3 th\u1ec3 n\u1ea3y m\u1ea7m t\u1ed1t h\u01a1n v\u00e0 ph\u00e1t tri\u1ec3n \u0111\u1ec3n giai \u0111o\u1ea1n tr\u01b0\u1edfng th\u00e0nh d\u01b0\u1edbi nhi\u1ec7t \u0111\u1ed9 cao”, Kent Bradford, t\u00e1c gi\u1ea3 \u0111\u1ee9ng \u0111\u1ea7u c\u1ee7a nghi\u00ean c\u1ee9u, gi\u00e1o s\u01b0 v\u1ec1 khoa h\u1ecdc th\u1ef1c v\u1eadt v\u00e0 l\u00e0 Gi\u00e1m \u0111\u1ed1c Trung t\u00e2m C\u00f4ng ngh\u1ec7 sinh h\u1ecdc h\u1ea1t gi\u1ed1ng \u0110\u1ea1i h\u1ecdc California-Davis, cho bi\u1ebft.<\/p>\n

“V\u00e0 b\u1edfi v\u00ec c\u01a1 ch\u1ebf \u1ee9c ch\u1ebf s\u1ef1 n\u1ea3y m\u1ea7m li\u00ean quan \u0111\u1ebfn th\u1eddi ti\u1ebft n\u00f3ng trong h\u1ea1t rau di\u1ebfp d\u01b0\u1eddng nh\u01b0 l\u00e0 kh\u00e1 ph\u1ed5 bi\u1ebfn trong nhi\u1ec1u lo\u00e0i th\u1ef1c v\u1eadt, ch\u00fang t\u00f4i ngh\u0129 r\u1eb1ng c\u00e1c c\u00e2y tr\u1ed3ng kh\u00e1c c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i \u0111\u1ec3 c\u1ea3i thi\u1ec7n s\u1ef1 n\u1ea3y m\u1ea7m c\u1ee7a ch\u00fang,” \u00f4ng n\u00f3i. “\u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 ng\u00e0y c\u00e0ng quan tr\u1ecdng khi nhi\u1ec7t \u0111\u1ed9 to\u00e0n c\u1ea7u \u0111\u01b0\u1ee3c d\u1ef1 \u0111o\u00e1n s\u1ebd t\u0103ng l\u00ean.”<\/p>\n

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Kh\u00e1m ph\u00e1 c\u01a1 ch\u1ebf gen \u1ee9c ch\u1ebf s\u1ef1 n\u1ea3y m\u1ea7m li\u00ean quan \u0111\u1ebfn th\u1eddi ti\u1ebft n\u00f3ng trong h\u1ea1t rau di\u1ebfp c\u00f3 th\u1ec3 ng\u00e0y c\u00e0ng quan tr\u1ecdng khi nhi\u1ec7t \u0111\u1ed9 to\u00e0n c\u1ea7u t\u0103ng l\u00ean (\u1ea2nh: \u0110\u1ea1i h\u1ecdc California – Davis)<\/p>\n<\/div>\n

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H\u1ea7u h\u1ebft c\u00e1c gi\u1ed1ng rau di\u1ebfp ra hoa v\u00e0o m\u00f9a xu\u00e2n ho\u1eb7c \u0111\u1ea7u m\u00f9a h\u00e8 v\u00e0 sau \u0111\u00f3 t\u1ea1o h\u1ea1t – m\u1ed9t \u0111\u1eb7c \u0111i\u1ec3m m\u00e0 r\u1ea5t c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn ngu\u1ed3n g\u1ed1c c\u1ee7a ch\u00fang trong v\u00f9ng \u0110\u1ecba Trung H\u1ea3i, nh\u01b0 California, \u0111\u1eb7c tr\u01b0ng v\u1edbi m\u00f9a h\u00e8 kh\u00f4. C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 quan s\u00e1t th\u1ea5y trong nhi\u1ec1u n\u0103m qua l\u00e0 m\u1ed9t c\u01a1 ch\u1ebf ng\u1ee7 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u01b0\u1eddng nh\u01b0 \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t rau di\u1ebfp d\u01b0\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n qu\u00e1 n\u00f3ng v\u00e0 kh\u00f4 \u0111\u1ec3 duy tr\u00ec t\u0103ng tr\u01b0\u1edfng. Trong khi s\u1ef1 \u1ee9c ch\u1ebf t\u1ef1 nhi\u00ean n\u00e0y ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng hoang d\u1ea1i, n\u00f3 l\u00e0 m\u1ed9t tr\u1edf ng\u1ea1i cho s\u1ea3n xu\u1ea5t rau di\u1ebfp th\u01b0\u01a1ng m\u1ea1i.<\/p>\n

Trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p rau di\u1ebfp California v\u00e0 Arizona, h\u1ea1t gi\u1ed1ng rau di\u1ebfp \u0111\u01b0\u1ee3c tr\u1ed3ng \u1edf \u0111\u00e2u \u0111\u00f3 m\u1ed7i ng\u00e0y trong n\u0103m – th\u1eadm ch\u00ed trong th\u00e1ng 9 t\u1ea1i thung l\u0169ng Imperial California v\u00e0 g\u1ea7n Yuma, Arizona, n\u01a1i nhi\u1ec7t \u0111\u1ed9 th\u01b0\u1eddng xuy\u00ean \u0111\u1ea1t \u0111\u1ebfn 110 \u0111\u1ed9.<\/p>\n

\u0110\u1ec3 h\u1ea1t gi\u1ed1ng b\u1eaft \u0111\u1ea7u n\u1ea3y m\u1ea7m cho v\u1ee5 m\u00f9a \u0111\u00f4ng \u1edf nh\u1eefng v\u00f9ng kh\u00ed h\u1eadu n\u00f3ng, ng\u01b0\u1eddi tr\u1ed3ng rau \u0111\u00e3 chuy\u1ec3n sang l\u00e0m m\u00e1t \u0111\u1ea5t b\u1eb1ng vi\u1ec7c t\u01b0\u1edbi phun ho\u1eb7c ng\u00e2m h\u1ea1t gi\u1ed1ng \u1edf nhi\u1ec7t \u0111\u1ed9 l\u1ea1nh v\u00e0 l\u00e0m kh\u00f4 ch\u00fang tr\u01b0\u1edbc khi tr\u1ed3ng – ph\u01b0\u01a1ng ph\u00e1p r\u1ea5t t\u1ed1n k\u00e9m v\u00e0 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng th\u00e0nh c\u00f4ng.<\/p>\n

Trong nghi\u00ean c\u1ee9u m\u1edbi, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 chuy\u1ec3n sang nghi\u00ean c\u1ee9u b\u1ea3n ch\u1ea5t di truy\u1ec1n rau di\u1ebfp \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u01a1 ch\u1ebf ki\u1ec3m so\u00e1t s\u1ef1 n\u1ea3y m\u1ea7m h\u1ea1t li\u00ean quan \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9. H\u1ecd \u0111\u00e3 x\u00e1c \u0111\u1ecbnh m\u1ed9t v\u00f9ng c\u1ee7a nhi\u1ec5m s\u1eafc th\u1ec3 s\u1ed1 6 trong m\u1ed9t t\u1ed5 ti\u00ean hoang d\u1ea1i c\u1ee7a c\u00e1c gi\u1ed1ng rau di\u1ebfp th\u01b0\u01a1ng m\u1ea1i cho ph\u00e9p h\u1ea1t gi\u1ed1ng n\u1ea3y m\u1ea7m trong nhi\u1ec7t \u0111\u1ed9 \u1ea5m. Khi m\u00e0 v\u00f9ng nhi\u1ec5m s\u1eafc th\u1ec3 n\u00e0y \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o gi\u1ed1ng x\u00e0 l\u00e1ch tr\u1ed3ng, nh\u1eefng gi\u1ed1ng n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng n\u1ea3y m\u1ea7m trong nhi\u1ec7t \u0111\u1ed9 \u1ea5m.<\/p>\n

Nghi\u00ean c\u1ee9u l\u1eadp b\u1ea3n \u0111\u1ed3 di truy\u1ec1n s\u00e2u h\u01a1n t\u1eadp trung v\u00e0o m\u1ed9t gen chuy\u00ean bi\u1ec7t ki\u1ec3m so\u00e1t s\u1ef1 s\u1ea3n xu\u1ea5t m\u1ed9t ho\u00f3c m\u00f4n th\u1ef1c v\u1eadt c\u00f3 t\u00ean l\u00e0 axit abscisic \u2013 c\u00f3 vai tr\u00f2 \u1ee9c ch\u1ebf s\u1ef1 n\u1ea3y m\u1ea7m. C\u00e1c gen m\u1edbi \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh “m\u1edf” trong h\u1ea7u h\u1ebft c\u00e1c h\u1ea1t rau di\u1ebfp khi h\u1ea1t ti\u1ebfp x\u00fac v\u1edbi \u0111\u1ed9 \u1ea9m \u1edf nhi\u1ec7t \u0111\u1ed9 \u1ea5m, l\u00e0m t\u0103ng s\u1ea3n xu\u1ea5t axit abscisic. Tuy nhi\u00ean, trong c\u00e1c t\u1ed5 ti\u00ean hoang d\u1ea1i m\u00e0 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 nghi\u00ean c\u1ee9u, gen n\u00e0y kh\u00f4ng m\u1edf \u1edf nhi\u1ec7t \u0111\u1ed9 cao. K\u1ebft qu\u1ea3 l\u00e0, axit abscisic kh\u00f4ng \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u00e0 h\u1ea1t v\u1eabn c\u00f3 th\u1ec3 n\u1ea3y m\u1ea7m. Sau \u0111\u00f3, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 ch\u1ee9ng minh r\u1eb1ng h\u1ecd c\u00f3 th\u1ec3 ho\u1eb7c l\u00e0 l\u00e0m “im l\u1eb7ng” ho\u1eb7c g\u00e2y \u0111\u1ed9t bi\u1ebfn gen \u1ee9c ch\u1ebf n\u1ea3y m\u1ea7m trong c\u00e1c gi\u1ed1ng x\u00e0 l\u00e1ch tr\u1ed3ng, v\u00ec th\u1ebf cho ph\u00e9p nh\u1eefng gi\u1ed1ng n\u1ea3y m\u1ea7m v\u00e0 ph\u00e1t tri\u1ec3n ngay c\u1ea3 \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n\n\n\n
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Ngu\u1ed3n: Sciencedaily<\/p>\n

http:\/\/www.sciencedaily.com\/releases\/2013\/03\/130329125309.htm<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

M\u1ed9t nh\u00f3m c\u00e1c\u00a0nh\u00e0 nghi\u00ean c\u1ee9u, d\u1eabn \u0111\u1ea7u b\u1edfi Davis, m\u1ed9t nh\u00e0 th\u1ef1c v\u1eadt h\u1ecdc thu\u1ed9c tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc California, \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1ed9t gen v\u00e0 enzyme li\u00ean quan \u0111\u1ebfn vi\u1ec7c ki\u1ec1m h\u00e3m s\u1ef1 n\u1ea3y m\u1ea7mc\u1ee7a rau di\u1ebfp trong th\u1eddi ti\u1ebft n\u00f3ng – m\u1ed9t kh\u00e1m ph\u00e1 c\u00f3 th\u1ec3 l\u00e0m cho rau di\u1ebfp n\u1ea3y m\u1ea7m quanh […]\n","protected":false},"author":1,"featured_media":6422,"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\/1989"}],"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=1989"}],"version-history":[{"count":0,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/1989\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media\/6422"}],"wp:attachment":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media?parent=1989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/categories?post=1989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/tags?post=1989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}