Sugar Metabolism in Stone Fruit: Source-Sink Relationships and Environmental and Agronomical Effects

Falchi, Rachele; Bonghi, Claudio; Drincovich, Marı́a F.; Famiani, Franco; Lara, Marı́a V.; Walker, Robert P.; Vizzotto, Giannina

doi:10.3389/fpls.2020.573982

Cited by 46 publications

(27 citation statements)

References 175 publications

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“…In general, deficit irrigation during stage 3 of fruit growth was shown to improve plum fruit quality through the enhancement of peel-to-pulp color ratio and the biosynthesis of quality-related components via the upregulation of related genes leading to an improved fruit maturation rate. Improved fruit color and TSS could also be related to reduced shoot growth and canopy size, which improved the light regime around the fruit [110][111][112][113][114]. This could also lead to poor fruit color, since improved water and nitrogen uptake resulted in enhanced vegetative growth, which in turn reduced light penetration into the canopy and around the fruit [115].…”

Section: Discussionmentioning

confidence: 99%

Deficit Irrigation to Enhance Fruit Quality of the ‘African Rose’ Plum under the Egyptian Semi-Arid Conditions

et al. 2021

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Evolved in South Africa and released to market in 2009, the ‘African Rose’ plum has been introduced and grown under the Egyptian semi-arid conditions since 2010. Within that time, this cultivar has faced significant fruit quality issues, mainly poor color and low total soluble solids (TSS). Several trials using foliarly applied growth regulators have been conducted, but with little conspicuous results on fruit yield and quality. There is very limited information about the relationship between irrigation regime and fruit quality for this cultivar. Therefore, a field experiment was conducted to study the effect of deficit irrigation on the quality of the ‘African Rose’ plum during the 2019 and 2020 seasons. Five-year-old hedge growing trees were subjected to three deficit irrigation regimes: 100% (control), 80%, and 60% of the crop evapotranspiration (ETc) after the pit hardening stage until the end of the harvest season (May to June period) were evaluated. Results indicated that deficit irrigation positively enhanced the levels of abscisic acid (ABA), total phenols, and anthocyanins with improved fruit TSS and maturity index, although fruit yield, acidity, size, and firmness were decreased. Deficit irrigation could be suggested as a sustainable novel solution to improve the fruit quality of the ‘African Rose’ plum grown under the semi-arid conditions of Egypt. Although the total yield and some quality characteristics were not improved, the early harvested fruit with enhanced color and taste could be a good start for additional research to solve other quality-related issues under such conditions.

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Section: Discussionmentioning

confidence: 99%

Deficit Irrigation to Enhance Fruit Quality of the ‘African Rose’ Plum under the Egyptian Semi-Arid Conditions

et al. 2021

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“…In vineyards, leaf removal at the level of the clusters changes the microclimate in the area around the grapes and therefore also berries' composition [156]. Defoliation directly affects the leaf/fruit ratio, which, depending on the phenological stage in which it is conducted, can produce a different effect on the maturation of the fruit [157]. Many authors examined the influence of light intensity and/or composition of the bunch zone on aroma molecules, focusing on the main aroma molecules: free aroma volatiles, glycosylated aroma precursors, C13-norisoprenoids, methoxypyrazines, and terpenes [158,159].…”

Section: Leaf Removalmentioning

confidence: 99%

Effect of Agronomic Techniques on Aroma Composition of White Grapevines: A Review

et al. 2021

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Climate change with rising temperatures and the unpredictability of rainy events during ripening leads to tough challenges for the winemakers in preserving the quality of white grape varieties. Grape quality is a complex concept that mainly refers to berry chemical composition, including secondary metabolites such as aroma compounds that in white berries play a key role in the identity of the wine. Terpenes, thiols, C13-norisoprenoids, methoxypyrazines, and nonterpenic alcohols are the most important aroma compounds in white grapes and several of them can be found as free volatiles or bound as glycoconjugate molecules. Agronomic practices in vineyards, such as biostimulant application, irrigation, defoliation, training systems, foliar fertilization, and bunch thinning, can have a positive effect on their concentration. This review aims to highlight the aromatic characteristics of the most utilized white grape cultivars and focus on agronomic techniques in the vineyard to enhance, implement, and intensify their aromatic characteristics. The purpose of this review paper is therefore to investigate the state of the art regarding the exaltation of aroma in white grapes in the scientific literature through sustainable agronomic techniques, but further future investigations are considered necessary given the uncertainty concerning some mechanisms of biosynthesis and their correlation with such agronomic practices.

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“…It is well recognized that phloem unloading in sink organs plays a critical role in regulating the distribution of photoassimilate [ 23 ]. Post-phloem transport has symplastic and/or apoplastic pathways depending on the type of organ and developmental state [ 24 ]. The vascular bundles of litchi fruit end in the funicle or seed stalk.…”

Section: Sugar Accumulation In Litchi Fruitmentioning

confidence: 99%

Sugar Transport, Metabolism and Signaling in Fruit Development of Litchi chinensis Sonn: A Review

Fan¹,

Wang²,

Xie³

et al. 2021

IJMS

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Litchi chinensis Sonn. is an important evergreen fruit crop cultivated in the tropical and subtropical regions. The edible portion of litchi fruit is the aril, which contains a high concentration of sucrose, glucose, and fructose. In this study, we review various aspects of sugar transport, metabolism, and signaling during fruit development in litchi. We begin by detailing the sugar transport and accumulation during aril development, and the biosynthesis of quebrachitol as a transportable photosynthate is discussed. We then document sugar metabolism in litchi fruit. We focus on the links between sugar signaling and seed development as well as fruit abscission. Finally, we outline future directions for research on sugar metabolism and signaling to improve fruit yield and quality.

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Sugar Metabolism in Stone Fruit: Source-Sink Relationships and Environmental and Agronomical Effects

Cited by 46 publications

References 175 publications

Deficit Irrigation to Enhance Fruit Quality of the ‘African Rose’ Plum under the Egyptian Semi-Arid Conditions

Deficit Irrigation to Enhance Fruit Quality of the ‘African Rose’ Plum under the Egyptian Semi-Arid Conditions

Effect of Agronomic Techniques on Aroma Composition of White Grapevines: A Review

Sugar Transport, Metabolism and Signaling in Fruit Development of Litchi chinensis Sonn: A Review

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