Four hundred million years of silica biomineralization in land plants
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- Elizabeth Trembath-Reichert
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125;
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- Jonathan Paul Wilson
- Department of Biology, Haverford College, Haverford, PA 19041; and
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- Shawn E. McGlynn
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125;
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- Woodward W. Fischer
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125;
書誌事項
- 公開日
- 2015-03-30
- DOI
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- 10.1073/pnas.1500289112
- 公開者
- Proceedings of the National Academy of Sciences
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説明
<jats:title>Significance</jats:title> <jats:p> Amorphous silica (SiO <jats:sub>2</jats:sub> ) phases produced by plants are principal mass fluxes in the global silica cycle. The study of silica biomineralization in plants has largely focused on angiosperms, leaving open questions about its early evolution. To address the effect of early plants on the silica cycle, we measured the silica contents of extant members of plant groups known from fossils to have been major components of the terrestrial landscape in the past, as grasses are today. Most of these early-diverging plant lineages accumulate substantial amounts of silica. We compared these observations with the distribution and evolution of plant silica transport proteins, suggesting convergent evolution of silica use. Results presented here outline an extensive evolutionary history of silica biomineralization in plants. </jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 112 (17), 5449-5454, 2015-03-30
Proceedings of the National Academy of Sciences
