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The Plant Cell, Vol. 13, 1735-1747, August 2001, Copyright © 2001,
American Society of Plant Biologists

Allopolyploidy-Induced Rapid Genome Evolution in the Wheat (Aegilops–Triticum) Group

Hakan Ozkan1, Avraham A. Levy and Moshe Feldman2

Department of Plant Sciences, The Weizmann Institute of Science, Rehovot 72100, Israel

2 To whom correspondence should be addressed. E-mail moshe.feldman{at}weizmann.ac.il; fax 972-8-9344160

To better understand genetic events that accompany allopolyploid formation, we studied the rate and time of elimination of eight DNA sequences in F1 hybrids and newly formed allopolyploids of Aegilops and Triticum. In total, 35 interspecific and intergeneric F1 hybrids and 22 derived allopolyploids were analyzed and compared with their direct parental plants. The studied sequences exist in all the diploid species of the Triticeae but occur in only one genome, either in one homologous pair (chromosome-specific sequences [CSSs]) or in several pairs of the same genome (genome-specific sequences [GSSs]), in the polyploid wheats. It was found that rapid elimination of CSSs and GSSs is a general phenomenon in newly synthesized allopolyploids. Elimination of GSSs was already initiated in F1 plants and was completed in the second or third allopolyploid generation, whereas elimination of CSSs started in the first allopolyploid generation and was completed in the second or third generation. Sequence elimination started earlier in allopolyploids whose genome constitution was analogous to natural polyploids compared with allopolyploids that do not occur in nature. Elimination is a nonrandom and reproducible event whose direction was determined by the genomic combination of the hybrid or the allopolyploid. It was not affected by the genotype of the parental plants, by their cytoplasm, or by the ploidy level, and it did not result from intergenomic recombination. Allopolyploidy-induced sequence elimination occurred in a sizable fraction of the genome and in sequences that were apparently noncoding. This finding suggests a role in augmenting the differentiation of homoeologous chromosomes at the polyploid level, thereby providing the physical basis for the diploid-like meiotic behavior of newly formed allopolyploids. In our view, this rapid genome adjustment may have contributed to the successful establishment of newly formed allopolyploids as new species.




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[Abstract] [Full Text] [PDF]

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[Full Text] [PDF]

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[Abstract] [Full Text] [PDF]

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[Abstract] [Full Text] [PDF]

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[Abstract] [Full Text] [PDF]

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