Changes in ATP, ADP and pyridine nucleotide levels related to the incidence of physiological disorders in ‘Conference’ pears and ‘Jonagold’ apples during controlled atmosphere storage

BackgroundUltra-weak photon emission (UPE), or biophoton emission, is a phenomenon observed in various living organisms, including plants. In this study, we analyzed the UPE from ripening strawberry fruits, to elucidate its source and association with cellular energy.MethodsFreshly harvested and stored strawberry fruits were measured for levels of UPE and energy molecules adenosine triphosphate (ATP), adenosine monophosphate (AMP) and adenosine diphosphate (ADP). The associations between them were calculated.ResultsIn ripening fruit, a decrease in UPE positively correlated with declining levels of ATP, AMP, and energy charge. In harvested fruits, levels of UPE, ATP, and energy charge declined, but ADP and AMP increased.ConclusionChanges in UPE levels synchronized with changes in ATP and energy charge, which reflect cellular energy levels. Thus, cellular energy may be related to UPE, and may be an energy source for UPE.

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“…Thus, it appears likely that ATP is the energy source for UPE. This is consistent with earlier observations [11,18].…”

Section: Discussionsupporting

confidence: 94%

Ultraweak photon emission in strawberry fruit during ripening and aging is related to energy level

et al. 2017

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“…The CA-conditions were: 0.5 kPa O 2 + 6.0 kPa CO 2 ; 3 kPa O 2 + 6 kPa CO 2 ; 1 kPa O 2 + 3 kPa CO 2 ; 1.5 kPa O 2 + 1.5 kPa CO 2 ; 0.5 kPa O 2 + 0.5 kPa CO 2 and 2 kPa O 2 + 1 kPa CO 2 as described by Saquet et al (2000).…”

Section: Methodsmentioning

confidence: 99%

“…CA set points for long-term fruit storage should be better studied, mainly for 'Conference' pear, which is very sensitive to low O 2 and/or high CO 2 partial pressures (Saquet et al 2000;Saquet et al 2003;Pedreschi et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Respiration rate and ethylene metabolism of ‘Jonagold’ apple and ‘Conference’ pear under regular air and controlled atmosphere

Saquet

Streif

2017

Bragantia

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“…This is consistent with previous research that showed cv. Jonagold to be resistant to the development of internal browning during storage (Saquet et al 2000). Braeburn cv., on the other hand, developed browning during storage with higher incidence in 2011 than in 2010 (Fig.…”

Section: Cultivar Effectmentioning

confidence: 99%

Effects of pre- and postharvest factors on browning in Braeburn

Hatoum¹,

Buts²,

Hertog

et al. 2014

Hortic. Sci.

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The effects of several pre-and postharvest factors on apple cv. Braeburn browning disorder (BBD) incidence using a nine-factor experimental design has been investigated. The design allowed the determination of the effects of single factors as well as their interaction with growing season and storage time. BBD increased in severity with storage duration. BBD incidence was reduced with calcium and potassium fertilizers application, while it was increased when triazoles were used. Delayed controlled atmosphere (DCA) application resulted in less BBD in storage, while treatment with 1-methylcyclopropene (1-MCP) increased BBD incidence. More BBD was observed in fruit stored at above optimal CO 2 levels. BBD incidence was increased when O 2 concentration in CA was increased from 1 kPa to 3 kPa (optimum CA) or 6 kPa. Finally, the various factors showed a different effect for different growing seasons and storage time. These findings suggest a possible mechanism for the development of BBD. Further work should focus on extending the experimental design to include the interactions between the different pre-and postharvest factors.Keywords: Braeburn browning disorder; fertilizers; triazoles; controlled atmosphere; 1-methylcyclopropene Malus domestica Borkh., cv. Braeburn is a popular apple cultivar worldwide. To facilitate year-round availability of fruit, apples are stored at low temperature under controlled atmosphere (CA) conditions. Under the commercial storage conditions, apples can be stored well as a result of their reduced metabolic rate. The storability of cv. Braeburn is, however, limited by the development of internal browning (Elgar et al. 1999). Affected fruit show patches of brown tissue which can result in cavity formation (Elgar et al. 1998). The combination of brown flesh and off flavours makes brown apples unacceptable in the market, resulting in economic losses.Different apple varieties vary in their susceptibility to browning (Streif 2008). Cv. Braeburn has a high skin resistance (Rajapakse et al. 1990) turning the skin into a stronger diffusion barrier as compared to some other apple cultivars. Together with a dense cellular organization this results in relative high internal CO 2 concentration (Herremans et

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Changes in ATP, ADP and pyridine nucleotide levels related to the incidence of physiological disorders in ‘Conference’ pears and ‘Jonagold’ apples during controlled atmosphere storage

Cited by 125 publications

References 22 publications

Ultraweak photon emission in strawberry fruit during ripening and aging is related to energy level

Ultraweak photon emission in strawberry fruit during ripening and aging is related to energy level

Respiration rate and ethylene metabolism of ‘Jonagold’ apple and ‘Conference’ pear under regular air and controlled atmosphere

Effects of pre- and postharvest factors on browning in Braeburn

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