Video Experimental Relacionado

Updated: May 31, 2025

Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis

Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis

Published on: July 23, 2014

Una variante natural del gen COOL1 mejora la tolerancia al frío para la adaptación a altas latitudes en el maíz

Rong Zeng¹, Yiting Shi¹, Li Guo²

¹State Key Laboratory of Plant Environmental Resilience, Frontiers Science Center for Molecular Design Breeding, College of Biological Sciences, China Agricultural University, Beijing 100193, China.

|January 22, 2025

Resumen

La tolerancia al frío del maíz está regulada por el gen COOL1. Las variaciones en su promotor e interacción con HY5 y CPK17 permiten la adaptación a climas fríos, particularmente en latitudes del norte.

Área de la Ciencia:

Biología vegetal
La genética
Agronomía

Sus antecedentes:

Las bajas temperaturas limitan el crecimiento, el rendimiento y la distribución del maíz.
Los mecanismos de adaptación al frío del maíz no se comprenden completamente.

Objetivo del estudio:

Identificar los principales factores genéticos que regulan la tolerancia al frío del maíz.
Elucidar la vía molecular que controla la adaptación a climas fríos.

Principales métodos:

Estudios de asociación de todo el genoma (GWAS) para identificar variantes genéticas.
Análisis de la unión del factor de transcripción y la regulación génica.
Investigando las interacciones proteicas y la localización celular.

Principales resultados:

Se ha identificado el LOCUS 1 de OPERACIÓN RESPONSABLE al frío (COOL1) como un regulador crucial de la tolerancia al frío.
Las variaciones naturales del promotor COOL1 influyen en la unión HY5 y la transcripción de COOL1.
CPK17 estabiliza COOL1 bajo estrés en frío, modulando la expresión génica aguas abajo.
Los alelos COOL1 tolerantes al frío prevalecen en regiones frías de latitudes altas.

Conclusiones:

Se ha definido una nueva vía centrada en COOL1 para la tolerancia al frío del maíz.
Se ha demostrado el papel de COOL1 en la adaptación latitudinal alta.
Proporciona información sobre estrategias genéticas para mejorar los cultivos resistentes al frío.

Palabras clave:

COOL1 (en inglés)tolerancia al frío Adaptación latitudinal el maíz variación natural

Más Videos Relacionados

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes

Published on: March 28, 2025

Generating Homo- and Heterografts Between Watermelon and Bottle Gourd for the Study of Cold-responsive MicroRNAs

Generating Homo- and Heterografts Between Watermelon and Bottle Gourd for the Study of Cold-responsive MicroRNAs

Published on: November 20, 2018

Videos de Conceptos Relacionados

Responses to Heat and Cold Stress

Responses to Heat and Cold Stress

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.

Monohybrid Crosses

Monohybrid Crosses

Position-effect Variegation

Position-effect Variegation

In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.

Background and Environment Affect Phenotype

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...

Introduction to Plant Diversity

Introduction to Plant Diversity

From Water to Land

Light Acquisition

Light Acquisition

In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.