Umbungu Wamandulo WaseSiberia Wabuyela Ebomini Emva kweminyaka engama-46,000, Waza Waqalisa Ukuzala!

Ingxelo evela kwi- Washington Post inika iinkcukacha ngophando olumangalisayo olufunyenwe zizazinzulu: intshulube eyimikroskopu ebhinqileyo yayigcinwe kwi-permafrost yaseSiberia iminyaka engama-46,000, kwaye xa bayivuselelayo, isidalwa saqala ukuzala nge-parthenogenesis - inkqubo engadingi qabane.

Umbungu wamandulo waseSiberia waphinda waphila emva kweminyaka engama-46,000 1, waza waqalisa ukuzala! XNUMX — Indawo yophononongo: a) indawo yeDuvanny Yar outcrope kuMlambo iKolyma, kumntla-mpuma weSiberia, eRashiya. b) Imbonakalo yendawo engaphezulu ye-outcrop eyenziwe yi-ice wedges kunye ne-permafrost silty deposits. c) i-lithostratigraphic scheme of deposits, ebonisa indawo ye-rodent borrow (isangqa esibomvu). d) umngxuma weempuku zefosili enenkunkuma enezityalo kunye nembewu engcwatywe kwidiphozithi ye-permafrost; (m arl = iimitha ngaphezu komlambo). PLOS Genetics

The IYunivesithi yaseHawaiʻi eManoa's ushicilelo lwaxoxa ngento ephilayo eyayikwi-dormancy ende ebizwa ngokuba yi-cryptobiosis kangangamawaka eminyaka. Esi simo, esinokugcinwa ixesha elide, simisa zonke iinkqubo zemetabolism, kubandakanywa ukuzala, ukuphuhliswa, kunye nokulungiswa.

Kwi Ijenali ye-PLOS yeGenetics epapashwe ngoLwesine, abaphandi bachonge uhlobo olutsha lweentshulube ngokusekwe kulandelelwano lwegenome. Batsho ukuba lo mbungu awuzange uhlelwe ngaphambili.

Kutshanje kuxelwe ngu Sayensi ephilayo ukuba nematodes ezifana I-Plectus murrayi kwaye Tylenchus polyhypnus iye yavuselelwa kwi-moss kunye ne-herbarium specimens emva kwamashumi ambalwa eminyaka. Uhlobo olutsha, Panagrolamus kolymaensis, noko ke, yayikwibuthongo amashumi amawaka eminyaka.

Umbungu wamandulo waseSiberia waphinda waphila emva kweminyaka engama-46,000 2, waza waqalisa ukuzala! XNUMX — Imazi yohlobo lwe-P. kolymaensis ine-morphology jikelele eboniswe apha. PLOS Genetics

UHolly Bik, isazi sebhayoloji enzulu elwandle, ukholelwa ukuba izigidi zeentlobo ezahlukeneyo zemibungu ye-nematode inokufunyanwa kwiindawo ezahlukeneyo zokuhlala, njengemisele yolwandle, iitundra, iintlango, kunye nomhlaba wentaba-mlilo. Noko ke, kwezi, zizilwanyana zaselwandle ezingama-5,000 XNUMX kuphela eziye zabhalwa ngabaphandi.

UCrow, isazi ngezifo kwiYunivesithi yaseFlorida owayengadityaniswanga kuphando, ucebise kwiPosi ukuba lo mbungu inokuba luhlobo olwathi shwaka kwiminyaka engaphambili engama-50,000.

U-Crow uhlomle ngelithi kunokwenzeka ukuba i-nematode yileyo kusafuneka ichazwe, njengoko idibana rhoqo.

Izazinzulu kudala zisazi ukuba izidalwa ezingephi, njengaleyo iphononongwayo, zinamandla okuyeka ukusebenza ukuze zikwazi ukunyamezela nakwezona meko zinzima, kungoko kungakhothulwa kukusinda kombungu kuyo yonke loo minyaka, njengoko kuchaziwe. kushicilelo lweendaba.

The Iphepha le-PLOS Genetics Ugqibe kwelokuba iinematodes zinamandla anokuthi zikwazi ukuphila ixesha elide lejoloji.

UMSEBENZI WOKUBHALA