Nickel tolerance of serpentine and non-serpentine Knautia arvensis plants as affected by arbuscular mycorrhizal symbiosis

0432826 - BÚ 2015 RIV DE eng J - Journal Article
Doubková, Pavla - Sudová, Radka
Nickel tolerance of serpentine and non-serpentine Knautia arvensis plants as affected by arbuscular mycorrhizal symbiosis.
Mycorrhiza. Roč. 24, č. 3 (2014), s. 209-217. ISSN 0940-6360. E-ISSN 1432-1890
R&D Projects: GA AV ČR KJB600050812
Institutional support: RVO:67985939
Keywords : arbuscular mycorrhizal * symbiosis * nickel toxicity * semi-hydroponics
Subject RIV: EF - Botanics
Impact factor: 3.459, year: 2014

A semi-hydroponic experiment involving three levels of nickel in hydroponic solution, and serpentine and non-serpentine isolates of arbuscular mycorrhizal fungi and populations of a model plant species (Knautia arvensis, Dipsacaceae) revealed considerable negative effects of elevated nickel concentrations on both plant and fungal performance. Plant growth response to nickel was independent of their origin from serpentine versus non-serpentine sites. However, higher nickel tolerance of serpentine plants was indicated by a smaller decline in the concentrations of photosynthetic pigments and restricted root-to-shoot nickel translocation. Inoculation with arbuscular mycorrhizal fungi, especially with the non-serpentine isolate, further aggravated nickel toxicity to host plants. Therefore, arbuscular mycorrhizal fungi do not appear to be involved in nickel tolerance of serpentine K. arvensis plants.
Permanent Link: http://hdl.handle.net/11104/0237188