genome

Paris japonica has the world’s longest genome

Especially relevant now that the world is focusing on biodiversity with the COP 10 conference in Nagoya, the Kew Royal Botanic Gardens has identified Paris japonica as having the world’s longest genome sequence, fifty times greater than the human genome.

Scientific American reports that plants with more DNA take longer to grow and to reproduce, making them especially endangered. This sub-alpine canopy plant has only seven known habitats in the world. More details in the September 2010 issue of the Botanical Journal of the Linnean Society.

I wonder if my United States readers know that our country is the only one of 193 countries that did not sign the 1993 Rio de Janeiro Convention on Biodiversity, and has only observer rather than voting status at this month’s Nagoya COP 10 conference.

(Thank you, Christophe, for sending me this news story. With the mutual French-Japanese attraction, this plant has a charmed name as well as a 100 meter genome strand).