Advances in the Use of 1-MCP

Watkins, Christopher B.

doi:10.1201/b18489-7

Cited by 16 publications

(13 citation statements)

References 257 publications

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“…The involvement of ethylene in primary metabolism has been explored in many ways that include investigations into metabolism of normally ripening fruits, use of mutants or transgenic approaches, ethylene treatment of fruits with ethylene [directly as a gas or by use of ethylene releasing agents such as 2-chloroethylphosphonic acid (ethephon)], and ethylene analogues such as propylene. Ethylene antagonists such as silver and 1-MCP also have been used; of the two, 1-MCP has been especially useful for researchers due to its non-toxic nature, gaseous form at physiological temperatures, and its effectiveness at low concentrations (Sisler and Serek, 2003;Watkins, 2015). Although ethylene concentrations around fruits can also be lowered by methods such as ventilation, avoidance, and absorbers and oxidizers (Martinez-Romero et al, 2007), there is little information about their effects on primary metabolism.…”

Section: Ethylene Effects On Primary Metabolism Of Harvested Fruitsmentioning

confidence: 99%

“…In general, application of ethylene to climacteric fruits accelerates the rate of ripening (Saltveit, 1999), while 1-MCP decreases the rate of ripening, and in some cases can totally inhibit it (Watkins, 2006;Watkins, 2015). However, 1-MCP induces variable responses in different climacteric fruit species and even in cultivars of the same species (Watkins, 2015). Ethylene biosynthetic and signal transduction pathways of apples and peaches are differentially affected by 1-MCP action (Dal Cin et al, 2006).…”

Section: Ethylene Effects On Primary Metabolism Of Harvested Fruitsmentioning

confidence: 99%

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Primary Metabolism in Fresh Fruits During Storage

et al. 2020

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The extension of commercial life and the reduction of postharvest losses of perishable fruits is mainly based on storage at low temperatures alone or in combination with modified atmospheres (MAs) and controlled atmospheres (CAs), directed primarily at reducing their overall metabolism thus delaying ripening and senescence. Fruits react to postharvest conditions with desirable changes if appropriate protocols are applied, but otherwise can develop negative and unacceptable traits due to the onset of physiological disorders. Extended cold storage periods and/or inappropriate temperatures can result in development of chilling injuries (CIs). The etiology, incidence, and severity of such symptoms vary even within cultivars of the same species, indicating the genotype significance. Carbohydrates and amino acids have protective/regulating roles in CI development. MA/CA storage protocols involve storage under hypoxic conditions and high carbon dioxide concentrations that can maximize quality over extended storage periods but are also affected by the cultivar, exposure time, and storage temperatures. Pyruvate metabolism is highly reactive to changes in oxygen concentration and is greatly affected by the shift from aerobic to anaerobic metabolism. Ethylene-induced changes in fruits can also have deleterious effects under cold storage and MA/CA conditions, affecting susceptibility to chilling and carbon dioxide injuries. The availability of the inhibitor of ethylene perception 1-methylcyclopropene (1-MCP) has not only resulted in development of a new technology but has also been used to increase understanding of the role of ethylene in ripening of both non-climacteric and climacteric fruits. Temperature, MA/CA, and 1-MCP alter fruit physiology and biochemistry, resulting in compositional changes in carbon-and nitrogen-related metabolisms and compounds. Successful application of these storage technologies to fruits must consider their effects on the metabolism of carbohydrates, organic acids, amino acids and lipids.

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Section: Ethylene Effects On Primary Metabolism Of Harvested Fruitsmentioning

confidence: 99%

Section: Ethylene Effects On Primary Metabolism Of Harvested Fruitsmentioning

confidence: 99%

Primary Metabolism in Fresh Fruits During Storage

et al. 2020

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“…Through the exploration of the underlying genetic factors of ripening of both climacteric and nonclimacteric fruit in model systems, foundations have been laid for evaluation of ripening processes in nonmodel fruits exhibiting deviations from the standard profiles. Not surprisingly, manipulation of environmental factors, genetic factors, and use of chemical inhibitors like 1-methylcyclopropene (1-MCP) to inhibit ripening result in developmental patterns that do not follow the classical model of ethylene response and signaling (Watkins, 2006(Watkins, , 2015Tatsuki et al, 2007;Chiriboga et al, 2013). Mechanisms for blockage and/or bypass of the concerted steps in classical ethylene biosynthesis are beginning to be elucidated as more studies examine how genetic manipulation or stimulation via temperature or chemical application affect ripening (Klee and Giovannoni, 2011;Hewitt et al, 2020a,b).…”

Section: Introductionmentioning

confidence: 99%

Beyond Ethylene: New Insights Regarding the Role of Alternative Oxidase in the Respiratory Climacteric

Hewitt

Dhingra

2020

Front. Plant Sci.

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Climacteric fruits are characterized by a dramatic increase in autocatalytic ethylene production that is accompanied by a spike in respiration at the onset of ripening. The change in the mode of ethylene production from autoinhibitory to autostimulatory is known as the System 1 (S1) to System 2 (S2) transition. Existing physiological models explain the basic and overarching genetic, hormonal, and transcriptional regulatory mechanisms governing the S1 to S2 transition of climacteric fruit. However, the links between ethylene and respiration, the two main factors that characterize the respiratory climacteric, have not been examined in detail at the molecular level. Results of recent studies indicate that the alternative oxidase (AOX) respiratory pathway may play an essential role in mediating cross-talk between ethylene response, carbon metabolism, ATP production, and ROS signaling during climacteric ripening. New genomic, metabolic, and epigenetic information sheds light on the interconnectedness of ripening metabolic pathways, necessitating an expansion of the current, ethylene-centric physiological models. Understanding points at which ripening responses can be manipulated may reveal key, species-and cultivarspecific targets for regulation of ripening, enabling superior strategies for reducing postharvest wastage.

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“…The underlying genetic factors of ripening of both climacteric and non-climacteric fruit have been explored in model systems, laying a foundation for evaluation of ripening processes in fruits exhibiting deviations. Not surprisingly, manipulation of environmental factors, genetic factors, and use of chemical inhibitors like 1-methylcyclopropene (1-MCP) to inhibit ripening result in developmental patterns that don't follow the classical model of ethylene response and signaling [19][20][21][22]. Mechanisms for blockage and/or bypass of the concerted steps in classical ethylene biosynthesis are beginning to be elucidated as more studies examine variations in the classical paradigm of ripening via genetic manipulation or exogenous perturbation by temperature or chemicals [23,24].…”

Section: Introductionmentioning

confidence: 99%

Beyond Ethylene: New Insights Regarding the Role of AOX in the Respiratory Climacteric

Hewitt¹,

Dhingra²

2019

Preprint

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Climacteric fruits are characterized by a dramatic increase in autocatalytic ethylene production, which is accompanied by a spike in respiration, at the onset of ripening. The change in the mode of ethylene production from autoinhibitory to auto-stimulatory is known as the system 1 (S1) to system 2 (S2) transition. Existing physiological models explain the basic and overarching genetic, hormonal, and transcriptional regulatory mechanisms governing the S1 to S2 transition of climacteric fruit. However, the links between ethylene and respiration, the two main factors that characterize the respiratory climacteric, have been largely understudied at the molecular level. Results of recent studies indicate that the AOX respiratory pathway may play an important role in mediating cross talk between ethylene response, carbon metabolism, ATP production, and ROS signaling during climacteric ripening. New genomic, metabolic, and epigenetic information sheds light on the interconnectedness of ripening-associated metabolic pathways, necessitating expanding the current, ethylene-centric physiological models. Understanding points at which ripening responses can be manipulated may reveal key, speciesand cultivar-specific targets for regulation of ripening enabling superior strategies for reducing postharvest wastage.

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Advances in the Use of 1-MCP

Cited by 16 publications

References 257 publications

Primary Metabolism in Fresh Fruits During Storage

Primary Metabolism in Fresh Fruits During Storage

Beyond Ethylene: New Insights Regarding the Role of Alternative Oxidase in the Respiratory Climacteric

Beyond Ethylene: New Insights Regarding the Role of AOX in the Respiratory Climacteric

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