{"id":15227,"date":"2021-04-30T10:39:51","date_gmt":"2021-04-30T10:39:51","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=15227"},"modified":"2021-04-30T10:39:51","modified_gmt":"2021-04-30T10:39:51","slug":"ancient-roundworms-resurrected-from-permafrost","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/cryobiology\/ancient-roundworms-resurrected-from-permafrost\/","title":{"rendered":"Ph\u00e1 v\u1ee1 k\u1ef7 l\u1ee5c: H\u1ed3i sinh th\u00e0nh c\u00f4ng giun tr\u00f2n c\u1ed5 \u0111\u1ea1i t\u1eeb l\u1edbp b\u0103ng v\u0129nh c\u1eedu 40.000 n\u0103m tu\u1ed5i"},"content":{"rendered":"

Giun tr\u00f2n c\u1ed5 \u0111\u1ea1i h\u1ed3i sinh t\u1eeb l\u1edbp b\u0103ng gi\u00e1 v\u0129nh c\u1eedu c\u1ee7a Nga<\/h2>\n\n

Ph\u00e1t hi\u1ec7n \u0111\u1ed9t ph\u00e1<\/h2>\n\n

C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 c\u00f3 m\u1ed9t kh\u00e1m ph\u00e1 mang t\u00ednh \u0111\u1ed9t ph\u00e1 \u1edf l\u1edbp b\u0103ng gi\u00e1 v\u0129nh c\u1eedu Siberia: h\u1ed3i sinh th\u00e0nh c\u00f4ng hai con giun tr\u00f2n c\u1ed5 \u0111\u1ea1i, hay c\u00f2n g\u1ecdi l\u00e0 giun tuy\u1ebfn tr\u00f9ng, \u0111\u00e3 b\u1ecb \u0111\u00f3ng b\u0103ng kho\u1ea3ng 40.000 n\u0103m. Chi\u1ebfn c\u00f4ng \u0111\u00e1ng kinh ng\u1ea1c n\u00e0y \u0111\u00e3 ph\u00e1 v\u1ee1 k\u1ef7 l\u1ee5c tr\u01b0\u1edbc \u0111\u00f3 v\u1ec1 th\u1eddi gian d\u00e0i nh\u1ea5t m\u00e0 m\u1ed9t lo\u00e0i \u0111\u1ed9ng v\u1eadt s\u1ed1ng s\u00f3t sau khi \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n \u0111\u00f4ng l\u1ea1nh.<\/p>\n\n

Ph\u00e1t hi\u1ec7n n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi m\u1ed9t nh\u00f3m c\u00e1c nh\u00e0 khoa h\u1ecdc ng\u01b0\u1eddi Nga h\u1ee3p t\u00e1c v\u1edbi \u0110\u1ea1i h\u1ecdc Princeton. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e2n t\u00edch h\u01a1n 300 m\u1eabu \u0111\u1ea5t l\u1ea5y t\u1eeb l\u1edbp b\u0103ng gi\u00e1 v\u0129nh c\u1eedu \u1edf B\u1eafc C\u1ef1c v\u00e0 t\u00ecm th\u1ea5y hai m\u1eabu giun tuy\u1ebfn tr\u00f9ng c\u00f3 kh\u1ea3 n\u0103ng s\u1ed1ng. M\u1ed9t m\u1eabu \u0111\u1ebfn t\u1eeb hang c\u1ee7a m\u1ed9t con s\u00f3c c\u00f3 ni\u00ean \u0111\u1ea1i 32.000 n\u0103m, v\u00e0 m\u1eabu c\u00f2n l\u1ea1i \u0111\u1ebfn t\u1eeb m\u1ed9t l\u1edbp b\u0103ng t\u00edch t\u1ee5 g\u1ea7n S\u00f4ng Alazeya c\u00f3 ni\u00ean \u0111\u1ea1i 41.700 n\u0103m.<\/p>\n\n

R\u00e3 \u0111\u00f4ng v\u00e0 h\u1ed3i sinh<\/h2>\n\n

Ban \u0111\u1ea7u, c\u00e1c con giun tuy\u1ebfn tr\u00f9ng \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n \u1edf nhi\u1ec7t \u0111\u1ed9 -20 \u0111\u1ed9 C. Sau \u0111\u00f3, ch\u00fang \u0111\u01b0\u1ee3c r\u00e3 \u0111\u00f4ng trong m\u1ed9t \u0111\u0129a petri c\u00f9ng v\u1edbi m\u00f4i tr\u01b0\u1eddng nu\u00f4i c\u1ea5y phong ph\u00fa \u0111\u1ec3 th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a ch\u00fang. Sau nhi\u1ec1u tu\u1ea7n trong m\u00f4i tr\u01b0\u1eddng m\u1edbi n\u00e0y, th\u1eadt \u0111\u00e1ng kinh ng\u1ea1c khi nh\u1eefng con giun tuy\u1ebfn tr\u00f9ng b\u1eaft \u0111\u1ea7u di chuy\u1ec3n v\u00e0 \u0103n u\u1ed1ng.<\/p>\n\n

C\u01a1 ch\u1ebf th\u00edch nghi<\/h2>\n\n

C\u00e1c nh\u00e0 khoa h\u1ecdc tin r\u1eb1ng nh\u1eefng con giun tuy\u1ebfn tr\u00f9ng s\u1edf h\u1eefu c\u00e1c c\u01a1 ch\u1ebf th\u00edch nghi \u0111\u1ed9c \u0111\u00e1o cho ph\u00e9p ch\u00fang s\u1ed1ng s\u00f3t sau qu\u00e1 tr\u00ecnh b\u1ea3o qu\u1ea3n \u0111\u00f4ng l\u1ea1nh trong m\u1ed9t th\u1eddi gian d\u00e0i nh\u01b0 v\u1eady. Nh\u1eefng c\u01a1 ch\u1ebf n\u00e0y c\u00f3 th\u1ec3 c\u00f3 \u00fd ngh\u0129a quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 y h\u1ecdc \u0111\u00f4ng l\u1ea1nh, sinh h\u1ecdc \u0111\u00f4ng l\u1ea1nh v\u00e0 sinh h\u1ecdc v\u0169 tr\u1ee5.<\/p>\n\n

M\u1ed1i lo ng\u1ea1i v\u1ec1 \u00f4 nhi\u1ec5m<\/h2>\n\n

M\u1ed9t s\u1ed1 ng\u01b0\u1eddi ho\u00e0i nghi \u0111\u00e3 b\u00e0y t\u1ecf m\u1ed1i lo ng\u1ea1i v\u1ec1 kh\u1ea3 n\u0103ng b\u1ecb \u00f4 nhi\u1ec5m b\u1edfi c\u00e1c sinh v\u1eadt \u0111\u01b0\u01a1ng th\u1eddi. Tuy nhi\u00ean, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 tu\u00e2n th\u1ee7 c\u00e1c quy tr\u00ecnh nghi\u00eam ng\u1eb7t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o v\u00f4 tr\u00f9ng v\u00e0 l\u1eadp lu\u1eadn r\u1eb1ng \u0111\u1ed9 s\u00e2u m\u00e0 nh\u1eefng con giun tuy\u1ebfn tr\u00f9ng \u0111\u01b0\u1ee3c ch\u00f4n (30 m\u00e9t v\u00e0 4,5 m\u00e9t d\u01b0\u1edbi b\u1ec1 m\u1eb7t) khi\u1ebfn kh\u1ea3 n\u0103ng \u00f4 nhi\u1ec5m l\u00e0 r\u1ea5t kh\u00f3 x\u1ea3y ra.<\/p>\n\n

\u00dd ngh\u0129a \u0111\u1ed1i v\u1edbi sinh h\u1ecdc \u0111\u00f4ng l\u1ea1nh<\/h2>\n\n

Vi\u1ec7c h\u1ed3i sinh c\u00e1c sinh v\u1eadt \u0111a b\u00e0o \u0111\u00e1nh d\u1ea5u m\u1ed9t c\u1ed9t m\u1ed1c quan tr\u1ecdng trong sinh h\u1ecdc \u0111\u00f4ng l\u1ea1nh. N\u00f3 ch\u1ee9ng minh ti\u1ec1m n\u0103ng b\u1ea3o qu\u1ea3n \u0111\u00f4ng l\u1ea1nh d\u00e0i h\u1ea1n \u0111\u1ed1i v\u1edbi c\u00e1c sinh v\u1eadt s\u1ed1ng. Kh\u00e1m ph\u00e1 n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng ti\u1ebfn b\u1ed9 trong vi\u1ec7c b\u1ea3o t\u1ed3n c\u00e1c lo\u00e0i c\u00f3 nguy c\u01a1 tuy\u1ec7t ch\u1ee7ng v\u00e0 th\u1eadm ch\u00ed h\u1ed3i sinh c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt \u0111\u00e3 tuy\u1ec7t ch\u1ee7ng.<\/p>\n\n

\u00dd ngh\u0129a ti\u1ebfn h\u00f3a<\/h2>\n\n

Nh\u1eefng con giun tuy\u1ebfn tr\u00f9ng c\u1ed5 \u0111\u1ea1i mang \u0111\u1ebfn m\u1ed9t c\u01a1 h\u1ed9i \u0111\u1ed9c \u0111\u00e1o \u0111\u1ec3 nghi\u00ean c\u1ee9u qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a c\u1ee7a lo\u00e0i ch\u00fang trong h\u00e0ng ch\u1ee5c ngh\u00ecn n\u0103m. C\u00e1c nh\u00e0 khoa h\u1ecdc r\u1ea5t mu\u1ed1n so s\u00e1nh c\u1ea5u tr\u00fac di truy\u1ec1n c\u1ee7a nh\u1eefng con giun tuy\u1ebfn tr\u00f9ng c\u1ed5 \u0111\u1ea1i v\u1edbi nh\u1eefng lo\u00e0i \u0111\u01b0\u01a1ng th\u1eddi c\u1ee7a ch\u00fang \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh b\u1ea5t k\u1ef3 s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 n\u00e0o v\u1ec1 m\u1eb7t ti\u1ebfn h\u00f3a.<\/p>\n\n

Nghi\u00ean c\u1ee9u trong t\u01b0\u01a1ng lai<\/h2>\n\n

M\u1eb7c d\u00f9 nh\u1eefng tuy\u00ean b\u1ed1 v\u1ec1 s\u1ef1 h\u1ed3i sinh c\u1ee7a giun tuy\u1ebfn tr\u00f9ng c\u1ed5 \u0111\u1ea1i r\u1ea5t h\u1ee9a h\u1eb9n, nh\u01b0ng c\u1ea7n ph\u1ea3i ti\u1ebfn h\u00e0nh th\u00eam c\u00e1c th\u1eed nghi\u1ec7m \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c tu\u1ed5i c\u1ee7a nh\u1eefng con giun n\u00e0y v\u00e0 x\u00e1c th\u1ef1c nh\u1eefng ph\u00e1t hi\u1ec7n n\u00e0y. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111ang l\u00ean k\u1ebf ho\u1ea1ch th\u1ef1c hi\u1ec7n c\u00e1c th\u00ed nghi\u1ec7m b\u1ed5 sung \u0111\u1ec3 x\u00e1c nh\u1eadn t\u00ednh x\u00e1c th\u1ef1c c\u1ee7a nh\u1eefng con giun tuy\u1ebfn tr\u00f9ng v\u00e0 kh\u00e1m ph\u00e1 nh\u1eefng \u00fd ngh\u0129a ti\u1ec1m \u1ea9n c\u1ee7a ch\u00fang \u0111\u1ed1i v\u1edbi sinh h\u1ecdc \u0111\u00f4ng l\u1ea1nh v\u00e0 ti\u1ebfn h\u00f3a.<\/p>\n\n

Gi\u1ea5c m\u01a1 h\u1ed3i sinh k\u1ef7 Pleistocene<\/h2>\n\n

Kh\u00e1m ph\u00e1 v\u1ec1 nh\u1eefng con giun tr\u00f2n c\u1ed5 \u0111\u1ea1i n\u00e0y \u0111\u00e3 kh\u01a1i d\u1eady gi\u1ea5c m\u01a1 v\u1ec1 s\u1ef1 h\u1ed3i sinh c\u1ee7a k\u1ef7 Pleistocene. M\u1eb7c d\u00f9 vi\u1ec7c h\u1ed3i sinh c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt \u0111\u00e3 tuy\u1ec7t ch\u1ee7ng nh\u01b0 voi ma m\u00fat l\u00f4ng xo\u0103n v\u1eabn c\u00f2n l\u00e0 m\u1ed9t kh\u1ea3 n\u0103ng xa v\u1eddi, nh\u01b0ng s\u1ef1 tr\u1edf l\u1ea1i c\u1ee7a nh\u1eefng con giun tuy\u1ebfn tr\u00f9ng c\u1ed5 \u0111\u1ea1i n\u00e0y cho ch\u00fang ta c\u00e1i nh\u00ecn tho\u00e1ng qua v\u1ec1 ti\u1ec1m n\u0103ng \u0111\u01b0a nh\u1eefng sinh v\u1eadt \u0111\u00e3 m\u1ea5t t\u1eeb l\u00e2u tr\u1edf l\u1ea1i cu\u1ed9c s\u1ed1ng.<\/p>","protected":false},"excerpt":{"rendered":"

Giun tr\u00f2n c\u1ed5 \u0111\u1ea1i h\u1ed3i sinh t\u1eeb l\u1edbp b\u0103ng gi\u00e1 v\u0129nh c\u1eedu c\u1ee7a Nga Ph\u00e1t hi\u1ec7n \u0111\u1ed9t ph\u00e1 C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 c\u00f3 m\u1ed9t kh\u00e1m ph\u00e1 mang t\u00ednh \u0111\u1ed9t…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20303],"tags":[4739,6156,20301,16943,20302,136],"class_list":["post-15227","post","type-post","status-publish","format-standard","hentry","category-cryobiology","tag-permafrost","tag-nematodes","tag-ancient-roundworms","tag-cryobiology","tag-resurrection","tag-evolution"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/15227","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=15227"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/15227\/revisions"}],"predecessor-version":[{"id":15228,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/15227\/revisions\/15228"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=15227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=15227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=15227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}