UV-B induced stress responses in three rice cultivars

I. Fedina, J. Hidema, M. Velitchkova, K. Georgieva, D. Nedeva

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


UV-B responses of three rice (Oryza sativa L.) cultivars (Sasanishiki, Norin 1 and Surjamkhi) with different photolyase activity were investigated. Carbon dioxide assimilation data support that Sasanishiki was less sensitive to UV-B than Norin 1 and Surjamkhi. UV-B radiation sharply decreased the content of Rubisco protein in Surjamkhi and has no effect in Sasanishiki. The photochemical activities of photosystem (PS) 1 and PS 2 was slightly affected by UV-B treatment. The content of H2O2 and the activities of antioxidant enzymes, catalase (CAT), peroxides (POX) and superoxide dismutase (SOD) were enhanced after UV-B treatment. The activities of CAT and POX isoenzymes in Sasanishiki were more enhanced by UV-B radiation than those in Norin 1 and Surjamkhi.

Original languageEnglish
Pages (from-to)571-574
Number of pages4
JournalBiologia Plantarum
Issue number3
Publication statusPublished - 2010
Externally publishedYes


  • CO fixation
  • Catalase
  • Hydrogen peroxide
  • Peroxidase
  • Rubisco
  • Superoxide dismutase

ASJC Scopus subject areas

  • Plant Science
  • Horticulture


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