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Fossil DNA in Cretaceous Black Shales: Myth or Reality?

机译:白垩纪黑色页岩中的化石DNA:神话还是现实?

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摘要

In a recent paper in this iournal, Inagaki et al. (2005) reported the recovery of fossil DNA derived from past microbial communities from Cretaceous marine sediments deposited approximately 112 million years ago as a black shale interval known as Oceanic Anoxic Event (OAE)-1b. Although the recovery of fossil DNA to reconstruct past microbial communities is not entirely new—there are reports of its recovery from Holocene lake and marine sediments (Coolen and Overmann, 1998; Coolen et al., 2004a,b, 2006a,b) and Pleistocene marine sediments (Inagaki et al., 2001)—the presumed Cretaceous age of the fossil DNA derived from past microbial communities recovered by Inagaki et al. (2005) is unprecedented. If genuine, this would represent a large step in molecular paleontology. It would allow researchers to reconstruct ancient microbial communities at an unprecedented resolution and, thus, evaluate in much more detail the evolution of microbial life. Microbes are the key players in the biogeochemical cycling of elements during the evolution of life on Earth together with terrestrial higher plants since their evolution in the Ordovician.
机译:Inagaki等人在该期刊的最新论文中。 (2005年)报道了从大约1.12亿年前沉积的白垩纪海洋沉积物中回收了过去微生物群落衍生的化石DNA,称为黑色页岩间隔,称为海洋缺氧事件(OAE)-1b。尽管恢复化石DNA来重建过去的微生物群落并不是完全新鲜的事,但有报道称其是从全新世湖泊和海洋沉积物中恢复的(Coolen and Overmann,1998; Coolen等,2004a,b,2006a,b)和更新世。海洋沉积物(Inagaki等人,2001年)— Inagaki等人从过去的微生物群落中提取的化石DNA的推测白垩纪。 (2005)是史无前例的。如果是真实的,这将代表分子古生物学方面的一大步。这将使研究人员能够以前所未有的分辨率重建古代微生物群落,从而更加详细地评估微生物生命的演变。自从奥陶纪以来,微生物与地球上的高等植物一起进化是地球生命演化过程中元素生物地球化学循环的关键参与者。

著录项

  • 来源
    《Astrobiology》 |2006年第2期|p.299-302|共4页
  • 作者单位

    Department of Marine Biogeochemistry and Toxicology, Royal Netherlands Institute for Sea Research, Den Burg, The Netherlands;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航天(宇宙航行);
  • 关键词

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