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Link to original content: http://pubmed.ncbi.nlm.nih.gov/38498818/
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. 2024 Mar;24(S1):S107-S123.
doi: 10.1089/ast.2021.0119.

Chapter 5: Major Biological Innovations in the History of Life on Earth

G Ozan Bozdag  1 , Nadia Szeinbaum  2 , Peter L Conlin  1 , Kimberly Chen  1 , Santiago Mestre Fos  3 , Amanda Garcia  4 , Petar I Penev  1 , George A Schaible  5 , Gareth Trubl  6
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Chapter 5: Major Biological Innovations in the History of Life on Earth

G Ozan Bozdag et al. Astrobiology. 2024 Mar.

Abstract

All organisms living on Earth descended from a single, common ancestral population of cells, known as LUCA-the last universal common ancestor. Since its emergence, the diversity and complexity of life have increased dramatically. This chapter focuses on four key biological innovations throughout Earth's history that had a significant impact on the expansion of phylogenetic diversity, organismal complexity, and ecospace habitation. First is the emergence of the last universal common ancestor, LUCA, which laid the foundation for all life-forms on Earth. Second is the evolution of oxygenic photosynthesis, which resulted in global geochemical and biological transformations. Third is the appearance of a new type of cell-the eukaryotic cell-which led to the origin of a new domain of life and the basis for complex multicellularity. Fourth is the multiple independent origins of multicellularity, resulting in the emergence of a new level of complex individuality. A discussion of these four key events will improve our understanding of the intertwined history of our planet and its inhabitants and better inform the extent to which we can expect life at different degrees of diversity and complexity elsewhere.

Keywords: Eukaryogenesis; Major transitions in evolution; Oxygenic photosynthesis; The last universal common ancestor; Transition to multicellularity.

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References

    1. Adam ZR, Skidmore ML, Mogk DW, et al. . A Laurentian record of the earliest fossil eukaryotes. Geology 2017;45(5):387–390; doi: 10.1130/G38749.1. - DOI
    1. Alcott LJ, Mills BJ, Poulton SW. Stepwise Earth oxygenation is an inherent property of global biogeochemical cycling. Science 2019;366(6471):1333–1337; doi: 10.1126/science.aax6459. - DOI - PubMed
    1. Al-Shayeb B, Sachdeva R, Chen L-X, et al. . Clades of huge phages from across Earth's ecosystems. Nature 2020;578(7795):425–431; doi: 10.1038/s41586-020-2007-4. - DOI - PMC - PubMed
    1. Andersson SG, Zomorodipour A, Andersson JO, et al. . The genome sequence of Rickettsia prowazekii and the origin of mitochondria. Nature 1998;396(6707):133–140; doi: 10.1038/24094. - DOI - PubMed
    1. Archibald JM. Endosymbiosis and eukaryotic cell evolution. Curr Biol 2015;25(19):R911–R921: doi: 10.1016/j.cub.2015.07.055. - DOI - PubMed

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