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Video Experimental Relacionado

Updated: May 12, 2026

High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize (Zea mays L.)
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Published on: June 16, 2018

El genoma del maíz B73: complejidad, diversidad y dinámica.

Patrick S Schnable1, Doreen Ware, Robert S Fulton

  • 1Center for Plant Genomics, Iowa State University, Ames, IA 50011, USA.

Science (New York, N.Y.)
|December 8, 2009
PubMed
Resumen

Los investigadores han secuenciado el genoma del maíz, revelando más de 32.000 genes y el papel significativo de los elementos transponibles en su estructura y evolución. Esta secuencia genómica mejorada proporciona información sobre la domesticación del maíz y los avances agrícolas.

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Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes
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Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes
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Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

Published on: February 14, 2020

Área de la Ciencia:

  • La genómica es la genómica.
  • Biología Vegetal Biología Vegetal Biología Vegetal
  • Biología Molecular Biología Molecular

Sus antecedentes:

  • El maíz (Zea mays) es un cultivo vital y un organismo modelo para la investigación de plantas.
  • Comprender su gran genoma es crucial para las mejoras agrícolas.

Objetivo del estudio:

  • Presentar un borrador mejorado de la secuencia de nucleótidos del genoma del maíz.
  • Para analizar la arquitectura genómica, incluyendo el contenido genético y los elementos transponibles.
  • Investigar el impacto de las características genómicas en la estructura de los centrómeros y la ploidía.

Principales métodos:

  • Secuenciación y ensamblaje de alto rendimiento del genoma del maíz.
  • Predicción y anotación de genes.
  • Análisis de elementos transponibles, centrómeros y variantes en el número de copias.

Principales resultados:

  • Una secuencia mejorada del genoma de maíz de 2.3 gigabase con más de 32.000 genes predichos, 99.8% mapeados a los cromosomas.
  • Los elementos transponibles constituyen casi el 85% del genoma, lo que influye en los fragmentos de genes y las características de los centrómeros.
  • Correlaciones identificadas entre metilación, inserciones de transposones, recombinación y variantes en el número de copias.

Conclusiones:

  • El estudio proporciona un recurso genómico completo para el maíz.
  • Los elementos transponibles juegan un papel crítico en la configuración del genoma del maíz y su evolución.
  • Los hallazgos ofrecen una base para futuras investigaciones sobre la domesticación y la cría del maíz.