Hadesarchaea

Come leggere il tassoboxProgetto:Forme di vita/Come leggere il tassobox
Come leggere il tassobox
Archaeoglobi
Immagine di Hadesarchaea mancante
Classificazione scientifica
DominioProkaryota
RegnoArchaea
PhylumEuryarchaeota
ClasseHadesarchae

Gli Hadesarchaea o SAGMEG (South-African Gold Mine Miscellaneous Euryarchaeal Group) sono un gruppo di archei scoperti da Carl Woese in una miniera d'oro in Sudafrica a 3 km di profondità.[1] Essi si trovano in profondità rispetto alla superficie della terra; diedero il nome dalla musa greca Aede Baker dell'Università del Texas ad Austin et al. nel 2016.[2][3][4]

Poco noti, sono oggetto di studi pionieristici, e si conosce il fatto che sfruttano come fonte di energia il monossido di carbonio (CO) in anaerobiosi stretta; hanno inoltre la capacità di accoppiamento nella riduzione dei nitriti ad ammoniaca (DNRA).

Sono estremamente difficili da coltivare in laboratorio.[4]

Data al 2016 l'isolamento di questi batteri in due distinti luoghi negli USA, in terreni sedimentali con sequenziamento metagenomico: nell'estuario dell'White Oak River e nello Yellowstone National Park, dove insistono condizioni estreme per la vita con 70 °C e terreni altamente alcalini.[5]

Ciò ha permesso di ricostruire 4 genomi completi, utilizzando direttamente il genoma trovato in natura senza passaggi colturali in laboratorio.[6] Ciò ha mostrato che essi hanno un genoma relativamente semplice di circa 1,5 Mbp, il più piccolo tra tutti gli Archea noti,[7] e mostrando una certa similitudine genetica con il clade dei Thermococci.[8]

Note

  1. ^ Takai K, Moser DP, DeFlaun M, Onstott TC, Fredrickson JK, Archaeal diversity in waters from deep South African gold mines, in Appl. Environ. Microbiol., vol. 67, n. 12, 2001, pp. 5750–60, DOI:10.1128/AEM.67.21.5750-5760.2001, PMC 93369, PMID 11722932.
  2. ^ (EN) Hadesarchaea: a New Archaeal Class of Cosmopolitan Deep Microbes | Deep Carbon Observatory Portal, su deepcarbon.net, Deep Carbon Observatory Portal, 18 febbraio 2016. URL consultato il 26 febbraio 2016 (archiviato dall'url originale il 4 marzo 2016).
  3. ^ (EN) Università di Uppsala, Scientists discover new microbes that thrive deep in the earth, su phys.org.
  4. ^ a b Baker BJ, Comolli LR, Dick GJ, Hauser LJ, Hyatt D, Dill BD, Land ML, Verberkmoes NC, Hettich RL, Banfield JF, Enigmatic, ultrasmall, uncultivated Archaea, in Proc. Natl. Acad. Sci. U.S.A., vol. 107, n. 19, 2010, pp. 8806–11, DOI:10.1073/pnas.0914470107, PMC 2889320, PMID 20421484.
  5. ^ Matt Atherton, God of the underworld microbes Hadesarchaea discovered living on toxic gas deep below Yellowstone hot springs, su IB Times, 15 febbraio 2016. URL consultato il 25 febbraio 2016.
  6. ^ (EN) Aarhus University, Four cells turn seabed microbiology upside down, su phys.org, 27 marzo 2013.
  7. ^ Hadesarchaea: a New Archaeal Class of Cosmopolitan Deep Microbes, su deepcarbon.net, Deep Carbon Observatory, 18 febbraio 2016. URL consultato il 25 febbraio 2016 (archiviato dall'url originale il 4 marzo 2016).
  8. ^ Brett J. Baker et al., Letter: Genomic inference of the metabolism of cosmopolitan subsurface Archaea, Hadesarchaea Nature Microbiology Article doi:10.1038/nmicrobiol.2016.2

Bibliografia

Voci correlate

Collegamenti esterni

  • (EN) Hadesarchaea, su ncbi.nlm.nih.gov, www.ncbi.nlm.nih.gov.
  Portale Biologia

Read other articles:

Labu alas bulat

Labu alas bulat Labu alas bulat adalah jenis labu yang memiliki bagian alat yang berbentuk bulat dan dipakai sebagai perangkat kaca laboratorium, terutama untuk pengerjaan kimia atau biokimia.[1] Alat tersebut biasanya terbuat dari kaca. Referensi ^ OCS Lab Equipment: round Bottom Flask. Diarsipkan 2011-10-07 di Wayback Machine. Department of Chemistry. University of Nevada.

 

Charles Rosher

Charles RosherRosher pada 1921 dengan Mary PickfordLahir(1885-11-17)17 November 1885London, EnglandMeninggal15 Januari 1974(1974-01-15) (umur 88)Lisbon, PortugalPekerjaanCinematographerTahun aktif1912–1955GelarAnggota Pendiri A.S.C.PenghargaanSinematografi Terbaik1928 Sunrise: A Song of Two Humans (bersama dengan Karl Struss) 1946 The Yearling Charles G. Rosher, A.S.C. (17 November 1885 – 15 Januari 1974) adalah seorang sinematografer yang dua kali memenangkan Academy Award yan...

 

Fluorit

Artikel ini tidak memiliki referensi atau sumber tepercaya sehingga isinya tidak bisa dipastikan. Tolong bantu perbaiki artikel ini dengan menambahkan referensi yang layak. Tulisan tanpa sumber dapat dipertanyakan dan dihapus sewaktu-waktu.Cari sumber: Fluorit – berita · surat kabar · buku · cendekiawan · JSTOR Fluoritsebuah kristal fluoritUmumKategorimineral halidaRumus(unit berulang)CaF2Klasifikasi Strunz3.AB.25Sistem kristalisometrikSel unita =...

Nicolas Trigault

Nicolas Trigault mengenakan pakaian khas Tiongkok, karya Peter Paul Rubens. De Christiana expeditione apud Sinas, karya Nicolas Trigault dan Matteo Ricci, Augsburg, 1615. Nicolas Trigault (1577–1628) adalah seorang Yesuit Flemish, dan seorang misionaris di China. Ia juga dikenal dengan nama latin-nya yakni Trigautius atau Trigaultius, dan nama Mandarin-nya Jin Nige (Hanzi sederhana: 金尼阁; Hanzi tradisional: 金尼閣; Pinyin: Jīn Nígé). Kehidupan dan karya Lahir di Douai...

 

Crystal gazing

Method for seeing visions by gazing at a crystal For the lawn ornament, see Gazing ball. Crystal ball Crystal gazing or crystallomancy is a method for seeing visions achieved through trance induction by means of gazing at a crystal.[1] Traditionally, it has been seen as a form of divination or scrying, with visions of the future, something divine etc., though research into the content of crystal-visions suggest the visions are related to the expectations and thoughts of the seer. Meth...

 

Strengthen the Arm of Liberty Monument (Overland Park, Kansas)

Replica of the Statue of Liberty at Shawnee Mission North High School. Placard on base of statue The Strengthen the Arm of Liberty Monument in Overland Park, Kansas, is a replica of the Statue of Liberty (Liberty Enlightening the World). It was placed by the Boy Scouts of America as part of its 1950s era campaign, Strengthen the Arm of Liberty.[1] Background Strengthen the Arm of Liberty was the theme of the Boy Scouts of America's fortieth anniversary celebration in 1950.[2]...

豪栄道豪太郎

豪栄道 豪太郎 場所入りする豪栄道基礎情報四股名 澤井 豪太郎→豪栄道 豪太郎本名 澤井 豪太郎愛称 ゴウタロウ、豪ちゃん、GAD[1][2]生年月日 (1986-04-06) 1986年4月6日（38歳）出身 大阪府寝屋川市身長 183cm体重 160kgBMI 47.26所属部屋 境川部屋得意技 右四つ・出し投げ・切り返し・外掛け・首投げ・右下手投げ成績現在の番付 引退最高位 東大関生涯戦歴 696勝493敗...

 

Каталонская овчарка

Каталонская овчарка Длинношёрстная каталонская овчарка Происхождение Место  Испания Время XVIII век Рост кобели47—55 см суки45—53 см Масса кобели18 кг суки16 кг Классификация МКФ Группа 1. Пастушьи и скотогонные собаки, кроме швейцарских скотогонных собак Секция 1. Овчарки �...

 

Daniel Campbell (died 1753)

Scottish merchant, slave trader and politician Daniel Campbell (c. 1671 – 1753) was a Scottish merchant, slave trader and politician who sat in the British House of Commons representing the constituency of Clyde Burghs from 1716 to 1734. He was nicknamed Great Daniel due to his weight and personal fortune.[1] Dates Campbell was the eldest son of Walter Campbell of Skipnish, and was born about 1671. In many books of reference he is stated to have been born in 1696 and to have d...

New Holland Publishers

Australian publishing firm New Holland PublishersStatusActiveFounded1955 (1955)Country of originAustralia, & New ZealandHeadquarters locationLevel 1/178 Fox Valley RdWahroonga, 2076AustraliaDistributionRegency Media Group (Australia)Bookreps (New Zealand)[1]Midpoint Trade Books (US)[2]Key peopleFiona Schultz (MD)[3]Publication typesBooksNonfiction topicsLifestyle, natural history, travelOwner(s)Fiona Shultz, David Cowie FSDC TrustOfficial websitenewhollandpubl...

 

Sorin Paliga

Romanian linguist and politician Sorin PaligaBornViorel-Sorin Paliga (1956-06-21) June 21, 1956 (age 67)Braniștea, Dâmbovița County, RomaniaNationalityRomanianOccupation(s)Linguist and politicianSpouseRodica Paliga [1]Academic backgroundAlma materUniversity of BucharestAcademic workInstitutionsUniversity of BucharestMain interestsEastern Romance languages, South Slavic languages, pre-Indo-European languages Sorin Paliga (born Viorel-Sorin Paliga on June 21, 1956 in Braniștea,...

 

Stasiun MRT MacPherson

 CC10  DT26 MacPherson MRT Station麦波申地铁站மெக்பர்சன்Angkutan cepatPeron Stasiun MRT MacPhersonLokasi171 Paya Lebar Road Singapore 409048Koordinat1°19′36″N 103°53′24″E / 1.32665°N 103.890019°E / 1.32665; 103.890019Jalur  Jalur Lingkar   Jalur Pusat Kota Jumlah peronPulau/SampingJumlah jalur4 (2 U/C)LayananBus, TaksiKonstruksiJenis strukturBawah tanahTinggi peron3 (1 U/C)Akses difabelYesInf...

WZME

WHAI-TV redirects here. For other uses, see Whai. Story Television station in Bridgeport, Connecticut This article needs to be updated. Please help update this article to reflect recent events or newly available information. (May 2022) WZMEBridgeport, ConnecticutNew York, New YorkUnited StatesCityBridgeport, ConnecticutChannelsDigital: 21 (UHF), shared with WEDWVirtual: 43BrandingStory Television New YorkMeTV+ New York (on DT2)ProgrammingAffiliations43.1: Story Television(for others, see §&...

 

Randy Weston

American jazz pianist and composer (1926–2018) For the Ohio politician, see Randy Weston (politician). Randy WestonWeston in 2007Background informationBirth nameRandolph Edward WestonBorn(1926-04-06)April 6, 1926Brooklyn, New York City, New York, U.S.DiedSeptember 1, 2018(2018-09-01) (aged 92)Brooklyn, New York City, U.S.GenresJazz, African jazz, world fusionOccupation(s)Musician, composer, bandleaderInstrument(s)PianoYears active1950s–2018LabelsRiverside, Antilles, Verve, MotémaWeb...

 

Meriam pertahanan udara M1939 85mm (52-K)

Meriam pertahanan udara M1939 85mm (52-K) (bahasa Rusia: 85-мм зенитная пушка обр. 1939 г. (52-К))[1] adalah sebuah senjata pertahanan udara 85-mm milik Soviet. Senjata ini merupakan salah satu alutsista terbaru Tentara Merah saat Operasi Barbarossa dimulai. 52-K dirancang oleh dua insinyur ternama Uni Soviet yaitu M. N. Loginov dan G. D. Dorokhin. Pada saat perang mulai Meriam ini mampu menembak jatuh pesawat Luftwaffe yang terbang di ketinggian menengah hing...

Dejan Brđović

Questa voce sull'argomento pallavolisti serbi è solo un abbozzo. Contribuisci a migliorarla secondo le convenzioni di Wikipedia. Segui i suggerimenti del progetto di riferimento. Dejan BrđovićNazionalità Serbia Altezza196 cm Pallavolo RuoloAllenatore ex Schiacciatore Termine carriera2006 CarrieraSquadre di club ????-????OK Žiča1984-1985 Ribnica1985-1992 Stella Rossa1992-1995 Olympiakos1995-1996 Orestiada1996-1997 Roma1997-1998 Stella Rossa1998-19...

 

Boeing 787

Boeing 787 Dreamliner En Boeing 787-9 från Oman Air.BeskrivningFörsta flygning15 december 2009I aktiv tjänst26 oktober 2011 –Ursprung USATillverkareBoeing Commercial AirplanesAntal tillverkade708 (juli 2018)DataLängd56,7 meter (787-8)62,8 meter (787-9)68,3 meter (787-10)Spännvidd60 meterHöjd17 meterTomvikt119 950 kg (787-8)128 850 kg (787-9)135 500 kg (787-10)Max. startvikt227 930 kg (787-8)254 000 kg (787-9 och -10)Max. bränslevikt101 400 kgMotor(er)2 × General Electric GEnx e...

 

Fernando Villavicencio

Dalam artikel ini, pertama atau paternal nama keluarganya adalah Villavicencio dan nama keluarga maternal atau keduanya adalah Valencia. Fernando VillavicencioVillavicencio pada Januari 2023 Anggota Majelis Nasionaluntuk Daerah Pemilihan NasionalMasa jabatan14 Mei 2021 – 17 Mei 2023 Informasi pribadiLahirFernando Alcibiades Villavicencio Valencia(1963-10-11)11 Oktober 1963Alausí, EkuadorMeninggal9 Agustus 2023(2023-08-09) (umur 59)Quito, EkuadorSebab kematianPemb...

Bob DiPiero

American singer-songwriter Bob DiPieroDiPiero performing at the CMA Songwriters' Series in September 2014.Background informationBirth nameRobert John DiPieroOrigin (1951-03-03) March 3, 1951 (age 73) Youngstown, Ohio, U.S.GenresCountryOccupation(s)Singer-songwriterInstrument(s)Vocals, guitarYears active1983–presentFormerly ofBilly HillSpouse(s) Pam Tillis ​ ​(m. 1991; div. 1998)​Websitebobdipiero.comMusical artist Robert John DiPiero (bor...

 

1879 New Zealand general election

Elections 1879 New Zealand general election ← 1875–76 28 August – 15 September 1879 1881 → ← outgoing memberselected members →All 88 seats in the New Zealand House of RepresentativesTurnout66.5%   First party Second party   Leader John Hall George Grey Party Conservative Independents Greyite Independents Leader since 1879 1877 Leader's seat Selwyn Thames Seats won 45 41 Premier before election George Grey Independen...