Effect of calcium and calmodulin antagonists on ethylene biosynthesis in tomato fruits

Njoroge, CK; Kerbel, Eduardo L.; Briskin, Donald P.

doi:10.1002/(sici)1097-0010(199802)76:2<209::aid-jsfa936>3.0.co;2-j

Cited by 17 publications

(9 citation statements)

References 16 publications

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“…The decrease in ethylene level was attributed to Ca binding to calmodulin as a calcium-calmodulin complex, which is capable of altering the biological processes of the fruit. Another study showed that calmodulin is involved in the inhibition of ethylene biosynthesis due to the inactivation capability of the calcium-calmodulin complex in the ethylene biosynthesis pathway of tomato fruits [33]. Ethylene production was normally higher in green mature tomato fruits and the lower in higher doses of CaCl 2 initially and it was declined compared to the lower doses and control samples [11].…”

Section: Respiration Rate and Ethylene Productionmentioning

confidence: 99%

“…As a result, the fruits took more time to reach the climacteric peak, and the magnitude of the climacteric peak was lowered to a certain extent by CaCl 2 treatments [32]. The reasons for the delay of skin color development in calcium-treated tomato fruit may be the effects of CaCl 2 on the ethylene-producing cycle, which inhibits the synthesis of lycopene during ripening [33]. The direct application of CaCl 2 anticipated that calcium delayed the rate of ethylene emission by avoiding the solubilization of calciumbinding sites in fruit cell walls which stimulate the ethylene generating process in plasma membrane [34].…”

Section: Respiration Rate and Ethylene Productionmentioning

confidence: 99%

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Effect of Harvesting Stages and Calcium Chloride Application on Postharvest Quality of Tomato Fruits

et al. 2021

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Tomatoes are a good source of vitamins, minerals, antioxidants, and enzymes, which are beneficial to human health. They are one of the most commercially high-value vegetable crops that experience a huge postharvest loss after harvest. The present experiment is conducted to investigate the effect of different maturity stages (mature green, breaker, and half-ripe stage), pre- and post-harvest treatment with different concentrations (0.0%, 1.0%, 1.5%, and 2.0%, w/v) of calcium chloride (CaCl2) on the postharvest performance, antioxidant and enzymatic activity of lowland tomato fruits, stored at ambient temperature (28 ± 2 °C and 75 ± 5% RH). Tomato fruit of mature green stage treated with 2% CaCl2 significantly (p = 0.05) declined the ethylene production (15.53%), weight loss (16.43%), and delayed color development by slowly synthesizes the lycopene content as well as extended the shelf life. The maximum amount of total phenolic content (TPC) was demonstrated at the highest level of CaCl2 (2%) after 20 days of storage life at ambient conditions. The concentration of CaCl2 influenced the activity of different plant defense enzymes, and the higher doses of CaCl2 (2%) accelerated the activity of peroxidase (POD) (13%), polyphenol oxidase (POP) (7.3%), and phenylalanine ammonia-lyase (PAL) (8.5%) relative to that of the control samples. Therefore, the tomato producers and traders could extend the storage duration of tomato fruits by harvesting at the mature green stage and applying 2% CaCl2 in both pre-and postharvest at ambient storage conditions.

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Section: Respiration Rate and Ethylene Productionmentioning

confidence: 99%

Section: Respiration Rate and Ethylene Productionmentioning

confidence: 99%

Effect of Harvesting Stages and Calcium Chloride Application on Postharvest Quality of Tomato Fruits

et al. 2021

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“…8B). The mechanisms by which Ca 21 effects ethylene biosynthesis are not fully understood, but it is conceivable that cytosolic Ca 21 signals may have a role in regulating ethylene production (Njoroge et al, 1998 …”

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confidence: 99%

Increased Calcium Levels and Prolonged Shelf Life in Tomatoes Expressing Arabidopsis H+/Ca2+ Transporters

et al. 2005

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Here we demonstrate that fruit from tomato (Lycopersicon esculentum) plants expressing Arabidopsis (Arabidopsis thaliana) H 1 / cation exchangers (CAX) have more calcium (Ca 21 ) and prolonged shelf life when compared to controls. Previously, using the prototypical CAX1, it has been demonstrated that, in yeast (Saccharomyces cerevisiae) cells, CAX transporters are activated when the N-terminal autoinhibitory region is deleted, to give an N-terminally truncated CAX (sCAX), or altered through specific manipulations. To continue to understand the diversity of CAX function, we used yeast assays to characterize the putative transport properties of CAX4 and N-terminal variants of CAX4. CAX4 variants can suppress the Ca 21 hypersensitive yeast phenotypes and also appear to be more specific Ca 21 transporters than sCAX1. We then compared the phenotypes of sCAX1-and CAX4-expressing tomato lines. The sCAX1-expressing tomato lines demonstrate increased vacuolar H 1 /Ca 21 transport, when measured in root tissue, elevated fruit Ca 21 level, and prolonged shelf life but have severe alterations in plant development and morphology, including increased incidence of blossom-end rot. The CAX4-expressing plants demonstrate more modest increases in Ca 21 levels and shelf life but no deleterious effects on plant growth. These findings suggest that CAX expression may fortify plants with Ca 21

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“…Calmodulin is involved in the Ca-inhibited ethylene biosynthesis. Ca may be inactivating the ethylene-forming enzyme in the ethylene biosynthetic pathway via Ca-calmodulin mediated reactions (Njoroge et al 1998;Senevirathna and Daundasekara 2010).…”

Section: Respiration and Ethylene Production Ratesmentioning

confidence: 99%

Enhancing and Maintaining Nutritional Quality and Bioactive Compounds of “Hayward” Kiwifruit: Comparison of the Effectiveness of Different CaCl₂ Spraying Times

Shiri

Ghasemnezhad

Moghadam

et al. 2015

Journal of Food Processing and Preservation

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This study was conducted to elucidate the effect of calcium chloride (CaCl2) spraying times and number of sprays on the changes in biochemical compounds of “Hayward” kiwifruit (Actinidia deliciosa) during storage as well as at the shelf life. The vines in two different commercial kiwifruit orchards were sprayed with CaCl2 (15 g/L), one, two and three times in 35, 85 and 125 days after full bloom. Fruits were harvested at maturity stage and then were stored at 0C for 90 days and 5 additional days under simulated marketing conditions. The results showed that orchard location had significant effect on fruit biochemical compounds. With a few exceptions, one‐time (early‐, mid‐, late‐season) and twice CaCl2 sprays had no significant effects on kiwifruit quality characteristics. Thrice sprays significantly reduced respiration rate, ethylene production and polygalacturonase activity that lead to delay degradation of vitamin c, phenolic compounds and antioxidant activity, and maintained fruit sensory quality. Overall, thrice sprays of CaCl2 delayed fruit ripening processes and maintained fruit quality of “Hayward” kiwifruit. Practical Applications As the importance of phytochemical content in the health benefits of fruits and vegetables is recognized, interest in the antioxidant activity, enzymes, and polyphenolic and phytochemical contents of kiwifruit has increased significantly in recent years. During cold storage, many physicochemical changes occur that significantly affect fruit quality. Polygalacturonase (PG) is a cell wall‐bound enzyme which has been found to play a role in numerous plant developmental processes such as fruit ripening and softening. Considerable attention has been given to calcium (Ca) application to kiwifruit, since maintenance of relatively high Ca concentrations in fruit tissues results in better nutrients balance, maintaining cell wall stabilization and integrity, retards fruit respiration and ripening by lower rates of CO2 and C2H4 production, PG activity, softening, and finally extends storability. It should also be noted that the beneficial effects of preharvest Ca sprays depend on the time and number of treatments and orchard location.

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Effect of calcium and calmodulin antagonists on ethylene biosynthesis in tomato fruits

Cited by 17 publications

References 16 publications

Effect of Harvesting Stages and Calcium Chloride Application on Postharvest Quality of Tomato Fruits

Effect of Harvesting Stages and Calcium Chloride Application on Postharvest Quality of Tomato Fruits

Increased Calcium Levels and Prolonged Shelf Life in Tomatoes Expressing Arabidopsis H+/Ca2+ Transporters

Enhancing and Maintaining Nutritional Quality and Bioactive Compounds of “Hayward” Kiwifruit: Comparison of the Effectiveness of Different CaCl₂ Spraying Times

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Effect of calcium and calmodulin antagonists on ethylene biosynthesis in tomato fruits

Cited by 17 publications

References 16 publications

Effect of Harvesting Stages and Calcium Chloride Application on Postharvest Quality of Tomato Fruits

Effect of Harvesting Stages and Calcium Chloride Application on Postharvest Quality of Tomato Fruits

Increased Calcium Levels and Prolonged Shelf Life in Tomatoes Expressing Arabidopsis H+/Ca2+ Transporters

Enhancing and Maintaining Nutritional Quality and Bioactive Compounds of “Hayward” Kiwifruit: Comparison of the Effectiveness of Different CaCl2 Spraying Times

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Product

Resources

About

Enhancing and Maintaining Nutritional Quality and Bioactive Compounds of “Hayward” Kiwifruit: Comparison of the Effectiveness of Different CaCl₂ Spraying Times