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Micorrizas fósiles: un caso de simbiosis
Science (New York, N.Y.)
|July 3, 1987
Resumen
Las micorrizas vesiculares-arbusculares (VAM) fósiles muestran evidencia de arbustos, estructuras cruciales para el intercambio de nutrientes de las plantas. Este descubrimiento en la Antártida del Triásico proporciona el registro fósil más antiguo de estas estructuras fúngicas simbióticas.
Área de la Ciencia:
- La paleobotánica es la paleobotánica.
- La micología de la micología.
- Biología evolutiva Biología evolutiva.
Sus antecedentes:
- Las micorrizas vesiculares-arbusculares (VAM) son hongos simbióticos vitales para las plantas vasculares existentes.
- VAM puede haber sido crítico para la evolución de la flora terrestre temprana.
- Las pruebas fósiles anteriores de VAM carecían de arbusculos definitivos.
Objetivo del estudio:
- Para reportar la primera evidencia fósil de los arbustos.
- Para investigar la historia evolutiva temprana de la simbiosis VAM.
Principales métodos:
- Análisis paleontológico de especímenes fósiles de la Antártida.
- Examen microscópico para identificar las estructuras fúngicas.
Principales resultados:
- Los especímenes fósiles del Triásico de la Antártida contienen arbustos identificables.
- Esto representa el primer registro fósil de arbustos.
Conclusiones:
- La simbiosis arbuscular micorrizal existió en el período Triásico.
- Este hallazgo proporciona información crucial sobre la evolución temprana de las interacciones entre plantas y hongos y los orígenes vasculares de las plantas.
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