Relationships between ultrastructure of embryo cells and biochemical variations during ageing of oat (Avena sativa L.) seeds with different moisture content

Xia, Fangshan; Chen, Lingling; Sun, Yan; Mao, Peisheng

doi:10.1007/s11738-015-1825-8

Cited by 33 publications

(33 citation statements)

References 35 publications

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“…The level of seed vigor was indicated by the seeds' germination percentage after the aging treatment. The germination percentage of oat seeds with a 4% moisture content reduced from 88% to 80% after 40 d, those with 10% moisture content reduced from 89% to 0% after 40 d, while those with 16% moisture content reduced from 82% to 0% after 8 d. Detailed analyses were performed as previously described (Xia et al, 2015).…”

Section: Seed Aging Treatmentsmentioning

confidence: 99%

Mitochondrial structural and antioxidant system responses to aging in oat (Avena sativa L.) seeds with different moisture contents

Xia

Wang

et al. 2015

Plant Physiology and Biochemistry

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Section: Seed Aging Treatmentsmentioning

confidence: 99%

Mitochondrial structural and antioxidant system responses to aging in oat (Avena sativa L.) seeds with different moisture contents

Xia

Wang

et al. 2015

Plant Physiology and Biochemistry

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“…In the ASC-GSH cycle, ascorbate peroxidase (APX) reduces the toxicity of ROS by using ASC as substrate; ASC is then recycled in the matrix by NADH-dependent monodehydroascorbate reductase (MDHAR) or GSH-dependent dehydroascorbate reductase (DHAR), while GSH can be recycled in the matrix by glutathione reductase (GR) using NADPH as an electron donor [12,13]. A decline in cellular ASC indicates failing antioxidant capacity during seed aging, hence contributing to a loss of seed viability [14][15][16]. Similarly, cellular GSH also declines rapidly, with a concomitant rapid decrease in seed vigor, during aging [4,17,18].…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, cellular GSH also declines rapidly, with a concomitant rapid decrease in seed vigor, during aging [4,17,18]. At the cellular level, seed aging also reduces the activities of several enzymes involved in the ASC-GSH cycle [16,19]. Therefore, maintaining high levels of ASC and GSH is important to guarantee vigor in aged seeds.…”

Section: Introductionmentioning

confidence: 99%

Influence of exogenous ascorbic acid and glutathione priming on mitochondrial structural and functional systems to alleviate aging damage in oat seeds

et al. 2020

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Background: Loss of vigor caused by seed aging adversely affects agricultural production under natural conditions. However, priming is an economical and effective method for improving the vigor of aged seeds. The objective of this study was to test the effectiveness of exogenous ascorbic acid (ASC) and glutathione (GSH) priming in the repairing of aged oat (Avena sativa) seeds, and to test the hypothesis that structural and functional systems in mitochondria were involved in this process. Results: Oat seeds were artificially aged for 20 days at 45°C, and were primed with solutions (1 mmol L − 1 ) of ASC, GSH, or ASC + GSH at 20°C for 0.5 h before or after their aging. Seed germination, antioxidant enzymes in the ASC-GSH cycle, cytochrome c oxidase (COX) and mitochondrial malate dehydrogenase (MDH) activities, and the mitochondrial ultrastructures of the embryonic root cells were markedly improved in aged oat seeds through post-priming with ASC, GSH, or ASC + GSH, while their malondialdehyde and H 2 O 2 contents decreased significantly (P < 0.05). Conclusion: Our results suggested that priming with ASC, GSH, or ASC + GSH after aging could effectively alleviate aging damage in oat seeds, and that the role of ASC was more effective than GSH, but positive effects of post-priming with ASC and GSH were not superior to post-priming with ASC in repairing aging damage of aged oat seeds. However, pre-priming with ASC, GSH, or ASC + GSH was not effective in oat seeds, suggesting that pre-priming with ASC, GSH, or ASC + GSH could not inhibit the occurrence of aging damage in oat seeds.

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“…Generally, dried seeds can be stored for a relatively long period of time, but eventually, the deterioration or ageing of seeds can occur irreversibly 4 . Furthermore, both the prestorage conditions (i.e., temperature and seed moisture content) and genotypic effects play essential roles in affecting the longevity characteristics of seeds 5 . Compared with other pasture plants or crop seeds, the seeds of grasses such as tall fescue ( Festuca arundinacea Schreb.)…”

mentioning

confidence: 99%

Effects of ultrasonication on increased germination and improved seedling growth of aged grass seeds of tall fescue and Russian wildrye

Liu

Wang

Karagić

et al. 2016

Sci Rep

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The effects of ultrasonic treatments on the germination and seedling growth of aged tall fescue (Festuca arundinacea) and Russian wild rye (Psathyrostaehys juncea Nevski) seeds were determined using orthogonal matrix experimental design with four ultrasonic factors. The multivariate analysis of variance detected significant differences and coupling effects of the pair-wise factors. The activities of Superoxide Dismutase (SOD) and Peroxidase (POD) and the Malondialdehyde (MDA) content were affected. The ultrasonic treatments had positive effects on the germination percentage (GP) of the aged seeds and the growth of the seedlings (GS) and therefore we provided a basic evidence for the application of ultrasonic treatment to pretreat aged grass seeds. For the four ultrasonic factors, the optimal conditions were a sonication time of 36.7 min, a sonication temperature of 35 °C, an output power of 367 W and a seed soaking time 4.1 h after binary quadratic regressions analyses. The ultrasonic treatment has the potential to improve seedling growth. Moreover, the longevity of the tall fescue and the Russian wild rye seeds was approximately 9.5 and 11.5 years, respectively, under natural conditions of storage. The physiological mechanisms that might contribute to the improved GP and GS were discussed.

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Relationships between ultrastructure of embryo cells and biochemical variations during ageing of oat (Avena sativa L.) seeds with different moisture content

Cited by 33 publications

References 35 publications

Mitochondrial structural and antioxidant system responses to aging in oat (Avena sativa L.) seeds with different moisture contents

Mitochondrial structural and antioxidant system responses to aging in oat (Avena sativa L.) seeds with different moisture contents

Influence of exogenous ascorbic acid and glutathione priming on mitochondrial structural and functional systems to alleviate aging damage in oat seeds

Effects of ultrasonication on increased germination and improved seedling growth of aged grass seeds of tall fescue and Russian wildrye

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