Topic: Biology
Researchers at the John Innes Centre found that wild snapdragons change their color shades to attract bees. They discovered seven genes that work together to create different colors, including yellow and magenta.
Scientists have long known that flowers come in a variety of colors. But did you know that some flowers can actually change their colors to attract pollinators like bees?
A recent study published in the journal Science Advances found that wild snapdragons (Antirrhinum majus) do just that. Researchers at the John Innes Centre, led by Professor Enrico Coen, worked with colleagues from Austria, China, and Australia to investigate how these flowers change their colors.
The team studied a special region in the Pyrenees where two types of snapdragons meet. One type has yellow flowers with a magenta spot, while the other has magenta flowers with a yellow spot. The researchers found that seven genes work together to control the color patterns on these flowers.
Three genes control the magenta paintbrush, while four control the yellow paintbrush. In the hybrid zone where the two types meet, the genes from each type mix and create different color combinations, including orange and white. But surprisingly, these hybrid colors are less attractive to bees!
To understand why this is the case, the researchers looked at how natural selection acts on these genes. They found that the narrow region of gene mixing (only 1 km wide) allows them to estimate the strength of natural selection on each gene.
The team discovered that four paintbrush genes work together to create a gradient of yellow. For one type of snapdragon, this gradient is steep, producing a bright yellow spot. For the other type, the gradient is shallow, giving a soft blush of yellow.
But here's the amazing part: even though these color changes are very subtle and hard to see with our eyes, they can be detected by bees! This means that natural selection acts on each gene individually, fine-tuning its effect to attract more bees.
Why It Matters
This study is important for Indian students because it shows how plants adapt to their environment in amazing ways. Understanding how flowers change their colors can help us develop new methods for crop improvement and pollinator conservation.
Key Facts
- Wild snapdragons (Antirrhinum majus) change their color shades to attract bees.
- Seven genes work together to control the color patterns on these flowers.
- The study was conducted by researchers at the John Innes Centre in collaboration with colleagues from Austria, China, and Australia.
- The narrow region of gene mixing (1 km wide) allows researchers to estimate the strength of natural selection on each gene.
- Four paintbrush genes work together to create a gradient of yellow.
Key Terms
- Natural Selection
- The process by which organisms with favorable traits are more likely to survive and reproduce, passing those traits on to their offspring.
- Paintbrush Genes
- Genes that control the color patterns on flowers, like magenta and yellow paintbrushes.
Implications
This study is important for Indian students because it shows how plants adapt to their environment in amazing ways. Understanding how flowers change their colors can help us develop new methods for crop improvement and pollinator conservation.
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