Serpentine ecotypic differentiation in a polyploid plant complex: shared tolerance to Mg and Ni stress among di- and tetraploid serpentine populations of Knautia arvensis (Dipsacaceae)

0440696 - BÚ 2015 RIV NL eng J - Journal Article
Kolář, Filip - Dortová, M. - Lepš, J. - Pouzar, M. - Krejčová, A. - Štech, M.
Serpentine ecotypic differentiation in a polyploid plant complex: shared tolerance to Mg and Ni stress among di- and tetraploid serpentine populations of Knautia arvensis (Dipsacaceae).
Plant and Soil. Roč. 374, 1-2 (2014), s. 435-447. ISSN 0032-079X. E-ISSN 1573-5036
R&D Projects: GA AV ČR(CZ) KJB601110627; GA AV ČR KJB600050812
Institutional support: RVO:67985939
Keywords : adaptation * Ca-Mg ratio * ploidy level
Subject RIV: EF - Botanics
Impact factor: 2.952, year: 2014

Regardless of ploidy level, serpentine populations of Knautia arvensis exhibited higher tolerance to both Mg and Ni stress than their non-serpentine counterparts, suggesting an adaptive character of these traits in K. arvensis. The effect of ploidy was rather weak and confined to a slightly better response of serpentine tetraploids to Mg stress and to higher biomass yields in tetraploids from both soil types.
Permanent Link: http://hdl.handle.net/11104/0243803