相关实验视频
Updated: Jan 18, 2026
04:43
Visualizing Visual Adaptation
Published on: April 24, 2017
9.6K
热量会大大改变花的颜色和颜料成分,但不会影响花的显眼性
Eduardo Narbona1, Francisco Perfectti2,3, Adela González-Megías4
1Dpto. de Biología Molecular e Ingeniería Bioquímica, Universidad Pablo de Olavide, Sevilla, Spain.
American journal of botany
|September 10, 2025
概括
莫里坎迪亚·阿文西斯 (Moricandia arvensis) 的花因高温而季节性地改变颜色. 白色的夏季花具有吸收紫外线的基,保持着传粉者的吸引力,同时可能增加耐热性.
科学领域:
- 植物生物学 植物生物学
- 生态生态学 生态生态学
- 生物化学 生物化学
背景情况:
- 花色素吸引着授粉者,并提供环境保护.
- 热应激可以改变色素成分,影响授粉者感知.
- 莫里坎迪亚亚阿文西斯 (Moricandia arvensis) 呈现季节性花二态 (紫色的春天,白色的夏天).
研究的目的:
- 调查Moricandia arvensis热引起的色素变化如何影响花的颜色.
- 确定这些颜色变化对授粉者感知的影响.
- 描述不同花形态的样.
主要方法:
- 春季和夏季花形态的比较分析.
- 测量花的光谱反射率和花提取物的吸收光谱.
- 为关键授粉者视觉系统建模花颜色.
- 在UHPLC-ESI-MS/MS分析中,分析了性成分.
主要成果:
- 春季花具有紫外线反射;夏季花具有高可见反射,但没有紫外线.
- 春季的花朵中含有安托西安素;夏季的花朵积累了吸收紫外线的黄胺.
- 这两种形态对主要的授粉者群体来说都是明显的.
- 夏季花的度较高的化合物,特别是ferulic酸和kaempferol衍生物.
结论:
- 白色的夏季Moricandia arvensis花朵拥有吸收紫外线的素,不仅仅是缺乏酸盐.
- 这些化合物可以提供耐热性,同时确保授粉者可见性.
- 多功能性质在花的颜色进化中起着至关重要的作用.
相关概念视频
02:45Responses to Heat and Cold Stress
14.7K
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.
14.7K
02:27Background and Environment Affect Phenotype
7.4K
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...
7.4K
01:07Speciation Rates
22.6K
Overview
22.6K
02:16Genetics of Speciation
20.9K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
20.9K
01:14Changes in Skin Color: Clinical Perspectives
3.3K
The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
3.3K
01:21Frequency-dependent Selection
23.1K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
23.1K