Postharvest Biology and Technology最新文献

{"title":"Natamycin and potassium sorbate synergistically enhance resistance to Botrytis cinerea by activating the phenylpropanoid metabolism in harvested strawberry","authors":"Xiang Zhang ,&nbsp;Li Wang ,&nbsp;Yue-yan Chen,&nbsp;Yao Dai,&nbsp;Mei-qing Li,&nbsp;Hai-wei Zhang","doi":"10.1016/j.postharvbio.2024.113361","DOIUrl":"10.1016/j.postharvbio.2024.113361","url":null,"abstract":"<div><div>Gray mold, caused by <em>Botrytis cinerea</em>, is a prominent postharvest disease that significantly diminishes the commercial value of strawberries. This study aimed to reveal the effects and potential mechanism of collaborative treatment with natamycin and potassium sorbate (S_NPS) on enhancing gray mold resistance by regulating phenylpropanoid metabolism in strawberry fruit. All strawberries were first inoculated with a suspension of <em>B. cinerea</em> conidia, air dried and then the two experimental groups received injections of 10 μL S_NPS (1 of minimal inhibitory concentration, MIC) and S_NPS (3 of MIC) respectively, with distilled water as control. Strawberries treated with S_NPS exhibited a significant reduction of 70 % and 50 % in disease incidence and lesion diameter after 3 days, respectively, compared to untreated samples. S_NPS treatment also inhibited weight loss, and maintained high hardness and the contents of total soluble solids, anthocyanin and ascorbic acid. S_NPS treatment activated Phenylalanine Ammonia-lyase, cinnamic acid-4-hydroxylase and 4-coumaric acid- CoA ligase, and also promoted the accumulation of total phenols, total flavonoids, and lignin. Moreover, strawberry fruit treated with S_NPS inducer the accumulation of disease-course related proteins compared to the control. S_NPS treatment effectively inhibit gray mold infection in strawberries by activating the phenylpropanoid metabolism pathways and disease process-related protein accumulation.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"222 ","pages":"Article 113361"},"PeriodicalIF":6.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092669","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":"VvABF5 promotes ABA-mediated chlorophyll degradation by transcriptional activation of VvSGR during rachis browning of grape","authors":"Zhiqian Li ,&nbsp;Dongfang Zou ,&nbsp;Changjiang Nie ,&nbsp;Xing Chen ,&nbsp;Chang He ,&nbsp;Xianbo Zheng ,&nbsp;Bin Tan ,&nbsp;Jun Cheng ,&nbsp;Wei Wang ,&nbsp;Pedro Martínez Gómez ,&nbsp;Xia Ye ,&nbsp;Jiancan Feng","doi":"10.1016/j.postharvbio.2024.113363","DOIUrl":"10.1016/j.postharvbio.2024.113363","url":null,"abstract":"<div><div>Rachis browning is a vital problem during postharvest storage of grape, and chlorophyll degradation is a main aspect of rachis browning. Uncovering the molecular mechanisms controlling the rachis browning process is essential to providing high quality grapes to the market. During rachis browning, the content of ABA increased, and treatment with nordihydroguaiaretic acid (NDGA) inhibited while treatment with ABA enhanced this process. A gene encoding a Stay-green protein (<em>VvSGR</em>) was highly expressed during rachis browning, and its overexpression in <em>Arabidopsis</em> and tobacco accelerated chlorophyll degradation, which suggests that <em>VvSGR</em> plays an important role in chlorophyll degradation. Yeast one-hybrid (Y1H), Dual-luciferase (Dual-LUC) and EMSA assays revealed that the transcription factor <em>VvABF5</em> positively regulated expression of <em>VvSGR</em> by binding to a TCGT sequence in its promoter. Transient overexpression of <em>VvABF5</em> in grape leaves resulted in a yellow phenotype and chlorophyll degradation. With overexpression of <em>VvABF5</em>, the expression of <em>VvSGR</em> was increased. Collectively, our findings revealed the ABA-responsive <em>VvABF5</em>-<em>VvSGR</em> module that regulates chlorophyll catabolism and the molecular mechanism underpinning rachis browning in grape.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"222 ","pages":"Article 113363"},"PeriodicalIF":6.4,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092668","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":"Utilizing RGB imaging and machine learning for freshness level determination of green bell pepper (Capsicum annuum L.) throughout its shelf-life","authors":"Danial Fatchurrahman ,&nbsp;Maulidia Hilaili ,&nbsp;Nurwahyuningsih ,&nbsp;Lucia Russo ,&nbsp;Mahirah Binti Jahari ,&nbsp;Ayoub Fathi-Najafabadi","doi":"10.1016/j.postharvbio.2024.113359","DOIUrl":"10.1016/j.postharvbio.2024.113359","url":null,"abstract":"<div><div>This study investigates the sensory qualities, weight loss and texture changes in green bell peppers as indicator of freshness during storage. It assesses the feasibility of using machine learning methods to monitor freshness changes in the commercial variety ‘<em>Kyohikari</em>’ over a 16-d storage period at + 5 °C and 95 % relative humidity (RH). Throughout the storage period, the commercial variety of green bell peppers were stored, and RGB images were captured using a DSLR camera. Sensory assessments and measurements of texture, weight loss, chlorophyll, and carotenoids were conducted at various inteval. Several machine learning approaches- including logistic regression, neural networks, random forests, k-nearest neighbors, and support vector machines, were employed to develop classification and prediction models for fruit freshness during storage intervals of 0, 4, 6, 8, 10, 12, 14, and 16 d. The results indicate that hue angle and chlorophyll content remained unchanged throughout the experiment. However, after 10 d of storage, a 3 % weight loss was observed, accompanied by the detection of off-odors and off-flavors, marking the limit of marketability. The models demonstrated exceptional accuracy in classifying and predicting the freshness of green bell peppers on the storage day, achieving 100 % accuracy with the neural network algorithm.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"222 ","pages":"Article 113359"},"PeriodicalIF":6.4,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143101803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of IpSAG12 in regulating florescence and senescence of cut Itoh peony flowers","authors":"Tian Shi ,&nbsp;Shenshen Shang ,&nbsp;Linting Fan ,&nbsp;Shuang Zhou ,&nbsp;Shuangcheng Gao ,&nbsp;Muhammad Shaaban ,&nbsp;Bingyou Fan ,&nbsp;Guoan Shi ,&nbsp;Zheng Wang","doi":"10.1016/j.postharvbio.2024.113352","DOIUrl":"10.1016/j.postharvbio.2024.113352","url":null,"abstract":"<div><div>Senescence-associated genes (<em>SAGs</em>) play a crucial role in regulating organ senescence in plant growth and development. However, their specific role in the florescence and senescence processes of cut peony flowers, particularly Itoh peonies, remains largely unclear. This study employed transcriptome analysis to investigate the expression patterns of <em>IpSAG</em> genes during the florescence and senescence of cut Itoh peony flowers in vases. Additionally, the function of <em>IpSAG12</em> was examined using virus-induced gene silencing (VIGS) via vacuum infiltration to elucidate its role. The findings revealed that the opening and senescence of cut Itoh peonies in vases progress through three stages: early opening, middle transition, and later senescence. Notably, ethylene release followed a specific pattern, increasing sharply at the onset of flowering, then declining quickly during the early opening stage, displaying an ethylene-climacteric trait. Furthermore, the expression of the senescence-associated gene <em>IpSAG12</em> was minimal during the opening and transition stages but significantly increased by 27.5 times during the senescence stage. Silencing <em>IpSAG12</em> using VIGS extended the vase life of cut flowers by approximately 12 hours. This intervention resulted in a reduced electrolyte leakage rate, lower malondialdehyde (MDA) content, decreased ethylene release rate, reduced activity of 1-aminocyclopropane-1-carboxylic acid oxidase 1 (ACO1), and lower expression of <em>IpACS1</em> and <em>IpACO1</em> compared to the TRV control group. Conversely, the soluble protein content significantly increased in petals of the TRV-<em>IpSAG12</em> group. Collectively, these findings suggest that <em>IpSAG12</em> is a critical target gene in the ethylene signaling pathway that governs petal senescence in Itoh peonies.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"222 ","pages":"Article 113352"},"PeriodicalIF":6.4,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143101858","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":"How do plums ripen in two weather different years? A deep insight into the metabolomic profile","authors":"Aleksandra Korićanac ,&nbsp;Dragan Milatović ,&nbsp;Branko Popović ,&nbsp;Jelena Tomić ,&nbsp;Olga Mitrović ,&nbsp;Ivana Glišić ,&nbsp;Marijana Pešaković ,&nbsp;Denis Rusjan ,&nbsp;Robert Veberic ,&nbsp;Tina Smrke ,&nbsp;Mariana C. Grohar ,&nbsp;Jerneja Jakopic","doi":"10.1016/j.postharvbio.2024.113362","DOIUrl":"10.1016/j.postharvbio.2024.113362","url":null,"abstract":"<div><div>The aim of this study was to analyse the ripening process of two European plum cultivars, ‘Nada’ and ‘Stanley’. As the effects of climate change are becoming increasingly evident, plum producers are facing new challenges. Therefore, the study was conducted in two consecutive years (2021 and 2022) characterised by different weather conditions during the ripening of the plum fruit. The first harvest was performed when 70 % of the fruit surface was covered with cultivar characteristic colour, while the last sampling date coincided with fruit drop. In addition to the basic fruit quality parameters (fruit weight, firmness, total soluble solids), 35 primary and secondary metabolites (sugars, organic acids and phenolics) were identified and quantified by HPLC analysis. Certain trends such as the decrease in fruit firmness, the accumulation of sucrose and anthocyanins and the degradation of malate, were observed during the ripening of two cultivars studied. No clear trend was observed for hydroxycinnamic acids, flavonols, flavanols and flavanones, although the most dominant phenolic compound in all ripening stages was 3-caffeoylquinic acid. Principal component analysis showed that ripening was largely cultivar-dependent and that the behaviour of the same cultivar differed between growing seasons. It was found that heat waves in combination with drought periods accelerated the ripening process, which had a particular effect on the softening rate.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"222 ","pages":"Article 113362"},"PeriodicalIF":6.4,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092667","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":"Biocontrol potential of Streptomyces albidoflavus SC-3 on kiwifruit soft rot caused by Botryosphaeria dothidea","authors":"Jiling Ma ,&nbsp;Youhua Long ,&nbsp;Weizhen Wang ,&nbsp;Wenzhi Li ,&nbsp;Xuetang Chen ,&nbsp;Bingce Wang ,&nbsp;Zhuzhu Zhang ,&nbsp;Feixu Mo ,&nbsp;Lu Yang ,&nbsp;Hujun Qin ,&nbsp;Xianhui Yin","doi":"10.1016/j.postharvbio.2024.113344","DOIUrl":"10.1016/j.postharvbio.2024.113344","url":null,"abstract":"<div><div>Kiwifruit soft rot is a disease caused by fungal pathogens such as <em>Botryosphaeria dothidea,</em> which considerably restricts the development of kiwifruit industry. To provide novel management strategies against kiwifruit soft rot disease, potential biocontrol actinomycete strains were isolated from kiwifruit rhizosphere soil. A total of 21 actinomycete strains were obtained and strain SC-3 exhibited the highest biocontrol activity against <em>B. dothidea</em>. Based on the morphological, biochemical and molecular characteristics strain SC-3 was identified as <em>Streptomyces albidoflavus</em>. The SC-3 and its aseptic filtrate (AF) exhibited excellent antifungal activities against 11 tested pathogenic fungi. AF displayed antifungal effects through suppressing mycelial growth, spore germination, and the pathogenicity of <em>B. dothidea</em>. Electron microscopy analysis revealed that AF could cause significant alterations on ultrastructure of <em>B. dothidea</em>. Moreover, AF severely damaged cell membrane integrity, resulting in the leakage of cellular components in <em>B. dothidea</em>. Metabolomic analyses of SC-3 AF revealed the presence of several important antifungal compounds in the AF such as antimycin, and candicidin. Correspondingly, the whole genome analyses of SC-3 identified gene clusters responsible for the biosynthesis of these compounds. Overall, SC-3 is a potential biological control agent against <em>B. dothidea</em> and other fungal phytopathogens.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"222 ","pages":"Article 113344"},"PeriodicalIF":6.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092665","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":"Bitter almond gum-fish gelatin conjugate coatings extend the storage of button mushrooms","authors":"Chamran Moradi ,&nbsp;Ebrahim Hosseini ,&nbsp;Esmat Rousta","doi":"10.1016/j.postharvbio.2024.113356","DOIUrl":"10.1016/j.postharvbio.2024.113356","url":null,"abstract":"<div><div>Button mushrooms (<em>Agaricus bisporus</em>) have a short shelf-life due to high moisture content and lack of a protective layer, leading to browning and softening. This study aimed to investigate the effects of spraying different concentrations (1 %, 2 %, and 3 % w/v) of bitter almond gum: fish gelatin conjugate coating on the quality of fresh mushrooms during 20 d of cold storage. The results showed that the spray-coated samples maintained better quality parameters than uncoated samples during storage. SEM micrographs confirmed formation coating on the surface of mushrooms and improvement in the microstructure. Mushrooms treated with 2 % conjugate showed considerable improvement in firmness retention, reduced browning, and sensory indices. At the same time, mushrooms coated with 3 % conjugate effectively retained phenolic content, DPPH radical scavenging, and enzyme activities. Lower microbial counts were observed in proportion to coating concentrations. The principal component and hierarchical cluster analyses were conducted to illustrate the effects of variable and conjugate concentration on extending the shelf-life of mushrooms and categorize the samples based on their performance. This study suggests that using conjugate coating can be a practical solution for prolonging the shelf life of button mushrooms and may also be beneficial for improving the post-harvest quality of other fruits and vegetables.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"222 ","pages":"Article 113356"},"PeriodicalIF":6.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092666","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":"Enhancing quality and shelf life of fresh-cut Paprika (Capsicum annuum L.) using insulated packaging with ice packs","authors":"Jiwoon Park ,&nbsp;Seon-Min Oh ,&nbsp;Min Kyung Park ,&nbsp;Jong-Dae Park ,&nbsp;Jae Hwan Ahn ,&nbsp;Jung Min Sung","doi":"10.1016/j.postharvbio.2024.113360","DOIUrl":"10.1016/j.postharvbio.2024.113360","url":null,"abstract":"<div><div>Maintaining the quality of fresh-cut produce during transport is crucial in the rapidly expanding e-grocery market. The present study investigates how varying quantities of ice packs in delivery boxes affect the preservation of fresh-cut paprika (<em>Capsicum annuum</em> L.) under simulated high-temperature conditions. We monitored several key quality indicators—temperature profile, appearance, weight loss, color, firmness, microbial growth, antioxidant activity, and volatile metabolite profile—of fresh-cut paprika stored in expanded polystyrene (EPS) containers at 30 °C over 48 h. The results demonstrated that with no ice packs, internal temperatures rapidly reached the external temperature within 6 h, which rapidly degraded the quality. In contrast, using ice packs significantly decelerated temperature increases, with two ice packs exhibiting the least overall quality decline. These samples exhibited substantially lower weight loss (&lt;10 %) than those devoid of ice packs (26.3 %), alongside better color and firmness retention, and microbial counts remaining below the safety threshold of 5 log CFU g⁻¹ for up to ¹2 h. Additionally, ice packs delayed changes in volatile metabolite profile, thereby preserving desirable flavors. This study provides empirical evidence of the effectiveness of ice packs in ensuring the safety and quality of fresh-cut paprika during deliveries, contributing insights into effective distribution strategies for perishable products.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"222 ","pages":"Article 113360"},"PeriodicalIF":6.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092651","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":"Ester content of blueberry fruit can be ruled by tailored controlled atmosphere storage management","authors":"Farneti Brian ,&nbsp;Khomenko Iuliia ,&nbsp;Ajelli Matteo ,&nbsp;Degasperi Marta ,&nbsp;Betta Emanuela ,&nbsp;Biasioli Franco ,&nbsp;Giongo Lara","doi":"10.1016/j.postharvbio.2024.113355","DOIUrl":"10.1016/j.postharvbio.2024.113355","url":null,"abstract":"<div><div>This study examines the effects of controlled atmosphere (CA) storage with high CO2 concentration (16 KPa) on the volatile organic compound (VOC) profile of blueberries (<em>Vaccinium</em> spp.), considering their genetic variability. The research focuses on the <em>denovo</em> production of esters and their association with fermentation related VOCs, employing complementary analytical techniques for comprehensive VOC profiling: direct injection mass spectrometry using Proton Transfer Reaction - Time of Flight - Mass Spectrometry (PTR-ToF-MS) and gas chromatography utilizing Solid-phase microextraction coupled to gas chromatography-mass spectrometry (SPME/GC-MS).</div><div>In the first experiment, PTR-ToF-MS and SPME/GC-MS were applied to analyze the volatilome of seven blueberry cultivars under regular (RA) and controlled (CA) atmosphere storage conditions for 42 days. In the second experiment, 39 cultivars were tested to evaluate genetic variability in response to CA storage using PTR-ToF-MS. The third experiment focused on the effect of different oxygen concentrations during storage (1, 7, and 12 kPa O2), studying four cultivars using PTR-ToF-MS.</div></div><div><h3>Results</h3><div>of the three experiments revealed high variability among <em>Vaccinium</em> genotypes for all quality traits, which was amplified during storage, particularly under modified atmosphere conditions. CA storage generally enhanced the positive effects of cold storage by reducing texture decay and water loss and improving VOC profiles. Several ester compounds were synthesized <em>de novo</em> under low oxygen conditions, possibly as a response to hypoxic stress.</div><div>The study concludes that CA storage offers potential to enhance postharvest fruit quality beyond shelf-life extension. The increase in fruity ester compounds during storage may improve blueberries' organoleptic properties. However, the variability in responses among cultivars needs tailored storage protocols. This research provides valuable insights for market segmentation and breeding programs aimed at enhancing blueberry quality and storability, while also validating PTR-ToF-MS as a rapid phenotyping tool for blueberry assessment.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"222 ","pages":"Article 113355"},"PeriodicalIF":6.4,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gibberellin and shikimic acid enhance ascorbic acid accumulation and ROS scavenging ability to delay the senescence of postharvest jujube fruit","authors":"Kangning Jiang ,&nbsp;Xiaohuan Zhang ,&nbsp;Tianyu Li ,&nbsp;Jiaqi Liu ,&nbsp;Mengjun Liu ,&nbsp;Shoukun Han","doi":"10.1016/j.postharvbio.2024.113340","DOIUrl":"10.1016/j.postharvbio.2024.113340","url":null,"abstract":"<div><div>Fresh jujube fruit is challenging to store long-term. This study investigated the effects of gibberellin (GA) and shikimic acid (ShA) on the senescence and ascorbic acid (AsA) metabolism of postharvest jujube fruit. The results showed that treatments with 10 mg L⁻¹ GA₃ and 30 mg L⁻¹ ShA inhibited the red-turning of jujube fruit, suggesting a key role in delaying the senescence of jujube fruit during storage. Notably, both GA₃ and ShA treatments preferably maintained higher levels of AsA, total ascorbic acid (T-AsA), total phenolics, and total flavonoids compared to the control, attributed to enhanced GalLDH activity and suppressed APX and AAO activities, along with alterations in the expression of relevant genes. Additionally, the exogenous application of GA₃ and ShA effectively reduced H₂O₂ accumulation and O₂^•− production rate to varying extents while restraining MDA accumulation. Furthermore, GA₃ and ShA treatments enhanced the activity of antioxidant enzymes, such as POD and SOD, yet inhibited CAT activity. In summary, GA₃ and ShA treatments are vital in delaying the senescence of postharvest jujube fruit, which can raise the fruit’s overall antioxidant level through increased AsA content and partial antioxidant enzyme activity.</div></div>","PeriodicalId":20328,"journal":{"name":"Postharvest Biology and Technology","volume":"222 ","pages":"Article 113340"},"PeriodicalIF":6.4,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127980","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}