Dormancy and sprouting in onion (<i>Allium cepa</i> L.) bulbs. I. Changes in carbohydrate metabolism

Yasin, Hussien J.; Bufler, G.

doi:10.1080/14620316.2007.11512203

Cited by 28 publications

(21 citation statements)

References 23 publications

(38 reference statements)

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“…The present results for distribution of sucrose in scale are coinciding with report of (Ogata 1961;Slimestad and Vågen 2009) in which they observed the high content of sucrose in inner scales. However, no change in sucrose content during 16 month storage was reported by (Yasin and Bufler 2007). In the present study, the variation in sucrose content is characterized by the alternate increase or decrease in its concentration, which is not correlated with the trends of glucose and fructose.…”

Section: Sugars Contentmentioning

confidence: 57%

“…During the dormancy, which supposedly started near harvest and varies from several weeks to months depends on the various cultivars (Miedema 1994;Yasin and Bufler 2007), many physiological processes are slowed down, although not ceased (Pak et al 1995;Carter et al 1999;Yasin and Bufler 2007;Brewster 2008). After the dormancy breaking, onion bulbs enter the regrowth phase that is accompanied by gradually increasing metabolic activity.…”

Section: Resultsmentioning

confidence: 99%

“…For comparison, 20 % of bulbs of the next most storable cultivars 'Magic Gold' and 'New Turbo' sprouted for the same period of time (Nam et al 2011). Onset of sprouting is commonly preferred to characterize the storage life of onions because of its clear relationship to physiological processes in bulbs (Pak et al 1995;Chope et al 2007a;Yasin and Bufler 2007;Bufler 2009). In the present work, the development of inner sprouts was observed on longitudinally cut bulbs after 2 months of storage and visible sprouts appeared after 5 months in a good agreement with the above mentioned results of Nam et al (2011).…”

Section: Resultsmentioning

confidence: 99%

“…Fructans may be translocated to the sink tissues directly through the phloem, or be hydrolyzed first, then transported and resynthesized (Benkeblia et al 2005;Yasin and Bufler 2007). Reallocation and conversion of fructans accompanied by the production and consumption of sucrose, fructose, and glucose (a by-product of fructan synthesis (Vijn et al 1998)) in combination with own metabolic transformations of mono-and disaccharides involved in respiration, osmotic regulation and other processes result in different time-dependent profiles of sugars in different parts of the bulb (Rutherford and Whittle 1982;Salamal et al 1990;Pak et al 1995;Hansen 1999;Yasin and Bufler 2007). There are conflicting reports on the fate of sucrose and the monocarbohydrates in the whole bulbs during storage, as follows from a comprehensive summary compiled by Chope et al (2007b).…”

Section: Sugars Contentmentioning

confidence: 99%

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Quantitative analysis of flavonoids, sugars, phenylalanine and tryptophan in onion scales during storage under ambient conditions

Sharma

Lee

et al. 2013

J Food Sci Technol

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A comprehensive quantitative analysis of flavonoids, sugars, phenylalanine, and tryptophan have been carried out in different onion scales during storage at ambient temperature (20-23°C) and relative humidity (60-80 %). Depending on the length of storage, dry matter content and composition shows variation inside the onion bulbs. Inner sprouts were observed on longitudinally cut bulbs after 2 months and visible sprouts appeared after 5 months of storage. The bulbs lost 20 to 30 % of their weight at the end of the storage. Higher dry matter content was observed in the inner scales. Significantly high content of quercetin in inner scales and high level of quercetin-3,4′-O -diglucoside and quercetin-4′-O-monoglucoside in outer scales was observed during a 7 months storage. During storage period, high content of fructose and glucose was observed in the middle scales while sucrose was high in the inner scales. There was no particular trend observed within analyzed amino acids. However, the content of phenylalanine was higher than tryptophan.

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Section: Sugars Contentmentioning

confidence: 57%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Sugars Contentmentioning

confidence: 99%

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Quantitative analysis of flavonoids, sugars, phenylalanine and tryptophan in onion scales during storage under ambient conditions

Sharma

Lee

et al. 2013

J Food Sci Technol

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“…Differences in ethylene and 1-MCP concentration, treatment duration, timing, and temperature may result in differential gene expression, since physiological and biochemical responses differ depending on these parameters (Blankenship and Dole, 2003;Watkins, 2006;Bufler, 2009). In addition, it is worth noting that given the differences in dormancy between various onion cultivars, it is difficult to make broad predictions of ethylene responses in onions (Yasin and Bufler, 2007).…”

Section: -Mcp May Not Bind All Ethylene Receptorsmentioning

confidence: 99%

Ethylene and 1-Methylcyclopropene Differentially Regulate Gene Expression during Onion Sprout Suppression

et al. 2011

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Onion (Allium cepa) is regarded as a nonclimacteric vegetable. In onions, however, ethylene can suppress sprouting while the ethylene-binding inhibitor 1-methylcyclopropene (1-MCP) can also suppress sprout growth; yet, it is unknown how ethylene and 1-MCP elicit the same response. In this study, onions were treated with 10 mL L 21 ethylene or 1 mL L 21 1-MCP individually or in combination for 24 h at 20°C before or after curing (6 weeks) at 20°C or 28°C and then stored at 1°C. Following curing, a subset of these same onions was stored separately under continuous air or ethylene (10 mL L 21 ) at 1°C. Onions treated with ethylene and 1-MCP in combination after curing for 24 h had reduced sprout growth as compared with the control 25 weeks after harvest. Sprout growth following storage beyond 25 weeks was only reduced through continuous ethylene treatment. This observation was supported by a higher proportion of down-regulated genes characterized as being involved in photosynthesis, measured using a newly developed onion microarray. Physiological and biochemical data suggested that ethylene was being perceived in the presence of 1-MCP, since sprout growth was reduced in onions treated with 1-MCP and ethylene applied in combination but not when applied individually. A cluster of probes representing transcripts up-regulated by 1-MCP alone but down-regulated by ethylene alone or in the presence of 1-MCP support this suggestion. Ethylene and 1-MCP both down-regulated a probe tentatively annotated as an ethylene receptor as well as ethylene-insensitive 3, suggesting that both treatments down-regulate the perception and signaling events of ethylene.

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Shallot (Allium cepa L. Aggregatum Group) Breeding

Rabinowitch

2021

Advances in Plant Breeding Strategies: Vegetable Crops

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Dormancy and sprouting in onion (Allium cepa L.) bulbs. I. Changes in carbohydrate metabolism

Cited by 28 publications

References 23 publications

Quantitative analysis of flavonoids, sugars, phenylalanine and tryptophan in onion scales during storage under ambient conditions

Quantitative analysis of flavonoids, sugars, phenylalanine and tryptophan in onion scales during storage under ambient conditions

Ethylene and 1-Methylcyclopropene Differentially Regulate Gene Expression during Onion Sprout Suppression

Shallot (Allium cepa L. Aggregatum Group) Breeding

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