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Photosystem II of barley seedlings under cadmium and lead stress

Author

Listed:
  • H.M. Kalaji

    (Department of Plant Physiology, Warsaw University of Life Sciences, Warsaw, Poland)

  • T. Loboda

    (Department of Sanitary Biology and Biotechnology, Bialystok University of Technology, Bialystok, Poland)

Abstract

Chlorophyll a fluorescence measurements were carried out on two barley (Hordeum vulgare L.) cultivars Arabi Abiad and Arabi Aswad at 8 and 14 days after emergence to identify their early tolerance mechanism for heavy metals (25 and 50μM of cadmium and lead). Transient fluorescence curves (OJIP curves) and energy flux models showed different specific reactions of photosystem II (PSII) of each cultivar to each type of stress. After 7 days of lead stress application plants of cv. A. Aswad showed weaker I and P peaks on the OJIP curve than control plants, and the appearance of a new K step; parameters of phenomenological energy fluxes for cv. A. Abiad were similar to those for control plants and only some silent reaction centers appeared. Generally, parameters of energy fluxes within PSII were directly shifted shortly (24 h) after the application of both heavy metals, especially in the case of plants grown under cadmium treatment. This suggests that these parameters could be good indicators for monitoring of these two pollutants in the environment at early stages of plant development.

Suggested Citation

  • H.M. Kalaji & T. Loboda, 2007. "Photosystem II of barley seedlings under cadmium and lead stress," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 53(12), pages 511-516.
    • Handle: RePEc:caa:jnlpse:v:53:y:2007:i:12:id:2191-pse
    DOI: 10.17221/2191-PSE
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    Cited by:

    1. So. Asadi Kapourchal & Sa. Asadi Kapourchal & E. Pazira & M. Homaee, 2009. "Assessing radish (Raphanus sativus L.) potential for phytoremediation of lead-polluted soils resulting from air pollution," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 55(5), pages 202-206.
    2. A.S. Emami & M. Tabari Kouchaksaraei & N. Bahramifar & A. Salehi, 2016. "Gas exchange responses of two poplar clones (Populus euramericana (Dode) Guinier 561/41 and Populus nigra Linnaeus 63/135) to lead toxicity," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 62(9), pages 422-428.

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