The Kinetic Effect of Pco2 on the Respiration Rate of Golden Delicious Apples

Andrich, Gianpaolo; Zinnai, Angela; Balzini, S.; Silvestri, S. De; Fiorentini, Roberto

doi:10.17660/actahortic.1994.368.46

Cited by 7 publications

(4 citation statements)

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“…A different approach involves modelling the CO 2 production due to fermentation. Beaudry et al (1993) and Andrich et al (1994) applied an exponential function to describe the fermentative CO 2 production. The fermentative CO 2 production has also been modelled based on enzyme kinetics (Banks et al, 1993;Peppelenbos et al, 1993;Peppelenbos et al, 1996;Hertog et al, 1998).…”

Section: Tolerance Of Different Crops To Ca Under Different Conditionsmentioning

confidence: 99%

Maintaining optimal atmosphere conditions for fruits and vegetables throughout the postharvest handling chain

Brecht

Chau

Fonseca

et al. 2003

Postharvest Biology and Technology

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Section: Tolerance Of Different Crops To Ca Under Different Conditionsmentioning

confidence: 99%

Maintaining optimal atmosphere conditions for fruits and vegetables throughout the postharvest handling chain

Brecht

Chau

Fonseca

et al. 2003

Postharvest Biology and Technology

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“…Thus, anaerobic respiration led to an increase in CO 2 production rates of fresh‐cut Flor de Invierno pears. Andrich and others (1994) used exponential functions to describe fermentative CO 2 production. However, Peppelenbos and others (1996) described CO 2 production as a result from both oxidative and fermentation processes simultaneously (), assuming O 2 as an inhibitor of fermentative CO 2 production.…”

Section: Resultsmentioning

confidence: 99%

Respiratory Rate and Quality Changes in Fresh‐Cut Pears as Affected by Superatmospheric Oxygen

Oms‐Oliu¹,

Soliva‐Fortuny²,

Martı́n-Belloso³

2007

Journal of Food Science

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Changes in the respiration rate of fresh-cut "Flor de Invierno" pears stored under superatmospheric oxygen concentrations were studied and compared to those observed under traditional modified atmosphere packaging conditions. Changes in package headspace O(2) and CO(2) concentrations throughout storage were curve-fitted to nonlinear equations, calculating respiration rates by combining the derivatives of the equations and the gas permeations throughout storage. Moreover, relationships between respiratory activity and quality parameters of fresh-cut Flor de Invierno pears dipped into an antioxidant solution (0.75% N-acetylcysteine and 0.75% glutathione) were assessed. CO(2) production of fresh-cut Flor de Invierno pears stored under 70 kPa O(2) atmospheres was successfully estimated with the proposed mathematical procedure. This method also proved to describe well CO(2) production rates of fresh-cut pears stored under initial 2.5 kPa O(2)+ 7 kPa CO(2) or 21 kPa O(2). In addition, a modification of Michaelis-Menten enzyme kinetics was adequate to describe the changes in estimated CO(2) production due to fermentative processes occurring under low oxygen concentrations. Superatmospheric O(2) concentrations seem to promote oxidative processes, which result into a dramatical modification of some quality attributes of fresh-cut pears.

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“…Drought is a major abiotic stress which greatly reduces the crop productivity (Reddy et al 2004) especially sunflower (Andrich et al 1996;Reddy et al 2003). There is great need to develop drought tolerant sunflower varieties which could express a greater yield potential during the severe stress conditions (Razzaq et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Comparative Genomics and Expression Analysis of KCS Genes Under Drought Stress in Sunflower (Helianthus Annuus L.)

2022

THE JAPS

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Water stress is considered as the main environmental factor which badly affects growth of sunflower plant. It is a water sensitive plant whose yield is greatly affected by drought stress. Several studies have been done to understand the mechanism of drought stress tolerance in plants, and exploring the role of stress tolerant genes is one of them. KCS genes, responsible for wax biosynthesis, have been reported to be involved in drought stress tolerance mechanism. In this study, expression profiling of KCS genes was done to understand their role in stress mechanism. Comparative genomics studies of KCS genes were carried out in sunflower and Arabidopsis by constructing phylogenetic tree. They were divided into six clades, however they were present in the same clade showing similarities between Arabidopsis and sunflower. It was further confirmed by Synteny analysis and concluded that KCS genes in both species share the same evolutionary origin. Further, they were amplified in sunflower by using gene specific primers. Five genes, i.e. KCS2, KCS4, KCS5, KCS10 and KCS18 were successfully amplified in sunflower variety FH-593. Then, sunflower plants were subjected to drought stress and expression profiling of amplified KCS genes was carried out by Real Time PCR. All the five genes were up-regulated under drought showing their role in stress conditions; however, the expression level of each gene was varied. Maximum relative expression was found for KCS4 gene in T1, i.e. 19 fold as compared to control. The expression of other genes was found in decreasing order as indicated KCS4>KCS2>KCS5>KCS10>KCS18 (relative expression: 19, 12, 5, 4 and 3 respectively). Biochemical analyses were also performed and significant variation was found among treatments and control. Total chlorophyll contents were decreased under drought stress while antioxidants like catalase, peroxidase, superoxide dismutase and proline were increased. Our results showed the role of KCS genes in drought stress which is first ever report in sunflower. This study concluded that KCS genes have role in drought stress tolerance and their expression is significantly up-regulated under stress conditions. The information presented here may help to further characterize KCS genes and their subsequent use to engineer drought stress in crop plants.

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The Kinetic Effect of Pco2 on the Respiration Rate of Golden Delicious Apples

Cited by 7 publications

References 0 publications

Maintaining optimal atmosphere conditions for fruits and vegetables throughout the postharvest handling chain

Maintaining optimal atmosphere conditions for fruits and vegetables throughout the postharvest handling chain

Respiratory Rate and Quality Changes in Fresh‐Cut Pears as Affected by Superatmospheric Oxygen

Comparative Genomics and Expression Analysis of KCS Genes Under Drought Stress in Sunflower (Helianthus Annuus L.)

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