NaCl induced cross-acclimation to UV-B radiation in four Barley (Hordeum vulgare L.) cultivars

• Autorzy: Cakirlar H. , Cicek N. , Fedina I. , Georgieva K. , Dogru A. , Velitchkova M.
• Języki publikacji: EN

Abstrakty

EN

The effect of pre-treatment with 200 mM NaCl on the response of four barley cultivars (Hordeum vulgare L. cv. Bülbül-89, Kalaycı-97, Tarm-92 and Tokak-157/37) to UV-B radiation was investigated. Salt stress as well as UV-B irradiation led to a decrease of the total chlorophyll (chl) content in all cultivars, except in Kalaycı-97. While carotenoids are almost not affected by NaCl treatment, UV-B irradiation caused an increase by 5–20% of carotenoid content of all cultivars. UV-B induced damages of photosynthetic apparatus were estimated by the rate of photosynthetic electron transport measured by chl fluorescence and the rate of oxygen evolution, the latter being more affected. Pre-treatment with NaCl alleviated harmful effect of UV-B irradiation on Fv/Fm and ETR, but not on oxygen evolution. UV-B-induced and UV-B-absorbing compounds with absorption at 300 and 438 nm increased as a result of UV-B treatment. The level of stress marker proline increased considerably as a result of NaCl treatment, while UV-B irradiation resulted in a pronounced increase of the level of H2O2. MDA enhanced in the seedlings subjected to salt and UV-B stress. Established cross-acclimation to UV-B as a result of salt treatment could be due to the increased free proline and the level of UV-B absorbing compounds in barley seedlings subjected to NaCl.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2008
• Tom: 30
• Numer: 4
• Opis fizyczny: p.561-567,fig.,ref.

Twórcy

autor

Cakirlar H.

• Department of Biology, Faculty of Science, Hacettepe University, 06800 Beytepe, Ankara, Turkey

autor

Cicek N.

• Department of Biology, Faculty of Science, Hacettepe University, 06800 Beytepe, Ankara, Turkey

autor

Fedina I.

• Academic Metodi Popov Institute of Plant Physiology, Bulgarian Academy of Sciences, Academic Georgi Bonchev Street, Building 21, 1113 Sofia, Bulgaria

autor

Georgieva K.

• Academic Metodi Popov Institute of Plant Physiology, Bulgarian Academy of Sciences, Academic Georgi Bonchev Street, Building 21, 1113 Sofia, Bulgaria

autor

Dogru A.

• Department of Biology, Faculty of Art and Sciences, Sakarya University, Esentepe Campus, 54187 Sakarya, Turkey

autor

Velitchkova M.

• Institute of Biophysics, Bulgarian Academy of Sciences, Academic Georgi Bonchev Street, Building 21, 1113 Sofia, Bulgaria

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