Archaea, the tree of life, and cellular evolution in eukaryotes

Jing Xiao, Lu Fan, Dingfeng Wu, Yanbing Xu, Dengxun Lai, William F. Martin, Ruixin Zhu, Chuanlun Zhang
2019 Science China. Earth Sciences  
The early history of life harbours many unresolved evolutionary questions, none more important than the genomic origin and cellular evolution of eukaryotes. An issue central to eukaryote origin concerns the position of eukaryotes in the tree of life and the relationship of the host lineage that acquired the mitochondrion some two billion years ago to lineages of modern-day archaea. Recent analyses indicate that the host lineage branches within the Archaea, prompting the search for novel
more » ... lineages that can improve our understanding of the cellular evolution of eukaryotes. Here we give a brief review of the studies on Archaea, the tree of life and the cellular evolution of eukaryotes, which is followed by an overview of recent progress fueled by new genomic technologies and recent status of archaeal research in China. Future directions for the study of early evolution are considered. Roumpeka et al., 2017; Sieber et al., 2018) . Those advances impact our understanding of microbial j diversity, physiology and evolution. Here we consider the new archaeal lineages discovered by metagenomic techniques in the context of studies that have given rise to current discussions on this topic, with attention to the development of archaeal research in China. We also highlight both the advantages and challenges brought by increasingly available metagenomic data on Archaea, data that have quickly moved to the forefront of the field. Finally, future directions for studying early evolution are discussed.
doi:10.1007/s11430-018-9326-1 fatcat:b2zylklnxvde3dorepeyh562vq