Epigenetics: Sugar causes bee genes to express differently than honey
|July 21, 2014||Posted by News under Epigenetics, News|
Beekeepers often save money by overwintering their hives with sugar. And that may play a role in the widespread problem of colony collapse disorder.
The researchers focused on gene activity in response to feeding with honey, high-fructose corn syrup (HFCS), or sucrose. They found that those bees fed honey had a very different profile of gene activity in the fat body than those relying on HFCS or sucrose. Hundreds of genes showed differences in activity in honey bees consuming honey compared with those fed HFCS or sucrose. These differences remained even in an experimental hive that the researchers discovered was infected with deformed wing virus, one of the many maladies that afflict honey bees around the world.
“Our results parallel suggestive findings in humans,” Robinson said. “It seems that in both bees and humans, sugar is not sugar — different carbohydrate sources can act differently in the body.”
Some of the genes that were activated differently in the honey-eating bees have been linked to protein metabolism, brain-signaling and immune defense. The latter finding supports a 2013 study led by U. of I. entomology professor and department head May Berenbaum, who reported that some substances in honey increase the activity of genes that help the bees break down potentially toxic substances such as pesticides.
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