Transcriptomic analysis of growth heterosis in larval Pacific oysters (Crassostrea gigas).

ABSTRACT: Compared with understanding of biological shape and form, knowledge is sparse regarding what regulates growth and body size of a species. For example, the genetic and physiological causes of heterosis (hybrid vigor) have remained elusive for nearly a century. Here, we investigate gene-expression patterns underlying growth heterosis in the Pacific oyster (Crassostrea gigas) in two partially inbred (f = 0.375) and two hybrid larval populations produced by a reciprocal cross between the two inbred families. We cloned cDNA and generated 4.5 M sequence tags with massively parallel signature sequencing. The sequences contain 23,274 distinct signatures that are expressed at statistically nonzero levels and show a highly positively skewed distribution with median and modal counts of 9.25 million a

SUBMITTER: Hedgecock D 

PROVIDER: S-EPMC1790866 | biostudies-literature | 2007 Feb

REPOSITORIES: biostudies-literature