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- W1902488232 abstract "In higher plant genomes, most sequences are unexpression sequence, the proportion of a genome that encodes for genes may be very small. Understanding gene distribution in the genome is a very important aspect for invastigating the genome structure. Funded by the U.S. Department of Energy, a clonal Populus trichocarpa genome sequencing has been completed and released to the public. The accomplishment of poplar genome offers us a unique opportunity to survey the gene distribution in the genome of a forest tree. In this paper, based on Poisson calculator, we investigated the gene density of various chromosomes in poplar genome. As a result, we found that gene density is significantly different among chromosomes in poplar genome. Modern poplar genome arose from an ancient whole genome duplication event, known as “salicoid duplication”. Thus poplar genome shared large duplication segments among different chromosome members. However, our results demonstrated that gene abundance pattern was different from the chromosomal duplication pattern of poplar genome. This implied the duplicated genes lost at different rates on the duplicated chromosomes following the salicoid duplication. Meanwhile, based on alignment with about 90 thousands ESTsi¼Œwe found that only 16.8% of the predicted gene models in poplar genome had EST proofs. Although, EST sequencing is an attractive alternative to whole genome sequencing for gene identification, the power of small scale EST sequencing study should be properly evaluated since with limited number of EST sequences, genes captured by ESTs are fairly limited." @default.
- W1902488232 created "2016-06-24" @default.
- W1902488232 creator A5036832151 @default.
- W1902488232 date "2010-01-01" @default.
- W1902488232 modified "2023-09-25" @default.
- W1902488232 title "Differentiation of Gene Richness on Duplicated Chromosomes and Survey of Genes Captured by ESTs in Poplar Genome" @default.
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- W1902488232 doi "https://doi.org/10.5376/gab.2010.01.0003" @default.
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