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Origin of angiosperms and the puzzle of the Jurassic gap

by Zhang, Zhi-Rong , Wang, Jian , Zhang, Ting , Li, De-Zhu , Zhang, Shu-Dong , Soltis, Pamela S. , Soltis, Douglas E. , Gao, Lian-Ming , Yang, Jun-Bo , Luo, Yang , Gitzendanner, Matthew A. , Li, Hong-Tao , Fu, Chao-Nan , Wang, Qing-Feng , Hollingsworth, Peter M. , Fritsch, Peter W. , Cai, Jie , Wang, Hong , Yang, Jing , Yi, Ting-Shuang , Chase, Mark W. , van der Bank, Michelle , Ma, Peng-Fei

in 45/23 / 631/181/757 / 631/449/2669 / 704/158/670 / Biological Evolution / Biomedical and Life Sciences / Comparative studies / Cretaceous / Flowering plants / Fossils / Genes, Plant - genetics / Genome, Plant - genetics / Jurassic / Life Sciences / Magnoliopsida - genetics / Phylogeny / Plant Sciences / Triassic

2019

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Origin of angiosperms and the puzzle of the Jurassic gap

2019

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2019

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Journal Article

Origin of angiosperms and the puzzle of the Jurassic gap

Zhang, Zhi-Rong,

Wang, Jian,

Zhang, Ting,

Li, De-Zhu,

Zhang, Shu-Dong,

Soltis, Pamela S.,

Soltis, Douglas E.,

Gao, Lian-Ming,

Yang, Jun-Bo,

Luo, Yang,

Gitzendanner, Matthew A.,

Li, Hong-Tao,

Fu, Chao-Nan,

Wang, Qing-Feng,

Hollingsworth, Peter M.,

Fritsch, Peter W.,

Cai, Jie,

Wang, Hong,

Yang, Jing,

Yi, Ting-Shuang,

Chase, Mark W.,

van der Bank, Michelle,

Ma, Peng-Fei

2019

Overview

Angiosperms are by far the most species-rich clade of land plants, but their origin and early evolutionary history remain poorly understood. We reconstructed angiosperm phylogeny based on 80 genes from 2,881 plastid genomes representing 85% of extant families and all orders. With a well-resolved plastid tree and 62 fossil calibrations, we dated the origin of the crown angiosperms to the Upper Triassic, with major angiosperm radiations occurring in the Jurassic and Lower Cretaceous. This estimated crown age is substantially earlier than that of unequivocal angiosperm fossils, and the difference is here termed the ‘Jurassic angiosperm gap’. Our time-calibrated plastid phylogenomic tree provides a highly relevant framework for future comparative studies of flowering plant evolution. A study reconstructed angiosperm phylogeny on the basis of plastome data representing 2,351 angiosperm and 187 gymnosperm species, and dated the origin of crown angiosperms to be significantly earlier than the estimates based on fossil data.

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Publisher

Nature Publishing Group UK,Nature Publishing Group

Subject

/ Biological Evolution

/ Biomedical and Life Sciences

/ Comparative studies