Possibility of the research on ancient DNA for marine eukaryotes

化石DNA有时保存在厌氧海洋地层中。本研究试图从深海海底钻孔岩芯中寻找生物DNA。 海洋生物基因组水平的进化生物学可能是由化石DNA组成的。我们试图从深海钻探船CHIKYU收集的岩心样品中扩增DNA片段。我们发现了距离核心100到1,000 bp的DNA片段。 DNA含量大于0.6ng/ul/mg干重沉积物。在DNA片段中鉴定出2 ~ 4个海洋真核生物类群。我们相信，我们已经得到了证据，证明在深海沉积物中产生的厌氧环境条件下，生物化的DNA肯定会保存下来。

Fossilized DNA are sometimes preserved in anaerobic marine strata. This study is attempted to find fossilised DNA from deep-sea drill core beneath sea floor. Genome-level evolutionary biology for marine organisms are probably made with fossil DNA.We tried to amplify DNA fragments from core samples collected by deep-sea drill vessel CHIKYU. We found DNA fragments with 100s to 1,000s bp from the core. Amounts of DNA are more than 0.6ng/ul/mg dry weighted sediments. Two to four marine eukaryotic groups were identified in the DNA fragments. We believe that we have gotten a proof that fossilized DNA are certainly preserved in anaerobic environmental conditions which are created in the deep-sea sediments.