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Alleviation of Antioxidant Enzyme Activity by an Hour 0.25mM Silver Thiosulphate Pulse Duration in Clarkia amoena

Alleviation of Antioxidant Enzyme Activity by an Hour 0.25mM Silver Thiosulphate Pulse Duration... An experiment was conducted on the excised buds of Clarkia amoena to assess the role of silver thiosulphate (STS) pulse duration on flower senescence and longevity. The flowers were harvested at one day before anthesis and immediately pulsed (1–4 h, respectively) with 0.25 mM STS. A separate set of flowers kept in distilled water designated the control. The excised buds treated with 0.25 mM STS for different durations resulted in improved flower longevity besides maintaining higher fresh mass and dry mass, water content and floral diameter except for the flowers pulsed for 4-h duration. However, a decreased level of lipid peroxidation and lipoxygenase activity was maintained in the flowers pulsed up to 3 h. STS 0.25 mM pulse treatment significantly increased activities of antioxidant enzymes (SOD, CAT and APX) but only up to 3-h duration; thereafter, a sharp decrease in antioxidant enzyme activity was registered. STS 0.25 mM pulse treatment for 1 h was found to be most effective in enhancing the flower longevity along with increased floral diameter. This treatment was able to maintain the decreased lipoxygenase activity by maintaining the higher membrane stability index by improving the activities of antioxidant enzymes and hence improved flower longevity by 3 days as compared to control. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Proceedings of the National Academy of Sciences, India Section B: Biological Sciences Springer Journals

Alleviation of Antioxidant Enzyme Activity by an Hour 0.25mM Silver Thiosulphate Pulse Duration in Clarkia amoena

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References (3)

  • K Shibuya (2008)

    816

    Plant Physiol, 149

  • AM Fischer (2012)

    124

    Crit Rev Plant Sci, 31

  • WG Doorn van (2008)

    453

    J Exp Bot, 59

Publisher
Springer Journals
Copyright
Copyright © The National Academy of Sciences, India 2019
ISSN
0369-8211
eISSN
2250-1746
DOI
10.1007/s40011-019-01079-9
Publisher site
See Article on Publisher Site

Abstract

An experiment was conducted on the excised buds of Clarkia amoena to assess the role of silver thiosulphate (STS) pulse duration on flower senescence and longevity. The flowers were harvested at one day before anthesis and immediately pulsed (1–4 h, respectively) with 0.25 mM STS. A separate set of flowers kept in distilled water designated the control. The excised buds treated with 0.25 mM STS for different durations resulted in improved flower longevity besides maintaining higher fresh mass and dry mass, water content and floral diameter except for the flowers pulsed for 4-h duration. However, a decreased level of lipid peroxidation and lipoxygenase activity was maintained in the flowers pulsed up to 3 h. STS 0.25 mM pulse treatment significantly increased activities of antioxidant enzymes (SOD, CAT and APX) but only up to 3-h duration; thereafter, a sharp decrease in antioxidant enzyme activity was registered. STS 0.25 mM pulse treatment for 1 h was found to be most effective in enhancing the flower longevity along with increased floral diameter. This treatment was able to maintain the decreased lipoxygenase activity by maintaining the higher membrane stability index by improving the activities of antioxidant enzymes and hence improved flower longevity by 3 days as compared to control.

Journal

Proceedings of the National Academy of Sciences, India Section B: Biological Sciences – Springer Journals

Published: Mar 11, 2020

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