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Open Access Seed treatment with 5-azacytidine reduces ageing-induced damage in onion seeds

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This article is Open Access under the terms of the Creative Commons CC BY-NC licence.

The effect of treating aged onion seeds with 5-azacytidine (5-aza) on germination and vigour was evaluated. Seeds of two onion varieties, 'Bhima Raj' (BRJ) and 'Bhima Red' (BRD) were treated with 0, 10, 25 or 50 μg mL–1 5-azacytidine (a DNA demethylating agent). In comparison with the control treatment (0 μg mL–1 5-azacytidine), treatment with 5-azacytidine enhanced seed germination, seedling length, seedling dry weight and seed vigour indices. 5-azacytidine treatment also increased the activity of superoxide dismutase (SOD) and total antioxidant capacity (TAC). Seed treatment with 5-azacytidine has the potential to enhance the viability and vigour of aged onion seeds. This study provides phenotypic and biochemical data for further exploring the role of DNA methylation in understanding the process of seed ageing.
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Keywords: 5-AZACYTIDINE; ANTIOXIDANTS; DNA METHYLATION; REACTIVE OXYGEN SPECIES; SEED AGEING; VIGOUR

Document Type: Research Article

Publication date: December 1, 2020

This article was made available online on November 16, 2020 as a Fast Track article with title: "Seed treatment with 5-azacytidine reduces ageing-induced damage in onion seeds".

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  • Seed Science and Technology (SST) is one of the leading international journals featuring original papers and review articles on seed quality and physiology as related to seed production, harvest, processing, sampling, storage, distribution and testing. This widely recognised journal is designed to meet the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality.
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