Experimental taphonomy of organelles and the fossil record of early eukaryote evolution.
Experimental taphonomy of organelles and the fossil record of early eukaryote evolution.
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细胞器的实验埋藏学与早期真核生物演化的化石记录
DOI：
10.1126/sciadv.abe9487
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发表时间：
2021-01
期刊：
影响因子：
13.6
通讯作者：
Donoghue PCJ
中科院分区：
文献类型：
--
作者：
Carlisle EM;Jobbins M;Pankhania V;Cunningham JA;Donoghue PCJ
埋藏学实验揭示了复杂生命起源的化石记录的潜力。真核生物的起源时间和真核发生的顺序受到很大的限制，因为它们的化石记录很难解释。关于细胞器分解的说法已经被打了折扣，因为没有证据表明它们衰变得太快而不能分解。我们的实验特点的模式和时间尺度的衰变的细胞核，叶绿体，和蛋白核在红色和绿色藻类，证明他们坚持了许多个星期死后作为物理基板可用于保存，时间尺度与已知的机制一致。叶绿体比细胞核表现出更强的抗衰变性;蛋白核不太可能被保存下来，但它们的存在可以从化石叶绿体内的空间推断出来。我们的研究结果是相容的种子植物细胞器的差异保存。元古宙化石中的细胞器化石化的说法不能再以可解释性为理由而被驳回，这促使人们重新解释早期真核生物化石记录和真核生物发生化石记录的前景。
Taphonomy experiments reveal the potential for a fossil record of the origin of complex life. The timing of origin of eukaryotes and the sequence of eukaryogenesis are poorly constrained because their fossil record is difficult to interpret. Claims of fossilized organelles have been discounted on the unsubstantiated perception that they decay too quickly for fossilization. We experimentally characterized the pattern and time scale of decay of nuclei, chloroplasts, and pyrenoids in red and green algae, demonstrating that they persist for many weeks postmortem as physical substrates available for preservation, a time scale consistent with known mechanisms of fossilization. Chloroplasts exhibit greater decay resistance than nuclei; pyrenoids are unlikely to be preserved, but their presence could be inferred from spaces within fossil chloroplasts. Our results are compatible with differential organelle preservation in seed plants. Claims of fossilized organelles in Proterozoic fossils can no longer be dismissed on grounds of plausibility, prompting reinterpretation of the early eukaryotic fossil record and the prospect of a fossil record of eukaryogenesis.
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DOI：
10.1098/rspb.2004.2939
发表时间：
2005-01-22
影响因子：
4.7
作者：
Koller, B;Schmitt, JM;Tischendorf, G
通讯作者：
Tischendorf, G
影响因子：
2.4
作者：
Ozerov, IA;Zhinkina, NA;Rodionov, AV
通讯作者：
Rodionov, AV
影响因子：
3
作者：
NIKLAS, KJ;BROWN, RM
通讯作者：
BROWN, RM
影响因子：
2.7
作者：
BRIGGS, DEG;KEAR, AJ
通讯作者：
KEAR, AJ
影响因子：
9.8
作者：
Bengtson S;Sallstedt T;Belivanova V;Whitehouse M
通讯作者：
Whitehouse M