Chromotoxic effects of exogenous hydrogen peroxide (H2O2) in barley seeds exposed to salt stress

• Autorzy: Cesur A. , Tabur S.
• Języki publikacji: EN

Abstrakty

EN

The effect of exogenous hydrogen peroxide (H₂O₂) on mitotic activity and chromosomal aberrations in root tip meristems of barley (Hordeum vulgare L. var. Tokak 157/37) germinated under salinity was analyzed. The inhibitory effect of salinity on mitotic index and the frequency of chromosomal aberrations increased with increasing salt concentration (0.00 control, 0.35, 0.40, 0.45 M, molal NaCl). The frequency of chromosomal aberrations of seeds germinated in medium with 0.40 M NaCl after pretreatment with H₂O₂ (30 µM, micromolal) was significantly higher than the control group. The highest concentration of NaCl (0.45 M) together with H₂O₂ caused total inhibition of germination. In this study, the intention was to determine the performance of H₂O₂ in alleviating detrimental effect of salt stress on mitotic activity and chromosomal aberrations. However, H₂O₂ did not reduce the detrimental effect of NaCl on these parameters. Also, it caused higher chromotoxic effect compared to those of control groups.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2011
• Tom: 33
• Numer: 3
• Opis fizyczny: p.705-709,fig.,ref.

Twórcy

autor

Cesur A.

• Department of Biology, Arts and Sciences Faculty, Suleyman Demirel University, 32100 Isparta, Turkey

autor

Tabur S.

• Department of Biology, Arts and Sciences Faculty, Suleyman Demirel University, 32100 Isparta, Turkey

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