Genomic Plasticity and the Diversity of Polyploid Plants

by: AR Leitch, IJ Leitch

Science, Vol. 320, No. 5875. (25 April 2008), pp. 481-483.

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Abstract

Polyploidy, a change whereby the entire chromosome set is multiplied, arises through mitotic or meiotic misdivisions and frequently involves unreduced gametes and interspecific hybridization. The success of newly formed angiosperm polyploids is partly attributable to their highly plastic genome structure, as manifested by tolerance to changing chromosome numbers (aneuploidy and polyploidy), genome size, (retro)transposable element mobility, insertions, deletions, and epigenome restructuring. The ability to withstand large-scale changes, frequently within one or a few generations, is associated with a restructuring of the transcriptome, metabolome, and proteome and can result in an altered phenotype and ecology. Thus, polyploid-induced changes can generate individuals that are able to exploit new niches or to outcompete progenitor species. This process has been a major driving force behind the divergence of the angiosperms and their biodiversity. 10.1126/science.1153585

@article{citeulike:2719011, abstract = {Polyploidy, a change whereby the entire chromosome set is multiplied, arises through mitotic or meiotic misdivisions and frequently involves unreduced gametes and interspecific hybridization. The success of newly formed angiosperm polyploids is partly attributable to their highly plastic genome structure, as manifested by tolerance to changing chromosome numbers (aneuploidy and polyploidy), genome size, (retro)transposable element mobility, insertions, deletions, and epigenome restructuring. The ability to withstand large-scale changes, frequently within one or a few generations, is associated with a restructuring of the transcriptome, metabolome, and proteome and can result in an altered phenotype and ecology. Thus, polyploid-induced changes can generate individuals that are able to exploit new niches or to outcompete progenitor species. This process has been a major driving force behind the divergence of the angiosperms and their biodiversity. 10.1126/science.1153585}, author = {Leitch, A. R. and Leitch, I. J. }, citeulike-article-id = {2719011}, doi = {10.1126/science.1153585}, journal = {Science}, keywords = {diversification, gene\_duplication, phenotype, plant, plasticity, polyploid}, month = {April}, number = {5875}, pages = {481--483}, posted-at = {2008-04-25 17:42:38}, priority = {2}, title = {Genomic Plasticity and the Diversity of Polyploid Plants}, url = {http://dx.doi.org/10.1126/science.1153585}, volume = {320}, year = {2008} }

RIS record

TY - JOUR ID - citeulike:2719011 L3 - citeulike-article-id:2719011 TI - Genomic Plasticity and the Diversity of Polyploid Plants JF - Science VL - 320 IS - 5875 SP - 481 EP - 483 N2 - Polyploidy, a change whereby the entire chromosome set is multiplied, arises through mitotic or meiotic misdivisions and frequently involves unreduced gametes and interspecific hybridization. The success of newly formed angiosperm polyploids is partly attributable to their highly plastic genome structure, as manifested by tolerance to changing chromosome numbers (aneuploidy and polyploidy), genome size, (retro)transposable element mobility, insertions, deletions, and epigenome restructuring. The ability to withstand large-scale changes, frequently within one or a few generations, is associated with a restructuring of the transcriptome, metabolome, and proteome and can result in an altered phenotype and ecology. Thus, polyploid-induced changes can generate individuals that are able to exploit new niches or to outcompete progenitor species. This process has been a major driving force behind the divergence of the angiosperms and their biodiversity. 10.1126/science.1153585 KW - diversification KW - gene_duplication KW - phenotype KW - plant KW - plasticity KW - polyploid AU - Leitch, AR AU - Leitch, IJ PY - 2008/04/25/ UR - http://dx.doi.org/10.1126/science.1153585 ER -

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