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Evidencia a escala múltiple de la disminución de la fijación microbiana de carbono a lo largo de los gradientes de
Shu-Yi-Dan Zhou1,2,3, Zhiyang Lie1,2,3, Chaotang Lei1,2,3
1Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, 723Xingke Road, Tianhe District, Guangzhou 510650, China.
The ISME journal
|August 24, 2025
Resumen
La fijación microbiana de carbono es vital en la sucesión temprana del bosque, disminuyendo a medida que los bosques maduran. Este estudio revela las comunidades microbianas
Área de la Ciencia:
- Ecología
- Microbiología
- Ciencias del suelo
Sus antecedentes:
- La acumulación de carbono en el suelo se observa durante la sucesión de bosques subtropicales.
- La dinámica de las comunidades microbianas y sus capacidades de fijación de carbono durante este proceso no se comprenden bien.
Objetivo del estudio:
- Investigar la dinámica de las comunidades microbianas y su papel en la fijación de carbono durante la sucesión forestal.
- Determinar cómo cambia la capacidad microbiana de fijación de carbono con la edad y el tipo de bosque.
Principales métodos:
- Enfoque integrador que combina la experimentación de campo, el análisis de datos metagenómicos globales y el etiquetado de isótopos.
- Análisis de 84 microbiomas del suelo de un sitio sucesivo y 755 metagenomas globales.
- Etiquetado del isótopo 13C para medir las tasas de fijación microbiana de CO2 in situ.
Principales resultados:
- Las bacterias, hongos y protistas mostraron sucesión sincrónica con la vegetación.
- Los genes de fijación de carbono disminuyeron significativamente en abundancia relativa durante las etapas sucesivas posteriores.
- Los bosques plantados exhibieron un mayor potencial de fijación de carbono que los bosques naturales maduros, impulsados por Pseudomonadota y Actinomycota.
Conclusiones:
- La fijación microbiana del carbono juega un papel crucial en la sucesión temprana del bosque.
- Este proceso es fundamental para iniciar la acumulación de carbono en el suelo.
- Comprender estas dinámicas es clave para predecir las trayectorias a largo plazo del ciclo del carbono en el suelo.
Palabras clave:
Ciclo del carbonoEtiquetado por isótoposBosques antiguosRiqueza vegetalred microbianaMás Videos Relacionados
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