2011
Genome Size and DNA Base Composition of Geophytes: the Mirror of Phenology and Ecology?
VESELÝ, PavelZákladní údaje
Originální název
Genome Size and DNA Base Composition of Geophytes: the Mirror of Phenology and Ecology?
Název česky
Velikost genomu a DNA kompozice bazí u geofytů: zrcadlo fenologie a ekologie?
Autoři
VESELÝ, Pavel (203 Česká republika, garant, domácí)
Vydání
Analytická cytometrie 2011, 2011
Další údaje
Jazyk
angličtina
Typ výsledku
Konferenční abstrakt
Obor
10600 1.6 Biological sciences
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Kód RIV
RIV/00216224:14310/11:00050576
Organizační jednotka
Přírodovědecká fakulta
ISBN
978-80-260-0676-3
UT WoS
000298191900006
Klíčová slova česky
geofyty; průduchy; evoluce velikosti genomu; genomický GC obsah; fenologie; ekologie
Klíčová slova anglicky
geophytes; stomata; genome size evolution; genomic GC content; phenology; ecology
Příznaky
Mezinárodní význam
Změněno: 15. 3. 2012 15:33, Mgr. Petr Šmarda, Ph.D.
Anotace
V originále
Genome size is known to affect various plant traits such as stomatal size, seed mass, and flower or shoot phenology. However, these associations are still not well understood for the species with giant genomes, mostly represented by geophytic plants. No detailed associations are known between DNA base composition and genome size or species ecology. Genome sizes and GC contents were measured using flow-cytometry in a worldwide sample of geophytes together tentative morpho-anatomical and ecological traits. Data were analyzed using conventional statistics and using analysis of phylogenetically independent contrasts. Increase in genome size was associated with earliness of flowering, tendency to grow in humid conditions, and tightly positively correlated with increase in stomatal size, namely in extremely large genomes. Seed mass of geophytes was closely related to their ecology, but not to genomic parameters. Genomic GC content showed unimodal relationship with genome size but no relation with species ecology. Evolution of genome size in geophytes is closely related with their ecology and phenology and also associates with remarkable changes in DNA base composition. While geophytism together with producing larger cells seems advantageous strategy for fast development of an organism in seasonal habitats, this is perhaps the drought sensitivity of large stomata which restrict the occurrence of geophytes with giant genomes to water non-stressed conditions.
Návaznosti
| GAP506/11/0890, projekt VaV |
| ||
| GP206/08/P222, projekt VaV |
| ||
| LC06073, projekt VaV |
| ||
| MSM0021622416, záměr |
|