Original scientific paper

https://doi.org/10.2478/botcro-2018-0003

Salicylic acid-induced germination, biochemical and developmental alterations in rye (Secale cereale L.)

Fatma Yanik ; Marmara University, Science and Arts Faculty, Biology Department, Göztepe Campus, 34722 İstanbul, Turkey
Özlem Aytürk ; Maltepe University, Fine and Arts Faculty, Gastronomy and Culinary Department, Marmara Eğitim Köyü, İstanbul, Turkey
Aslihan Çetinbaş-Genç ; Marmara University, Science and Arts Faculty, Biology Department, Göztepe Campus, 34722 İstanbul, Turkey
Filiz Vardar ; Marmara University, Science and Arts Faculty, Biology Department, Göztepe Campus, 34722 İstanbul, Turkey

Abstract

Salicylic acid (SA) is one of the endogenous plant growth regulators that modulate various metabolic and physiological events. To evaluate the exogenous SA-induced germination, biochemical and developmental alterations, different concentrations (10, 100, 500 and 1000 μM) of SA were applied to rye (Secale cereale L.) seeds in hydroponic culture conditions for 15 days. The observations revealed that seed germination and root elongation were stimulated in 10 μM SA treatment, however they were inhibited in higher concentrations (100 and 500 μM) of SA.
Furthermore, there was no germination in 1000 μM SA. The analysis of antioxidant enzymes revealed that although superoxide dismutase activity increased, catalase activity decreased in comparison to control. Besides, lipid peroxidation and peroxidase activity increased in 10 μM SA, whereas they decreased in higher concentrations. Similarly total
chlorophyll content increased in 10 μM SA, but it decreased in 100 and 500 μM SA treatments. Moreover anthocyanins and carotenoids increased after SA treatment. In conclusion, exogenous SA application causes developmental and biochemical alterations in rye.

Keywords

antioxidant enzyme; lipid peroxidation; photosynthetic pigments; salicylic acid

Hrčak ID:

198413

URI

https://hrcak.srce.hr/198413

Publication date:

1.4.2018.

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