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New genomic study provides a glimpse of how whales could adapt to ocean
Date:11/24/2013

ht produce more reactive oxygen species (ROS), harmful compounds that can damage DNA. Glutathione is a well-known antioxidant that prevents damage to important cellular components by ROS. In this study, researchers provided evidence to support that there is an increased ratio of reduced glutathione/glutathione disulfide when suffering hypoxic or oxidative stress.

Minke whales and other Mysticeti whale species grow baleen instead of teeth. It's previously reported that the genes ENAM, MMP, and AMEL might play a role in tooth enamel formation and biomineralization. This study showed that these genes may be pseudogenes with early stop codons in the baleen whales. In addition, researchers found that the gene families related to whale's body hair and sensory receptors were contracted, such as Keratin-related gene families associated with hair formation, several Hox genes that play an important role in the body plan and embryonic development.

Xuanmin Guang, project manager from BGI, said, "Minke whale is the first marine mammal that has been sequenced with such high-depth genome coverage. The genome data not only can help us know much more about the adaption mechanisms underlying minke whale, but also provides invaluable resource for marine mammal's future studies such as diseases control and prevention, species conservation,and protection."


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Contact: Jia Liu
liujia@genomics.cn
BGI Shenzhen
Source:Eurekalert

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