Difference between revisions of "Eudicot paleohexaploidy"
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This event refers to the paleohexaploid origins of all sequenced eudicots to date, sampled from the eurosids and asterids. The ancestor to the radiation of these lineages was a hexaploid. The first published evidence for this came from the syntenic analysis of the grape genome. The [[syntenic dotplot]] of grape's genome to itself showed that each region of its genome was syntenic to two other intragenomic regions. This can be most easily and parsimoniously explained if grape was an ancient hexaploid. Further analysis showed that this event was shared in all other sequenced rosid genomes, and subsequently in asterid genomes. | This event refers to the paleohexaploid origins of all sequenced eudicots to date, sampled from the eurosids and asterids. The ancestor to the radiation of these lineages was a hexaploid. The first published evidence for this came from the syntenic analysis of the grape genome. The [[syntenic dotplot]] of grape's genome to itself showed that each region of its genome was syntenic to two other intragenomic regions. This can be most easily and parsimoniously explained if grape was an ancient hexaploid. Further analysis showed that this event was shared in all other sequenced rosid genomes, and subsequently in asterid genomes. | ||
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| + | [[Image:Master 43 43.CDS-CDS.blastn.dag.go c4 D20 g10 A5.aligncoords.gcoords ct0.w1200.gene.png|thumb|right|600px|[[Syntenic dotplot]] of grape versus itself. Each genomic region of grape is syntenic with two other intragenomic regions. This is evidence that grape is an ancient hexaploid. This hexaploid nature of its genome is shared with all other rosids and asterids (nearly the entire eudicot group). This analysis can be regenerated at: http://synteny.cnr.berkeley.edu/CoGe/SynMap.pl?dsgid1=43;dsgid2=43;c=4;D=20;g=10;A=5;Dm=0;gm=0;w=0;b=1;ft1=1;ft2=1;do1=1;do2=1;do=40;dt=geneorder;am=g]] | ||
Revision as of 14:51, 26 March 2010
This event refers to the paleohexaploid origins of all sequenced eudicots to date, sampled from the eurosids and asterids. The ancestor to the radiation of these lineages was a hexaploid. The first published evidence for this came from the syntenic analysis of the grape genome. The syntenic dotplot of grape's genome to itself showed that each region of its genome was syntenic to two other intragenomic regions. This can be most easily and parsimoniously explained if grape was an ancient hexaploid. Further analysis showed that this event was shared in all other sequenced rosid genomes, and subsequently in asterid genomes.
Syntenic dotplot of grape versus itself. Each genomic region of grape is syntenic with two other intragenomic regions. This is evidence that grape is an ancient hexaploid. This hexaploid nature of its genome is shared with all other rosids and asterids (nearly the entire eudicot group). This analysis can be regenerated at: http://synteny.cnr.berkeley.edu/CoGe/SynMap.pl?dsgid1=43;dsgid2=43;c=4;D=20;g=10;A=5;Dm=0;gm=0;w=0;b=1;ft1=1;ft2=1;do1=1;do2=1;do=40;dt=geneorder;am=g
