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Environmentally Induced Heritable Changes in Flax
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Mecanismos genómicos de adaptación al clima en el césped poliploide de cambio de bioenergía

John T Lovell1, Alice H MacQueen2, Sujan Mamidi3

  • 1Genome Sequencing Center, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA. jlovell@hudsonalpha.org.

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|January 28, 2021
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Resumen
Este resumen es generado por máquina.

El análisis genómico del césped (Panicum virgatum) revela una amplia adaptación al clima. Esta investigación proporciona herramientas esenciales para los criadores para mejorar el rendimiento de los cultivos para la producción sostenible de bioenergía.

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Área de la Ciencia:

  • Genómica de las plantas
  • Adaptación al cambio climático
  • Culturas de bioenergía

Sus antecedentes:

  • El cambio climático y los extremos ambientales amenazan la seguridad alimentaria mundial, el combustible y la productividad de los cultivos.
  • Mejorar la resiliencia de los cultivos requiere comprender los genes de adaptación, pero el conocimiento se limita a unos pocos sistemas modelo.

Objetivo del estudio:

  • Reunir y anotar el genoma de la hierba poliploide de los cultivos de bioenergía (Panicum virgatum).
  • Identificar la evidencia genómica de la adaptación al clima en el switchgrass.
  • Proporcionar recursos para mejorar el rendimiento del switchgrass para la bioenergía sostenible.

Principales métodos:

  • Ensamblaje del genoma y anotación de la hierba switchgrass (Panicum virgatum).
  • Análisis de la biomasa y la supervivencia en 732 genotipos resecuenciados en 10 jardines comunes.
  • Identificación de las asociaciones clima-gen-biomasa y de los patrones de flujo genético.

Principales resultados:

  • Se reveló una amplia evidencia genómica de adaptación al clima en el switchgrass.
  • Las asociaciones clima-gen-biomasa eran abundantes pero variadas entre los grupos genéticos.
  • El flujo génico aceleró la adaptación a través de la introgestión, y la poliploidía mejoró el potencial adaptativo a través de la fraccionamiento de la función génica.

Conclusiones:

  • Los recursos del genoma de switchgrass y las asociaciones de rasgos genéticos proporcionan herramientas a los criadores para mejorar el rendimiento de la bioenergía sostenible.
  • Comprender la adaptación genómica es crucial para desarrollar cultivos resistentes al clima.