Details

Autor(en) / Beteiligte

• Mirfattahi, Zahra
• Eshghi, Saeid

Titel

Acetic Acid Alleviates Salinity Damage and Improves Fruit Yield in Strawberry by Mediating Hormones and Antioxidant Activity

Ist Teil von

• Erwerbsobstbau, 2023-10, Vol.65 (5), p.1403-1412

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Salinity in soil and irrigation water is a common phenomenon potentially reducing strawberry growth and yield in greenhouse and field conditions. Acetic acid (AA) was reported to improve abiotic stress tolerance in some plants. Its role in the strawberry under salinity stress remains unexplored. A greenhouse hydroponic experiment was carried out. Strawberry ( Fragaria   ×   ananassa Duch. cv. Paros) plants were potted in 3 kg plastic pots filled with a mixture of cocopeat/perlite (1:1 v/v). In the current study the influence of AA (1 and 2 mM) supplementation under salinity (40 mM NaCl) on plant growth, yield and hormone contents was evaluated. Salinity decreased plant biomass production compared to the control. Application of AA (2 mM) tended to increase (2%) leaf fresh weight, superoxide dismutase (SOD), and catalase (CAT) enzyme activity compared to control under salinity. Salinity also decreased fruit yield by 66%, was considerably reverted by AA treatment and this reduction reached 49% in 40 mM NaCl +1 mM acetic acid (AAS) treatment. Exogenous AA (1 mM) treated plants suffered less decrease plant biomass due to the enhancement of endogenous hormonal content in strawberry plants. Concentrations of abscisic acid (ABA), gibberellin (GA), salicylic acid (SA) and cytokinin (CK) were determined using HPLC mass spectrometry. ABA was found to be 70% increased in non-treated plants under saline condition, but this increase was 21% in AAS treatment. Under saline condition, CK content was affected by AA and increased in both AAS and in 40 mM NaCl +2 mM AA (AaS) treatments. During salinity stress condition, GA contents was increased in both AAS and AaS treatments compared to salinity stress alone. SA contents increased in AaS treatment, confirming its role in salinity tolerance. Collectively, our study suggested that exogenous AA could accelerate salinity resistance by enhancing some antioxidant enzyme activity and hormonal contents in strawberry plants.