Plant Pigment Chromatography
Plant Pigment Chromatography - Related Videos
11:03
A Method for Extracting Pigments from Squid Doryteuthis pealeii
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Cited by 4 •
2016
A protocol for the extraction of pigments from the nanostructured granules in squid Doryteuthis pealeii chromatophores is presented.
06:40
Plant Diversity - Concepts
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2019
From Water to Land Kingdom Plantae first appeared about 410 million years ago as green algae transitioned from water to land. Though challenging, this transition benefited early colonizers in several ways. Initially, most living organisms (including plants and animals) were ocean dwelling, making aquatic environments crowded and highly competitive. In contrast, land was a relatively uncolonized environment with ample resources and little to no predators or competitors. Terrestrial environments...
08:41
Quantifying Abdominal Pigmentation in Drosophila melanogaster
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Cited by 5 •
2017
This work presents a method to quickly and precisely quantify the abdominal pigmentation of Drosophila melanogaster using digital image analysis. This method streamlines the procedures between phenotype acquisition and data analysis and includes specimen mounting, image acquisition, pixel value extraction, and trait measurement.
02:00
Photoreceptors and Plant Responses to Light
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2020
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants. What Is a Photoreceptor? Plants respond to light using a unique set of light-sensitive proteins called photoreceptors. Photoreceptors contain photopigments, which consist of a protein component bound to a non-protein, light-absorbing pigment called...
10:22
Transmitting Plant Viruses Using Whiteflies
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Cited by 41 •
2013
Improving our understanding of and our ability to manage many of the insect-transmitted plant viruses requires the use of the vector. Insect transmission of plant viruses is a tritrophic interaction, and as such requires the manipulation of insects, virus, and plant. Vectors must be reared in large numbers and manipulated in such a way as to insure high rates of transmission to test plants. The basics of rearing and manipulating the whitefly, Bemisa tabaci (Hemiptera: Aleyrodidae), a vector of...
FAQs
Separation occurs because each pigment has a different balance of solubility in the moving solvent and attraction to the stationary material. A pigment that dissolves more readily and interacts less strongly with the stationary phase travels farther as capillary action carries the solvent through the medium. Differences in these interactions create separate migration distances and visible bands.
Retention factor values provide a standardized way to compare how far different pigments migrate relative to the solvent movement. Pigments with different values have experienced different balances of solubility and stationary-phase attraction. Comparing these values across samples helps distinguish migration patterns and assess whether plant tissues contain similar or different pigment components.
Several bands appear because the green appearance of a leaf does not represent a single compound. Chlorophylls may occur alongside carotenoids, and these pigment groups can differ in their movement through the stationary phase. The resulting pattern provides evidence of pigment diversity and gives biology students a way to examine leaf composition rather than relying on color alone.
A basic investigation begins by placing plant tissue pigments onto paper or another stationary phase, introducing a solvent, and allowing capillary action to move the solvent through the sample. Once the pigments separate into bands, the bands can be compared by their positions and by retention factor values. This workflow turns an extract into interpretable migration patterns.
Migration depends chiefly on the solvent’s ability to carry each pigment and on each pigment’s attraction to the stationary material. The extent of solvent movement also matters because pigments can travel different distances as the solvent advances. Keeping the comparison focused on these relationships helps explain why bands from different samples may not occupy identical positions.
In biology, the method can be applied to questions about photosynthesis, pigment distribution, plant adaptation, and light absorption. Comparing band patterns or retention factor values provides evidence about which pigment groups are present and how their composition varies among plant tissues. These observations connect visible separation results with the biological roles and adaptive significance of plant pigments.