J 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.

Basic information

Original name

Effect of phosphorus availability on the selection of species with different ploidy levels and genome sizes in a long-term grassland fertilization experiment

Authors

ŠMARDA, Petr (203 Czech Republic, guarantor, belonging to the institution), Michal HEJCMAN (203 Czech Republic), Alexandra BŘEZINOVÁ (203 Czech Republic, belonging to the institution), Lucie HOROVÁ (203 Czech Republic, belonging to the institution), Helena STEIGEROVÁ (203 Czech Republic, belonging to the institution), František ZEDEK (203 Czech Republic, belonging to the institution), Petr BUREŠ (203 Czech Republic, belonging to the institution), Pavla HEJCMANOVÁ (203 Czech Republic) and Juergen SCHELLBERG (276 Germany)

Edition

New Phytologist, 2013, 1469-8137

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10611 Plant sciences, botany

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 6.545

RIV identification code

RIV/00216224:14310/13:00067001

Organization unit

Faculty of Science

UT WoS

000325555400031

Keywords in English

DNA content; flow cytometry; nutrient limitation; phosphorus; plant primary CSR strategies; polyploid ecology; polyploidy; Rengen Grassland Experiment

Tags

Tags

International impact, Reviewed
Změněno: 13/3/2018 10:37, prof. RNDr. Petr Bureš, Ph.D.

Abstract

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.

Links

GAP505/11/0881, research and development project
Name: Eko-geografická limitace velkých genomů u krytosemenných rostlin: role fosforu (Acronym: FosforGS)
Investor: Czech Science Foundation