Molecular evidence for the early colonization of land by fungi and plants.

Heckman, D S; Geiser, D M; Eidell, B R; Stauffer, R L; Kardos, N L; Hedges, S B

Heckman, D S; Geiser, D M; Eidell, B R; Stauffer, R L; Kardos, N L; Hedges, S B.

Afiliación

Heckman DS; Astrobiology Research Center and Department of Biology, Pennsylvania State University, University Park, PA 16802, USA.

Science ; 293(5532): 1129-33, 2001 Aug 10.

Article en En | MEDLINE | ID: mdl-11498589

RESUMEN

The colonization of land by eukaryotes probably was facilitated by a partnership (symbiosis) between a photosynthesizing organism (phototroph) and a fungus. However, the time when colonization occurred remains speculative. The first fossil land plants and fungi appeared 480 to 460 million years ago (Ma), whereas molecular clock estimates suggest an earlier colonization of land, about 600 Ma. Our protein sequence analyses indicate that green algae and major lineages of fungi were present 1000 Ma and that land plants appeared by 700 Ma, possibly affecting Earth's atmosphere, climate, and evolution of animals in the Precambrian.

Asunto(s)

Evolución Biológica; Chlorophyta; Proteínas Fúngicas/química; Hongos; Chlorophyta/genética; Chlorophyta/crecimiento & desarrollo; Bases de Datos Factuales; Ecosistema; Fósiles; Proteínas Fúngicas/genética; Hongos/química; Hongos/genética; Hongos/crecimiento & desarrollo; Filogenia; Plantas/genética; Rhodophyta/genética; Rhodophyta/crecimiento & desarrollo; Alineación de Secuencia; Análisis de Secuencia de Proteína; Simbiosis; Tiempo

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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas Fúngicas / Chlorophyta / Evolución Biológica / Hongos Idioma: En Revista: Science Año: 2001 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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