Scientists sequence giant panda genome to shed new light into the bear's diet

Washington, Feb 22 (ANI): By successfully sequencing the panda genome for the first time, an international team of scientists has shed new light on some of the giant panda's unusual biological traits, including its famously restricted diet.

Professor Mike Bruford, Cardiff School of Biosciences, worked on the study as part of an ongoing collaboration with the Chinese Academy of Sciences, Institute of Zoology, funded by the Royal Society.

Giant pandas are known for their bamboo diet, but the researchers discovered that the animal actually lacks the genes necessary for compete digestion of this staple food source.

"The panda is a true bear and is a carnivore, so it possesses the genes necessary for being a meat-eater and yet its diet is almost exclusively herbivorous," said Bruford.

This may suggest that it relies on microbes in its gut to digest bamboo rather than on anything in its genetic make-up.

"Taste is also important when it comes to the development of dietary habits and the sequencers discovered mutations in the panda's T1R1 gene which may affect its ability to taste meat, one possible explanation for why a potential carnivore would rely on a strict bamboo diet," said Bruford.

The study found no signs of low variation that is usually linked to inbreeding and results support the potential for successful survival despite the small population size of the species.

In spite of the panda's low reproduction rates, the study also identified nearly all the reproduction genes critical for mammalian gonad function and development.

According to Bruford, "The panda is at high risk of extinction, with current estimates putting total population figures at less than 3,000. The study gives us a fuller understanding of the genetic basis of the panda's biology, and will contribute to disease control and conservation efforts."

"Sequencing mammalian genomes also undoubtedly helps our ability to annotate the human genome," he said. (ANI)