KELLY, Laura J., Simon RENNY-BYFIELD, Jaume PELLICER, Jiří MACAS, Petr NOVÁK, Pavel NEUMANN, Martin LYSÁK, Peter D. DAY, Madeleine BERGER, Michael F. FAY, Richard A. NICHOLS, Andrew R. LEITCH and Ilia J. LEITCH. Analysis of the giant genomes of Fritillaria (Liliaceae) indicates that a lack of DNA removal characterizes extreme expansions in genome size. New Phytologist. HOBOKEN: WILEY-BLACKWELL, 2015, vol. 208, No 2, p. 596-607. ISSN 0028-646X. doi:10.1111/nph.13471.
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Basic information
Original name Analysis of the giant genomes of Fritillaria (Liliaceae) indicates that a lack of DNA removal characterizes extreme expansions in genome size
Authors KELLY, Laura J. (826 United Kingdom of Great Britain and Northern Ireland), Simon RENNY-BYFIELD (826 United Kingdom of Great Britain and Northern Ireland), Jaume PELLICER (840 United States of America), Jiří MACAS (203 Czech Republic), Petr NOVÁK (203 Czech Republic), Pavel NEUMANN (203 Czech Republic), Martin LYSÁK (203 Czech Republic, guarantor, belonging to the institution), Peter D. DAY (826 United Kingdom of Great Britain and Northern Ireland), Madeleine BERGER (826 United Kingdom of Great Britain and Northern Ireland), Michael F. FAY (826 United Kingdom of Great Britain and Northern Ireland), Richard A. NICHOLS (826 United Kingdom of Great Britain and Northern Ireland), Andrew R. LEITCH (826 United Kingdom of Great Britain and Northern Ireland) and Ilia J. LEITCH (826 United Kingdom of Great Britain and Northern Ireland).
Edition New Phytologist, HOBOKEN, WILEY-BLACKWELL, 2015, 0028-646X.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10600 1.6 Biological sciences
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 7.210
RIV identification code RIV/00216224:14740/15:00081441
Organization unit Central European Institute of Technology
Doi http://dx.doi.org/10.1111/nph.13471
UT WoS 000364654200028
Keywords in English DNA deletion; Fritillaria; genome size evolution; genome turnover; Liliaceae; repetitive DNA; transposable elements (TEs)
Tags OA, rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Eva Špillingová, učo 110713. Changed: 5. 4. 2016 13:09.
Abstract
Plants exhibit an extraordinary range of genome sizes, varying by > 2000-fold between the smallest and largest recorded values. In the absence of polyploidy, changes in the amount of repetitive DNA (transposable elements and tandem repeats) are primarily responsible for genome size differences between species. However, there is ongoing debate regarding the relative importance of amplification of repetitive DNA versus its deletion in governing genome size. Using data from 454 sequencing, we analysed the most repetitive fraction of some of the largest known genomes for diploid plant species, from members of Fritillaria. We revealed that genomic expansion has not resulted from the recent massive amplification of just a handful of repeat families, as shown in species with smaller genomes. Instead, the bulk of these immense genomes is composed of highly heterogeneous, relatively low-abundance repeat-derived DNA, supporting a scenario where amplified repeats continually accumulate due to infrequent DNA removal. Our results indicate that a lack of deletion and low turnover of repetitive DNA are major contributors to the evolution of extremely large genomes and show that their size cannot simply be accounted for by the activity of a small number of high-abundance repeat families.
Links
GBP501/12/G090, research and development projectName: Evoluce a funkce komplexních genomů rostlin
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