Phenols, proline and low-molecular thiol levels in pea (Pisum sativum) plants respond differently toward prolonged exposure to ultraviolet-B and ultraviolet-C radiations

• Autorzy: Katerova Z. , Ivanov S. , Mapelli S. , Alexieva V.
• Języki publikacji: EN

Abstrakty

EN

Pea (Pisum sativum L.) seedlings were exposed to low, moderate, and high regimes of ultraviolet-B (UVB) (ld-B 4.4, md-B 13.3, and hd-B 26.5 kJ m⁻² day⁻¹), or ultraviolet-C (UV-C) (ld-C 0.1, md-C 0.3, and hd-C 0.6 kJ m⁻² day⁻¹) radiations. Concentrations of total phenols, free proline, and low-molecular thiol groups were determined in the last formed (young) and older leaves after irradiation for 7, 10 or 14 consecutive days. Shoot length and weight did not change markedly after 14 days of ld-B and ld-C, but reduced substantially after moderate and high regimes of both UV-B and UV-C. Proline decreased upon high doses of irradiation, while in ld-B treated plants, by contrast, an increase was observed. The reduction in total phenols and thiols was stronger after hd-B than after hd-C irradiations, although an induction was found in ld-B treated plants. In contrast to ld-B, ld-C regime led mainly to reductions or insignificant changes in proline, phenols, and thiols. Therefore, the stress-protection mechanisms are different between low UV-B and UV-C irradiation regimes in regard to proline, phenols, and thiols.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2009
• Tom: 31
• Numer: 1
• Opis fizyczny: p.111-117,fig.,ref.

Twórcy

autor

Katerova Z.

• Acad. M. Popov Institute of Plant Physiology, BAS, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria

autor

Ivanov S.

• Centre of Food Biology, PO Box 120, 1592 Sofia, Bulgaria

autor

Mapelli S.

• Institute of Agricultural Biology and Biotechnology, CNR, Via Bassini 15, 20133 Milan, Italy

autor

Alexieva V.

• Acad. M. Popov Institute of Plant Physiology, BAS, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria

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