Journal ArticleDOI
Influence of accelerated and natural aging on free radical levels in soybean seeds
P. Buchvarov,Ts. Gantcheff +1 more
TLDR
Results point to the physiological role of the embryonic axes during natural or accelerated aging of seeds, notwithstanding that the axis is a small part as compared to the cotyledonary material, and it is suggested that lipid peroxidation in embryonic axes may play an important role in the seed deterioration during aging.Abstract:
Embryonic axes and cotyledons of three soybean (Glycine max L. cv. Gudzon) seed lots designated as “normal”, “naturally aged” and “acceleratedly aged” were analyzed for their organic free radical contents. No signals of free radicals were found in ESR spectra from cotyledonary material of the three samples investigated. High levels of organic free radicals were observed in the embryonic axes. There were significant differences in the free radical contents of the embryonic axes: the relative values of free radicals were 100, 190 and 170% for samples aged normally, naturally and in an accelerated manner, respectively. These results point to the physiological role of the embryonic axes during natural or accelerated aging of seeds, notwithstanding that the axis is a small part as compared to the cotyledons. It is suggested that lipid peroxidation in embryonic axes may play an important role in the seed deterioration during aging.read more
Citations
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Journal ArticleDOI
The role of active oxygen in the response of plants to water deficit and desiccation.
TL;DR: During normally-encountered degrees of water deficit the capacity of the antioxidant systems and their ability to respond to increased active oxygen generation may be sufficient to prevent overt expression of damage.
Journal ArticleDOI
The role of free radicals in senescence and wounding.
TL;DR: Several lines of evidence suggest that degradation of lipids in senescing membranes and the ensuing release of free fatty acids initiate oxidative deterioration by providing substrate for lipoxygenase, and membranes are primary targets of free radical damage.
BookDOI
Stress and stress coping in cultivated plants
TL;DR: The overall implications of biological stress, which reflects the combination of water and drought stress, and environmental pollution stress, are studied.
Journal ArticleDOI
Changes in malondialdehyde content and in superoxide dismutase, catalase and glutathione reductase activities in sunflower seeds as related to deterioration during accelerated aging
TL;DR: The results obtained suggest that sunflower seed deterioration during accelerated aging is closely related to a decrease in the activities of detoxifying enzymes and to lipid peroxidation.
Journal ArticleDOI
ROS production and protein oxidation as a novel mechanism for seed dormancy alleviation.
Krystyna Oracz,Hayat El-Maarouf Bouteau,Jill M. Farrant,Keren Cooper,Maya Belghazi,Claudette Job,Dominique Job,F. Corbineau,Christophe Bailly +8 more
TL;DR: In this paper, the role of reactive oxygen species (ROS) in after-ripening of sunflower seeds was investigated at the cellular level by electron microscopy, concomitantly with lipid peroxidation and oxidation of specific embryo proteins.
References
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Journal ArticleDOI
Lipid peroxidation associated with accelerated aging of soybean axes.
Robert R. Stewart,J. D. Bewley +1 more
TL;DR: It is suggested that aging leads to peroxidative changes to lipids and that these could contribute to loss of viability in soybean seeds.
Journal Article
Accelerated aging techniques for predicting the relative storability of seed lots
James C. Delouche,C. C. Baskin +1 more
TL;DR: The major portion of the research on which this report is based was supported under Cooperative Agreement No. 12-14-100-9010 (51) between the MAFES and MQRD, ARS, USDA (1966-70).
Journal ArticleDOI
On the mechanism of aging in soybean seeds.
David J. Parrish,A C Leopold +1 more
TL;DR: Changes in seeds of soybeans which occur during accelerated aging showed subsequent loss of vigor, a decline in early respiratory activity, increased leakage of electrolytes, losses of as much as 10% dry weight from imbibing cotyledons, and a decrease in the swelling response of the imbibed system (seed plus H(2)O).
Journal ArticleDOI
Absence of Lipid Oxidation during Accelerated Aging of Soybean Seeds
TL;DR: When seeds of soybean were subjected to accelerated aging, the amount of total lipid which was extracted from the whole seed increased with "age," whereas the extractable phospholipid decreased slightly, suggesting that oxidation of seed lipids may be unrelated to the process of seed aging.
Journal ArticleDOI
Tocopherol and Organic Free Radical Levels in Soybean Seeds during Natural and Accelerated Aging.
TL;DR: Results indicate that it is improbable that lipid peroxidation need play a significant role during natural or accelerated aging in soybean seeds, and that tocopherol levels remained unchanged during both types of aging.
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Lipid peroxidation associated with accelerated aging of soybean axes.
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