早期进化与最后的共同祖先》特刊导言。

IF 2.1 3区生物学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY

Journal of Molecular Evolution Pub Date : 2024-10-01 Epub Date: 2024-09-20 DOI:10.1007/s00239-024-10208-6

Arturo Becerra, Aaron D Goldman

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引用次数: 0

摘要

生命的早期进化跨越了第一个真核细胞出现之前的漫长时期。这一时代发生在 45 亿年前到 25 亿年前，标志着许多基本细胞属性的出现，并见证了所有生命形式的最后共同祖先（LCA）的存在。揭示和重建这个难以捉摸的最后共同祖先的特征和基因构成是一项艰巨的挑战，也是早期进化的关键追求。虽然大多数科学论文都认为 LCA 类似于当代原核生物，但其确切定义、基因组组成、代谢能力和生态位仍然是有争议的话题。

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Introduction to the Special Issue on Early Evolution and the Last Common Ancestor.

The early evolution of life spans an extensive period preceding the emergence of the first eukaryotic cell. This epoch, which transpired from 4.5 to 2.5 billion years ago, marked the advent of many fundamental cellular attributes and witnessed the existence of the Last Common Ancestor (LCA) of all life forms. Uncovering and reconstructing this elusive LCA's characteristics and genetic makeup represents a formidable challenge and a pivotal pursuit in early evolution. While most scientific accounts concur that the LCA resembles contemporary prokaryotes, its precise definition, genome composition, metabolic capabilities, and ecological niche remain subjects of contentious debate.

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来源期刊

Journal of Molecular Evolution 生物-进化生物学

CiteScore

5.50

自引率

2.60%

发文量

审稿时长

3 months

期刊介绍： Journal of Molecular Evolution covers experimental, computational, and theoretical work aimed at deciphering features of molecular evolution and the processes bearing on these features, from the initial formation of macromolecular systems through their evolution at the molecular level, the co-evolution of their functions in cellular and organismal systems, and their influence on organismal adaptation, speciation, and ecology. Topics addressed include the evolution of informational macromolecules and their relation to more complex levels of biological organization, including populations and taxa, as well as the molecular basis for the evolution of ecological interactions of species and the use of molecular data to infer fundamental processes in evolutionary ecology. This coverage accommodates such subfields as new genome sequences, comparative structural and functional genomics, population genetics, the molecular evolution of development, the evolution of gene regulation and gene interaction networks, and in vitro evolution of DNA and RNA, molecular evolutionary ecology, and the development of methods and theory that enable molecular evolutionary inference, including but not limited to, phylogenetic methods.