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The contents of free amino acids and elements in As-hyperaccumulator Pteris cretica and non-hyperaccumulator Pteris straminea during reversible senescence

Author

Listed:
  • Daniela PAVLÍKOVÁ

    (Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Veronika ZEMANOVÁ

    (Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Prague, Czech Republic)

  • Milan PAVLÍK

    (Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Prague, Czech Republic)

Abstract

The objectives of this study were to analyse the relationship between the contents of elements and free amino acids (AAs) in fronds of As-hyperaccumulator Pteris cretica cv. Albo-lineata (PC) and non-hyperaccumulator Pteris straminea (PS) during reversible senescence. The time-course effect on senescence was also investigated. The two ferns were grown in a pot experiment with soil containing 16 mg Astotal/kg soil for 160 days. The contents of elements and AAs in both ferns and in individual sampling periods differed. The highest accumulation of elements and AAs was measured in PS fronds after 83 days; however, the accumulation of As, Ca, Cu, Fe, Mg, P and asparagin in PC fronds was highest after 160 days. The results of principal component analysis showed more rapid senescence of PS compared to PC. This was caused by changes in the relationship between the contents of elements (cofactors of metalloenzymes, stress metabolites) and AAs (transport of NH2 group and stress metabolites). The hyperaccumulator plant (PC) was more resistant than the bioindicator plant (PS) to the conversion from reversible to irreversible senescence.

Suggested Citation

  • Daniela PAVLÍKOVÁ & Veronika ZEMANOVÁ & Milan PAVLÍK, 2017. "The contents of free amino acids and elements in As-hyperaccumulator Pteris cretica and non-hyperaccumulator Pteris straminea during reversible senescence," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 63(10), pages 455-460.
    • Handle: RePEc:caa:jnlpse:v:63:y:2017:i:10:id:606-2017-pse
    DOI: 10.17221/606/2017-PSE
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    References listed on IDEAS

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    1. D. Pavlíková & M. Pavlík & L. Staszková & P. Tlustoš & J. Száková & J. Balík, 2007. "The effect of potentially toxic elements and sewage sludge on the activity of regulatory enzyme glutamate kinase," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 53(5), pages 201-206.
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