Tough Sprouting – Impact of Cadmium on Physiological State and Germination Rate of Soybean Seeds

Jagna Chmielowska-Bąk, Renata Holubek, Marina Frontasyeva, Inga Zinicovscaia, Selin İşidoğru, Joanna Deckert

Abstract


Seed germination is the earliest process in plant development and is crucial for further plant growth and fitness. The process is regulated by various internal and external factors, including soil pollutants such as nonessential metals. In the present study, we examined in detail the impact of short-term imbibition in Cd solutions at several concentrations (5, 10, and 25 mg/L) on germination rate and physiological state of soybean seeds. The results showed that although Cd was readily absorbed by the seeds, the metal had no effect on seeds cell viability, oxidative stress intensity, or germination percentage. In contrast, imbibition in Cd solution led to slight reduction in antioxidant capacity of seeds. Seedlings grown from seeds pretreated with metal showed no differences in growth in relation to the control. Taken together, the results indicate that soybean seeds are relatively tolerant even to high Cd concentration (up to 25 mg/L).

Keywords


metal stress; antioxidants; cell viability; lipid peroxidation

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References


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