\nAnaliza a eviden\u0163iat 310 specii de bacterii care tr\u0103iau \u00een organismul mamu\u0163ilor, inclusiv tulpini patogene asem\u0103n\u0103toare cu cele care provoac\u0103 septicemie la elefan\u0163ii africani moderni. Cercet\u0103torii au reconstruit, de asemenea, genomurile bacteriei Erysipelothrix dintr-un mamut de step\u0103 vechi de 1,1 milioane de ani \u2014 cea mai veche dovad\u0103 de ADN microbian asociat unei gazde descoperit\u0103 p\u00e2n\u0103 acum.<\/p>\n
\n\u201eAceast\u0103 descoperire ne permite s\u0103 \u00een\u0163elegem mai bine interac\u0163iunile dintre microbii antici \u015fi animalele preistorice \u015fi ofer\u0103 o fereastr\u0103 unic\u0103 asupra s\u0103n\u0103t\u0103\u0163ii \u015fi adapt\u0103rii lor\u201d, a declarat Benjamin Guinet, paleomicrobiolog la Centrul pentru Paleogenetic\u0103 din Stockholm.<\/p>\n
\nStudiul, publicat mar\u0163i \u00een revista Cell, cuprinde probe provenind din 483 de mamu\u0163i, dat\u00e2nd din Pleistocenul timpuriu p\u00e2n\u0103 la dispari\u0163ia ultimelor exemplare de pe Insula Wrangel, acum 4.000 de ani. Analiza genetic\u0103 sugereaz\u0103 c\u0103 anumite bacterii au fost parte din microbiomul oral \u015fi osos al mamu\u0163ilor, influen\u0163\u00e2nd s\u0103n\u0103tatea \u015fi supravie\u0163uirea acestora.<\/p>\n
\nAceste descoperiri deschid calea pentru cercet\u0103ri viitoare asupra microbiomelor antice \u015fi a impactului lor asupra evolu\u0163iei \u015fi extinc\u0163iei speciilor. \u201eVrem s\u0103 deschidem cartea vie\u0163ii \u015fi s\u0103 extindem limitele a ceea ce putem \u015fti despre trecutul biologic\u201d, a ad\u0103ugat Guinet.<\/p>\n","protected":false},"excerpt":{"rendered":"
O echip\u0103 de cercet\u0103tori a identificat cel mai vechi ADN microbian asociat gazdei \u00eenregistrat vreodat\u0103, \u00een probe prelevate din din\u0163i \u015fi oase ale mamutului l\u00e2nos \u015fi ale mamutului de step\u0103, oferind primele informa\u0163ii despre microbiomele animalelor preistorice.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[510],"tags":[6070,61179,7853],"class_list":["post-239897","post","type-post","status-publish","format-standard","hentry","category-actualitate","tag-adn","tag-mamuti","tag-studiu"],"_links":{"self":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/239897","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=239897"}],"version-history":[{"count":0,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/239897\/revisions"}],"wp:attachment":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=239897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=239897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=239897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}