Understanding intraspecific variation in genome size in plants

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Authors

ŠMARDA Petr BUREŠ Petr

Year of publication 2010
Type Article in Periodical
Magazine / Source Preslia
MU Faculty or unit

Faculty of Science

Citation
Web http://www.preslia.cz/members/P101Smarda.pdf
Field Botany
Keywords chromosome segregation; DNA content; genome size evolution; inheritance; microevolution; natural selection; nucleotype effect; phenotypic effect; spatio-temporal variation
Description Intraspecific variation in genome size makes it possible to study ongoing processes of genome size evolution. Although there are over 200 papers on intraspecific variation in genome size, there is still limited understanding of this phenomenon, especially as many of these papers are based on weak methodology and therefore report biased or false evidence of the extent of intraspecific variation. In this paper the recent progress in understanding the spatio-temporal dynamics of intraspecific variation in genome size caused by the gradual accumulation of mutations is reviewed. The results of the case studies on Microseris douglasii, Zea mays, Silene latifolia, Hordeum spontaneum and Lolium hybrids, and in particular that on Festuca pallens, are discussed.
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