Gossypium as a model for polyploidy, evolutionary genomics and development. There are a number of
characteristics that render cotton an excellent model for the proposed studies. These include: (1) the nature of
the trait of most interest (fiber), which is single-celled,
morphologically diverse among species and
developmentally less challenging to study than other
plant traits; (2) parallel domestication of two
allopolyploids, G. hirsutum and G. barbadense; (3) a
well-understood evolutionary history, providing a grounded understanding of antecedent and descendant conditions
in a temporal context; (4) the existence of natural and cultivated
polyploids that are sufficiently old for
adaptive evolution to have taken place, as well as living models of the
diploid progenitors; (5) an extensive set of
genomic tools and resources to facilitate sophisticated experiments
(many developed under prior NSF support), including extensive
BAC resources and
and (6) a US Department of Energy Joint Genome Institute "Community Sequencing Program" (led by
Paterson), nearing completion, to provide 500 Mb (0.6x) genome sequence for G. raimondii (D genome). The
cotton research community has recently converged on a sequencing strategy. Thus, these are exciting times to be
involved in cotton research.
Visit the Wendel lab site for more information on fiber evolution.
Visit the Wendel lab site for more information on gene expression.