Postharvest Biology and Technology最新文献

{"title":"Phenylalanine application enhances resistance metabolite accumulation and antioxidant capacity to alleviate chilling injury in postharvest nectarines","authors":"Yudong Liu ,&nbsp;Jinlong Wu ,&nbsp;Yong Li ,&nbsp;Wei Deng ,&nbsp;Zhengguo Li ,&nbsp;Ke Cao ,&nbsp;Lirong Wang","doi":"10.1016/j.postharvbio.2025.113912","DOIUrl":"10.1016/j.postharvbio.2025.113912","url":null,"abstract":"<div><div>Peach fruit soften rapidly after picking, and cold storage is a common approach to extend the shelf life of peaches, but long-term low temperature storage is prone to cause chilling injury. In this study, phenylalanine (Phe) application effectively alleviated chilling injury in nectarine fruit, metabolome and transcriptome analyses revealed that multiple resistance pathways were induced by Phe treatment. Phe regulated primary and secondary metabolism, and the expression of several sugar metabolism genes was elevated following Phe treatment. The increased total flavonoids and total carotenoids contents in Phe-treated fruit maintained fruit nutrition and helped improve the free radical scavenging capacity. Phe treatment enhanced the activity of several antioxidant enzymes, including catalase, peroxidase, and superoxide dismutase, while reducing malondialdehyde content. Additionally, Phe inhibited the activity of pectate lyase, polygalacturonase, and β-galactosidase enzymes, thereby preventing the degradation of protopectin and delaying fruit softening during cold storage. Many phytohormone signaling genes were regulated in Phe-treated fruit, and Phe treatment primarily affected abscisic acid signaling. Moreover, several transcription factors and functional genes were identified as key factors in alleviating chilling injury caused by Phe application. This study comprehensively revealed the beneficial effects of phenylalanine on the cold resistance of nectarines during low temperature storage.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"231 ","pages":"Article 113912"},"PeriodicalIF":6.8,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145045003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revealing the significance of melatonin in postharvest quality of tomato fruit, especially in sugar metabolism and transport","authors":"Yunzhi Liu,&nbsp;Yiping Feng,&nbsp;Siling Chen,&nbsp;Yuna Pan,&nbsp;Junrong Xu,&nbsp;Wenjin Yu,&nbsp;Changxia Li","doi":"10.1016/j.postharvbio.2025.113909","DOIUrl":"10.1016/j.postharvbio.2025.113909","url":null,"abstract":"<div><div>As a natural product, melatonin (MT) plays an important role in regulating postharvest fruit quality. However, the evaluation of MT’s effects on fruit quality remains underexplored. Here three tomato cultivars ‘Ailsa Craig (AC)’, ‘Fen Beibei (FBB)’, and ‘Provence (PV)’ were treated with 0, 50, 100, 200, and 500 μM MT, and measuring quality indicators combined with the comprehensive evaluation were conducted. Results showed that different concentrations of MT promoted fruit coloring and fruit softening, as well as elevated the sugar-to-acid ratio compared to control. The principal component analysis-weighted membership function (PCA-MF) indicated that 100 μM MT exhibited the best effect on improving postharvest fruit quality. At this concentration, MT enhanced lycopene accumulation and reduced chlorophyll content. Concurrently, the pectin, cellulose, and hemicellulose contents were decreased by MT. Glucose, fructose, and sucrose were increased, while citric acid and malic acid were decreased under MT treatment. According to PCA-MF, MT had differential effects on postharvest fruit quality among the three tomato cultivars, following the order PV&gt;AC&gt;FBB. Grey relational analysis revealed that the sugar metabolism-related indicators played a significant role in quality evaluation. MT affected fruit sugar metabolism and transport by upregulating the expression of <em>SlTIV1, SlSWEET15, SlLIN5</em> and <em>SlTMT2</em>, <em>SlAMY2, SlBAM3</em>, downregulating the expression of <em>SlSUT4, SlFRK2</em> and <em>SlCIF1</em>. Meanwhile, the expression of sugar metabolism-related transcription factor genes <em>SlAREB1</em>, <em>SlHY5</em>, <em>SlARF10</em>, <em>SlbZIP1</em>, and <em>SlCDPK27</em> was regulated by MT. Therefore, MT significantly affected sugar metabolism and transport of tomato fruit, thereby improving postharvest quality.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"231 ","pages":"Article 113909"},"PeriodicalIF":6.8,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contradicting effects of ascorbic acid and hydrogen peroxide on oxidative stress-induced senescence of strawberry fruit and FaAIF gene expression","authors":"Yingying Dong ,&nbsp;Qiannan Hu ,&nbsp;Mengfei Mao ,&nbsp;Xiaoning Zhu ,&nbsp;Yizhou Xiang ,&nbsp;Li Li","doi":"10.1016/j.postharvbio.2025.113908","DOIUrl":"10.1016/j.postharvbio.2025.113908","url":null,"abstract":"<div><div>Oxidative stress resulting from hydrogen peroxide (H₂O₂) accumulation plays a pivotal role in strawberry postharvest deterioration. This study addressed the function of ascorbic acid (AsA) in enhancing stress tolerance by reshaping redox gene expression, highlighting the involvement of <em>FaAIF</em>, a putative executor of oxidative cell death. Strawberry fruits were treated with 0.3 M H₂O₂ and/or 0.3 M AsA and stored at room temperature. AsA markedly alleviated deterioration, as evidenced by reduced weight loss, increased firmness, and preserved total acidity. Biochemical analyses revealed that AsA suppressed ROS accumulation and lipid peroxidation while increasing SOD and CAT activities and maintaining redox homeostasis through improvements in the AsA/DHA and GSH/GSSG ratios. Notably, AsA treatment downregulated <em>FaAIF</em> and other oxidative genes (e.g., <em>FaNOX</em> and <em>FaPOD</em>) while promoting the expression of antioxidant genes (e.g., <em>FaSOD</em>, <em>FaCAT</em>, and <em>FaAPX</em>), indicating coordinated regulation of antioxidant defense and cell death pathways. These findings highlight the dual role of AsA in reinforcing antioxidant defense and repressing ROS-triggered cell death, suggesting a potential strategy for improving postharvest strawberry preservation.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"231 ","pages":"Article 113908"},"PeriodicalIF":6.8,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Postharvest processing enhances flavor and quality of chrysanthemum: Insights from moisture status, aroma formation, and metabolomic profiling","authors":"Huihuang Xu ,&nbsp;Min Wu ,&nbsp;Lin Chen ,&nbsp;Parag Prakash Sutar ,&nbsp;Zhian Zheng","doi":"10.1016/j.postharvbio.2025.113901","DOIUrl":"10.1016/j.postharvbio.2025.113901","url":null,"abstract":"<div><div><em>Chrysanthemum morifolium</em> Ramat. is a seasonal horticultural crop valued for its ornamental appeal and nutritional benefits. However, its high moisture content and active endogenous metabolism after harvest make it highly perishable. To stabilize postharvest quality, kill-green and drying treatments are commonly employed. Despite their practical importance, the mechanisms by which these treatments influence the flavor and quality development of chrysanthemums after harvest remain unclear. This study comprehensively examined changes in water content and status, phenolic compounds, aroma precursors, and volatile and non-volatile metabolites across different processing stages. The kill-green treatment and subsequent drying process were characterized by progressive reductions in water content, water activity, and drying rate. Low-field nuclear magnetic resonance (LF NMR) analysis confirmed that the relatively high bound water content was responsible for the reduced drying rate in the later stages. The kill-green treatment resulted in significant (<em>p</em> &lt; 0.05) decreases in phenolic compounds, amino acids, and fatty acids, except soluble sugars. These compounds initially increased and then decreased during drying. Of the 98 volatile compounds identified, 43 were classified by orthogonal partial least squares discriminant analysis (OPLS-DA) as differential compounds, which shaped the distinct volatile profile of chrysanthemums by interacting with olfactory receptors through hydrogen bonding and hydrophobic interactions. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses further revealed that the flavor and quality development during processing is mainly dominated by starch and sucrose metabolism and flavonoid biosynthesis pathways. This study advances the understanding of how postharvest processing influences flavor and quality development of fresh chrysanthemums, supporting the optimization of processing strategies for high-value horticultural flowers.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"231 ","pages":"Article 113901"},"PeriodicalIF":6.8,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145045018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physiological and molecular mechanisms underlying the deterioration of external quality in postharvest fresh lotus seed","authors":"Lin Chen ,&nbsp;Heyun Song ,&nbsp;Gangqiang Dong ,&nbsp;Jia Xin ,&nbsp;Mei Yang ,&nbsp;Yanyan Su ,&nbsp;Heng Sun","doi":"10.1016/j.postharvbio.2025.113896","DOIUrl":"10.1016/j.postharvbio.2025.113896","url":null,"abstract":"<div><div>Fresh lotus seeds quickly lose their external quality during postharvest storage, significantly reducing shelf-life and commercial value. However, the physiological and molecular mechanisms underlying this deterioration remain unclear. In this study, lotus seed pericarps stored at room temperature (25 ± 0.5 °C) for 96 h exhibited notable changes: firmness decreased by 69.1 %, brightness (<em>L*</em>) dropped from 83.25 to 59.67, relative water content (RWC) fell from 75.1 % to 36.4 %, and hemicellulose content decreased by 20.5 %. The browning index increased from 0 to 0.99, polyphenol oxidase (PPO) activity increased 2.3-fold, malondialdehyde (MDA) content rose 1.6-fold, and lignin and total flavonoids increased 1.2-fold and 1.3-fold, respectively. Abscisic acid (ABA) and the ethylene precursor 1-aminocyclopropanecarboxylic acid (ACC) showed dynamic changes throughout storage. RNA-sequencing identified 13,282 differentially expressed genes (DEGs) associated with energy metabolism, wax biosynthesis, and plant hormone signal transduction, with many ABA- and ethylene-related genes being significantly induced. Weighted gene co-expression network analysis (WGCNA) revealed an upregulated gene co-expression module that correlated with the observed phenotypic changes in the pericarp. In this module, we identified two PPO encoding genes, <em>NnPPO2</em> and <em>NnPPO3</em>. The expression of these genes, along with their enzyme activity, was closely linked to the deterioration of external quality. Our findings provide valuable insights into the physiological and transcriptional changes in lotus seed pericarps during postharvest storage, offering a theoretical foundation for further research aimed at improving quality and extending shelf-life.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"231 ","pages":"Article 113896"},"PeriodicalIF":6.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paenibacillus polymyxa PL6 mitigates root rot by inhibiting growth of Fusarium solani and enhancing disease resistance of sweet potato","authors":"Yushun Liu ,&nbsp;Mingming Huang ,&nbsp;Bin Wang ,&nbsp;Wenhui Li ,&nbsp;Dandan Tian ,&nbsp;Zunyang Song ,&nbsp;Jingying Shi","doi":"10.1016/j.postharvbio.2025.113897","DOIUrl":"10.1016/j.postharvbio.2025.113897","url":null,"abstract":"<div><div>Root rot caused by <em>Fusarium solani</em> is a serious disease of sweet potato during storage. Antagonistic microorganisms are potential agents that could be used for reducing root rot of sweet potato. <em>Paenibacillus polymyxa</em> PL6 isolated from the surface of sweet potato could suppress mycelial growth and the expression of its related genes <em>FsKIN1</em> and <em>FsDHC1</em>, inhibit cell viability and spore germination of <em>F. solani</em>, lower the expression of <em>FsRas2</em>, <em>FsDHDPS1</em>, <em>FsFVS1</em> and <em>FsFlbA2</em> related to spore germination, and disrupt the integrity of spore membrane<em>.</em> Moreover, it increased the level of reactive oxygen species (ROS), inhibited the activity and gene expression of malate dehydrogenase (MDH) in mitochondria, and reduced the mitochondrial membrane potential (MMP) which led to cell apoptosis. The lesion area of sweet potato inoculated with <em>F. solani</em> was markedly suppressed by spraying with <em>P. polymyxa</em> PL6 fermentation solution, and the activities of chitinase (CHI), β-1,3-glucanase (GNS), phenylalnine ammonialyase (PAL) and lipoxygenase (LOX), as well as the expression level of pathogenesis related protein 1 gene (<em>IbPR1</em>) were enhanced significantly. Three metabolic substances in <em>P. polymyxa</em> PL6 fermentation solution including phenyllactic acid, ethyl maltol and D-2-aminobutyric acid were identified by non-targeted metabolomics, which collectively had strong antagonistic activity against <em>F. solani</em> and sweet potato root rot. The results not only provide a candidate biological control bacterium but also propose potential antifungal compounds for effectively suppressing the occurrence of root rot.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"231 ","pages":"Article 113897"},"PeriodicalIF":6.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new method of detecting sub-healthy pear with brown core: Vibro-acoustic signals decomposition and reconstruction","authors":"He Li ,&nbsp;Youfang Yu ,&nbsp;Mingcan Zhai ,&nbsp;Xiaoming Mo ,&nbsp;Jie Wu ,&nbsp;Zhihua Zha","doi":"10.1016/j.postharvbio.2025.113905","DOIUrl":"10.1016/j.postharvbio.2025.113905","url":null,"abstract":"<div><div>The pears with browning regions not exceeding the core line are called sub-healthy fruit. They still keep normal commodity value but have the risk of flesh disorder. The identification of sub-healthy pears is beneficial for improving pear commodity rates and protecting the fruit reputation from being tarnished. When the vibro-acoustic approach is employed for this detecting task, the signals of sub-healthy pears are little different from those of healthy and slightly diseased pears. Therefore, accurately identifying sub-healthy pears is rather challenging. In this study, we propose an improved local mean decomposition (LMD) algorithm suitable for the attenuation characteristics of pear vibro-acoustic signals. The new algorithm was used to break down the pear signal into a series of components to unveil hidden features. Then, the sensitive components were selected to reconstruct the signal for ResNet50–1D to extract depth features as SVM inputs. We have confirmed that the signal LMD plays a pivotal role in greatly increasing the classification performance of the model. Furthermore, the 28 positive features were found through SHapley Additive exPlanation analysis to generate the interpretable model. The classification performance of this model only increased by 4 % or so. We have selected seven principal positive features that contributed to an 80.5 % increment for enhancing model classification accuracy. With these features accounting for 25 % of all positive features, the interpretable model can achieve the accuracy of 91.28 %, <em>F</em>₁ score of 91.26 %, Kappa coefficient of 89.33 %, and Matthews correlation coefficient of 87.01 % in external validation although the classification performance is slightly reduced. Consequently, the seven principal positive features are enough to help the ResNet50–1D-SVM model detect the sub-healthy pears with better performance.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"231 ","pages":"Article 113905"},"PeriodicalIF":6.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mandarin essential oil-flavoured bio-based active packaging for quality preservation and fungal control in fresh produce","authors":"Prangthip Parichanon ,&nbsp;Marco Santin ,&nbsp;Marwa Khemakhem ,&nbsp;Thierry Falher ,&nbsp;Arianna Petrucci ,&nbsp;Diego Mencarini ,&nbsp;Sabrina Sarrocco ,&nbsp;Barbara Conti ,&nbsp;Antonella Castagna","doi":"10.1016/j.postharvbio.2025.113906","DOIUrl":"10.1016/j.postharvbio.2025.113906","url":null,"abstract":"<div><div>Chitosan (CHT), a natural biopolymer with excellent film-forming and antimicrobial properties, was incorporated with mandarin essential oil (MEO, 2 %) and combined with fully biodegradable matrices such as polylactic acid (PLA) and poly(butylene succinate-co-adipate) (PBSA) to develop novel active packaging materials - including trays for strawberries and sachets for tomatoes. This work pioneers the integration of high molecular weight CHT and MEO into PLA and PBSA matrices, generating dual-function packaging that combines natural antimicrobial activity with fruit quality preservation. The combination of CHT and MEO with bio-based matrices demonstrated strong antibacterial activity, with PBSA/CHT/MEO films achieving 100 % inhibition of <em>Escherichia coli</em> and up to 97 % inhibition of <em>Staphylococcus aureus</em>. The developed packaging also helped maintain most primary quality parameters of the packaged fruit - such as firmness, total soluble solids, titratable acidity, and sugar-acid ratio -throughout storage, with only minor differences observed under certain conditions. While no significant increases in carotenoid or antioxidant contents were observed in tomatoes stored with active packaging, the films exhibited balanced water vapor transmission rates (1.65 × 10⁻⁴ ± 0.05 kg·m⁻²·s⁻¹), contributing to overall fruit preservation. Additionally, qualitative observations indicated fewer visible lesions of <em>Botrytis cinerea</em> in both strawberries and tomatoes stored with the active packaging, although this was not quantified. This additive-enriched, fully biodegradable packaging aligns with global sustainability goals by offering a promising solution for reducing food loss and promoting a circular bioeconomy in the agri-food sector.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"231 ","pages":"Article 113906"},"PeriodicalIF":6.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Induction of systemic resistance by β-aminobutyric acid in sweet bell pepper fruit reduces chilling injury and Alternaria fungal decay","authors":"Kianoush Barari ,&nbsp;Meisam Mohammadi ,&nbsp;Mohammad-Ebrahim Ranjbar ,&nbsp;Fardin Ghanbari","doi":"10.1016/j.postharvbio.2025.113900","DOIUrl":"10.1016/j.postharvbio.2025.113900","url":null,"abstract":"<div><div>Sweet bell pepper, due to its tropical origin, is highly susceptible to chilling injury (CI), fungal decay, and quality deterioration during cold storage. Recently, the use of environmentally friendly and low-risk compounds has emerged as a promising approach to mitigate postharvest fungal decay and CI. This study aimed to evaluate the effects of preharvest application of β-aminobutyric acid (BABA) on the control of <em>Alternaria alternata</em> (Fr.) Keissl fungal decay (AFD) and CI in ‘California Wonder’pepper fruit during storage. For this purpose, an experiment was conducted from 2022 to 2024, with preharvest sprays of BABA at concentrations of 0, 5, 10, 15, and 20 mM. Treated fruit were stored at 3 °C with 80–85 % relative humidity and assessed for various quality attributes at harvest (0 d) and after 10, 20, and 30 d of storage. The results showed that CI severity and AFD increased over time, while fruit quality declined. However, BABA treatments maintained postharvest fruit quality. Notably, the 15 mM BABA treatment extended shelf life by 38 % (10 d) and reduced CI and AFD by 51 % and 62 %, respectively, compared to the control. Throughout storage, the 15 mM BABA treatment reduced weight loss, electrolyte leakage, hydrogen peroxide, proline, malondialdehyde, phospholipase D, lipoxygenase, glutamate decarboxylase activity, and γ-aminobutyric acid (GABA) content. Moreover, this treatment preserved fruit firmness, titratable acidity, total soluble solids, ascorbic acid, total protein content, and the activities of antioxidant enzymes, including ascorbate peroxidase, guaiacol peroxidase, catalase, superoxide dismutase, and GABA transaminase. These findings demonstrate that preharvest BABA application enhances both the quantitative and qualitative attributes of sweet bell pepper fruit, thereby extending shelf life and reducing losses caused by CI and AFD. The improved antioxidant defense, regulation of GABA biosynthesis, and the potential antimicrobial action of BABA through cell wall fortification are likely key mechanisms contributing to its effectiveness.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"231 ","pages":"Article 113900"},"PeriodicalIF":6.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145045017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preharvest melatonin application enhances soft rot resistance in kiwifruit through the jasmonic acid signaling pathway","authors":"Junsen Peng ,&nbsp;Shufeng Du ,&nbsp;Rong Fan ,&nbsp;Youhua Long ,&nbsp;Guofang Xie ,&nbsp;Xiaochun Ding ,&nbsp;Xiaoqing Dong","doi":"10.1016/j.postharvbio.2025.113880","DOIUrl":"10.1016/j.postharvbio.2025.113880","url":null,"abstract":"<div><div>Soft rot commonly develops in kiwifruit after ripening. The mechanism of preharvest melatonin treatment-induced resistance to soft rot is unclear. This study examines the effects of preharvest melatonin on kiwifruit’s resistance to soft rot. Results showed that two consecutive years of melatonin application reduced soft rot incidence from 57 % to 37 % during room temperature storage, lowering its occurrence. Melatonin inhibits cell wall-degrading enzymes and enhances key enzymes in phenylpropanoid metabolism, leading to increased accumulation of secondary metabolites and structural resistance. Transcriptome analysis indicated that preharvest melatonin activated plant hormone signal transduction, MAPK signaling pathways, and plant-pathogen interactions. Treatment with melatonin receptor inhibitor (Luzindole) illustrated that blocking melatonin signaling decreased jasmonic acid (JA) levels while increasing salicylic acid levels in kiwifruit inoculated with <em>Botryosphaeria dothidea</em>. Thus, melatonin-mediated plant hormone signaling likely depends on the JA pathway.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"231 ","pages":"Article 113880"},"PeriodicalIF":6.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145026957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}