Sunflowers' invisible colours are revealed

Sunflowers' invisible colours are revealed
Sunflowers' invisible colours are revealed

They brighten our days with their sunny, vibrant and summery feel.

But as it turns out sunflowers are not just pretty to look at, they also have a hidden feature that may offer clues as to how plants can adapt to climate change.

That's because an ultraviolet (UV) bullseye pattern — which is invisible to humans — not only helps their flowers attract pollinators but also enables the plant to respond to stresses such as drought or extreme temperatures.

Experts from the University of British Columbia (UBC) found that the same molecules that produce these UV patterns in sunflowers are also involved in helping the plant to regulate water loss.

Their discovery potentially provides an insight into how plants can adapt to different climates.

Discovery: Sunflowers are not just pretty to look at, they also have a UV bullseye pattern (pictured) that may offer clues as to how plants can adapt to climate change, a study has found

Discovery: Sunflowers are not just pretty to look at, they also have a UV bullseye pattern (pictured) that may offer clues as to how plants can adapt to climate change, a study has found

That's because an ultraviolet bullseye pattern (pictured middle) — which is invisible to humans — not only helps their flowers attract pollinators but also enables the plant to respond to stresses such as drought or extreme temperatures

That's because an ultraviolet bullseye pattern (pictured middle) — which is invisible to humans — not only helps their flowers attract pollinators but also enables the plant to respond to stresses such as drought or extreme temperatures

NATURE'S REMARKABLE ABILITY TO COPE WITH CLIMATE CHANGE

As the planet warms, animals and plants are learning to adapt to their new environment by either migrating or evolving, new research has revealed.

Many scientists believe the rate of climate change is too rapid for various species to keep up.

But two studies released last year have offered some hope that experts may have underestimated their abilities.

The first study reveals how a species of butterfly named the quino checkerspot has defied expectations of extinction by moving to cooler climes and changing its diet.

Separate research led by Stanford University scientist Steve Palumbi found how some corals can quickly switch on or off certain genes in order to survive in warmer-than-average tidal waters.

The research team discovered corals can adjust their internal functions to tolerate hot water 50 times faster than they would adapt through evolutionary change alone.

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'Unexpectedly, we noticed that sunflowers growing in drier climates had flowers with larger UV bullseyes, and found that those flowers are able to retain water more efficiently,' said lead author Dr. Marco Todesco, a research associate at UBC's biodiversity research centre and

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