一种COOL1基因的自然变异增强了玉米对高度适应的耐寒性
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.
Cell
|January 22, 2025
概括
玉米的耐寒性是由COOL1基因调节的. 它的促进剂的变化和与HY5和CPK17的相互作用使其能够适应寒冷的气候,特别是在北.
科学领域:
- 植物生物学
- 遗传学
- 农业学
背景情况:
- 低温限制了玉米的生长,产量和分布.
- 玉米适应寒冷的机制尚未完全理解.
研究的目的:
- 确定调节玉米耐寒性的关键遗传因素.
- 阐明控制适应寒冷气候的分子途径.
主要方法:
- 全基因组关联研究 (GWAS) 以确定遗传变异.
- 对转录因子结合和基因调节的分析.
- 研究蛋白相互作用和细胞局部化.
主要成果:
- 确定了对寒冷反应的操作位置1 (COOL1) 作为寒冷耐受性的关键调节器.
- 自然的COOL1促进体变异影响HY5结合和COOL1转录.
- 在寒冷压力下,CPK17稳定了COOL1,调节了下游基因表达.
- 耐寒的COOL1基因在高度的寒冷地区普遍存在.
结论:
- 定义了一种新的以COOL1为中心的玉米耐寒路径.
- 证明了COOL1在高度适应中的作用.
- 提供了改善耐寒作物的遗传策略.
相关概念视频
Responses to Heat and Cold Stress
13.3K
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.
13.3K
Monohybrid Crosses
228.7K
Overview
228.7K
Position-effect Variegation
6.3K
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.
6.3K
Background and Environment Affect Phenotype
6.4K
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...
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...
6.4K
Introduction to Plant Diversity
43.8K
From Water to Land
43.8K
Light Acquisition
8.4K
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.
8.4K


