Evolution of leaf-form in land plants linked to atmospheric CO2 decline in the Late Palaeozoic era

@article{Beerling2001EvolutionOL,
  title={Evolution of leaf-form in land plants linked to atmospheric CO2 decline in the Late Palaeozoic era},
  author={David J. Beerling and Colin P. Osborne and William G. Chaloner},
  journal={Nature},
  year={2001},
  volume={410},
  pages={352-354}
}
The widespread appearance of megaphyll leaves, with their branched veins and planate form, did not occur until the close of the Devonian period at about 360 Myr ago. [...] Key Result Here we show, in a series of quantitative analyses using fossil leaf characters and biophysical principles, that the delay was causally linked with a 90% drop in atmospheric pCO2 during the Late Palaeozoic era.Expand
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Selection pressures on stomatal evolution.
  • J. Raven
  • Medicine, Biology
  • The New phytologist
  • 2002
TLDR
Functional considerations suggest that stomata evolved from pores in the epidermis of plant organs which were at least three cell layers thick and had intercellular gas spaces and a cuticle; an endohydric conducting system would not have been necessary for low-growing rhizophytes, especially in early Palaeozoic CO2 -rich atmospheres. Expand
Leaf evolution: gases, genes and geochemistry.
TLDR
The recognition that plant evolution responds to and influences CO(2) over millions of years reveals the existence of an intricate web of vegetation feedbacks regulating the long-term carbon cycle. Expand
Beerling — Leaf Evolution : Gases , Genes and Geochemistry 347
Aims This Botanical Briefing reviews how the integration of palaeontology, geochemistry and developmental biology is providing a new mechanistic framework for interpreting the 40to 50-million-yearExpand
Biophysical constraints on the origin of leaves inferred from the fossil record.
TLDR
A 25-fold enlargement of leaf blades in two phylogenetically independent clades as atmospheric CO2 levels fell during the late Paleozoic is shown, supporting the relaxation of biophysical constraints on leaf area predicted by theory and point to a significant role for CO2 in plant evolution. Expand
Leaf fossil record suggests limited influence of atmospheric CO2 on terrestrial productivity prior to angiosperm evolution
TLDR
The hypothesized relationship between CO2 and plant evolution can be tested through analysis of the concurrent histories of alternative lineages, because an extrinsic driver like atmospheric CO2 should affect all plants and not just the flowering plants. Expand
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