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Posible base artificial para el aparente crecimiento bacteriano a 250 grados C
Nature
|February 23, 1984
Resumen
Revisando el estudio de bacterias marinas termofílicas de Baross y Deming, esta investigación sugiere que sus hallazgos de crecimiento bacteriano a 250 ° C pueden deberse a artefactos experimentales y contaminación, no a la vida microbiana real a temperaturas extremas.
Área de la Ciencia:
- Microbiología Microbiología.
- Investigación de la investigación extremófila.
- La geoquímica es la geoquímica.
Sus antecedentes:
- Investigaciones anteriores de Baross y Deming sugirieron que las bacterias marinas termofílicas podrían crecer a temperaturas de hasta 250°C.
- Estos hallazgos se basaron en estudios realizados cerca de aguas termales submarinas.
Objetivo del estudio:
- Reevaluar la evidencia de crecimiento bacteriano a temperaturas extremadamente altas.
- Investigar posibles fuentes de error en los experimentos originales.
Principales métodos:
- Replicación de las condiciones experimentales de Baross y Deming, incluyendo medio de crecimiento, temperatura y presión.
- Se utilizaron procedimientos de muestreo y análisis idénticos.
- Realizó experimentos de control para descartar los artefactos químicos y la contaminación.
Principales resultados:
- Los resultados se parecen mucho a los de Baross y Deming.
- Identificaron artefactos químicos potenciales en el medio de crecimiento.
- Se observaron posibles contaminantes introducidos durante el procesamiento de la muestra.
Conclusiones:
- La evidencia de crecimiento bacteriano a 250 ° C, como lo informaron Baross y Deming, puede atribuirse a artefactos experimentales y contaminación.
- Se necesitan controles más rigurosos para confirmar la vida microbiana a temperaturas tan extremas.
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