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Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
Published on: September 11, 2016
Comentario sobre "Las mejoras computacionales revelan una gran diversidad bacteriana y una alta toxicidad de metales
Igor Volkov1, Jayanth R Banavar, Amos Maritan
1Department of Physics, 104 Davey Lab, Pennsylvania State University, University Park, PA 16802, USA. volkov@psu.edu
Science (New York, N.Y.)
|August 19, 2006
Resumen
El análisis de la cinética de la reasociación sugiere que la diversidad de microbios del suelo no es tan alta como se afirmaba anteriormente. El estudio indica que los metales tóxicos pueden no haber causado la pérdida extensa de especies microbianas reportadas.
Área de la Ciencia:
- Microbiología Microbiología.
- Ciencias ambientales Ciencias ambientales.
- La genómica es la genómica.
Sus antecedentes:
- Investigaciones anteriores sugirieron millones de especies bacterianas en el suelo, con una pérdida significativa debido a los metales tóxicos.
- Gans y otros. Se ha informado de una amplia diversidad microbiana en suelos prístinos basados en la cinética de la reassociación del ADN.
Objetivo del estudio:
- Reevaluar las conclusiones extraídas de Gans et al. Es el análisis de la cinética de la reassociación del ADN bacteriano.
- Evaluar la validez de las afirmaciones sobre el número de especies de microbios de suelos altos y la pérdida de diversidad inducida por el metal.
Principales métodos:
- Análisis de datos de cinética de reassociación de ADN bacteriano de muestras de suelo.
- Examen crítico de la interpretación de las métricas de diversidad derivadas de los análisis cinéticos.
Principales resultados:
- Los datos de la cinética de reassociación no apoyan inequívocamente las altas estimaciones de la diversidad de especies de microbios.
- Los datos no demuestran de manera concluyente la pretendida pérdida del 99,9% de la diversidad debido a los metales tóxicos.
Conclusiones:
- Las conclusiones iniciales con respecto al gran número de especies de microbios del suelo y el impacto de los metales tóxicos requieren más justificación.
- Las interpretaciones alternativas de los datos cinéticos de la reassociación del ADN son posibles y merecen consideración.
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