Physiological and biochemicals changes modulated by seeds’ priming of lentil (Lens culinaris L.) under salt stress at germination stage

• Autorzy: Bouallegue A. , Souissi F. , Nouairi I. , Souibgui M. , Abbes Z. , Mhadhbi H.
• Języki publikacji: EN

Abstrakty

EN

Seed priming is one of the potential physiological approaches to enhance the seed germination under the salinity stress. The present study examined the role of two seed priming molecules: salicylic acid (SA) and hydrogen peroxide (H2O2), in enhancing the salt tolerance of lentil seeds at germination stage. Salinity stress caused significant decrease in germination percentage and primary root elongation. This decrease was associated with significant increase in lipid peroxidation and total lipid (TL) contents in embryonic axis. The catalase (CAT), guaiacol peroxydase (GPOX) and superoxide dismutase (SOD) activities remained unchanged or decreased significantly under the influence of salt stress, in both embryonic axis and cotyledons. Starch mobilization was not affected by the salt stress. The two priming treatments effectively alleviated the negative effects of salinity stress. SA and H2O2 applications after dose optimization resulted in a significant enhancement of germination percentage and primary root elongation. No significant changes in starch, soluble sugars contents and SOD activity were detected following SA and H2O2 treatments. Seed priming treatments triggered the activities of GPOX and CAT and caused the reduction in lipid peroxidation, especially in embryonic axis. TL content and especially the fatty acid C18:3 increased after SA applications. Better performance under salt stress of primed lentil seeds was associated with lower lipid peroxidation, and activation of enzymatic antioxidative defense system. Obtained results confirm the potential for using SA and H2O2 to improve germination and plant growth under salt stress conditions.

Słowa kluczowe

EN

plant cultivation; lentil; Lens culinaris; seed priming; physiological change; biochemical change; antioxidant enzyme; germination; salinity; salt stress

• Wydawca: -
• Czasopismo: Acta Scientiarum Polonorum. Hortorum Cultus
• Rocznik: 2019
• Tom: 18
• Numer: 5
• Opis fizyczny: p.27-38,fig.,ref.

Twórcy

autor

Bouallegue A.

• Laboratoire des Légumineuses, Centre de Biotechnologie de Borj Cedria (CBBC), PB 901, 2050, Hammam Lif, Tunisie

autor

Souissi F.

• Laboratoire des Légumineuses, Centre de Biotechnologie de Borj Cedria (CBBC), PB 901, 2050, Hammam Lif, Tunisie

autor

Nouairi I.

• Laboratoire des Légumineuses, Centre de Biotechnologie de Borj Cedria (CBBC), PB 901, 2050, Hammam Lif, Tunisie

autor

Souibgui M.

• Laboratoire des Légumineuses, Centre de Biotechnologie de Borj Cedria (CBBC), PB 901, 2050, Hammam Lif, Tunisie

autor

Abbes Z.

• Laboratoire des Grandes Cultures, Institut National de la Recherche Agronomique de Tunisie (INRAT), Universite de Carthage, Rue Hédi Karray, 2080 Ariana, Tunisie

autor

Mhadhbi H.

• Laboratoire des Légumineuses, Centre de Biotechnologie de Borj Cedria (CBBC), PB 901, 2050, Hammam Lif, Tunisie

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Identyfikatory

DOI

10.24326/asphc.2019.5.3