Effects of low light on phloem ultrastructure and subcellular localization of sucrose synthase in Prunus persica L. var. nectarina Ait. fruit

Wang, X. Q.; Huang, Weidong; Zhan, Jicheng

doi:10.1134/s1021443709040049

Cited by 11 publications

(4 citation statements)

References 37 publications

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“…Sugar is transported through the phloem from leaf (source) to fruit (sink) for metabolism and storage [44,45]. Compared with the control, the contents of sucrose and reducing sugars in fruits of strawberry, apple, and nectarine were significantly reduced under low light [4,5,18,46,47]. In this study, sucrose was the major sugar component, which was similar to other cultivars of jujube [27].…”

Section: Shading Inhibited Sugar Accumulation In Fruitssupporting

confidence: 68%

Shading Inhibits Sugar Accumulation in Leaf and Fruit of Jujube (Ziziphus jujuba Mill.)

Wang

Ren

et al. 2022

Horticulturae

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Jujube is a characteristic light-demanding fruit tree, but fruit quality is frequently degraded because of the weak light in protected cultivation facilities in south China. In this study, a black shade net was used to set three light intensities artificially: no shading (0%, control, NS), moderate shading (45%, MS), and severe shading (76%, SS) to investigate the effect of low light on sugar metabolism of jujube. Compared with NS, chlorophyll and carotenoid contents in shaded leaves were increased, while specific leaf weight was decreased. A decrease in sucrose content, rather than fructose and glucose, was the main factor affecting sugar content in shaded leaves and fruits. Low expression of ZjSS2 and ZjSS3 inhibited sugar synthesis in shaded leaves, thereby reducing sucrose content by 23.7% in SS leaf than that in NS. Compared with NS, sucrose content in SS fruit was decreased by 58.1%, which was mainly caused by the down-regulated expression of ZjSS2 and ZjSPS1. In conclusion, sugar accumulation in leaf and fruit with shading treatment was suppressed, which was associated with differential transcription levels of related metabolic genes. The study provides new insights into sugar metabolism in leaf and fruit of phototropic plants under low light environments, such as jujube.

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Section: Shading Inhibited Sugar Accumulation In Fruitssupporting

confidence: 68%

Shading Inhibits Sugar Accumulation in Leaf and Fruit of Jujube (Ziziphus jujuba Mill.)

Wang

Ren

et al. 2022

Horticulturae

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“…Moreover, shading results in coordinated changes in the expression of carbohydrate metabolism-related genes, key transcription factors related to fruit growth and genes associated with cell production and expansion [ 7 ]. During the early peach developmental stage, the formation of starch grains was inhibited and fewer photoassimilates were translocated from source leaves to fruit sinks [ 8 ]. After shading, the imported assimilates of the melon were reduced in number and galactosyl-sucrose oligosaccharide unloading was inhibited.…”

Section: Introductionmentioning

confidence: 99%

Transcriptome Analysis Reveals the Genes Related to Water-Melon Fruit Expansion under Low-Light Stress

Gao

She

Sun

et al. 2023

Plants

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Watermelon is one of people’s favorite fruits globally. Fruit size is one of the important characteristics of fruit quality. Low light can seriously affect fruit development, but there have been no reports concerning molecular mechanism analysis in watermelons involved in fruit expansion under low-light stress. To understand this mechanism, the comparative transcriptomic file of watermelon fruit flesh at four different developmental stages under different light levels was studied. The results showed that the fruit size and content of soluble sugar and amino acids at low-light stress significantly decreased compared to the control. In addition, 0–15 DAP was the rapid expansion period of watermelon fruit affected by shading. In total, 8837 differentially expressed genes (DEGs) were identified and 55 DEGs were found to play a role in the four different early fruit development stages. We also found that genes related to oxidation-reduction, secondary metabolites, carbohydrate and amino acid metabolism and transcriptional regulation played a key role in watermelon fruit expansion under low-light stress. This study provides a foundation to investigate the functions of low-light stress-responsive genes and the molecular mechanism of the effects of low-light stress on watermelon fruit expansion.

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“…Soluble sugars, including sucrose, fructose, and glucose, accumulate in the fruit and are important for growth and development, serving as energy substances and providing resistance to external abiotic stresses [3]. Changes in sugar concentrations in leaves and roots can significantly affect photosynthesis and respiratory metabolism, respectively [4]. Environmental stresses, such as temperature stress, drought, and salt, can limit plant growth and development and cause significant crop losses [1,5].…”

Section: Introductionmentioning

confidence: 99%

Transcriptome Co-Expression Network Analysis of Peach Fruit with Different Sugar Concentrations Reveals Key Regulators in Sugar Metabolism Involved in Cold Tolerance

Wang

Zheng

et al. 2023

Foods

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Peach fruits are known to be highly susceptible to chilling injury (CI) during low-temperature storage, which has been linked to the level of sugar concentration in the fruit. In order to better understand the relationship between sugar metabolism and CI, we conducted a study examining the concentration of sucrose, fructose, and glucose in peach fruit with different sugar concentrations and examined their relationship with CI. Through transcriptome sequencing, we screened the functional genes and transcription factors (TFs) involved in the sugar metabolism pathway that may cause CI in peach fruit. Our results identified five key functional genes (PpSS, PpINV, PpMGAM, PpFRK, and PpHXK) and eight TFs (PpMYB1/3, PpMYB-related1, PpWRKY4, PpbZIP1/2/3, and PpbHLH2) that are associated with sugar metabolism and CI development. The analysis of co-expression network mapping and binding site prediction identified the most likely associations between these TFs and functional genes. This study provides insights into the metabolic and molecular mechanisms regulating sugar changes in peach fruit with different sugar concentrations and presents potential targets for breeding high-sugar and cold-tolerant peach varieties.

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Effects of low light on phloem ultrastructure and subcellular localization of sucrose synthase in Prunus persica L. var. nectarina Ait. fruit

Cited by 11 publications

References 37 publications

Shading Inhibits Sugar Accumulation in Leaf and Fruit of Jujube (Ziziphus jujuba Mill.)

Shading Inhibits Sugar Accumulation in Leaf and Fruit of Jujube (Ziziphus jujuba Mill.)

Transcriptome Analysis Reveals the Genes Related to Water-Melon Fruit Expansion under Low-Light Stress

Transcriptome Co-Expression Network Analysis of Peach Fruit with Different Sugar Concentrations Reveals Key Regulators in Sugar Metabolism Involved in Cold Tolerance

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