{"id":1745,"date":"2014-06-01T10:11:01","date_gmt":"2014-06-01T03:11:01","guid":{"rendered":"http:\/\/antoansinhhoc.vn\/?p=1745"},"modified":"2014-06-01T10:11:01","modified_gmt":"2014-06-01T03:11:01","slug":"cac-gen-memory-cho-phep-cay-bap-thich-nghi-voi-stress-kho-han","status":"publish","type":"post","link":"https:\/\/nbca.gov.vn\/cac-gen-memory-cho-phep-cay-bap-thich-nghi-voi-stress-kho-han\/","title":{"rendered":"C\u00e1c gen Memory cho ph\u00e9p c\u00e2y b\u1eafp th\u00edch nghi v\u1edbi stress kh\u00f4 h\u1ea1n"},"content":{"rendered":"
S\u1ef1 ghi nh\u1edb stress l\u00e0 kh\u1ea3 n\u0103ng \u0111\u1eb7c bi\u1ec7t c\u1ee7a c\u00e2y l\u00e0m thay \u0111\u1ed5i s\u1ef1 \u0111\u00e1p \u1ee9ng sinh l\u00fd v\u00e0 phi\u00ean m\u00e3 c\u1ee7a ch\u00fang \u0111\u1ed1i v\u1edbi stress tr\u01b0\u1edbc khi ch\u00fang b\u1ecb g\u00e2y h\u1ea1i.
\n<\/span>\u0110\u0103ng ng\u00e0y 01-06-2014<\/span> trong chuy\u00ean m\u1ee5c Tin th\u1ebf gi\u1edbi<\/a><\/div>\n
\n

\"\"<\/p>\n

Trong c\u00e2y Arabidopsis thaliana<\/em>, n\u00f3 th\u1ec3 hi\u1ec7n s\u1ef1 h\u00e0nh \u0111\u1ed9ng c\u00f3 t\u00ednh ch\u1ea5t kinh nghi\u1ec7m khi b\u1ecb thi\u1ebfu n\u01b0\u1edbc (dehydration<\/a>), bi\u1ec3u hi\u1ec7n t\u1eadp t\u00ednh phi\u00ean m\u00e3 (transcriptional behavior). \u0110i\u1ec1u n\u00e0y cho th\u1ea5y kh\u1ea3 n\u0103ng ghi nh\u1edb c\u1ee7a c\u00e2y \u0111\u1ed1i v\u1edbi stress l\u1ea7n tr\u01b0\u1edbc. M\u1ed9t v\u00e0i gen ph\u1ea3n \u1ee9ng v\u1edbi stress l\u1ea7n \u0111\u1ea7u ti\u00ean b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i phi\u00ean m\u00e3 c\u1ee7a ch\u00fang nh\u01b0ng cung c\u1ea5p m\u1ed9t ph\u1ea3n \u1ee9ng kh\u00e1c \u0111\u1ed1i v\u1edbi nh\u1eefng stress x\u1ea3y ra sau \u0111\u00f3. S\u1ef1 ki\u1ec7n \u1ea5y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ‘memory genes<\/strong>‘. Tuy nhi\u00ean, hi\u1ec7n t\u01b0\u1ee3ng nh\u01b0 v\u1eady v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c bi\u1ebft m\u1ed9t c\u00e1ch c\u1eb7n k\u1ebd th\u00ed d\u1ee5 nh\u01b0 kh\u1ea3 n\u0103ng \u0111\u00e1p \u1ee9ng theo ghi nh\u1edb (memory responses) c\u00f3 trong th\u1ef1c v\u1eadt h\u1ea1t k\u00edn (angiosperms). Nh\u1eefng \u0111\u00e1p \u1ee9ng v\u1ec1 phi\u00ean m\u00e3 c\u1ee7a c\u00e2y b\u1eafp (Zea mays<\/em> L.) khi b\u1ecb stress do kh\u00f4 h\u1ea1n \u0111\u01b0\u1ee3c ng\u01b0\u1eddi ta \u0111em ra so s\u00e1nh v\u1edbi nh\u1eefng ph\u1ea3n \u1ee9ng c\u1ee7a c\u00e2y b\u1ecb stress l\u1ea7n \u0111\u1ea7u ti\u00ean. C\u00f3 b\u1ed1n th\u00e0nh ph\u1ea7n c\u1ee7a vi\u1ec7c \u0111\u00e1p \u1ee9ng phi\u00ean m\u00e3 kh\u00e1c nhau nh\u01b0 nh\u1eefng quan s\u00e1t tr\u00ean c\u00e2y A. thaliana<\/em> \u0111\u01b0\u1ee3c kh\u00e1m ph\u00e1 tr\u01b0\u1edbc \u0111\u00f3. \u0110\u00e2y l\u00e0 minh ch\u1ee9ng c\u00e2y \u0111\u01a1n t\u1eed di\u1ec7p v\u00e0 song t\u1eed di\u1ec7p \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng ghi nh\u1edb nh\u01b0 nhau \u0111\u1ed1i v\u1edbi stress do m\u1ea5t n\u01b0\u1edbc. C\u00e1c th\u00e0nh ph\u1ea7n phi\u00ean m\u00e3 (transcription patterns) \u0111\u1ec1u ch\u1ec9 ra r\u1eb1ng \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a nh\u1eefng gen \u0111\u00e1p \u1ee9ng l\u1ea1i v\u1edbi stress khi c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng l\u1eadp \u0111i l\u1eadp l\u1ea1i stress \u1ea5y, r\u1ea5t kh\u00e1c v\u1edbi \u0111\u1eb7c \u0111i\u1ec3m ph\u1ea3n \u1ee9ng v\u1edbi stress kh\u1edfi \u0111i\u1ec3m. \u0110i\u1ec1u \u1ea5y kh\u1eb3ng \u0111\u1ecbnh s\u1ef1 ki\u1ec7n ghi nh\u1edb \u0111\u01b0\u1ee3c stress (stress memory<\/strong>) l\u00e0 m\u1ed9t ki\u1ec3u h\u00ecnh ph\u1ee9c t\u1ea1p \u2013 h\u1ec7 qu\u1ea3 c\u1ee7a nh\u1eefng \u0111\u00e1p \u1ee9ng c\u00f3 t\u00ednh ch\u1ea5t t\u1ed5ng h\u1ee3p trong l\u1ed9 tr\u00ecnh truy\u1ec1n nhi\u1ec1u t\u00edn hi\u1ec7u (multiple-signaling pathways).<\/p>\n

Xem \u00a0http:\/\/www.biomedcentral.com\/1471-2229\/14\/141\/abstract<\/a>.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

S\u1ef1 ghi nh\u1edb stress l\u00e0 kh\u1ea3 n\u0103ng \u0111\u1eb7c bi\u1ec7t c\u1ee7a c\u00e2y l\u00e0m thay \u0111\u1ed5i s\u1ef1 \u0111\u00e1p \u1ee9ng sinh l\u00fd v\u00e0 phi\u00ean m\u00e3 c\u1ee7a ch\u00fang \u0111\u1ed1i v\u1edbi stress tr\u01b0\u1edbc khi ch\u00fang b\u1ecb g\u00e2y h\u1ea1i. \u0110\u0103ng ng\u00e0y 01-06-2014 trong chuy\u00ean m\u1ee5c Tin th\u1ebf gi\u1edbi Trong c\u00e2y Arabidopsis thaliana, n\u00f3 th\u1ec3 hi\u1ec7n s\u1ef1 h\u00e0nh \u0111\u1ed9ng c\u00f3 t\u00ednh ch\u1ea5t […]\n","protected":false},"author":1,"featured_media":1757,"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\/1745"}],"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=1745"}],"version-history":[{"count":0,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/1745\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media\/1757"}],"wp:attachment":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media?parent=1745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/categories?post=1745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/tags?post=1745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}