Effect of irradiation on the carbohydrate metabolism responsible for sucrose accumulation in potatoes

Hayashi, Toru; Aoki, Shohei

doi:10.1021/jf00061a004

Cited by 26 publications

(15 citation statements)

References 11 publications

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“…This fact can be associated to the breakage of polysaccharide content of the mangoes by irradiation. Hayashi and Kawashima (1985) studied the effect of ionizing radiation in potatoes tubers at 2.0 kGy and concluded that gamma irradiation brings about various physiological changes that together contribute to the accumulation of sucrose in irradiated potatoes. Doses and storage period had no significant influence (p > .05) on total soluble solids content at days 8 and 10.…”

Section: Physico Chemical Analysismentioning

confidence: 99%

Study of physical–chemical and sensorial properties of irradiated Tommy Atkins mangoes (Mangifera indica L.) in an international consignment

Sabato¹,

Silva²,

Cruz³

et al. 2009

Food Control

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Section: Physico Chemical Analysismentioning

confidence: 99%

Study of physical–chemical and sensorial properties of irradiated Tommy Atkins mangoes (Mangifera indica L.) in an international consignment

Sabato¹,

Silva²,

Cruz³

et al. 2009

Food Control

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“…Understanding genetic variation according to radiation dose rates is essential not only for mutational characterization but also for the wider application of mutational techniques in plant research. The physiological changes induced by ionizing irradiation include cell wall damage, the production of free radicals, the rapid growth of root cells, and sucrose and anthocyanin accumulation (Nagata et al 2003;Nagata et al 2004;Hayashi and Aoki 1985). However, accurate information is still scarce regarding gene expression and signaling pathway responses to ionizing irradiation.…”

Section: Introductionmentioning

confidence: 99%

Physiological changes and anti-oxidative responses of Arabidopsis plants after acute and chronic γ-irradiation

Goh

Kim

et al. 2014

Radiat Environ Biophys

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To identify the effects of acute and chronic γ-irradiation in Arabidopsis plants, physiological responses and antioxidant-related gene expression were investigated. Seedlings were exposed to 200 Gy of γ-irradiation in acute manner for 1 or 24 h (A1 and A24) or in chronic manner for 1, 2, or 3 weeks (C1 W, C2 W, and C3 W). Plant height, silique number, and silique length in A1 and A24 irradiated plants were significantly reduced when compared to non-irradiated plants. Silique number decreased in response to both acute and chronic irradiation, except with the C3 W treatment, and the number of trichomes dramatically increased in A1 and C1 W. Electron spin resonance signal intensities increased in A1 and in all chronically irradiated plants, but decreased in the A24-treated plant. To investigate the effects of acute and chronic γ-irradiation on antioxidant enzymes, we examined activity of four antioxidant enzymes: catalase (CAT), peroxidase (POD), ascorbate peroxidase, and superoxide dismutase. In general, POD and CAT activities decreased in response to acute and chronic γ-irradiation. Oligonucleotide microarrays were used to investigate transcriptional changes after irradiation. Several genes related to reactive oxygen species signaling were up-regulated after acute and chronic exposure, including genes encoding heat shock factors, zinc finger proteins, NADPH oxidase, WRKY DNA-binding proteins, and calcium binding proteins. Taken together, our data indicate that the responses and activation of antioxidant systems prompted by irradiation exposure are dependent upon the γ-ray dose rate.

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“…These effects are considered a consequence of both the direct interactions between the ionizing radiation and the macromolecular structures, and the indirect action of AOS generated by water radiolysis. Those direct and indirect action of ionizing irradiation also induce other physiological changes in plants, *Corresponding author; fax +82-42-860-4608 e-mail hyunsook@mail.kribb.re.kr such as enhanced respiration and increased ethylene production (Romani, 1984), induction of enzyme activities (particularly for phenolic metabolisms; Pendharkar and Nair, 1975), and the accumulation of sucrose (Hayashi and Aoki, 1985) and specific protein species, such as small heat-shock proteins (Ferullo et al, 1994). However, the effects of gamma irradiation on transcriptional regulation of various types of genes have not been fully investigated.…”

mentioning

confidence: 99%

Expression patterns of diverse genes in response to gamma irradiation inNicotiana tabacum

2000

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We investigated the expression patterns of diverse genes at various time points after gamma irradiation of young tobacco plants. The first group of genes showed stimulation of transcript levels upon gamma irradiation, although their induction patterns varied. This group included glutathione-S-transferase, peroxidase, superoxide dismutase, and catalase. A second group, with post-irradiation reduction of transcripts, included genes encoding cytosolic ascorbate peroxidase, stromal ascorbate peroxidase, and a TMK1 receptor-like kinase. The third group of genes either showed no change in transcript levels or exhibited irregular patterns. These included genes encoding PRla (pathogenesisrelated protein), tobacco Ca++-dependent protein kinase, the ~-subunit of translational initiation factor 2B, and CHRK1, a chitinase-related receptor-like kinase. Thus, various genes displayed differential patterns of gene expression in response to gamma irradiation in tobacco plants, thereby suggesting a complex signaling mechanism is involved in the irradiation-induced defense by plants. In addition, many stress-responsive genes exhibited gene expression pattems upon gamma irradiation that differed from those resulting from other biotic and abiotic stresses. With the knowledge of distinctive expression patterns of diverse genes, irradiation-indicating marker plants could be developed by engineering and monitoring multiple radiation-responsive genes.

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Effect of irradiation on the carbohydrate metabolism responsible for sucrose accumulation in potatoes

Cited by 26 publications

References 11 publications

Study of physical–chemical and sensorial properties of irradiated Tommy Atkins mangoes (Mangifera indica L.) in an international consignment

Study of physical–chemical and sensorial properties of irradiated Tommy Atkins mangoes (Mangifera indica L.) in an international consignment

Physiological changes and anti-oxidative responses of Arabidopsis plants after acute and chronic γ-irradiation

Expression patterns of diverse genes in response to gamma irradiation inNicotiana tabacum

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