Origin, inheritance, and gene regulatory consequences of genome dominance in polyploids
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- Margaret R. Woodhouse
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720;
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- Feng Cheng
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720;
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- J. Chris Pires
- Division of Biological Sciences, University of Missouri, Columbia, MO 65211
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- Damon Lisch
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720;
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- Michael Freeling
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720;
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- Xiaowu Wang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; and
Description
<jats:title>Significance</jats:title> <jats:p> Ancient plant polyploids contain dissimilar subgenomes. Subgenomes that have lost fewer genes are subgenomes that tend to express their genes to higher mRNA levels: “genome dominance.” Genome dominance is heritable through multiple rounds of polyploidy and over tens of millions of years. Twenty-four–nucleotide RNA coverage of noncoding, transposon DNA upstream of genes marks the recessive subgenomes of <jats:italic>Brassica rapa</jats:italic> and <jats:italic>Arabidopsis</jats:italic> with only a small effect of gene expression. We hypothesize that the “diploid” parent of a tetraploidy with the lowest transposon load was to become the dominant subgenome. The balance of transposon position effects on genes is important for the regulation of quantity (and perhaps to solve the heterosis and C-value paradoxes). </jats:p>
Journal
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 111 (14), 5283-5288, 2014-03-24
Proceedings of the National Academy of Sciences
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Details 詳細情報について
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- CRID
- 1363388845098586240
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- ISSN
- 10916490
- 00278424
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- Data Source
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- Crossref
