{"id":8019,"date":"2018-02-02T15:55:12","date_gmt":"2018-02-02T08:55:12","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=8019"},"modified":"2018-02-02T15:55:12","modified_gmt":"2018-02-02T08:55:12","slug":"lan-dau-tien-cac-nha-khoa-hoc-quan-sat-truc-tiep-vi-khuan-song-trong-bang-tuyet-vung-cuc","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/lan-dau-tien-cac-nha-khoa-hoc-quan-sat-truc-tiep-vi-khuan-song-trong-bang-tuyet-vung-cuc\/","title":{"rendered":"L\u1ea7n \u0111\u1ea7u ti\u00ean, c\u00e1c nh\u00e0 khoa h\u1ecdc quan s\u00e1t tr\u1ef1c ti\u1ebfp vi khu\u1ea9n s\u1ed1ng trong b\u0103ng tuy\u1ebft v\u00f9ng c\u1ef1c"},"content":{"rendered":"<p><img decoding=\"async\" class=\"aligncenter\" src=\"http:\/\/khoahocvacongnghevietnam.com.vn\/images\/stories\/thang-1-2018\/171-lan.jpg\" alt=\"171 lan\" \/><strong><br \/>\n<\/strong><\/p>\n<p>L\u1ea7n \u0111\u1ea7u ti\u00ean, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 tr\u1ef1c ti\u1ebfp quan s\u00e1t c\u00e1c vi khu\u1ea9n s\u1ed1ng trong b\u0103ng tuy\u1ebft v\u00f9ng c\u1ef1c, m\u00f4i tr\u01b0\u1eddng t\u1eebng \u0111\u01b0\u1ee3c coi l\u00e0 v\u00f4 tr\u00f9ng. B\u1eb1ng ch\u1ee9ng m\u1edbi c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m thay \u0111\u1ed5i nh\u1eadn th\u1ee9c v\u1ec1 nh\u1eefng h\u00e0nh tinh trong v\u0169 tr\u1ee5 c\u00f3 th\u1ec3 duy tr\u00ec s\u1ef1 s\u1ed1ng v\u00e0 \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c con ng\u01b0\u1eddi g\u00e2y t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn n\u1ed3ng \u0111\u1ed9 CO<sub>2<\/sub>\u00a0trong b\u1ea7u kh\u00ed quy\u1ec3n c\u1ee7a Tr\u00e1i \u0111\u1ea5t th\u1eadm ch\u00ed l\u1edbn h\u01a1n b\u1eb1ng ch\u1ee9ng m\u00e0 c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 l\u00f5i b\u0103ng trong l\u1ecbch s\u1eed kh\u00ed h\u1eadu \u0111\u01b0a ra.<\/p>\n<p>&nbsp;<\/p>\n<p>C\u00e1c kh\u00ed \u0111\u00e3 \u0111\u01b0\u1ee3c thu v\u00e0 l\u01b0u gi\u1eef trong tuy\u1ebft khi tuy\u1ebft \u0111\u01b0\u1ee3c n\u00e9n th\u00e0nh b\u0103ng, c\u00f3 th\u1ec3 cung c\u1ea5p cho c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u nh\u1eefng h\u00ecnh \u1ea3nh v\u1ec1 b\u1ea7u kh\u00ed quy\u1ec3n Tr\u00e1i \u0111\u1ea5t c\u00e1ch \u0111\u00e2y h\u00e0ng tr\u0103m ngh\u00ecn n\u0103m. C\u00e1c nh\u00e0 khoa h\u1ecdc kh\u00ed h\u1eadu s\u1eed d\u1ee5ng c\u00e1c m\u1eabu l\u00f5i b\u0103ng \u0111\u1ec3 nghi\u00ean c\u1ee9u n\u1ed3ng \u0111\u1ed9 CO<sub>2<\/sub>\u00a0trong kh\u00ed quy\u1ec3n th\u1eddi ti\u1ec1n s\u1eed \u0111\u1ec3 c\u00f3 th\u1ec3 so s\u00e1nh v\u1edbi n\u1ed3ng \u0111\u1ed9 CO<sub>2<\/sub>\u00a0hi\u1ec7n nay trong th\u1eddi \u0111\u1ea1i c\u00f4ng nghi\u1ec7p.<\/p>\n<p>Ph\u00e2n t\u00edch c\u00e1c l\u00f5i b\u0103ng d\u1ef1a v\u00e0o gi\u1ea3 thuy\u1ebft cho r\u1eb1ng ho\u1ea1t t\u00ednh sinh h\u1ecdc h\u1ea1n ch\u1ebf l\u00e0m thay \u0111\u1ed5i m\u00f4i tr\u01b0\u1eddng c\u1ee7a tuy\u1ebft trong qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i th\u00e0nh b\u0103ng. Trong nghi\u00ean c\u1ee9u, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 quan s\u00e1t tr\u1ef1c ti\u1ebfp ho\u1ea1t \u0111\u1ed9ng c\u1ee7a vi khu\u1ea9n trong tuy\u1ebft \u1edf Nam c\u1ef1c v\u00e0 B\u1eafc c\u1ef1c v\u00e0 k\u1ebft qu\u1ea3 cho th\u1ea5y th\u00e0nh ph\u1ea7n c\u1ee7a c\u00e1c m\u1eabu kh\u00ed nh\u1ecf b\u1ecb m\u1eafc k\u1eb9t trong b\u0103ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thay \u0111\u1ed5i b\u1edfi vi khu\u1ea9n v\u1eabn ho\u1ea1t \u0111\u1ed9ng trong tuy\u1ebft trong khi tuy\u1ebft \u0111\u01b0\u1ee3c n\u00e9n th\u00e0nh b\u0103ng, qu\u00e1 tr\u00ecnh n\u00e0y c\u00f3 th\u1ec3 k\u00e9o d\u00e0i h\u00e0ng th\u1eadp k\u1ef7.<\/p>\n<p>Ts. Kelly Redeker, tr\u01b0\u1edfng nh\u00f3m nghi\u00ean c\u1ee9u cho r\u1eb1ng: Do ho\u1ea1t \u0111\u1ed9ng c\u1ee7a vi khu\u1ea9n v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a vi khu\u1ea9n \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng c\u1ee5c b\u1ed9 kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c t\u00ednh \u0111\u1ebfn khi xem x\u00e9t c\u00e1c m\u1eabu kh\u00ed trong l\u00f5i b\u0103ng, nh\u01b0ng l\u1ea1i c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn sai s\u00f3t trong vi\u1ec7c gi\u1ea3i th\u00edch v\u1ec1 l\u1ecbch s\u1eed kh\u00ed h\u1eadu. H\u00f4 h\u1ea5p c\u1ee7a vi khu\u1ea9n c\u00f3 th\u1ec3 \u0111\u00e3 l\u00e0m t\u0103ng nh\u1eb9 n\u1ed3ng \u0111\u1ed9 CO<sub>2<\/sub>\u00a0trong c\u00e1c t\u00fai kh\u00ed m\u1eafc k\u1eb9t trong c\u00e1c m\u0169 b\u0103ng c\u1ef1c, ngh\u0129a l\u00e0 tr\u01b0\u1edbc khi c\u00f3 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a con ng\u01b0\u1eddi, n\u1ed3ng \u0111\u1ed9 CO<sub>2<\/sub>\u00a0th\u1eadm ch\u00ed th\u1ea5p h\u01a1n so v\u1edbi m\u1ee9c \u0111\u01b0\u1ee3c nh\u1eadn \u0111\u1ecbnh tr\u01b0\u1edbc \u0111\u00e2y. Ngo\u00e0i ra, th\u1ef1c t\u1ebf l\u00e0 ch\u00fang t\u00f4i \u0111\u00e3 quan s\u00e1t vi khu\u1ea9n trao \u0111\u1ed5i ch\u1ea5t trong h\u1ea7u h\u1ebft b\u0103ng v\u00e0 tuy\u1ebft th\u1eddi xa x\u01b0a l\u00e0 d\u1ea5u hi\u1ec7u c\u1ee7a s\u1ef1 s\u1ed1ng sinh s\u00f4i trong m\u00f4i tr\u01b0\u1eddng n\u01a1i b\u1ea1n kh\u00f4ng ngh\u0129 c\u00f3 n\u00f3 kh\u00f4ng t\u1ed3n t\u1ea1i. \u0110i\u1ec1u \u0111\u00f3 cho th\u1ea5y ch\u00fang t\u00f4i c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng t\u1ea7m nh\u00ecn trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh h\u00e0nh tinh n\u00e0o c\u00f3 kh\u1ea3 n\u0103ng duy tr\u00ec s\u1ef1 s\u1ed1ng.<\/p>\n<p>Nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh trong ph\u00f2ng th\u00ed nghi\u1ec7m, tr\u01b0\u1edbc \u0111\u00e2y \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng vi khu\u1ea9n c\u00f3 th\u1ec3 s\u1ed1ng s\u00f3t trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 c\u1ef1c l\u1ea1nh, nh\u01b0ng \u0111\u00e2y l\u00e0 nghi\u00ean c\u1ee9u \u0111\u1ea7u ti\u00ean vi khu\u1ea9n \u0111\u01b0\u1ee3c quan s\u00e1t l\u00e0m thay \u0111\u1ed5i t\u1ea1i ch\u1ed7 m\u00f4i tr\u01b0\u1eddng tuy\u1ebft v\u00f9ng c\u1ef1c.<\/p>\n<p>C\u00e1c t\u00e1c gi\u1ea3 \u0111\u00e3 nghi\u00ean c\u1ee9u tuy\u1ebft \u1edf tr\u1ea1ng th\u00e1i t\u1ef1 nhi\u00ean v\u00e0 trong nh\u1eefng khu v\u1ef1c kh\u00e1c tuy\u1ebft \u0111\u00e3 \u0111\u01b0\u1ee3c v\u00f4 tr\u00f9ng b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u0111\u00e8n c\u1ef1c t\u00edm. Khi so s\u00e1nh c\u00e1c k\u1ebft qu\u1ea3, nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e1t hi\u1ec7n th\u1ea5y n\u1ed3ng \u0111\u1ed9 methyl iodide b\u1ea5t ng\u1edd &#8211; m\u1ed9t lo\u1ea1i kh\u00ed \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1edfi vi khu\u1ea9n bi\u1ec3n &#8211; trong tuy\u1ebft kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng. C\u00e1c k\u1ef9 thu\u1eadt ti\u00ean ti\u1ebfn cho ph\u00e9p ph\u00e1t hi\u1ec7n s\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a c\u00e1c kh\u00ed th\u1eadm ch\u00ed \u1edf m\u1ee9c m\u1ed9t ph\u1ea7n ngh\u00ecn t\u1ef7, \u00edt h\u01a1n 1 tri\u1ec7u l\u1ea7n n\u1ed3ng \u0111\u1ed9 CO<sub>2<\/sub>\u00a0trong kh\u00ed quy\u1ec3n.<\/p>\n<p>C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 nghi\u00ean c\u1ee9u nhi\u1ec1u v\u1ecb tr\u00ed \u1edf B\u1eafc c\u1ef1c v\u00e0 Nam c\u1ef1c v\u00e0 \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba \u0111\u1ec3 h\u1ea1n ch\u1ebf t\u00e1c \u0111\u1ed9ng c\u1ee7a \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi v\u00e0 gi\u00f3 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng v\u1ea3i nh\u1ef1a \u0111\u1ec3 che c\u00e1c \u0111\u1ecba \u0111i\u1ec3m l\u1ea5y m\u1eabu v\u00e0 ti\u1ebfn h\u00e0nh l\u1ea5y m\u1eabu \u1edf gi\u1eefa m\u1ed9t s\u00f4ng b\u0103ng c\u00e1ch xa v\u00f9ng \u0111\u1ea5t v\u00e0 c\u00e1c d\u1ea1ng kh\u00e1c c\u1ee7a \u0111\u1eddi s\u1ed1ng hoa d\u00e3 \u1edf v\u00f9ng c\u1ef1c c\u00f3 th\u1ec3 g\u00e2y \u00f4 nhi\u1ec5m tuy\u1ebft. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u0169ng cho th\u1ea5y, s\u1ef1 s\u1ed1ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c duy tr\u00ec th\u1eadm ch\u00ed \u1edf c\u00e1c m\u00f4i tr\u01b0\u1eddng xa x\u00f4i, l\u1ea1nh gi\u00e1, thi\u1ebfu d\u01b0\u1ee1ng ch\u1ea5t, \u0111\u1eb7t ra v\u1ea5n \u0111\u1ec1 li\u1ec7u c\u00e1c h\u00e0nh tinh l\u1ea1nh gi\u00e1 c\u1ee7a v\u0169 tr\u1ee5 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c vi sinh v\u1eadt hay kh\u00f4ng.<\/p>\n<p>C\u00e1c nh\u00e0 sinh v\u1eadt v\u0169 tr\u1ee5 \u0111ang nghi\u00ean c\u1ee9u th\u00eam \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c h\u00e0nh tinh trong v\u0169 tr\u1ee5 \u0111\u1ea3m b\u1ea3o m\u1ee9c nhi\u1ec7t cho ph\u00e9p n\u01b0\u1edbc \u1edf d\u1ea1ng l\u1ecfng xu\u1ea5t hi\u1ec7n, s\u1ebd c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng nh\u1eefng khu v\u1ef1c m\u00e0 h\u1ecd cho l\u00e0 c\u00f3 s\u1ef1 s\u1ed1ng, bao g\u1ed3m c\u00e1c h\u00e0nh tinh n\u01a1i n\u01b0\u1edbc \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y d\u01b0\u1edbi d\u1ea1ng b\u0103ng.<\/p>\n<p>Nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed Royal Society Interface.<\/p>\n<p style=\"text-align: right;\"><em>(Vista)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u1ea7n \u0111\u1ea7u ti\u00ean, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 tr\u1ef1c ti\u1ebfp quan s\u00e1t c\u00e1c vi khu\u1ea9n s\u1ed1ng trong b\u0103ng tuy\u1ebft v\u00f9ng c\u1ef1c, m\u00f4i tr\u01b0\u1eddng t\u1eebng \u0111\u01b0\u1ee3c coi l\u00e0 v\u00f4 tr\u00f9ng. B\u1eb1ng ch\u1ee9ng m\u1edbi c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m thay \u0111\u1ed5i nh\u1eadn th\u1ee9c v\u1ec1 nh\u1eefng h\u00e0nh tinh trong v\u0169 tr\u1ee5 c\u00f3 th\u1ec3 duy tr\u00ec s\u1ef1 s\u1ed1ng v\u00e0 \u0111\u1ed3ng [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":8020,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-8019","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/8019","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=8019"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/8019\/revisions"}],"predecessor-version":[{"id":8205,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/8019\/revisions\/8205"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/8020"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=8019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=8019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=8019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}