Cryogenian evolution of stigmasteroid biosynthesis | Zendy

Yosuke Hoshino | Zendy; A. R. Stroeva | Zendy; William Meredith | Zendy; Colin E. Snape | Zendy; V. V. Poshibaev | Zendy; Gerard J M Versteegh | Zendy; Н. Б. Кузнецов | Zendy; Arne Leider | Zendy; Lennart van Maldegem | Zendy; Mareike Neumann | Zendy; Sebastian Naeher | Zendy; Małgorzata Moczydłowska | Zendy; Jochen J. Brocks | Zendy; A.J.M. Jarrett | Zendy; Qing Tang | Zendy; Shuhai Xiao | Zendy; David M. McKirdy | Zendy; Supriyo K. Das | Zendy; J. Javier Álvaro | Zendy; Pierre Sansjofre | Zendy; Christian Hallmann | Zendy

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Cryogenian evolution of stigmasteroid biosynthesis

Author(s) -

Yosuke Hoshino,

A. R. Stroeva,

William Meredith,

Colin E. Snape,

V. V. Poshibaev,

Gerard J M Versteegh,

Н. Б. Кузнецов,

Arne Leider,

Lennart van Maldegem,

Mareike Neumann,

Sebastian Naeher,

Małgorzata Moczydłowska,

Jochen J. Brocks,

A.J.M. Jarrett,

Qing Tang,

Shuhai Xiao,

David M. McKirdy,

Supriyo K. Das,

J. Javier Álvaro,

Pierre Sansjofre,

Christian Hallmann

Publication year - 2017

Publication title -

science advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.928

H-Index - 146

ISSN - 2375-2548

DOI - 10.1126/sciadv.1700887

Subject(s) - sterol , sterane , biology , algae , bottleneck , endosymbiosis , biosynthesis , ecology , evolutionary biology , biochemistry , hopanoids , paleontology , gene , plastid , computer science , chloroplast , structural basin , cholesterol , source rock , embedded system

Sedimentary hydrocarbon remnants of eukaryotic C26–C30 sterols can be used to reconstruct early algal evolution. Enhanced C29 sterol abundances provide algal cell membranes a density advantage in large temperature fluctuations. Here, we combined a literature review with new analyses to generate a comprehensive inventory of unambiguously syngenetic steranes in Neoproterozoic rocks. Our results show that the capacity for C29 24-ethyl-sterol biosynthesis emerged in the Cryogenian, that is, between 720 and 635 million years ago during the Neoproterozoic Snowball Earth glaciations, which were an evolutionary stimulant, not a bottleneck. This biochemical innovation heralded the rise of green algae to global dominance of marine ecosystems and highlights the environmental drivers for the evolution of sterol biosynthesis. The Cryogenian emergence of C29 sterol biosynthesis places a benchmark for verifying older sterane signatures and sets a new framework for our understanding of early algal evolution

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