2013
Effect of phosphorus availability on the selection of species with different ploidy levels and genome sizes in a long-term grassland fertilization experiment
ŠMARDA, Petr, Michal HEJCMAN, Alexandra BŘEZINOVÁ, Lucie HOROVÁ, Helena STEIGEROVÁ et. al.Základní údaje
Originální název
Effect of phosphorus availability on the selection of species with different ploidy levels and genome sizes in a long-term grassland fertilization experiment
Autoři
ŠMARDA, Petr (203 Česká republika, garant, domácí), Michal HEJCMAN (203 Česká republika), Alexandra BŘEZINOVÁ (203 Česká republika, domácí), Lucie HOROVÁ (203 Česká republika, domácí), Helena STEIGEROVÁ (203 Česká republika, domácí), František ZEDEK (203 Česká republika, domácí), Petr BUREŠ (203 Česká republika, domácí), Pavla HEJCMANOVÁ (203 Česká republika) a Juergen SCHELLBERG (276 Německo)
Vydání
New Phytologist, 2013, 1469-8137
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10611 Plant sciences, botany
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 6.545
Kód RIV
RIV/00216224:14310/13:00067001
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000325555400031
Klíčová slova anglicky
DNA content; flow cytometry; nutrient limitation; phosphorus; plant primary CSR strategies; polyploid ecology; polyploidy; Rengen Grassland Experiment
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 13. 3. 2018 10:37, prof. RNDr. Petr Bureš, Ph.D.
Anotace
V originále
Polyploidy and increased genome size are hypothesized to increase organismal nutrient demands, namely of phosphorus (P), which is an essential and abundant component of nucleic acids. Therefore, polyploids and plants with larger genomes are expected to be selectively disadvantaged in P-limited environments. However, this hypothesis has yet to be experimentally tested. We measured the somatic DNA content and ploidy level in 74 vascular plant species in a long-term fertilization experiment. The differences between the fertilizer treatments regarding the DNA content and ploidy level of the established species were tested using phylogeny-based statistics. The percentage and biomass of polyploid species clearly increased with soil P in particular fertilizer treatments, and a similar but weaker trend was observed for the DNA content. These increases were associated with the dominance of competitive life strategy (particularly advantageous in the P-treated plots) in polyploids and the enhanced competitive ability of dominant polyploid grasses at high soil P concentrations, indicating their increased P limitation. Our results verify the hypothesized effect of P availability on the selection of polyploids and plants with increased genome sizes, although the relative contribution of increased P demands vs increased competitiveness as causes of the observed pattern requires further evaluation.
Návaznosti
GAP505/11/0881, projekt VaV |
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