Effect of ethylene and 1-methylcyclopropene on bitter compounds in carrots (Daucus carota L.)

Kramer, Maike; Bufler, G.; Ulrich, Detlef; Leitenberger, Martin; Conrad, Jürgen; Carle, Reinhold

doi:10.1016/j.postharvbio.2012.05.009

Cited by 29 publications

(14 citation statements)

References 48 publications

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“…In addition, myristicin seems to potentiate the action of phytoalexins as 6-methoxymellein in carrot root [71]. Kramer et al (2010) [72] showed that 6-methoxymellein and myristicin levels were both enhanced after ethylene treatment, a phytohormone involved in biotic and abiotic stress [73]. D-germacrene plays a leading part in interaction of plant with environment and has a key role in sesquiterpene biosynthesis as precursor of numerous sesquiterpenes [74].…”

Section: Evaluation Of Varietal Metabolite Accumulation Potential Conmentioning

confidence: 99%

Multisite evaluation of phenotypic plasticity for specialized metabolites, some involved in carrot quality and disease resistance

et al. 2021

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Renewed consumer demand motivates the nutritional and sensory quality improvement of fruits and vegetables. Specialized metabolites being largely involved in nutritional and sensory quality of carrot, a better knowledge of their phenotypic variability is required. A metabolomic approach was used to evaluate phenotypic plasticity level of carrot commercial varieties, over three years and a wide range of cropping environments spread over several geographical areas in France. Seven groups of metabolites have been quantified by HPLC or GC methods: sugars, carotenoids, terpenes, phenolic compounds, phenylpropanoids and polyacetylenes. A large variation in root metabolic profiles was observed, in relation with environment, variety and variety by environment interaction effects in decreasing order of importance. Our results show a clear diversity structuration based on metabolite content. Polyacetylenes, β-pinene and α-carotene were identified mostly as relatively stable varietal markers, exhibiting static stability. Nevertheless, environment effect was substantial for a large part of carrot metabolic profile and various levels of phenotypic plasticity were observed depending on metabolites and varieties. A strong difference of environmental sensitivity between varieties was observed for several compounds, particularly myristicin, 6MM and D-germacrene, known to be involved in responses to biotic and abiotic stress. This work provides useful information about plasticity in the perspective of carrot breeding and production. A balance between constitutive content and environmental sensitivity for key metabolites should be reached for quality improvement in carrot and other vegetables.

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Section: Evaluation Of Varietal Metabolite Accumulation Potential Conmentioning

confidence: 99%

Multisite evaluation of phenotypic plasticity for specialized metabolites, some involved in carrot quality and disease resistance

et al. 2021

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“…A typical characteristic of monoterpenes and sesquiterpenes is their volatility, and therefore they contribute to the typical flavor and aroma of many plant species (Pichersky and Gershenzon, 2002 ). In carrots they are important for taste and flavor but are also known to influence bitterness (Kramer et al, 2012 ).…”

Section: Introductionmentioning

confidence: 99%

“…The typical flavor of carrots has been attributed mainly to volatile terpenoids, with mono- and sesquiterpenes representing approximately 98% of the VOCs (Alasalvar et al, 1999 ; Kjeldsen et al, 2001 ). Terpenes are generally involved in a harsh or bitter flavor and these flavor attributes were shown to increase directly with terpene content in different carrot genotypes (Kreutzmann et al, 2008 ; Kramer et al, 2012 ). Monoterpenes like sabinene and β-myrcene seem to be important contributors to the “carrot top” aroma whereas sesquiterpenes like β-caryophyllene and α-humulene contribute to the “spicy” and “woody” notes (Kjeldsen et al, 2003 ).…”

Section: Introductionmentioning

confidence: 99%

The Terpene Synthase Gene Family of Carrot (Daucus carota L.): Identification of QTLs and Candidate Genes Associated with Terpenoid Volatile Compounds

et al. 2017

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Terpenes are an important group of secondary metabolites in carrots influencing taste and flavor, and some of them might also play a role as bioactive substances with an impact on human physiology and health. Understanding the genetic and molecular basis of terpene synthases (TPS) involved in the biosynthesis of volatile terpenoids will provide insights for improving breeding strategies aimed at quality traits and for developing specific carrot chemotypes possibly useful for pharmaceutical applications. Hence, a combination of terpene metabolite profiling, genotyping-by-sequencing (GBS), and genome-wide association study (GWAS) was used in this work to get insights into the genetic control of terpene biosynthesis in carrots and to identify several TPS candidate genes that might be involved in the production of specific monoterpenes. In a panel of 85 carrot cultivars and accessions, metabolite profiling was used to identify 31 terpenoid volatile organic compounds (VOCs) in carrot leaves and roots, and a GBS approach was used to provide dense genome-wide marker coverage (>168,000 SNPs). Based on this data, a total of 30 quantitative trait loci (QTLs) was identified for 15 terpenoid volatiles. Most QTLs were detected for the monoterpene compounds ocimene, sabinene, β-pinene, borneol and bornyl acetate. We identified four genomic regions on three different carrot chromosomes by GWAS which are both associated with high significance (LOD ≥ 5.91) to distinct monoterpenes and to TPS candidate genes, which have been identified by homology-based gene prediction utilizing RNA-seq data. In total, 65 TPS candidate gene models in carrot were identified and assigned to known plant TPS subfamilies with the exception of TPS-d and TPS-h. TPS-b was identified as largest subfamily with 32 TPS candidate genes.

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“…The use of such treatment depends on the physiological characteristics of each commodity (Blankenship and Dole 2003;Boquete et al 2004). The effect of ethylene and 1-methylcyclopropene on the quality of different fruits and vegetables was studied recently itself and also in combination (Kramer et al 2012;Sivakumar et al 2012;Zhang et al 2013). Boquete et al (2004) and Kim et al (2001) determined that application of 1-MCP in kiwi fruits reduces ethylene production and softening during cold storage and subsequently exposed to 20°C.…”

Section: Introductionmentioning

confidence: 99%

Shelf life extension and antioxidant activity of ‘Hayward’ kiwi fruit as a result of prestorage conditioning and 1-methylcyclopropene treatment

Park

Im²,

Gorinstein

2014

J Food Sci Technol

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Kiwi fruits (Actinidia deliciosa C.F. Liang et A.R. Ferguson) were treated by prestorage conditioning (20°C for 2 days), 1-methylcyclopropene (1-MCP, 1 ppm for 16 h) and conditioning plus 1-MCP. After the treatment the fruits were immediately stored at 0°C during 24 weeks. Flesh firmness gradually decreased with storage time and the rate of its loss was lower in 1-MCP and conditioning plus 1-MCP treatments than those of control or conditioning. However, SSC, acidity and pH did not change among treatments. Starch content decreased during the storage time regardless of treatments. Oppositely the amount of reducing sugars increased at the same duration of the treatments. Rate and incidence of fruit decay was the lowest in fruit treated with conditioning plus 1-MCP treatment. Fruit decay mainly caused pathogen Botrytis cinerea and its rate significantly decreased with conditioning plus 1-MCP treatment. Ethylene and respiration abruptly increased after 8 weeks of storage, but their contents were lower in 1-MCP and conditioning plus 1-MCP. Total soluble phenolics, flavonoids, and total antioxidant capacities were much higher than in other treatments. Kiwi fruits treated with conditioning plus 1-MCP extended the shelf life by reducing the rate of fruit decay and softening during the storage. The bioactive compounds and total antioxidant status of fruits increased during the treatment.

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Effect of ethylene and 1-methylcyclopropene on bitter compounds in carrots (Daucus carota L.)

Cited by 29 publications

References 48 publications

Multisite evaluation of phenotypic plasticity for specialized metabolites, some involved in carrot quality and disease resistance

Multisite evaluation of phenotypic plasticity for specialized metabolites, some involved in carrot quality and disease resistance

The Terpene Synthase Gene Family of Carrot (Daucus carota L.): Identification of QTLs and Candidate Genes Associated with Terpenoid Volatile Compounds

Shelf life extension and antioxidant activity of ‘Hayward’ kiwi fruit as a result of prestorage conditioning and 1-methylcyclopropene treatment

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