Genome Resequencing in Populus: Revealing Large-Scale Genome Variation and Implications on Specialized-Trait Genomics
To date, Populus ranks among a few plant species with complete genome sequences and other highly developed genomic resources. With the first reference genome among all tree species, Populus has been adopted as a suitable model organism for genomic studies in trees. However, far from being just a model species, Populus is a key renewable resource that plays a significant role in providing raw materials for the biofuel and pulp and paper industries. Therefore, aside from leading frontiers of basic tree molecular biology and ecological research, Populus leads frontiers in addressing global economic challenges related to fuel and fiber production. The latter fact suggests that research aimed at improving quality and quantity of Populus as a raw material will likely drive the pursuit of more targeted and deeper research in order to unlock the economic potential tied in biological processes that drive this tree species. Advances in genome sequence-driven technologies, such as resequencing individual genotypes, which in turn facilitates large scale SNP discovery and identification of large scale polymorphisms are key determinants of future success in these initiatives. In this treatise we discuss implications of genome sequence-enable technologies on Populus genomic and genetic studies of complex and specialized traits.
KeywordsQuantitative Trait Locus Deletion Polymorphism INDEL Polymorphism Populus Genome Cell Wall Characteristic
This work was supported, in part, by the BioEnergy Science Center and by the Office of Science, Biological and Environmental Research (BER), as part of the Plant Microbe Interfaces Scientific Focus Area at Oak Ridge National Laboratory. Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the U.S. Dept. of Energy under contract DE-AC05-00OR22725. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. No additional external funding received for this study.
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