The mitigation effects of exogenous hydrogen peroxide when alleviating seed germination and seedling growth inhibition on salinity-induced stress in barley

• Autorzy: Kilic S. , Kahraman A.
• Języki publikacji: EN

Abstrakty

EN

Our study focused on the mitigation role of exogenously applied hydrogen peroxide (H₂O₂) in eliminating toxicty caused by salt (NaCl). Barley seeds were pretreated with 30 μM (micromolal) H₂O₂ for 24 hours and then exposed to increasing salt concentrations (0.0, 0.25, 0.275, 0.30 M). Morphogical and physiological changes in seed germination and seedling growth stages were compared between different treatments of salt in laboratory conditions. Adverse effects of salt during both germination and seedling growth stages were dependent on the concentration of the salt treatment. We found that the application of H₂O₂ effectively alleviated the salt-induced inhibition, and reduced the negative effects of salt on germination (germination index and vigor index), seedling growth stages (radicle and coleoptile lengths, fresh weight), and leaf parameters (stomata and epidermis counts, stomatal index, stomata sizes of adaxial and abaxial surfaces). The differences were statistically significant. Alleviating the effects of H₂O₂ increased in parallel with salt concentration (p≤0.05). However, under non-stress conditions (control), H₂O₂ didn’t have any effect on the investigated parameters (p≥0.05). Our results suggest that exogenous H₂O₂ application is involved in the resistance of barley to salt stress.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2016
• Tom: 25
• Numer: 3
• Opis fizyczny: p.1053-1059,fig.,ref.

Twórcy

autor

Kilic S.

• Department of Biology, Faculty of Arts and Science, Suleyman Demirel University, 32260, Isparta, Turkey

autor

Kahraman A.

• Department of Biology, Faculty of Arts and Science, Suleyman Demirel University, 32260, Isparta, Turkey

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Identyfikatory

DOI

10.15244/pjoes/61852