Exogenous putrescine and 1-methylcyclopropene prevent soft scald in ‘Starkrimson’ pear

Xiang, Fangxin; Gao, Rui; Chen, Yu; Pang, Jianwen; Liu, Shanshan; Linghu, Tian; Zhai, Rui; Wang, Zhigang; Xu, Lingfei

doi:10.1016/j.postharvbio.2022.112035

Cited by 3 publications

(2 citation statements)

References 58 publications

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“…The cell wall hydrolases enzymatically degrade pectin, cellulose, and other polysaccharides present in the cell walls, resulting in an elevation of soluble pectin and soluble sugar content. The role of these enzymes in fruit softening has been demonstrated in various fruits such as apples [31], strawberries [32], grapes [33], and pears [34]. Our previous experiments also revealed a close relationship between polygalacturonase, β-Glucosidase, cellulase, and peach softening [11].…”

Section: Degradation Of Cell Wall Materialsmentioning

confidence: 60%

Elucidating Softening Mechanism of Honey Peach (Prunus persica L.) Stored at Ambient Temperature Using Untargeted Metabolomics Based on Liquid Chromatography-Mass Spectrometry

Kong,

Luo,

Chen

et al. 2023

Horticulturae

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Peach fruit softening is the result of a series of complex physiological and biochemical reactions that influence shelf life and consumer acceptance; however, the precise mechanisms underlying softening remain unclear. We conducted a metabolomic study of the flesh and peel of the honey peach (Prunus persica L.) to identify critical metabolites before and after fruit softening. Compared to the pre-softening profiles, 155 peel metabolites and 91 flesh metabolites exhibited significant changes after softening (|log2(FC)| > 1; p < 0.05). These metabolites were mainly associated with carbohydrate metabolism, respiratory chain and energy metabolism (citrate cycle, pantothenate and CoA biosynthesis, nicotinate and nicotinamide metabolism, and pentose and glucuronate interconversions), reactive oxygen species (ROS) metabolism, amino acid metabolism, and pyrimidine metabolism. During peach fruit softening, energy supply, carbohydrate and amino acid metabolism, oxidative damage, and plant hormone metabolism were enhanced, whereas amino acid biosynthesis and cell growth declined. These findings contribute to our understanding of the complex mechanisms of postharvest fruit softening, and may assist breeding programs in improving peach fruit quality during storage.

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Section: Degradation Of Cell Wall Materialsmentioning

confidence: 60%

Elucidating Softening Mechanism of Honey Peach (Prunus persica L.) Stored at Ambient Temperature Using Untargeted Metabolomics Based on Liquid Chromatography-Mass Spectrometry

Kong,

Luo,

Chen

et al. 2023

Horticulturae

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“…As low-molecular-weight and aliphatic polycations, polyamines participate in plant abiotic stress responses via binding to anionic macromolecules, regulating transcription and translation, and modulating the antioxidant system (Liu et al 2015 ; Winter et al 2015 ). The most common polyamines in plants include putrescine, spermidine, and spermine (Xiang et al 2022 ). Chilling exposure stimulates the accumulation of endogenous polyamines in the epidermal tissue of pear fruit; moreover, the application of exogenous putrescine can serve to mitigate superficial scald development (Calvo et al 2018 ; Li et al 2021a ).…”

Section: Introductionmentioning

confidence: 99%

PbrWRKY62-PbrADC1 module involves in superficial scald development of Pyrus bretschneideri Rehd.fruit via regulating putrescine biosynthesis

Zhang,

Zhu,

Qian

et al. 2024

Mol Horticulture

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Putrescine plays a role in superficial scald development during the cold storage of pear fruit. However, the molecular mechanism behind this phenomenon has not been un-fully clarified until recently. In this study, a conjoint analysis of metabolites and gene expression profiles in the putrescine-metabolic pathway of P. bretschneideri Rehd. fruit followed by experimental validation revealed that PbrADC1, forming a homodimer in the chloroplast, was involved in putrescine biosynthesis and thus fruit chilling resistance. Additionally, the substrate-binding residue Cys546 in PbrADC1, whose activity was modified by H2O2, played a crucial role in arginine decarboxylation into agmatine. Through a combined analysis of the distribution of cis-acting elements in the PbrADC1 promoter as well as the expression profiles of related transcription factors (TFs), several TFs were identified as upstream regulators of PbrADC1 gene. Further investigation revealed that the nuclear PbrWRKY62 could directly bind to the W-box elements in the PbrADC1 promoter, activate its expression, enhance putrescine accumulation, and thus increase fruit chilling tolerance. In conclusion, our results suggest that the PbrWRKY62-PbrADC1 module is involved in the development of superficial scald in P. bretschneideri Rehd. fruit via regulating putrescine biosynthesis. Consequently, these findings could serve as valuable genetic resources for breeding scald-resistant pear fruit. Graphical Abstract

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Biochemical compounds related to superficial scald and soft scald in ‘Abate Fetel’ pears

Buccheri,

Caramanico,

Cortellino

et al. 2024

Acta Hortic.

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Exogenous putrescine and 1-methylcyclopropene prevent soft scald in ‘Starkrimson’ pear

Cited by 3 publications

References 58 publications

Elucidating Softening Mechanism of Honey Peach (Prunus persica L.) Stored at Ambient Temperature Using Untargeted Metabolomics Based on Liquid Chromatography-Mass Spectrometry

Elucidating Softening Mechanism of Honey Peach (Prunus persica L.) Stored at Ambient Temperature Using Untargeted Metabolomics Based on Liquid Chromatography-Mass Spectrometry

PbrWRKY62-PbrADC1 module involves in superficial scald development of Pyrus bretschneideri Rehd.fruit via regulating putrescine biosynthesis

Biochemical compounds related to superficial scald and soft scald in ‘Abate Fetel’ pears

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