Publication Date:
2013-12-21
Description:
Amborella trichopoda is strongly supported as the single living species of the sister lineage to all other extant flowering plants, providing a unique reference for inferring the genome content and structure of the most recent common ancestor (MRCA) of living angiosperms. Sequencing the Amborella genome, we identified an ancient genome duplication predating angiosperm diversification, without evidence of subsequent, lineage-specific genome duplications. Comparisons between Amborella and other angiosperms facilitated reconstruction of the ancestral angiosperm gene content and gene order in the MRCA of core eudicots. We identify new gene families, gene duplications, and floral protein-protein interactions that first appeared in the ancestral angiosperm. Transposable elements in Amborella are ancient and highly divergent, with no recent transposon radiations. Population genomic analysis across Amborella's native range in New Caledonia reveals a recent genetic bottleneck and geographic structure with conservation implications.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Amborella Genome Project -- New York, N.Y. -- Science. 2013 Dec 20;342(6165):1241089. doi: 10.1126/science.1241089.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24357323" target="_blank"〉PubMed〈/a〉
Keywords:
Conservation of Natural Resources
;
Contig Mapping
;
*Evolution, Molecular
;
Flowers/*genetics
;
Gene Duplication
;
Genetic Variation
;
*Genome, Plant
;
Metagenomics/statistics & numerical data
;
Molecular Sequence Annotation
;
Multigene Family
;
New Caledonia
;
Phylogeny
;
Sequence Analysis, DNA
;
Tracheobionta/classification/*genetics/*growth & development
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
