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Zhou JJ, Zhang X, Yu CY, Sun PP, Ren YY. Structural characteristics of cell wall pectic polysaccharides from wampee and their decreased binding with pectinase by wampee polyphenol. Food Chem 2024; 459:140438. [PMID: 39024878 DOI: 10.1016/j.foodchem.2024.140438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 07/09/2024] [Accepted: 07/10/2024] [Indexed: 07/20/2024]
Abstract
To investigate the structural characteristics of cell wall pectic polysaccharides from wampee, water soluble pectin (WSP), chelator-soluble pectin (CSP) and sodium carbonate-soluble pectin (SSP) were purified. And the inhibitory effects of wampee polyphenol (WPP) on pectinase when these cell wall pectic polysaccharides were used as substrates were also explored. Purified WSP (namely PWSP) had the lowest molecular weight (8.47 × 105 Da) and the highest GalA content (33.43%). While purified CSP (called PCSP) and SSP contained more abundant rhamnogalacturonan I side chains. All of them were low-methoxy pectin (DE < 50%). Enzyme activity and kinetics analysis showed that the inhibition of pectinase by wampee polyphenol was reversible and mixed type. When SSP was used as the substrate, WPP had the strongest inhibition (IC50 = 1.96 ± 0.06 mg/mL) on pectinase. Fluorescence quenching results indicated that WPP inhibited enzyme activity by interacting with substrates and enzymes. Therefore, WPP has the application potential in controlling softening of fruits and vegetables.
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Affiliation(s)
- Jue-Jun Zhou
- College of Life Science, Yangtze University, Jingzhou, Hubei 434023, PR China
| | - Xu Zhang
- College of Life Science, Yangtze University, Jingzhou, Hubei 434023, PR China
| | - Chong-Yang Yu
- College of Life Science, Yangtze University, Jingzhou, Hubei 434023, PR China
| | - Peng-Peng Sun
- College of Life Science, Yangtze University, Jingzhou, Hubei 434023, PR China
| | - Yuan-Yuan Ren
- College of Life Science, Yangtze University, Jingzhou, Hubei 434023, PR China.
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2
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Wang JH, Sun Q, Ma CN, Wei MM, Wang CK, Zhao YW, Wang WY, Hu DG. MdWRKY31-MdNAC7 regulatory network: orchestrating fruit softening by modulating cell wall-modifying enzyme MdXTH2 in response to ethylene signalling. PLANT BIOTECHNOLOGY JOURNAL 2024. [PMID: 39180170 DOI: 10.1111/pbi.14445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 07/02/2024] [Accepted: 07/23/2024] [Indexed: 08/26/2024]
Abstract
Softening in fruit adversely impacts their edible quality and commercial value, leading to substantial economic losses during fruit ripening, long-term storage, long-distance transportation, and marketing. As the apple fruit demonstrates climacteric respiration, its firmness decreases with increasing ethylene release rate during fruit ripening and postharvest storage. However, the molecular mechanisms underlying ethylene-mediated regulation of fruit softening in apple remain poorly understood. In this study, we identified a WRKY transcription factor (TF) MdWRKY31, which is repressed by ethylene treatment. Using transgenic approaches, we found that overexpression of MdWRKY31 delays softening by negatively regulating xyloglucan endotransglucosylase/hydrolases 2 (MdXTH2) expression. Yeast one-hybrid (Y1H), electrophoretic mobility shift (EMSA), and dual-luciferase assays further suggested that MdWRKY31 directly binds to the MdXTH2 promoter via a W-box element and represses its transcription. Transient overexpression of ethylene-induced MdNAC7, a NAC TF, in apple fruit promoted softening by decreasing cellulose content and increasing water-soluble pectin content in fruit. MdNAC7 interacted with MdWRKY31 to form a protein complex, and their interaction decreased the transcriptional repression of MdWRKY31 on MdXTH2. Furthermore, MdNAC7 does not directly regulate MdXTH2 expression, but the protein complex formed with MdWRKY31 hinders MdWRKY31 from binding to the promoter of MdXTH2. Our findings underscore the significance of the regulatory complex NAC7-WRKY31 in ethylene-responsive signalling, connecting the ethylene signal to XTH2 expression to promote fruit softening. This sheds light on the intricate mechanisms governing apple fruit firmness and opens avenues for enhancing fruit quality and reducing economic losses associated with softening.
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Affiliation(s)
- Jia-Hui Wang
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
- College of Horticulture, Agricultural University of Hebei, Baoding, Hebei, China
| | - Quan Sun
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Chang-Ning Ma
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Meng-Meng Wei
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Chu-Kun Wang
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Yu-Wen Zhao
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Wen-Yan Wang
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Da-Gang Hu
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
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3
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Yang M, He C, Hou G, She M, Zhao M, Hu R, Xiao W, Yu H, Lin Y, Zhang Y, Wang Y, He W, Li M, Chen Q, Zhang Y, Wang X, Tang H, Luo Y. Combining transcriptomics and HPLC to uncover variations in quality formation between 'Benihoppe' and 'Fenyu No.1' strawberries. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 215:109043. [PMID: 39181084 DOI: 10.1016/j.plaphy.2024.109043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 08/05/2024] [Accepted: 08/11/2024] [Indexed: 08/27/2024]
Abstract
'Benihoppe' and 'Fenyu No.1' are representative varieties of red and pink strawberries in China, possess distinct hue and flavor profiles. This study analyzed the underlying biochemical and molecular differences of two varieties utilizing transcriptomics and high-performance liquid chromatography (HPLC). Ripening 'Benihoppe' fruits accumulated more sucrose and pelargonin-3-glucoside (P3G) with a little cyanidin and higher firmness. Whereas ripening 'Fenyu No.1' fruits contained more fructose, glucose, malic acid and ascorbic acid (AsA), but less P3G and citric acid. Moreover, genotype significantly influenced phenolic compounds contents in strawberries. Transcriptome analysis revealed that pectin degradation (PL, PG, PE), sucrose synthesis (CWINV, SUS, TPS) and citric acid metabolism (α-OGDH, ICDH, GAD, GS, GDH, PEPCK, AST) were weakened in 'Benihoppe' fruit. In contrast, the synthesis of sucrose (CWINH, SPS), citric acid (CS, PEPC), anthocyanin (F3H, F3'H, F3'5'H, DFR, UFGT and ANS), and citric acid transport (V-ATPase) was enhanced. In 'Fenyu No.1' fruit, the degradation of sucrose, citric acid, and pectin was enhanced, along with the synthesis of malic acid (ME) and ascorbic acid (PMM, MDHAR and GaLUR). However, anthocyanins synthesis, glucose metabolism (HK, G6PI, PFK, G6PDH, PGK, PGM, ENO, PK), fructose metabolism (FK), citric acid synthesis and transport, and AsA degradation (AO, APX) were relatively weak. RT-qPCR results corroborated the transcriptome data. In conclusion, this study revealed the distinctions and characteristics of strawberries with different fruit colors regarding texture, flavor and color formation processes. These findings offer valuable insights for regulating metabolic pathways and identifying key candidate genes to improve strawberry quality.
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Affiliation(s)
- Min Yang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Caixia He
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Guoyan Hou
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Musha She
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mantong Zhao
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ruixin Hu
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wenfei Xiao
- Hangzhou Academy of Agricultural Sciences, Hangzhou, 310000, China
| | - Hong Yu
- Hangzhou Academy of Agricultural Sciences, Hangzhou, 310000, China
| | - Yuanxiu Lin
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yunting Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wen He
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mengyao Li
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qing Chen
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yong Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiaorong Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Haoru Tang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ya Luo
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China.
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4
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Rahman FU, Zhu Q, Zhang K, Kang X, Wang X, Chen W, Li X, Zhu X. Transcriptome and metabolome analyses provide insights into the fruit softening disorder of papaya fruit under postharvest heat stress. Food Chem 2024; 460:140771. [PMID: 39128369 DOI: 10.1016/j.foodchem.2024.140771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 07/22/2024] [Accepted: 08/03/2024] [Indexed: 08/13/2024]
Abstract
Heat stress in summer causes softening disorder in papaya but the molecular mechanism is not clear. In this study, papaya fruit stored at 35 °C showed a softening disorder termed rubbery texture. Analysis of the transcriptome and metabolome identified numerous differentially expressed genes (DEGs) and differentially accumulated metabolites (DAMs) between the fruit stored at 25 °C and 35 °C. The DEGs and DAMs related to lignin biosynthesis were upregulated, while those related to ethylene biosynthesis, sucrose metabolism, and cell wall degradation were downregulated under heat stress. Co-expression network analysis highlighted the correlation between the DEGs and metabolites associated with lignin biosynthesis, ethylene biosynthesis, and cell wall degradation under heat stress. Finally, the correlation analysis identified the key factors regulating softening disorder under heat stress. The study's findings reveal that heat stress inhibited papaya cell wall degradation and ethylene production, delaying fruit ripening and softening and ultimately resulting in a rubbery texture.
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Affiliation(s)
- Faiz Ur Rahman
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center for Postharvest Technology of Horticultural Crops in South China, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Qiunan Zhu
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center for Postharvest Technology of Horticultural Crops in South China, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Keyuan Zhang
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center for Postharvest Technology of Horticultural Crops in South China, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Xinmiao Kang
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center for Postharvest Technology of Horticultural Crops in South China, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Xiangting Wang
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center for Postharvest Technology of Horticultural Crops in South China, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Weixin Chen
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center for Postharvest Technology of Horticultural Crops in South China, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Xueping Li
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center for Postharvest Technology of Horticultural Crops in South China, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Xiaoyang Zhu
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center for Postharvest Technology of Horticultural Crops in South China, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, 510642, China.
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5
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Cheng J, Li D, Mai Z, Ding Y, Zheng W, Lai C, Dong X, Tong R, Cao Y, Cao Q, Zhou W. In-situ electrospinning PVB/Camellia oil/ZnO-TiO 2 nanofibrous membranes with synergistic antibacterial and degradation of ethylene applied in fruit preservation. Food Chem 2024; 460:140629. [PMID: 39142198 DOI: 10.1016/j.foodchem.2024.140629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/21/2024] [Accepted: 07/23/2024] [Indexed: 08/16/2024]
Abstract
This work utilizes a handheld electrospinning device to prepare a novel nanofibrous composite membrane in situ for packaging freshness. It can realize pick-and-pack and is easy to operate. The nanofibrous membrane is based on PVB as the matrix material, adding Camellia oil (CO) and ZnO-TiO2 composite nanoparticles (ZT) as the active material. The antimicrobial property of the CO and the photocatalytic activity of the nanoparticles give the material good antimicrobial and ethylene degradation functions. Meanwhile, this nanofibrous membrane has good mechanical properties, suitable moisture permeability and good optical properties. The nanofibrous membrane are suitable for both climacteric and non- climacteric fruits. Its use as a cling film extends the shelf life of strawberries by 4 days and significantly slows the ripening of small tomatoes. Therefore, this nanofibrous membrane has great potential for application in the field of fruit preservation.
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Affiliation(s)
- Jieru Cheng
- Key Laboratory of the Ministry of Bio-based Materials and Energy Education, Research Center of Biomass 3D Printing Materials, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China
| | - Dingfan Li
- Key Laboratory of the Ministry of Bio-based Materials and Energy Education, Research Center of Biomass 3D Printing Materials, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China
| | - Zhuoxian Mai
- Key Laboratory of the Ministry of Bio-based Materials and Energy Education, Research Center of Biomass 3D Printing Materials, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China
| | - Yue Ding
- Key Laboratory of the Ministry of Bio-based Materials and Energy Education, Research Center of Biomass 3D Printing Materials, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China
| | - Wenxu Zheng
- Key Laboratory of the Ministry of Bio-based Materials and Energy Education, Research Center of Biomass 3D Printing Materials, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China.
| | - Chen Lai
- Shenzhen Key Laboratory of Human Tissue Regeneration and Repair, PKU-HKUST ShenZhen-HongKong Institution, Shenzhen 518057, PR China
| | - Xianming Dong
- Key Laboratory of the Ministry of Bio-based Materials and Energy Education, Research Center of Biomass 3D Printing Materials, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China
| | - Rongbiao Tong
- College of Science, The Hong Kong University of Science and Technology Hong Kong, PR China
| | - Yong Cao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, PR China
| | - Qingyun Cao
- College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China.
| | - Wuyi Zhou
- Key Laboratory of the Ministry of Bio-based Materials and Energy Education, Research Center of Biomass 3D Printing Materials, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China.
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6
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Mao Y, Dewi SR, Harding SE, Binner E. Influence of ripening stage on the microwave-assisted pectin extraction from banana peels: A feasibility study targeting both the Homogalacturonan and Rhamnogalacturonan-I region. Food Chem 2024; 460:140549. [PMID: 39053277 DOI: 10.1016/j.foodchem.2024.140549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 06/27/2024] [Accepted: 07/18/2024] [Indexed: 07/27/2024]
Abstract
This work investigated a sustainable and efficient approach of pectin extraction for banana peel waste valorisation and studied the influence of banana ripening stages (RS at 2,5 and 7). Although pectin content in banana peel raw material decreased during ripening, pectin extraction was favoured. The highest alcohol-insoluble solids (AIS) yield (12.5%) was achieved at 70 °C, 15 mins from RS 7 peel. All extracts were homogalacturan-rich with some rhamnogalacturonan-I content (showing HGA/RG-I ratio > 2) with varied degree of methylation (DM). The highest HGA content (837.2 mg/g AIS) and HGA/RG-I ratio (9.9) were achieved at 110 °C, 0 mins from RS 7, suggesting its promising application as gelling agent. The highest RG-I content (111.1 mg/g AIS) were obtained at 110 °C, 5 mins from RS 7, which was comparable with the pectin with reported prebiotic ability isolated from the literature, suggesting its potential application in novel products.
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Affiliation(s)
- Yujie Mao
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, University Park campus, Nottingham, NG7 2RD, UK.
| | - Shinta R Dewi
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, University Park campus, Nottingham, NG7 2RD, UK; Department of Bioprocess Engineering, Faculty of Agricultural Technology, Universitas Brawijaya, Malang, 65145, Indonesia.
| | - Stephen E Harding
- National Centre for Macromolecular Hydrodynamics, School of Biosciences, University of Nottingham, Sutton Bonington campus, Loughborough LE12 5RD, UK.
| | - Eleanor Binner
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, University Park campus, Nottingham, NG7 2RD, UK.
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7
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Li S, Zhao Y, Wu P, Grierson D, Gao L. Ripening and rot: How ripening processes influence disease susceptibility in fleshy fruits. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024. [PMID: 39016673 DOI: 10.1111/jipb.13739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 06/24/2024] [Indexed: 07/18/2024]
Abstract
Fleshy fruits become more susceptible to pathogen infection when they ripen; for example, changes in cell wall properties related to softening make it easier for pathogens to infect fruits. The need for high-quality fruit has driven extensive research on improving pathogen resistance in important fruit crops such as tomato (Solanum lycopersicum). In this review, we summarize current progress in understanding how changes in fruit properties during ripening affect infection by pathogens. These changes affect physical barriers that limit pathogen entry, such as the fruit epidermis and its cuticle, along with other defenses that limit pathogen growth, such as preformed and induced defense compounds. The plant immune system also protects ripening fruit by recognizing pathogens and initiating defense responses involving reactive oxygen species production, mitogen-activated protein kinase signaling cascades, and jasmonic acid, salicylic acid, ethylene, and abscisic acid signaling. These phytohormones regulate an intricate web of transcription factors (TFs) that activate resistance mechanisms, including the expression of pathogenesis-related genes. In tomato, ripening regulators, such as RIPENING INHIBITOR and NON_RIPENING, not only regulate ripening but also influence fruit defenses against pathogens. Moreover, members of the ETHYLENE RESPONSE FACTOR (ERF) family play pivotal and distinct roles in ripening and defense, with different members being regulated by different phytohormones. We also discuss the interaction of ripening-related and defense-related TFs with the Mediator transcription complex. As the ripening processes in climacteric and non-climacteric fruits share many similarities, these processes have broad applications across fruiting crops. Further research on the individual contributions of ERFs and other TFs will inform efforts to diminish disease susceptibility in ripe fruit, satisfy the growing demand for high-quality fruit and decrease food waste and related economic losses.
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Affiliation(s)
- Shan Li
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
| | - Yu Zhao
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Pan Wu
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
| | - Donald Grierson
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Lei Gao
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
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8
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Alegbe EO, Uthman TO. A review of history, properties, classification, applications and challenges of natural and synthetic dyes. Heliyon 2024; 10:e33646. [PMID: 39040261 PMCID: PMC11261106 DOI: 10.1016/j.heliyon.2024.e33646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 05/27/2024] [Accepted: 06/25/2024] [Indexed: 07/24/2024] Open
Abstract
Natural dyes have been used for centuries for coloring textiles, food, and other materials. Synthetic dyes are particularly popular due to their ease of use, wide range of available colors, and fastness. However, their usage comes with significant environmental and health challenges. In recent years, there has been a renewed interest in natural dyes due to their eco-friendliness, ready availability, affordability, non-toxicity, and sustainability. Hence, natural dyes are fast gaining popularity as better alternatives to synthetic dyes. Nature is blessed with a rich diversity of plant species with varying colors and properties which can be harnessed in textile, printing, cosmetics, and food industries. This paper presents a comprehensive review on natural and synthetic dyes with particular focus on their history, properties, classification, extraction methods, applications, and health challenges. Although many plants have been suggested as potential sources of natural dyes, there is insufficient information on their exploration and application. Additionally, chemical analyses of these dyes have not been extensively done. Overall, the results of studies conducted so far identified a number of promising taxa for further investigation as plant-based dyes with many indigenous plants as potential sources of natural dyes.
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Affiliation(s)
| | - Taofik Olatunde Uthman
- Department of Biochemistry and Biotechnology, Faculty of Science, Nile University of Nigeria, Abuja, Nigeria
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9
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Zhao M, Hu R, Lin Y, Yang Y, Chen Q, Li M, Zhang Y, Zhang Y, Wang Y, He W, Wang X, Tang H, Luo Y. Genome-Wide Analysis of Polygalacturonase Gene Family Reveals Its Role in Strawberry Softening. PLANTS (BASEL, SWITZERLAND) 2024; 13:1838. [PMID: 38999678 PMCID: PMC11244104 DOI: 10.3390/plants13131838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 06/18/2024] [Accepted: 07/02/2024] [Indexed: 07/14/2024]
Abstract
Fruit softening is a prominent attribute governing both longevity on shelves and commercial worth. Polygalacturonase (PG) plays a major role in strawberry fruit softening. However, the PG gene family in strawberry has not been comprehensively analyzed. In this study, 75 FaPG genes were identified in the octoploid strawberry genome, which were classified into three groups according to phylogenetic analysis. Subcellular localization prediction indicated that FaPGs are mostly localized to the plasma membrane, cytoplasm, and chloroplasts. Moreover, the expression of FaPGs during strawberry development and ripening of 'Benihoppe' and its softer mutant was estimated. The results showed that among all 75 FaPGs, most genes exhibited low expression across developmental stages, while two group c members (FxaC_21g15770 and FxaC_20g05360) and one group b member, FxaC_19g05040, displayed relatively higher and gradual increases in their expression trends during strawberry ripening and softening. FxaC_21g15770 was selected for subsequent silencing to validate its role in strawberry softening due to the fact that it exhibited the highest and most changed expression level across different developmental stages in 'Benihoppe' and its mutant. Silencing FxaC_21g15770 could significantly improve strawberry fruit firmness without affecting fruit color, soluble solids, cellulose, and hemicellulose. Conversely, silencing FxaC_21g15770 could significantly suppress the expression of other genes related to pectin degradation such as FaPG-like, FaPL, FaPME, FaCX, FaCel, FaGlu, FaXET, and FaEG. These findings provide basic information on the FaPG gene family for further functional research and indicate that FxaC_21g15770 plays a vital role in strawberry fruit softening.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Ya Luo
- College of Horticulture, Sichuan Agricultural University, Chengdu 625014, China; (M.Z.); (R.H.); (Y.L.); (Y.Y.); (Q.C.); (M.L.); (Y.Z.); (Y.Z.); (Y.W.); (W.H.); (X.W.); (H.T.)
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10
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Yang DZ, Tang J, Cheng YL, Yang YS, Wei JF, Sun JL, Xu ZQ. Identification and Characterization of Pectate Lyase as a Novel Allergen in Artemisia sieversiana Pollen. Int Arch Allergy Immunol 2024:1-14. [PMID: 38897183 DOI: 10.1159/000539375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 05/14/2024] [Indexed: 06/21/2024] Open
Abstract
INTRODUCTION Artemisia species are widely spread in north hemisphere. Artemisia sieversiana pollen is one of the common pollen allergens in the north of China. At present, seven allergens were identified and had been listed officially from A. sieversiana pollen, but the remaining allergens are still insufficiently studied, which need to be found. METHODS Pectate lyase was purified from the extracts of A. sieversiana pollen by anion exchange, size exclusion, and HPLC-hydrophobic interaction chromatography. The gene of A. sieversiana pectate lyase (Art si pectate lyase) was cloned and expressed in Escherichia coli. The enzyme activity and circular dichroism (CD) spectrum of natural and recombinant proteins were analyzed. The allergenicity of Art si pectate lyase was characterized by enzyme-linked immunosorbent assay (ELISA), Western blot, inhibition ELISA, and basophil activation test. The allergen's physicochemical properties, three-dimensional structure, sequence profiles with homologous allergens and phylogenetic tree were analyzed by in silico methods. RESULTS Natural Art si pectate lyase (nArt si pectate lyase) was purified from A. sieversiana pollen extracts by three chromatographic strategies. The cDNA sequence of Art si pectate lyase had a 1191-bp open reading frame encoding 396 amino acids. Both natural and recombinant pectate lyase (rArt si pectate lyase) exhibited similar CD spectrum, and nArt si pectate lyase had higher enzymatic activity. Moreover, the specific immunoglobulin E (IgE) binding rate against nArt si pectate lyase and rArt si pectate lyase was determined as 40% (6/15) in patients' serum with Artemisia species pollen allergy by ELISA. The nArt si pectate lyase and rArt si pectate lyase could inhibit 76.11% and 47.26% of IgE binding activities to the pollen extracts, respectively. Art si pectate lyase was also confirmed to activate patients' basophils. Its structure contains a predominant motif of classic parallel helical core, consisting of three parallel β-sheets, and two highly conserved features (vWiDH, RxPxxR) which may contribute to pectate lyase activity. Moreover, Art si pectate lyase shared the highest sequence identity of 73.0% with Art v 6 among currently recognized pectate lyase allergen, both were clustered into the same branch in the phylogenetic tree. CONCLUSION In this study, pectate lyase was identified and comprehensively characterized as a novel allergen in A. sieversiana pollen. The findings enriched the allergen information for this pollen and promoted the development of component-resolved diagnosis and molecular therapy of A. sieversiana pollen allergy.
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Affiliation(s)
- De-Zheng Yang
- Department of Pharmacy, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Jian Tang
- Department of Pharmacy, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Ya-Li Cheng
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Yong-Shi Yang
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Ji-Fu Wei
- Department of Pharmacy, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
- Research Division of Clinical Pharmacology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- National Vaccine Innovation Platform, Nanjing Medical University, Nanjing, China
| | - Jin-Lyu Sun
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Zhi-Qiang Xu
- Research Division of Clinical Pharmacology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- National Vaccine Innovation Platform, Nanjing Medical University, Nanjing, China
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11
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Wang L, Liu M, Luo Z, Chen Y, Qi Y, Ye M, Chen F, Dai F. Effect of modified atmosphere package on attributes of sweet bamboo shoots after harvest. FRONTIERS IN PLANT SCIENCE 2024; 15:1431097. [PMID: 38947949 PMCID: PMC11212469 DOI: 10.3389/fpls.2024.1431097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Accepted: 05/30/2024] [Indexed: 07/02/2024]
Abstract
Tender bamboo shoots undergo rapid senescence that influences their quality and commercial value after harvest. In this study, the tender sweet bamboo shoots ('Wensun') were packed by a passive modified atmosphere packaging (PMAP) to inhibit the senescence process, taking polyethylene package as control. The increase in CO2 and the decrease in O2 gas concentrations in the headspace atmosphere of the packages were remarkably modified by PMAP treatments. The modified gas atmosphere packaging inhibited the changes in firmness, as well as the content of cellulose, total pectin, and lignin in the cell walls of bamboo shoots. The enzymatic activities of cellulase, pectinase, and polygalacturonase that act on cell wall polysaccharides, and phenylalanine ammonia lyase, cinnamyl alcohol dehydrogenase, peroxidase, and laccase regulating the lignin biosynthesis were modified by PMAP treatment different from control during storage. The expression levels of the lignin biosynthesis genes PePAL3/4, PeCAD, Pe4CL5, PeC4H, PeCCOAOMT, PeCOMT, cellulose synthase PeCESA1, and related transcription factors PeSND2, PeKNAT7, PeMYB20, PeMYB63, and PeMYB85 were clearly regulated. These results suggest that PMAP efficiently retards the changes in lignin and cell wall polysaccharides, thus delaying the senescence of tender sweet bamboo shoots during storage.
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Affiliation(s)
- Ling Wang
- Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, China
| | | | | | | | | | | | | | - Fanwei Dai
- Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, China
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12
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Qi X, Dong Y, Liu C, Song L, Chen L, Li M. A 5.2-kb insertion in the coding sequence of PavSCPL, a serine carboxypeptidase-like enhances fruit firmness in Prunus avium. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:1622-1635. [PMID: 38415985 PMCID: PMC11123409 DOI: 10.1111/pbi.14291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/28/2023] [Accepted: 01/08/2024] [Indexed: 02/29/2024]
Abstract
Fruit firmness is an important trait in sweet cherry breeding because it directly positively influences fruit transportability, storage and shelf life. However, the underlying genes responsible and the molecular mechanisms that control fruit firmness remain unknown. In this study, we identified a candidate gene, PavSCPL, encoding a serine carboxypeptidase-like protein with natural allelic variation, that controls fruit firmness in sweet cherry using map-based cloning and functionally characterized PavSCPL during sweet cherry fruit softening. Genetic analysis revealed that fruit firmness in the 'Rainier' × 'Summit' F1 population was controlled by a single dominant gene. Bulked segregant analysis combined with fine mapping narrowed the candidate gene to a 473-kb region (7418778-7 891 914 bp) on chromosome 6 which included 72 genes. The candidate gene PavSCPL, and a null allele harbouring a 5244-bp insertion in the second exon that completely inactivated PavSCPL expression and resulted in the extra-hard-flesh phenotype, were identified by RNA-sequencing analysis and gene cloning. Quantitative RT-PCR analysis revealed that the PavSCPL expression level was increased with fruit softening. Virus-induced gene silencing of PavSCPL enhanced fruit firmness and suppressed the activities of certain pectin-degrading enzymes in the fruit. In addition, we developed functional molecular markers for PavSCPL and the Pavscpl5.2-k allele that co-segregated with the fruit firmness trait. Overall, this research identified a crucial functional gene for fruit firmness. The results provide insights into the genetic control and molecular mechanism of the fruit firmness trait and present useful molecular markers for molecular-assisted breeding for fruit firmness in sweet cherry.
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Affiliation(s)
- Xiliang Qi
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenanChina
| | - Yuanxin Dong
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenanChina
| | - Congli Liu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenanChina
- Zhongyuan Research CenterChinese Academy of Agricultural SciencesXinxiangHenanChina
| | - Lulu Song
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenanChina
| | - Lei Chen
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenanChina
| | - Ming Li
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenanChina
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13
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Ding X, Wang B, Gong Y, Yan X, Chen X, Zhong Y, Zhao Z. Exogenous Methyl Jasmonate (MeJA) Improves 'Ruixue' Apple Fruit Quality by Regulating Cell Wall Metabolism. Foods 2024; 13:1594. [PMID: 38890824 PMCID: PMC11171686 DOI: 10.3390/foods13111594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 05/05/2024] [Accepted: 05/16/2024] [Indexed: 06/20/2024] Open
Abstract
'Ruixue' apples were used as the test material to study the effect of 10 μM methyl jasmonate (MeJA) on the quality and cell wall metabolism of apples after 18 d of storage. The results showed that MeJA significantly decreased the respiratory rate, reduced the titratable acid content and maintained a high soluble solids content. MeJA has been shown to suppress the activities and gene expressions of WSP, CSP, ISP, and cellulose in contrast to the control group, thereby maintaining a lower cell permeability and higher exocarp firmness. MeJA significantly decreased the expression of MdACS, MdACO, MdPL, Mdgal, and MdPG genes in the apple exocarp when compared to the control group. In addition, the overexpression of MdPL18 increased the content of cell wall polysaccharides such as WSP and CSP, enhanced cell wall-degrading enzyme activities, and accelerated fruit ripening and softening, whereas silencing MdPL18 did the opposite. Together, these results demonstrate that exogenous MeJA maintains the Ruixue apple fruit quality by regulating the metabolism of cell wall substances.
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Affiliation(s)
| | | | | | | | | | | | - Zhengyang Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Xianyang 712100, China; (X.D.); (B.W.)
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14
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Pei Y, Xue Q, Shu P, Xu W, Du X, Wu M, Liu K, Pirrello J, Bouzayen M, Hong Y, Liu M. Bifunctional transcription factors SlERF.H5 and H7 activate cell wall and repress gibberellin biosynthesis genes in tomato via a conserved motif. Dev Cell 2024; 59:1345-1359.e6. [PMID: 38579721 DOI: 10.1016/j.devcel.2024.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 12/31/2023] [Accepted: 03/06/2024] [Indexed: 04/07/2024]
Abstract
The plant cell wall is a dynamic structure that plays an essential role in development, but the mechanism regulating cell wall formation remains poorly understood. We demonstrate that two transcription factors, SlERF.H5 and SlERF.H7, control cell wall formation and tomato fruit firmness in an additive manner. Knockout of SlERF.H5, SlERF.H7, or both genes decreased cell wall thickness, firmness, and cellulose contents in fruits during early development, especially in double-knockout lines. Overexpressing either gene resulted in thicker cell walls and greater fruit firmness with elevated cellulose levels in fruits but severely dwarf plants with lower gibberellin contents. We further identified that SlERF.H5 and SlERF.H7 activate the cellulose biosynthesis gene SlCESA3 but repress the gibberellin biosynthesis gene GA20ox1. Moreover, we identified a conserved LPL motif in these ERFs responsible for their activities as transcriptional activators and repressors, providing insight into how bifunctional transcription factors modulate distinct developmental processes.
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Affiliation(s)
- Yangang Pei
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, China
| | - Qihan Xue
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, China
| | - Peng Shu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, China
| | - Weijie Xu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, China
| | - Xiaofei Du
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, China
| | - Mengbo Wu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, China
| | - Kaidong Liu
- Life Science and Technology School, Lingnan Normal University, Zhanjiang 524048, China
| | - Julien Pirrello
- Laboratoire de Recherche en Sciences Végétales-Génomique et Biotechnologie des Fruits-UMR5546, Université de Toulouse, CNRS, UPS, Toulouse-INP, Toulouse, France
| | - Mondher Bouzayen
- Laboratoire de Recherche en Sciences Végétales-Génomique et Biotechnologie des Fruits-UMR5546, Université de Toulouse, CNRS, UPS, Toulouse-INP, Toulouse, France
| | - Yiguo Hong
- School of Life Sciences, University of Warwick, Warwick CV4 7AL, UK; State Key Laboratory of North China Crop Improvement and Regulation, College of Horticulture, Hebei Agricultural University, Baoding 071000, China
| | - Mingchun Liu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, China.
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15
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Al-Hinai TZS, Mackay CL, Fry SC. Fruit softening: evidence for rhamnogalacturonan lyase action in vivo in ripe fruit cell walls. ANNALS OF BOTANY 2024; 133:547-558. [PMID: 38180460 PMCID: PMC11037484 DOI: 10.1093/aob/mcad197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/02/2024] [Indexed: 01/06/2024]
Abstract
BACKGROUND AND AIMS The softening of ripening fruit involves partial depolymerization of cell-wall pectin by three types of reaction: enzymic hydrolysis, enzymic elimination (lyase-catalysed) and non-enzymic oxidative scission. Two known lyase activities are pectate lyase and rhamnogalacturonan lyase (RGL), potentially causing mid-chain cleavage of homogalacturonan and rhamnogalacturonan-I (RG-I) domains of pectin respectively. However, the important biological question of whether RGL exhibits action in vivo had not been tested. METHODS We developed a method for specifically and sensitively detecting in-vivo RGL products, based on Driselase digestion of cell walls and detection of a characteristic unsaturated 'fingerprint' product (tetrasaccharide) of RGL action. KEY RESULTS In model experiments, potato RG-I that had been partially cleaved in vitro by commercial RGL was digested by Driselase, releasing an unsaturated tetrasaccharide ('ΔUA-Rha-GalA-Rha'), taken as diagnostic of RGL action. This highly acidic fingerprint compound was separated from monosaccharides (galacturonate, galactose, rhamnose, etc.) by electrophoresis at pH 2, then separated from ΔUA-GalA (the fingerprint of pectate lyase action) by thin-layer chromatography. The 'ΔUA-Rha-GalA-Rha' was confirmed as 4-deoxy-β-l-threo-hex-4-enopyranuronosyl-(1→2)-l-rhamnosyl-(1→4)-d-galacturonosyl-(1→2)-l-rhamnose by mass spectrometry and acid hydrolysis. Driselase digestion of cell walls from diverse ripe fruits [date, sea buckthorn, cranberry, yew (arils), mango, plum, blackberry, apple, pear and strawberry] yielded the same fingerprint compound, demonstrating that RGL had been acting in vivo in these fruits prior to harvest. The 'fingerprint' : (galacturonate + rhamnose) ratio in digests from ripe dates was approximately 1 : 72 (mol/mol), indicating that ~1.4 % of the backbone Rha→GalA bonds in endogenous RG-I had been cleaved by in-vivo RGL action. CONCLUSIONS The results provide the first demonstration that RGL, previously known from studies of fruit gene expression, proteomic studies and in-vitro enzyme activity, exhibits enzyme action in the walls of soft fruits and may thus be proposed to contribute to fruit softening.
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Affiliation(s)
- Thurayya Z S Al-Hinai
- The Edinburgh Cell Wall Group, Institute of Molecular Plant Sciences, The University of Edinburgh, Daniel Rutherford Building, The King’s Buildings, Max Born Crescent, Edinburgh EH9 3BF, UK
| | - C Logan Mackay
- EastCHEM School of Chemistry, The University of Edinburgh, The King’s Buildings, Edinburgh EH9 3FJ, UK
| | - Stephen C Fry
- The Edinburgh Cell Wall Group, Institute of Molecular Plant Sciences, The University of Edinburgh, Daniel Rutherford Building, The King’s Buildings, Max Born Crescent, Edinburgh EH9 3BF, UK
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16
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Zhu K, Wu J, Hu A, Yin Z, Hou Z, Ye X, Chen S. Extensive Analysis of Mulberry ( Morus rubra L.) Polysaccharides with Different Maturities by Using Two-Step Extraction and LC/QqQ-MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 38606987 DOI: 10.1021/acs.jafc.3c07847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
A primary challenge of polysaccharide analysis is the need for comprehensive extraction and characterization methods. In this study, mulberry polysaccharides at different maturities were fully extracted through a two-step process involving ethylenediaminetetraacetic acid (EDTA) and sodium hydroxide (NaOH), and their structures were determined by a combination analysis of monosaccharides and glycosidic linkages based on liquid chromatography triple quadrupole mass spectrometry (LC/QqQ-MS). The results indicate mulberry polysaccharides mainly contain highly branched pectic polysaccharides, (1,3,6)-linked glucan, xylan, and xyloglucan, but the content of different portions varies at different maturity stages. HG decreases from 19.12 and 19.14% (green mulberry) to 9.80 and 6.08% (red mulberry) but increases to 17.83 and 11.83% as mulberry transitioned from red to black. In contrast, the contents of glucan showed opposite trends. When mulberry turns red to black, the RG-I arabinan chains decrease from 47.75 and 28.86% to 13.16 and 12.72%, while the galactan side chains increase from 1.18 and 1.91 to 8.3 and 6.49%, xylan and xyloglucan show an increase in content. Overall, the two-step extraction combined with LC/QqQ-MS provides a new strategy for extensive analysis of complex plant polysaccharides.
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Affiliation(s)
- Kai Zhu
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou 310058, China
| | - Jinghua Wu
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou 310058, China
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Ankai Hu
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou 310058, China
| | - Zihao Yin
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou 310058, China
| | - Zhiqiang Hou
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou 310058, China
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou 310058, China
- Zhejiang University Zhongyuan Institute, Zhengzhou 450000, China
- Ningbo Research Institute of Zhejiang University, Ningbo 315100, China
- Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing 314102, China
| | - Shiguo Chen
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou 310058, China
- Zhejiang University Zhongyuan Institute, Zhengzhou 450000, China
- Ningbo Research Institute of Zhejiang University, Ningbo 315100, China
- Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing 314102, China
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Ma Y, Wang Z, Humphries J, Ratcliffe J, Bacic A, Johnson KL, Qu G. WALL-ASSOCIATED KINASE Like 14 regulates vascular tissue development in Arabidopsis and tomato. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 341:112013. [PMID: 38309474 DOI: 10.1016/j.plantsci.2024.112013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 01/30/2024] [Accepted: 01/30/2024] [Indexed: 02/05/2024]
Abstract
Initiation of plant vascular tissue is regulated by transcriptional networks during development and in response to environmental stimuli. The WALL-ASSOCIATED KINASES (WAKs) and WAK-likes (WAKLs) are cell surface receptors involved in cell expansion and defence in cells with primary walls, yet their roles in regulation of vascular tissue development that contain secondary walls remains unclear. In this study, we showed tomato (Solanum lycopersicum) SlWAKL2 and the orthologous gene in Arabidopsis thaliana, AtWAKL14, were specifically expressed in vascular tissues. SlWAKL2-RNAi tomato plants displayed smaller fruit size with fewer seeds and vascular bundles compared to wild-type (WT) and over-expression (OE) lines. RNA-seq data showed that SlWAKL2-RNAi fruits down-regulated transcript levels of genes related to vascular tissue development compared to WT. Histological analysis showed T-DNA insertion mutant wakl14-1 had reduced plant stem length with fewer number of xylem vessels and interfascicular fibres compared to WT, with no significant differences in cellulose and lignin content. Mutant wakl14-1 also showed reduced number of vascular bundles in fruit. A proWAKL14::mCherry-WAKL14 fusion protein was able to complement wakl14-1 phenotypes and showed mCherry-WAKL14 associated with the plasma membrane. In vitro binding assays showed both SlWAKL2 and AtWAKL14 can interact with pectin and oligogalacturonides. Our results reveal novel roles of WAKLs in regulating vascular tissue development.
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Affiliation(s)
- Yingxuan Ma
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China; School of BioSciences, University of Melbourne, Parkville, VIC 3052, Australia; La Trobe Institute for Sustainable Agriculture & Food, Department of Animal, Plant and Soil Science, AgriBio Building, La Trobe University, Bundoora, VIC 3086, Australia
| | - Zhenghang Wang
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - John Humphries
- La Trobe Institute for Sustainable Agriculture & Food, Department of Animal, Plant and Soil Science, AgriBio Building, La Trobe University, Bundoora, VIC 3086, Australia
| | - Julian Ratcliffe
- La Trobe Institute for Sustainable Agriculture & Food, Department of Animal, Plant and Soil Science, AgriBio Building, La Trobe University, Bundoora, VIC 3086, Australia
| | - Antony Bacic
- La Trobe Institute for Sustainable Agriculture & Food, Department of Animal, Plant and Soil Science, AgriBio Building, La Trobe University, Bundoora, VIC 3086, Australia; Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang Agriculture and Forestry University, Lin'an, Hangzhou 311300, China
| | - Kim L Johnson
- La Trobe Institute for Sustainable Agriculture & Food, Department of Animal, Plant and Soil Science, AgriBio Building, La Trobe University, Bundoora, VIC 3086, Australia; Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang Agriculture and Forestry University, Lin'an, Hangzhou 311300, China.
| | - Guiqin Qu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
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Bisht A, Goh KKT, Sims IM, Edwards PJB, Matia-Merino L. Does harvesting age matter? Changes in structure and rheology of a shear-thickening polysaccharide from Cyathea medullaris as a function of age. Carbohydr Polym 2024; 329:121757. [PMID: 38286538 DOI: 10.1016/j.carbpol.2023.121757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/21/2023] [Accepted: 12/28/2023] [Indexed: 01/31/2024]
Abstract
A shear-thickening polysaccharide from the New Zealand Black tree fern (Cyathea medullaris, commonly known as mamaku) extracted from different age fronds (stage 1: young, stage 2: fully grown and stage 3: old) was characterised in terms of structure and rheological properties. Constituent sugar analysis and 1H and 13C NMR revealed a repeating backbone of -4)-β-D-GlcpA-(1 → 2)-α-D-Manp-(1→, for all mamaku polysaccharide (MP) samples from different age fronds without any alterations in molecular structure. However, the molecular weight (Mw) was reduced with increasing age, from ~4.1 × 106 to ~2.1 × 106 Da from stage 1 to stage 3, respectively. This decrease in Mw (and size) consequently reduced the shear viscosity (ηs-Stage 1 > ηs-Stage 2 > ηs-Stage 3). However, the extent of shear-thickening and uniaxial extensional viscosity of MP stage 2 was greater than MP stage 1, which was attributed to a greater intermolecular interaction occurring in the former. Shear-thickening behaviour was not observed in MP stage 3.
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Affiliation(s)
- Akshay Bisht
- School of Food and Advanced Technology, Massey University, Palmerston North, New Zealand.
| | - Kelvin K T Goh
- School of Food and Advanced Technology, Massey University, Palmerston North, New Zealand.
| | - Ian M Sims
- The Ferrier Research Institute, Victoria University of Wellington, New Zealand.
| | - Patrick J B Edwards
- School of Natural Sciences, Massey University, Palmerston North, New Zealand.
| | - Lara Matia-Merino
- School of Food and Advanced Technology, Massey University, Palmerston North, New Zealand.
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19
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Wang H, Li Y, Wassie M, Huo L, Shi H. Salicylic Acid Spray Delays Sand Pear Fruit Senescence during Room Temperature Shelf Life by Regulating Antioxidant Capacity and Senescence-Related Genes. PLANTS (BASEL, SWITZERLAND) 2024; 13:848. [PMID: 38592916 PMCID: PMC10975672 DOI: 10.3390/plants13060848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/12/2024] [Accepted: 03/13/2024] [Indexed: 04/11/2024]
Abstract
'Whangkeumbae' (Pyrus pyrifolia) is a variety of sand pear fruit well-known for its smooth surface and good taste. However, the fruit quality is adversely affected by postharvest ethylene production. Therefore, improving postharvest shelf life by regulating fruit senescence is critical to promoting the 'Whangkeumbae' fruit industry. Here, we investigated the effect of salicylic acid (SA) spray on fruit senescence in sand pears during room temperature shelf life. Exogenous SA reduced polyphenol oxidase (PPO) activity and malondialdehyde (MDA) content during room temperature shelf life. Additionally, SA effectively maintained the fruit skin coloration and increased the activity of antioxidant enzymes, such as superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX). SA treatment inhibited PpPPO1 expression and upregulated PpSOD1, PpAPX6, and PpGST2 expression. Furthermore, SA application downregulated the expression of PpACO2, PpEIN3a, PpNCED1, and PpAOC2, while upregulating PpNPR-1, PpTAR2, and PpCOMT1 during room temperature shelf life. SA treatment also influenced cell wall metabolism and modification genes by inhibiting PpPG1, PpPME2, and PpCEL3 and inducing PpPGIP1 expression. Additionally, SA treatment affected sugar and acid metabolism genes and increased the expression of PpSPS1, PpSUS1, PpSOT1, PpTMT4, PpSWEET15, and PpcyNAD-MDH, but suppressed the expression of PpcyNADP-ME. The Pearson correlation analysis indicated that PPO activity and MDA content were positively correlated with the expression of PpPPO1, PpACO2, PpEIN3a, PpNCED1, PpAOC2, PpPG1, PpPME2, PpCEL3, and PpcyNDA-MDH. Conversely, these factors were negatively associated with the activities of SOD, POD, CAT, and APX, as well as the expression levels of PpSOD1, PpPOD1, PpCAT1, PpAPX6, PpGST2, PpNPR-1, PpTAR2, PpCOMT1, PpPGIP1, PpSPS1, PpSUS1, PpSOT1, PpTMT4, PpSWEET15, and PpcyNAD-MDH. Our results reveal that exogenous SA could delay fruit senescence in sand pear fruit by regulating various biochemical and molecular mechanisms and can be used to effectively extend fruit shelf life during room temperature storage. However, further research is necessary to determine whether the fruits sprayed with SA are suitable for direct human consumption.
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Affiliation(s)
- Huiying Wang
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China
| | - Yawei Li
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China
| | - Misganaw Wassie
- Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 666300, China
| | - Liyue Huo
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China
| | - Haiyan Shi
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China
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20
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Yu Y, Peng J, Jia Y, Guan Q, Xiao G, Li C, Shen S, Li K. Chemical characterization-function relationship of pectins from persimmon fruit within different ripeness. Food Chem 2024; 435:137645. [PMID: 37806203 DOI: 10.1016/j.foodchem.2023.137645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 09/11/2023] [Accepted: 09/29/2023] [Indexed: 10/10/2023]
Abstract
This study investigated the structural and functional characteristics of two different molecular weight persimmon pectin extracted from unripe persimmon (PP-1) and ripe persimmon (PP-2). The molecular weight was determined as 117.8 kDa and 61.3 kDa for PP-1 and PP-2, which consisting of glucose, rhamnose, mannose, galactose, and xylose. AFM results indicated PP-1 with many linear chains, and short chains in while short chains, branching points, and heterogeneous clumps were found in PP-2.Emulsion characterization and storage stability experiments revealed that PP-1 with more stable emulsifying properties than PP-2 and commercial citrus pectin. In vitro fermentation of PP-1 and PP-2 by gut microbiota indicated that PP-1 and PP-2 groups were higher than inulin group in total SCFAs production after 48 h of fermentation. This study provided useful information for high value utilization of persimmon pectin.
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Affiliation(s)
- Ying Yu
- Guangdong Key Laboratory of Science and Technology of Lingnan Specialty Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China; Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - Jinming Peng
- Guangdong Key Laboratory of Science and Technology of Lingnan Specialty Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Yangyang Jia
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Qingyun Guan
- College of Food Science and Technology, Key Laboratory of Environment Correlative Food Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Gengsheng Xiao
- Guangdong Key Laboratory of Science and Technology of Lingnan Specialty Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Chunmei Li
- College of Food Science and Technology, Key Laboratory of Environment Correlative Food Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Shanshan Shen
- Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China.
| | - Kaikai Li
- College of Food Science and Technology, Key Laboratory of Environment Correlative Food Science, Huazhong Agricultural University, Wuhan 430070, China.
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21
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Gunaseelan K, Schröder R, Rebstock R, Ninan AS, Deng C, Khanal BP, Favre L, Tomes S, Dragulescu MA, O'Donoghue EM, Hallett IC, Schaffer RJ, Knoche M, Brummell DA, Atkinson RG. Constitutive expression of apple endo-POLYGALACTURONASE1 in fruit induces early maturation, alters skin structure and accelerates softening. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 117:1413-1431. [PMID: 38038980 DOI: 10.1111/tpj.16571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 10/25/2023] [Accepted: 11/20/2023] [Indexed: 12/02/2023]
Abstract
During fruit ripening, polygalacturonases (PGs) are key contributors to the softening process in many species. Apple is a crisp fruit that normally exhibits only minor changes to cell walls and limited fruit softening. Here, we explore the effects of PG overexpression during fruit development using transgenic apple lines overexpressing the ripening-related endo-POLYGALACTURONASE1 gene. MdPG1-overexpressing (PGox) fruit displayed early maturation/ripening with black seeds, conversion of starch to sugars and ethylene production occurring by 80 days after pollination (DAP). PGox fruit exhibited a striking, white-skinned phenotype that was evident from 60 DAP and most likely resulted from increased air spaces and separation of cells in the hypodermis due to degradation of the middle lamellae. Irregularities in the integrity of the epidermis and cuticle were also observed. By 120 DAP, PGox fruit cracked and showed lenticel-associated russeting. Increased cuticular permeability was associated with microcracks in the cuticle around lenticels and was correlated with reduced cortical firmness at all time points and extensive post-harvest water loss from the fruit, resulting in premature shrivelling. Transcriptomic analysis suggested that early maturation was associated with upregulation of genes involved in stress responses, and overexpression of MdPG1 also altered the expression of genes involved in cell wall metabolism (e.g. β-galactosidase, MD15G1221000) and ethylene biosynthesis (e.g. ACC synthase, MD14G1111500). The results show that upregulation of PG not only has dramatic effects on the structure of the fruit outer cell layers, indirectly affecting water status and turgor, but also has unexpected consequences for fruit development.
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Affiliation(s)
- Kularajathevan Gunaseelan
- The New Zealand Institute for Plant and Food Research Limited (Plant and Food Research), Mount Albert Research Centre, Private Bag 92169, Auckland, 1142, New Zealand
| | - Roswitha Schröder
- The New Zealand Institute for Plant and Food Research Limited (Plant and Food Research), Mount Albert Research Centre, Private Bag 92169, Auckland, 1142, New Zealand
| | - Ria Rebstock
- The New Zealand Institute for Plant and Food Research Limited (Plant and Food Research), Mount Albert Research Centre, Private Bag 92169, Auckland, 1142, New Zealand
| | - Annu S Ninan
- The New Zealand Institute for Plant and Food Research Limited (Plant and Food Research), Mount Albert Research Centre, Private Bag 92169, Auckland, 1142, New Zealand
| | - Cecilia Deng
- The New Zealand Institute for Plant and Food Research Limited (Plant and Food Research), Mount Albert Research Centre, Private Bag 92169, Auckland, 1142, New Zealand
| | - Bishnu P Khanal
- Institute for Horticultural Production Systems, Leibniz-University Hannover, Herrenhäuser Straße 2, 30419, Hannover, Germany
| | - Laurie Favre
- Plant and Food Research, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Sumathi Tomes
- The New Zealand Institute for Plant and Food Research Limited (Plant and Food Research), Mount Albert Research Centre, Private Bag 92169, Auckland, 1142, New Zealand
| | - Monica A Dragulescu
- The New Zealand Institute for Plant and Food Research Limited (Plant and Food Research), Mount Albert Research Centre, Private Bag 92169, Auckland, 1142, New Zealand
| | - Erin M O'Donoghue
- Plant and Food Research, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Ian C Hallett
- The New Zealand Institute for Plant and Food Research Limited (Plant and Food Research), Mount Albert Research Centre, Private Bag 92169, Auckland, 1142, New Zealand
| | | | - Moritz Knoche
- Institute for Horticultural Production Systems, Leibniz-University Hannover, Herrenhäuser Straße 2, 30419, Hannover, Germany
| | - David A Brummell
- Plant and Food Research, Private Bag 11600, Palmerston North, 4442, New Zealand
| | - Ross G Atkinson
- The New Zealand Institute for Plant and Food Research Limited (Plant and Food Research), Mount Albert Research Centre, Private Bag 92169, Auckland, 1142, New Zealand
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22
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Su G, Lin Y, Wang C, Lu J, Liu Z, He Z, Shu X, Chen W, Wu R, Li B, Zhu C, Rose JKC, Grierson D, Giovannoni JJ, Shi Y, Chen K. Expansin SlExp1 and endoglucanase SlCel2 synergistically promote fruit softening and cell wall disassembly in tomato. THE PLANT CELL 2024; 36:709-726. [PMID: 38000892 PMCID: PMC10896287 DOI: 10.1093/plcell/koad291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/18/2023] [Accepted: 11/04/2023] [Indexed: 11/26/2023]
Abstract
Fruit softening, an irreversible process that occurs during fruit ripening, can lead to losses and waste during postharvest transportation and storage. Cell wall disassembly is the main factor leading to loss of fruit firmness, and several ripening-associated cell wall genes have been targeted for genetic modification, particularly pectin modifiers. However, individual knockdown of most cell wall-related genes has had minimal influence on cell wall integrity and fruit firmness, with the notable exception of pectate lyase. Compared to pectin disassembly, studies of the cell wall matrix, the xyloglucan-cellulose framework, and underlying mechanisms during fruit softening are limited. Here, a tomato (Solanum lycopersicum) fruit ripening-associated α-expansin (SlExpansin1/SlExp1) and an endoglucanase (SlCellulase2/SlCel2), which function in the cell wall matrix, were knocked out individually and together using clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated nuclease 9-mediated genome editing. Simultaneous knockout of SlExp1 and SlCel2 enhanced fruit firmness, reduced depolymerization of homogalacturonan-type pectin and xyloglucan, and increased cell adhesion. In contrast, single knockouts of either SlExp1 or SlCel2 did not substantially change fruit firmness, while simultaneous overexpression of SlExp1 and SlCel2 promoted early fruit softening. Collectively, our results demonstrate that SlExp1 and SlCel2 synergistically regulate cell wall disassembly and fruit softening in tomato.
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Affiliation(s)
- Guanqing Su
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Yifan Lin
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Chunfeng Wang
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Jiao Lu
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Zimeng Liu
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Zhiren He
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Xiu Shu
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Wenbo Chen
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Rongrong Wu
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Baijun Li
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Changqing Zhu
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Jocelyn K C Rose
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Donald Grierson
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK
| | - James J Giovannoni
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
- United States Department of Agriculture - Agricultural Research Service and Boyce Thompson Institute for Plant Research, Cornell University, Ithaca, NY 14853, USA
| | - Yanna Shi
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Kunsong Chen
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
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23
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Lagarda-Clark EA, Goulet C, Duarte-Sierra A. Biochemical dynamics during postharvest: Highlighting the interplay of stress during storage and maturation of fresh produce. Biomol Concepts 2024; 15:bmc-2022-0048. [PMID: 38587059 DOI: 10.1515/bmc-2022-0048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 03/18/2024] [Indexed: 04/09/2024] Open
Abstract
The lifecycle of fresh produce involves a sequence of biochemical events during their ontology, and these events are particularly significant for climacteric fruits. A high demand during ripening is observed in these plant products, which is reflected in a high rate of respiration and ethylene production. Increased respiratory demand triggers the activation of secondary pathways such as alternate oxidase, which do not experience critical increases in energy consumption in non-climacteric fruit. In addition, biochemical events produced by external factors lead to compensatory responses in fresh produce to counteract the oxidative stress caused by the former. The dynamics of these responses are accompanied by signaling, where reactive oxygen species play a pivotal role in fresh product cell perception. This review aims to describe the protection mechanisms of fresh produce against environmental challenges and how controlled doses of abiotic stressors can be used to improve quality and prolong their shelf-life through the interaction of stress and defense mechanisms.
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Affiliation(s)
- Ernesto Alonso Lagarda-Clark
- Food Science Department, Laval University, Quebec, QC G1V 0A6, Canada
- Center for Research in Plant Innovation (CRIV), Laval University, Quebec, QC G1V 6 0A6, Canada
- Institute on Nutrition and Functional Foods (INAF), Laval University, Quebec, QC G1V 8 0A6, Canada
| | - Charles Goulet
- Food Science Department, Laval University, Quebec, QC G1V 0A6, Canada
- Center for Research in Plant Innovation (CRIV), Laval University, Quebec, QC G1V 6 0A6, Canada
- Department of Phytology, Université Laval, Québec, QC G1V 0A6, Canada
| | - Arturo Duarte-Sierra
- Food Science Department, Laval University, Quebec, QC G1V 0A6, Canada
- Center for Research in Plant Innovation (CRIV), Laval University, Quebec, QC G1V 6 0A6, Canada
- Institute on Nutrition and Functional Foods (INAF), Laval University, Quebec, QC G1V 8 0A6, Canada
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24
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You S, Wu Y, Li W, Liu X, Tang Q, Huang F, Li Y, Wang H, Liu M, Zhang Y. SlERF.G3-Like mediates a hierarchical transcriptional cascade to regulate ripening and metabolic changes in tomato fruit. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:165-180. [PMID: 37750661 PMCID: PMC10754011 DOI: 10.1111/pbi.14177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 07/25/2023] [Accepted: 09/02/2023] [Indexed: 09/27/2023]
Abstract
The tomato ripening process contains complex changes, including ethylene signalling, cell wall softening and numerous metabolic changes. So far, much is still unknown about how tomato plants precisely coordinate fruit maturation and metabolic regulation. In this paper, the ERF family transcription factor SlERF.G3-Like in tomato was found to be involved in the regulation of ethylene synthesis, cell wall degradation and the flavonoid pathway. We show that the master ripening regulator SlRIN was found to directly bind to the promoter region of SlERF.G3-Like to activate its expression. In addition, we managed to increase the production of resveratrol derivatives from ~1.44 mg/g DW in E8:VvStSy line to ~2.43 mg/g DW by crossing p35S: SlERF.G3-Like with the E8:VvStSy line. Our data provide direct evidence that SlERF.G3-Like, a hierarchical transcriptional factor, can directly manipulate pathways in which tomatoes can coordinate fruit maturation and metabolic changes. We also attest that SlERF.G3-Like can be used as an effective tool for phenylpropanoid metabolic engineering.
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Affiliation(s)
- Shengjie You
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Yu Wu
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Wen Li
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Xiaofeng Liu
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Qinlan Tang
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Fengkun Huang
- Sanya Nanfan Research Institute of Hainan UniversityHainan Yazhou Bay Seed LaboratorySanyaChina
- College of Tropical CropsHainan UniversityHaikouChina
| | - Yan Li
- Sanya Nanfan Research Institute of Hainan UniversityHainan Yazhou Bay Seed LaboratorySanyaChina
- College of Tropical CropsHainan UniversityHaikouChina
| | - Hsihua Wang
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Mingchun Liu
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Yang Zhang
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
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25
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Zhang RX, Liu Y, Zhang X, Chen X, Sun J, Zhao Y, Zhang J, Yao JL, Liao L, Zhou H, Han Y. Two adjacent NAC transcription factors regulate fruit maturity date and flavor in peach. THE NEW PHYTOLOGIST 2024; 241:632-649. [PMID: 37933224 DOI: 10.1111/nph.19372] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 09/29/2023] [Indexed: 11/08/2023]
Abstract
Although maturity date (MD) is an essential factor affecting fresh fruit marketing and has a pleiotropic effect on fruit taste qualities, the underlying mechanisms remain largely unclear. In this study, we functionally characterized two adjacent NAM-ATAF1/2-CUC2 (NAC) transcription factors (TFs), PpNAC1 and PpNAC5, both of which were associated with fruit MD in peach. PpNAC1 and PpNAC5 were found capable of activating transcription of genes associated with cell elongation, cell wall degradation and ethylene biosynthesis, suggesting their regulatory roles in fruit enlargement and ripening. Furthermore, PpNAC1 and PpNAC5 had pleiotropic effects on fruit taste due to their ability to activate transcription of genes for sugar accumulation and organic acid degradation. Interestingly, both PpNAC1 and PpNAC5 orthologues were found in fruit-producing angiosperms and adjacently arranged in all 91 tested dicots but absent in fruitless gymnosperms, suggesting their important roles in fruit development. Our results provide insight into the regulatory roles of NAC TFs in MD and fruit taste.
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Affiliation(s)
- Ruo-Xi Zhang
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Yudi Liu
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, 430074, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049, China
| | - Xian Zhang
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, 430074, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049, China
| | - Xiaomei Chen
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, 430074, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049, China
| | - Juanli Sun
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, 430074, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049, China
| | - Yun Zhao
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Jinyun Zhang
- Key Laboratory of Horticultural Crop Germplasm Innovation and Utilization (Co-construction by Ministry and Province), Key Laboratory of Horticultural Crop Genetic Improvement and Eco-Physiology of Anhui Province, Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230031, China
| | - Jia-Long Yao
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland, 1142, New Zealand
| | - Liao Liao
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Hui Zhou
- Key Laboratory of Horticultural Crop Germplasm Innovation and Utilization (Co-construction by Ministry and Province), Key Laboratory of Horticultural Crop Genetic Improvement and Eco-Physiology of Anhui Province, Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230031, China
| | - Yuepeng Han
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
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26
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Makarova EN, Shakhmatov EG. Structure of KOH-soluble polysaccharides from сoniferous greens of Norway spruce (Picea abies): The pectin-xylan-AGPs complex. Part 2. Int J Biol Macromol 2024; 254:128000. [PMID: 37949276 DOI: 10.1016/j.ijbiomac.2023.128000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/29/2023] [Accepted: 11/07/2023] [Indexed: 11/12/2023]
Abstract
Polymers containing arabinoglucuronoxylan, fucogalactoxyglucan, pectin and arabinogalactan proteins were obtained from PAK isolated from Norway spruce with 7 % KOH. The pectin core of PAK-I2-F-1 and PAK-I2-F-2 was dominated by RG-I, as treatment with 1,4-α-D-polygalacturonase resulted in almost complete removal of homogalacturonan. Interestingly, the above has not affected the co-fractionation of arabinoglucuronoxylan (AGX), arabinogalactan proteins and rhamnogalacturonan I (RG-I). Since pectin was mainly represented by RG-I, we concluded that xylan is specifically associated with RG-I. Correlations in the HMBC spectrum demonstrate intermolecular interactions between the α-L-Rhap (RG-I) and the Xyl (xylan), indicating a covalently bound AGX:RG-I complex via the Xyl-(1→4)-Rha bond: …→2)-[(2,4-β-D-Xylp)-(1→4)]-[(α-D-GalpA-(1→2)]-α-L-Rhap-(1→4)-α-D-GalpA-(1→…. In PAK-H1-1-F-1 and PAK-H1-1-F-2, parts of RG-I and xylan were removed by enzymolysis. Part of the xylan was probably attached to the above-mentioned RG-I blocks. The removal of part of RG-I, xylan and the disappearance of the signal in the HMBC spectrum indicating the bond between RG-I and xylan confirms that part of the arabinoglucuronoxylan is covalently bound to RG-I. The observed glycosidic linkage contradicts the dominant PCW model in which pectin and hemicellulose polysaccharide networks are considered as independent components. It can be concluded that alkali-soluble xylan from Norway spruce was detected both in the free state and covalently bound to pectin.
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Affiliation(s)
- Elena N Makarova
- Institute of Chemistry, Federal Research Center "Komi Science Centre of the Ural Branch of the Russian Academy of Sciences", Pervomaiskaya st. 48, Syktyvkar 167982, Russia
| | - Evgeny G Shakhmatov
- Institute of Chemistry, Federal Research Center "Komi Science Centre of the Ural Branch of the Russian Academy of Sciences", Pervomaiskaya st. 48, Syktyvkar 167982, Russia.
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Reissig GN, de Carvalho Oliveira TF, Parise AG, Costa ÁVL, Posso DA, Rombaldi CV, Souza GM. Approximate entropy: a promising tool to understand the hidden electrical activity of fruit. Commun Integr Biol 2023; 16:2195236. [PMID: 37007213 PMCID: PMC10054301 DOI: 10.1080/19420889.2023.2195236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
Fruits, like other parts of the plant, appear to have a rich electrical activity that may contain information. Here, we present data showing differences in the electrome complexity of tomato fruits through ripening and discuss possible physiological processes involved. The complexity of the signals, measured through approximate entropy, varied along the fruit ripening process. When analyzing the fruits individually, a decrease in entropy values was observed when they entered the breaker stage, followed by a tendency to increase again when they entered the light red stage. Consequently, the data obtained showed a decrease in signal complexity in the breaker stage, probably due to some physiological process that ends up predominating to the detriment of others. This result may be linked to processes involved in ripening, such as climacteric. Electrophysiological studies in the reproductive stage of the plant are still scarce, and research in this direction is of paramount importance to understand whether the electrical signals observed can transmit information from reproductive structures to other modules of plants. This work opens the possibility of studying the relationship between the electrical activity and fruit ripening through the analysis of approximate entropy. More studies are necessary to understand whether there is a correlation or a cause-response relationship in the phenomena involved. There is a myriad of possibilities for the applicability of this knowledge to different areas, from understanding the cognitive processes of plants to achieving more accurate and sustainable agriculture.
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Quinn O, Kumar M, Turner S. The role of lipid-modified proteins in cell wall synthesis and signaling. PLANT PHYSIOLOGY 2023; 194:51-66. [PMID: 37682865 PMCID: PMC10756762 DOI: 10.1093/plphys/kiad491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/28/2023] [Accepted: 07/28/2023] [Indexed: 09/10/2023]
Abstract
The plant cell wall is a complex and dynamic extracellular matrix. Plant primary cell walls are the first line of defense against pathogens and regulate cell expansion. Specialized cells deposit a secondary cell wall that provides support and permits water transport. The composition and organization of the cell wall varies between cell types and species, contributing to the extensibility, stiffness, and hydrophobicity required for its proper function. Recently, many of the proteins involved in the biosynthesis, maintenance, and remodeling of the cell wall have been identified as being post-translationally modified with lipids. These modifications exhibit diverse structures and attach to proteins at different sites, which defines the specific role played by each lipid modification. The introduction of relatively hydrophobic lipid moieties promotes the interaction of proteins with membranes and can act as sorting signals, allowing targeted delivery to the plasma membrane regions and secretion into the apoplast. Disruption of lipid modification results in aberrant deposition of cell wall components and defective cell wall remodeling in response to stresses, demonstrating the essential nature of these modifications. Although much is known about which proteins bear lipid modifications, many questions remain regarding the contribution of lipid-driven membrane domain localization and lipid heterogeneity to protein function in cell wall metabolism. In this update, we highlight the contribution of lipid modifications to proteins involved in the formation and maintenance of plant cell walls, with a focus on the addition of glycosylphosphatidylinositol anchors, N-myristoylation, prenylation, and S-acylation.
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Affiliation(s)
- Oliver Quinn
- Faculty of Biology, Medicine and Health, University of Manchester, Michael Smith Building, Dover Street, Manchester M13 9PT, UK
| | - Manoj Kumar
- Faculty of Biology, Medicine and Health, University of Manchester, Michael Smith Building, Dover Street, Manchester M13 9PT, UK
| | - Simon Turner
- Faculty of Biology, Medicine and Health, University of Manchester, Michael Smith Building, Dover Street, Manchester M13 9PT, UK
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Jobert F, Yadav S, Robert S. Auxin as an architect of the pectin matrix. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:6933-6949. [PMID: 37166384 PMCID: PMC10690733 DOI: 10.1093/jxb/erad174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/10/2023] [Indexed: 05/12/2023]
Abstract
Auxin is a versatile plant growth regulator that triggers multiple signalling pathways at different spatial and temporal resolutions. A plant cell is surrounded by the cell wall, a complex and dynamic network of polysaccharides. The cell wall needs to be rigid to provide mechanical support and protection and highly flexible to allow cell growth and shape acquisition. The modification of the pectin components, among other processes, is a mechanism by which auxin activity alters the mechanical properties of the cell wall. Auxin signalling precisely controls the transcriptional output of several genes encoding pectin remodelling enzymes, their local activity, pectin deposition, and modulation in different developmental contexts. This review examines the mechanism of auxin activity in regulating pectin chemistry at organ, cellular, and subcellular levels across diverse plant species. Moreover, we ask questions that remain to be addressed to fully understand the interplay between auxin and pectin in plant growth and development.
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Affiliation(s)
- François Jobert
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences (SLU), 90183, Umeå, Sweden
- CRRBM, Université de Picardie Jules Verne, 80000, Amiens, France
| | - Sandeep Yadav
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences (SLU), 90183, Umeå, Sweden
| | - Stéphanie Robert
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences (SLU), 90183, Umeå, Sweden
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Li X, Han Y, Wu X, Li L, Zhang R. Effects of inoculation with a binary mixture of Lactobacillus plantarum and Leuconostoc citreum on cell wall components of Chinese Dongbei suancai. Food Res Int 2023; 173:113458. [PMID: 37803783 DOI: 10.1016/j.foodres.2023.113458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 09/08/2023] [Accepted: 09/10/2023] [Indexed: 10/08/2023]
Abstract
This study aimed to investigate the effects of inoculation with a starter culture consisting of Lactobacillus plantarum LNJ002 and Leuconostoc citreum BNCC 194779 on microbial community, cell wall polysaccharide characteristics, cell wall degrading enzymes, and microstructure during Chinese Dongbei suancai fermentation. The results showed that Lactobacillus (98.75%) was the dominant genus during fermentation of Dongbei suancai. The principal coordinates analysis (PCoA) suggested that inoculation with Lactobacillus promoted the stability of microbial community structure during Chinese Dongbei suancai fermentation. Besides, the lower content in cellulose (80.28 ± 2.61 ug/mg) and pectin (53.56 ± 2.67 ug/mg) observed in the inoculated fermented suancai. Simultaneously, the inoculated fermented suancai had the most decreases in SR 1 (70.35%) and SR 3 (72.06%) and the most increase in SR 2 (950%), which suggested that inoculation intensified the decrease of the linearity and the RG-1 branching degree of pectin. The contents of polygalacturonase (PG) and pectin methylesterase (PME) in inoculated fermented suancai were 21.06% and 21.86% higher than those in naturally fermented suancai. In addition, the surface of suancai leaves gradually changed from smooth to rough during fermentation, which was accelerated by inoculation. Moreover, Lactobacillus, Aspergillus, Wallemia and Mucor were all negatively correlated with cellulose and GalA. These results revealed that inoculation promoted the formation of dominant genus structure during suancai fermentation, changed the effects of enzymes on the degradation of cell wall components, thereby accelerated the formation of Chinese Dongbei suancai texture.
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Affiliation(s)
- Xiao Li
- Institute of Food and Processing, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China.
| | - Yanqiu Han
- Institute of Food and Processing, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
| | - Xingzhuang Wu
- Institute of Food and Processing, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
| | - Lifeng Li
- Institute of Food and Processing, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
| | - Rui Zhang
- Institute of Food and Processing, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
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Tian G, Huo M, Yang X, Mao K, Liu X, Sang Y, Li J. Amino acid regulated citrus pectin-based emulsion stability mediated by pH. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:6912-6919. [PMID: 37319235 DOI: 10.1002/jsfa.12788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 05/16/2023] [Accepted: 06/15/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Citrus residuals are rich in nutrients like pectin, essential oil, and amino acids, which are wasted in the food industry. Moreover, citrus components often coexist with amino acids during emulsion preparation and application. RESULTS Adding glutamic or arginine after emulsification resulted in a stable emulsion compared with adding them before emulsification. Adding glycine before or after emulsification had no effect on the emulsion stability. Emulsion stability was improved by adding glutamic acid at pH 6. Ionic interaction and hydrogen bonding were the main forms of bonding. The rhamnogalacturonan II domain was the potential binding site for the amino acids. CONCLUSIONS The emulsions prepared by adding acidic amino acids or basic amino acids after emulsification were stable relative to those in which the amino acids were added before emulsification. However, the order in which neutral amino acids were added did not affect the emulsion stability after storage for 7 days. With an increase in the pH level, droplet size increased and emulsion stability decreased. All the results could be attributed to changes in the structure and properties of citrus pectin, as well as the interaction between citrus pectin and amino acids. This study may expand the application of citrus-derived emulsions in the food industry. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Guifang Tian
- College of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | - Man Huo
- College of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | - Xiaohan Yang
- College of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | - Kemin Mao
- College of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | - Xiaohan Liu
- College of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | - Yaxin Sang
- College of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | - Jiangtao Li
- College of Life Sciences, Hebei Agricultural University, Baoding, China
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Liu R, Shang F, Niu B, Wu W, Han Y, Chen H, Gao H. Melatonin treatment delays the softening of blueberry fruit by modulating cuticular wax metabolism and reducing cell wall degradation. Food Res Int 2023; 173:113357. [PMID: 37803698 DOI: 10.1016/j.foodres.2023.113357] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/30/2023] [Accepted: 08/03/2023] [Indexed: 10/08/2023]
Abstract
The effects of postharvest melatonin (MT) treatment on cuticular wax and cell wall metabolism in blueberry fruit (Vaccinium spp.) were evaluated. The results revealed that MT treatment maintained the cuticular wax rod-like structure and delayed wax degradation. The gas chromatography-mass spectrometry analysis results revealed that MT application changed the cuticular wax composition in blueberries, and 25 metabolic components were screened. The metabolic regulation of wax quality in blueberry fruit may therefore be influenced by MT. Additionally, MT slowed down pectin and cellulose degradation by reducing the activities of cell wall degrading enzymes like pectin methyl esterase polygalacturonase, β-galactosidase, and cellulose in the later stages of storage. It also downregulated the transcriptional expression of related genes like VcPE, VcPG, VcBG6, and VcGAL1. Thus, MT prevented softening and senescence by postponing the degradation of the cell wall in postharvest blueberry fruit.
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Affiliation(s)
- Ruiling Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Postharvest Preservation and Processing of Vegetables (Co-construction by Ministry and Province), Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Key Laboratory of Postharvest Preservation and Processing of Fruits and Vegetables, China National Light Industry, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Fanchen Shang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Postharvest Preservation and Processing of Vegetables (Co-construction by Ministry and Province), Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Key Laboratory of Postharvest Preservation and Processing of Fruits and Vegetables, China National Light Industry, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Ben Niu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Postharvest Preservation and Processing of Vegetables (Co-construction by Ministry and Province), Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Key Laboratory of Postharvest Preservation and Processing of Fruits and Vegetables, China National Light Industry, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Weijie Wu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Postharvest Preservation and Processing of Vegetables (Co-construction by Ministry and Province), Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Key Laboratory of Postharvest Preservation and Processing of Fruits and Vegetables, China National Light Industry, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yanchao Han
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Postharvest Preservation and Processing of Vegetables (Co-construction by Ministry and Province), Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Key Laboratory of Postharvest Preservation and Processing of Fruits and Vegetables, China National Light Industry, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Hangjun Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Postharvest Preservation and Processing of Vegetables (Co-construction by Ministry and Province), Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Key Laboratory of Postharvest Preservation and Processing of Fruits and Vegetables, China National Light Industry, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Haiyan Gao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Postharvest Preservation and Processing of Vegetables (Co-construction by Ministry and Province), Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Key Laboratory of Postharvest Preservation and Processing of Fruits and Vegetables, China National Light Industry, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou, China.
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Li X, Martín-Pizarro C, Zhou L, Hou B, Wang Y, Shen Y, Li B, Posé D, Qin G. Deciphering the regulatory network of the NAC transcription factor FvRIF, a key regulator of strawberry (Fragaria vesca) fruit ripening. THE PLANT CELL 2023; 35:4020-4045. [PMID: 37506031 PMCID: PMC10615214 DOI: 10.1093/plcell/koad210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/30/2023] [Accepted: 07/02/2023] [Indexed: 07/30/2023]
Abstract
The NAC transcription factor ripening inducing factor (RIF) was previously reported to be necessary for the ripening of octoploid strawberry (Fragaria × ananassa) fruit, but the mechanistic basis of RIF-mediated transcriptional regulation and how RIF activity is modulated remains elusive. Here, we show that FvRIF in diploid strawberry, Fragaria vesca, is a key regulator in the control of fruit ripening and that knockout mutations of FvRIF result in a complete block of fruit ripening. DNA affinity purification sequencing coupled with transcriptome deep sequencing suggests that 2,080 genes are direct targets of FvRIF-mediated regulation, including those related to various aspects of fruit ripening. We provide evidence that FvRIF modulates anthocyanin biosynthesis and fruit softening by directly regulating the related core genes. Moreover, we demonstrate that FvRIF interacts with and serves as a substrate of MAP kinase 6 (FvMAPK6), which regulates the transcriptional activation function of FvRIF by phosphorylating FvRIF at Thr-310. Our findings uncover the FvRIF-mediated transcriptional regulatory network in controlling strawberry fruit ripening and highlight the physiological significance of phosphorylation modification on FvRIF activity in ripening.
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Affiliation(s)
- Xiaojing Li
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093,China
- China National Botanical Garden, Beijing 100093,China
- University of Chinese Academy of Sciences, Beijing 100049,China
| | - Carmen Martín-Pizarro
- Instituto de Hortofruticultura Subtropical y Mediterránea (IHSM), Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, UMA, Málaga 29071,Spain
| | - Leilei Zhou
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093,China
- China National Botanical Garden, Beijing 100093,China
| | - Bingzhu Hou
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093,China
| | - Yuying Wang
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093,China
- China National Botanical Garden, Beijing 100093,China
| | - Yuanyue Shen
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206,China
| | - Bingbing Li
- College of Horticulture, China Agricultural University, Beijing 100193,China
| | - David Posé
- Instituto de Hortofruticultura Subtropical y Mediterránea (IHSM), Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, UMA, Málaga 29071,Spain
| | - Guozheng Qin
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093,China
- China National Botanical Garden, Beijing 100093,China
- University of Chinese Academy of Sciences, Beijing 100049,China
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Guo T, Li J, Guo M, Yang Q, Dai X, Qiao X, Song Z, Tian C, Li Y, Ge H, Cheng J, Liang M. Low temperature inhibits pectin degradation by PpCBFs to prolong peach storage time. J Food Sci 2023; 88:3725-3736. [PMID: 37548624 DOI: 10.1111/1750-3841.16731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/07/2023] [Accepted: 07/19/2023] [Indexed: 08/08/2023]
Abstract
Low-temperature storage is a widely used method for peach fruit storage. However, the impact of PpCBFs on pectin degradation during low-temperature storage is unclear. As such, in this study, we stored the melting-flesh peach cultivar "Fuli" at low temperature (LT, 6°C) and room temperature (RT, 25°C) to determine the effect of different temperatures on its physiological and biochemical changes. Low-temperature storage can inhibit the softening of "Fuli" peaches by maintaining the stability of the cell wall. It was found that the contents of water-soluble pectin and ionic-soluble pectin in peach fruit stored at RT were higher than those stored at LT. The enzyme activities of polygalacturonase (PG), pectate lyase (PL), and pectin methylesterase (PME) were all inhibited by LT. The expressions of PpPME3, PpPL2, and PpPG were closely related to fruit firmness, but PpCBF2 and PpCBF3 showed higher expression levels at LT than RT. The promoters of PpPL2 and PpPG contain the DER motif, which suggested that PpCBF2 and PpCBF3 might negatively regulate their expression by directly binding to their promoters. These results indicated that LT may maintain firmness by activating PpCBFs to repress pectin-degradation-related enzyme genes during storage.
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Affiliation(s)
- Tingting Guo
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Jianzhao Li
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
| | - Meiling Guo
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Qi Yang
- Linyi Inspection and Testing Center, Linyi, Shandong, China
| | - Xiaonan Dai
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Xuqiang Qiao
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Zhizhong Song
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
| | - Changping Tian
- Yantai Academy of Agricultural Sciences, Yantai, Shandong, China
| | - Yanju Li
- Yantai Academy of Agricultural Sciences, Yantai, Shandong, China
| | - Hang Ge
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
| | - Jieshan Cheng
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
| | - Meixia Liang
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
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Shi H, Zhou WH, Xu YY, He XE, He FY, Wang Y. Effect of calcium spray at flowering combined with post-harvest 1-MCP treatment on the preservation of grapes. Heliyon 2023; 9:e19918. [PMID: 37809379 PMCID: PMC10559319 DOI: 10.1016/j.heliyon.2023.e19918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 09/05/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023] Open
Abstract
These tests were carried out to find out how calcium and 1-MCP treatment affected the preservation of grapes, as grapes are highly susceptible to decay during post-harvest storage. The grapes were treated with 5 g/L calcium at the flowering stage, followed by 1 μL/L 1-MCP treatment after harvesting. When grapevines were treated with a combination of calcium and 1-MCP, the marketable fruit rate (At day 56 of storage, the 1-MCP + Ca2+ treatment group was still 93%, an increase of 29.03% compared to the control group.) and quality improved (At day 28 of storage, the VC content of the 1-MCP + Ca2+ treated group was 4.35 mg/100g, an increase of 25.01% compared to the control group.), while the fruit weight loss rate decreased (At day 56 of storage, the weight loss of the control group was 6.97%, an increase of 39.43% compared to the 1-MCP + Ca2+ treated group.). According to the experimental results, there are several reasons for this. First, in the early stages of fruit storage, the concentration of soluble pectin and soluble fiber, as well as the activities of pectinase and cellulase (related gene levels) were decreased. Secondly, the activity of antioxidant enzymes was increased, while MDA content was decreased. Third, during fruit storage, the respiratory intensity and ethylene release rate were reduced, as was the activity of energy metabolism enzymes. As a result, the aging and deterioration of the fruit during storage were delayed. Principal component analysis revealed that the calcium and 1-MCP combination therapy slowed the decline in grape berry quality, followed by the calcium-treated and 1-MCP-treated fruits. In contrast, grape berry quality declined the most rapidly in the control group.
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Affiliation(s)
- Hao Shi
- College of Life and Environmental Science, Hunan University of Arts and Science, Changde, China
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, China
- College of Agriculture and Forestry Science, Hunan Applied technology University, Changde, China
| | - Wen hua Zhou
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, China
| | - Yin yu Xu
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, China
| | - Xiao e He
- College of Agriculture and Forestry Science, Hunan Applied technology University, Changde, China
| | - Fu yin He
- College of Agriculture and Forestry Science, Hunan Applied technology University, Changde, China
| | - Yun Wang
- College of Life and Environmental Science, Hunan University of Arts and Science, Changde, China
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, China
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Lin Y, He H, Wen Y, Cao S, Wang Z, Sun Z, Zhang Y, Wang Y, He W, Li M, Chen Q, Zhang Y, Luo Y, Wang X, Tang H. Comprehensive Analysis of the Pectate Lyase Gene Family and the Role of FaPL1 in Strawberry Softening. Int J Mol Sci 2023; 24:13217. [PMID: 37686025 PMCID: PMC10488268 DOI: 10.3390/ijms241713217] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/17/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
Fruit softening is a crucial factor that controls shelf life and commercial value. Pectate lyase (PL) has a major role in strawberry fruit softening. However, the PL gene family in strawberry has not been comprehensively analyzed. In this study, 65 FaPL genes were identified in the octoploid strawberry genome. Subcellular localization prediction indicated that FaPLs are mostly localized to the extracellular and cytoplasmic spaces. Duplication event analysis suggested that FaPL gene family expansion is mainly driven by whole genome or segmental duplication. The FaPL family members were classified into six groups according to the phylogenetic analysis. Among them, FaPL1, 3, 5, 20, 25, 42, and 57 had gradually increased expressions during strawberry fruit development and ripening and higher expression levels in the fruits with less firmness than that in firmer fruit. This result suggested that these members are involved in strawberry softening. Furthermore, overexpression of FaPL1 significantly reduced the fruit firmness, ascorbic acid (AsA), and malondialdehyde (MDA) content but obviously increased the anthocyanins, soluble proteins, and titratable acidity (TA), while it had no apparent effects on flavonoids, phenolics, and soluble sugar content. These findings provide basic information on the FaPL gene family for further functional research and indicate that FaPL1 plays a vital role in strawberry fruit softening.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Haoru Tang
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.)
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Li J, Guo T, Guo M, Dai X, Xu X, Li Y, Song Z, Liang M. Exogenous BR delayed peach fruit softening by inhibiting pectin degradation enzyme genes. FRONTIERS IN PLANT SCIENCE 2023; 14:1226921. [PMID: 37600192 PMCID: PMC10436216 DOI: 10.3389/fpls.2023.1226921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 07/19/2023] [Indexed: 08/22/2023]
Abstract
Peach fruit deteriorates and senesces rapidly when stored at room temperature. Brassinosteroids (BRs) play an important role in regulating plant growth and development and maintaining fruit quality. However, little information is available on the effect of BRs on the senescence of harvested peach fruit. In this study, different concentrations of BR were used to treat 'Hongniang' peach fruit, and the results showed that 10 μM BR was the most beneficial concentration to delay the senescence of peach fruits. BR treatment delayed the decrease of fruit firmness, the release of ethylene, the increase in water-soluble pectin (WSP) and ionic-soluble pectin (ISP) content and the decrease in covalently bound pectin (CBP) content, inhibited the activities of pectin degradation enzymes, and inhibited the gene expression of PpPME1/3, PpPG, PpARF2, and PpGAL2/16. In addition, BR treatment also inhibited the expression of PpBES1-5/6. Cis-acting regulatory element analysis of pectin degradation enzyme promoters showed that many of them contained BES1 binding elements. All the above results showed that BR treatment had a positive effect on delaying the senescence of peach fruit and prolonging its storage period.
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Affiliation(s)
- Jianzhao Li
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Tingting Guo
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Meiling Guo
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Xiaonan Dai
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Xiaofei Xu
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Yanju Li
- Yantai Academy of Agricultural Sciences, Yantai, Shandong, China
| | - Zhizhong Song
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Meixia Liang
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
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Wei Y, Liu Z, Lv T, Xu Y, Wei Y, Liu W, Liu L, Wang A, Li T. Ethylene enhances MdMAPK3-mediated phosphorylation of MdNAC72 to promote apple fruit softening. THE PLANT CELL 2023; 35:2887-2909. [PMID: 37132483 PMCID: PMC10396387 DOI: 10.1093/plcell/koad122] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 03/21/2023] [Accepted: 04/10/2023] [Indexed: 05/04/2023]
Abstract
The phytohormone ethylene plays an important role in promoting the softening of climacteric fruits, such as apples (Malus domestica); however, important aspects of the underlying regulatory mechanisms are not well understood. In this study, we identified apple MITOGEN-ACTIVATED PROTEIN KINASE 3 (MdMAPK3) as an important positive regulator of ethylene-induced apple fruit softening during storage. Specifically, we show that MdMAPK3 interacts with and phosphorylates the transcription factor NAM-ATAF1/2-CUC2 72 (MdNAC72), which functions as a transcriptional repressor of the cell wall degradation-related gene POLYGALACTURONASE1 (MdPG1). The increase in MdMAPK3 kinase activity was induced by ethylene, which promoted the phosphorylation of MdNAC72 by MdMAPK3. Additionally, MdPUB24 functions as an E3 ubiquitin ligase to ubiquitinate MdNAC72, resulting in its degradation via the 26S proteasome pathway, which was enhanced by ethylene-induced phosphorylation of MdNAC72 by MdMAPK3. The degradation of MdNAC72 increased the expression of MdPG1, which in turn promoted apple fruit softening. Notably, using variants of MdNAC72 that were mutated at specific phosphorylation sites, we observed that the phosphorylation state of MdNAC72 affected apple fruit softening during storage. This study thus reveals that the ethylene-MdMAPK3-MdNAC72-MdPUB24 module is involved in ethylene-induced apple fruit softening, providing insights into climacteric fruit softening.
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Affiliation(s)
- Yun Wei
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture (Ministry of Education), Shenyang Agricultural University, Shenyang 110866, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang Agricultural University, Shenyang 110866, China
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Zhi Liu
- Liaoning Institute of Pomology, Xiongyue 115009, China
| | - Tianxing Lv
- Liaoning Institute of Pomology, Xiongyue 115009, China
| | - Yaxiu Xu
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture (Ministry of Education), Shenyang Agricultural University, Shenyang 110866, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang Agricultural University, Shenyang 110866, China
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Yajing Wei
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture (Ministry of Education), Shenyang Agricultural University, Shenyang 110866, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang Agricultural University, Shenyang 110866, China
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Weiting Liu
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture (Ministry of Education), Shenyang Agricultural University, Shenyang 110866, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang Agricultural University, Shenyang 110866, China
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Li Liu
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture (Ministry of Education), Shenyang Agricultural University, Shenyang 110866, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang Agricultural University, Shenyang 110866, China
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Aide Wang
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture (Ministry of Education), Shenyang Agricultural University, Shenyang 110866, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang Agricultural University, Shenyang 110866, China
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Tong Li
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture (Ministry of Education), Shenyang Agricultural University, Shenyang 110866, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang Agricultural University, Shenyang 110866, China
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
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Lazarus BS, Leung V, Luu RK, Wong MT, Ruiz-Pérez S, Barbosa WT, Bezerra WBA, Barbosa JDV, Meyers MA. Jackfruit: Composition, structure, and progressive collapsibility in the largest fruit on the Earth for impact resistance. Acta Biomater 2023; 166:430-446. [PMID: 37121367 DOI: 10.1016/j.actbio.2023.04.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/17/2023] [Accepted: 04/26/2023] [Indexed: 05/02/2023]
Abstract
The jackfruit is the largest fruit on the Earth, reaching upwards of 35 kg and falling from heights of 25 m. To survive such high energy impacts, it has evolved a unique layered configuration with a thorny exterior and porous tubular underlayer. During compression, these layers exhibit a progressive collapse mechanism where the tubules are first to deform, followed by the thorny exterior, and finally the mesocarp layer in between. The thorns are composed of lignified bundles which run longitudinally from the base of the thorn to the tip and are embedded in softer parenchymal cells, forming a fiber reinforced composite. The mesocarp contains more lignin than any of the other layers while the core appears to contain more pectin giving rise to variations in compressive and viscoelastic properties between the layers. The surface thorns provide a compelling impact-resistant feature for bioinspiration, with a cellular structure that can withstand large deformation without failing and wavy surface features which densify during compression without fracturing. Even the conical shape of the thorns is valuable, presenting a gradually increasing surface area during axial collapse. A simplified model of this mechanism is put forward to describe the force response of these features. The thorns also distribute damage laterally during impact and deflect cracks along their interstitial valleys. These phenomena were observed in 3D printed, jackfruit-inspired designs which performed markedly better than control prints with the same mass. STATEMENT OF SIGNIFICANCE: Many biological materials have evolved remarkable structures that enhance their mechanical performance and serve as sources of inspiration for engineers. Plants are often overlooked in this regard yet certain botanical components, like nuts and fruit, have shown incredible potential as blueprints for improved impact resistant designs. The jackfruit is the largest fruit on Earth and generates significant falling impact energies. Here, we explore the jackfruit's structure and its mechanical capabilities for the first time. The progressive failure imparted by its multilayered design and the unique collapse mode of the surface thorns are identified as key mechanisms for improving the fruit's impact resistance. 3D printing is used to show that these structure-property benefits can be successfully transferred to engineering materials.
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Affiliation(s)
- Benjamin S Lazarus
- Materials Science and Engineering Program, University of California San Diego, USA.
| | - Victor Leung
- Department of Mechanical and Aerospace Engineering, University of California San Diego, USA
| | - Rachel K Luu
- Department of Mechanical and Aerospace Engineering, University of California San Diego, USA; Department of Materials Science and Engineering, Massachusetts Institute of Technology, USA
| | - Matthew T Wong
- Department of Nanoengineering, University of California San Diego, USA
| | - Samuel Ruiz-Pérez
- Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Willams T Barbosa
- Department of Materials, University Center SENAI CIMATEC, Salvador, Brazil
| | - Wendell B Almeida Bezerra
- Department of Materials Science, Military Institute of Engineering-IME, Rio de Janeiro 22290270, Brazil
| | | | - Marc A Meyers
- Materials Science and Engineering Program, University of California San Diego, USA; Department of Mechanical and Aerospace Engineering, University of California San Diego, USA; Department of Nanoengineering, University of California San Diego, USA
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40
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Cheng JH, He L, Sun DW, Pan Y, Ma J. Inhibition of cell wall pectin metabolism by plasma activated water (PAW) to maintain firmness and quality of postharvest blueberry. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107803. [PMID: 37406406 DOI: 10.1016/j.plaphy.2023.107803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/21/2023] [Accepted: 05/29/2023] [Indexed: 07/07/2023]
Abstract
Blueberry is a class of berries with high nutritional and economic value but has short shelf life due to its rapid softening at room temperature. This study investigated the effects of plasma-activated water (PAW) treatment on the softening quality and cell wall pectin metabolism of blueberries stored for 10 d at 25 °C after being immersed in PAW for 10 min. PAW was generated by plasma with different times (1 and 2 min), fixed frequency (10 kHz) and fixed voltage (50 kV). The analysis showed that the firmness of PAW-treated fruit significantly increased (P < 0.05) by 36.4% after 10 d storage. PAW treatment controlled the solubilization of pectin from water-insoluble to water-soluble. The activities of cell wall pectin-degrading enzymes like polygalacturonase (PG), β-galactosidase (β-Gal) and pectin methylesterase (PME) in PAW-treated blueberries decreased by 15.7%, 18.3%, and 27.9%, respectively, on day 10. After PAW treatment, blueberries also maintained better postharvest quality (firmness, colour, soluble solid content and anthocyanin content) and intact epidermal waxy and cell wall structure. These results suggested that PAW showed great potential for postharvest fresh-keeping of blueberry.
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Affiliation(s)
- Jun-Hu Cheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Ling He
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Da-Wen Sun
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Food Refrigeration and Computerized Food Technology (FRCFT), Agriculture and Food Science Centre, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland.
| | - Yawen Pan
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Ji Ma
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
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Wang Y, Ma L, Ma Y, Tian T, Zhang J, Wang H, Liu Z, Chen Q, He W, Lin Y, Zhang Y, Li M, Yang S, Zhang Y, Luo Y, Tang H, Wang X. Comparative physiological and transcriptomic analyses provide insights into fruit softening in Chinese cherry [ Cerasus pseudocerasus (Lindl.) G.Don]. FRONTIERS IN PLANT SCIENCE 2023; 14:1190061. [PMID: 37528967 PMCID: PMC10388103 DOI: 10.3389/fpls.2023.1190061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 07/03/2023] [Indexed: 08/03/2023]
Abstract
Fruit softening is a complex, genetically programmed and environmentally regulated process, which undergoes biochemical and physiological changes during fruit development. The molecular mechanisms that determine these changes in Chinese cherry [Cerasus peseudocerasus (Lindl.) G.Don] fruits are still unknown. In the present study, fruits of hard-fleshed 'Hongfei' and soft-fleshed 'Pengzhoubai' varieties of Chinese cherry were selected to illustrate the fruit softening at different developmental stages. We analyzed physiological characteristics and transcriptome profiles to identify key cell wall components and candidate genes related to fruit softening and construct the co-expression networks. The dynamic changes of cell wall components (cellulose, hemicellulose, pectin, and lignin), the degrading enzyme activities, and the microstructure were closely related to the fruit firmness during fruit softening. A total of 6,757 and 3,998 differentially expressed genes (DEGs) were screened between stages and varieties, respectively. Comprehensive functional enrichment analysis supported that cell wall metabolism and plant hormone signal transduction pathways were involved in fruit softening. The majority of structural genes were significantly increased with fruit ripening in both varieties, but mainly down-regulated in Hongfei fruits compared with Pengzhoubai, especially DEGs related to cellulose and hemicellulose metabolism. The expression levels of genes involving lignin biosynthesis were decreased with fruit ripening, while mainly up-regulated in Hongfei fruits at red stage. These obvious differences might delay the cell all degrading and loosening, and enhance the cell wall stiffing in Hongfei fruits, which maintained a higher level of fruit firmness than Pengzhoubai. Co-expressed network analysis showed that the key structural genes were correlated with plant hormone signal genes (such as abscisic acid, auxin, and jasmonic acid) and transcription factors (MADS, bHLH, MYB, ERF, NAC, and WRKY). The RNA-seq results were supported using RT-qPCR by 25 selected DEGs that involved in cell wall metabolism, hormone signal pathways and TF genes. These results provide important basis for the molecular mechanism of fruit softening in Chinese cherry.
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Affiliation(s)
- Yan Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Key Laboratory of Agricultural Bioinformatics, Ministry of Education, Chengdu, Sichuan, China
| | - Lan Ma
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yan Ma
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Tai Tian
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Jing Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Hao Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Zhenshan Liu
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Qing Chen
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Key Laboratory of Agricultural Bioinformatics, Ministry of Education, Chengdu, Sichuan, China
| | - Wen He
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Key Laboratory of Agricultural Bioinformatics, Ministry of Education, Chengdu, Sichuan, China
| | - Yuanxiu Lin
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yunting Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Mengyao Li
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Shaofeng Yang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yong Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ya Luo
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Haoru Tang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xiaorong Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Key Laboratory of Agricultural Bioinformatics, Ministry of Education, Chengdu, Sichuan, China
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Liu D, Zhou W, Zhong Y, Xie X, Liu H, Huang H, Wang Q, Xiao G. Involvement of branched RG-I pectin with hemicellulose in cell-cell adhesion of tomato during fruit softening. Food Chem 2023; 413:135574. [PMID: 36739644 DOI: 10.1016/j.foodchem.2023.135574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 12/25/2022] [Accepted: 01/23/2023] [Indexed: 01/28/2023]
Abstract
Cell adhesion of four cultivars of tomato fruit, "Micro Tom (MT)", "Heinz 1706 (H1706)", "Money Maker (MM)", "Ailsa Craig (AC)" were evaluated and cell walls were analyzed in order to assess the possible contribution of pectic and hemicellulosic polysaccharides to the softening and altered cell adhesion at two different stages of ripeness. Cell wall material (CWM) and solubilised fractions of green and red ripe fruit were analyzed by chemical, enzymatic techniques. In comparison with the four cultivars of tomato fruits, H1706 and MM are harder than MT and AC at both green and red ripe stage. The ripening-associated solubilisation of rhamnogalacturonan-riched pectic polysaccharides was reduced in H1706 and MM, and the content of side -chain sugars from RG-I reduced by more than 50% in MT and AC. In addition to recognized pectic modifying enzymes, RGase had a good effect on cell separation of H1706 and MM fruit at red ripe stage. The higher RG-I content and branching degree have been associated with increased cell adhesion and reduced cell wall porosity, thus maintained fruit firmness.
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Affiliation(s)
- Dongjie Liu
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, PR China; Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food of Ministry and Rural Affairs, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Weiwei Zhou
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, PR China; Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food of Ministry and Rural Affairs, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Yuming Zhong
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, PR China
| | - Xi Xie
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, PR China; Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food of Ministry and Rural Affairs, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Huifan Liu
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, PR China; Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food of Ministry and Rural Affairs, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Hua Huang
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, PR China.
| | - Qin Wang
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, PR China; Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food of Ministry and Rural Affairs, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
| | - Gengsheng Xiao
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, PR China; Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food of Ministry and Rural Affairs, College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
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Wang Y, Fan Z, Zhai Y, Huang H, Vainstein A, Ma H. Polygalacturonase gene family analysis identifies FcPG12 as a key player in fig (Ficus carica L.) fruit softening. BMC PLANT BIOLOGY 2023; 23:320. [PMID: 37316788 DOI: 10.1186/s12870-023-04315-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 05/25/2023] [Indexed: 06/16/2023]
Abstract
BACKGROUND The fig (Ficus carica L.) tree has high economic value. However, its fruit have a short shelf life due to rapid softening. Polygalacturonases (PGs) are essential hydrolases, responsible for the pectin degradation that plays a key role in fruit softening. However, fig PG genes and their regulators have not yet been characterized. RESULTS In this study, 43 FcPGs were identified in the fig genome. They were non-uniformly distributed on 13 chromosomes, and tandem repeat PG gene clusters were found on chromosomes 4 and 5. Ka/Ks calculation and collinear analysis indicated negative selection as the main driver of FcPG family expansion. Fourteen FcPGs were found expressed in fig fruit with FPKM values > 10, of which seven were positively correlated, and three, negatively correlated with fruit softening. Eleven FcPGs were upregulated and two downregulated in response to ethephon treatment. FcPG12, a member of the tandem repeat cluster on chromosome 4, was selected for further analyses due to its sharp increment in transcript abundance during fruit softening and its response to ethephon treatment. Transient overexpression of FcPG12 led to decreased fig fruit firmness and increased PG enzyme activity in the tissue. Two ethylene response factor (ERF)-binding GCC-box sites were found on the FcPG12 promoter. Yeast one-hybrid and dual luciferase assays showed that FcERF5 binds directly to the FcPG12 promoter and upregulates its expression. Transient overexpression of FcERF5 upregulated FcPG12 expression, thereby increasing PG activity and fruit softening. CONCLUSIONS Our study identified FcPG12 as a key PG gene in fig fruit softening, and its direct positive regulation by FcERF5. The results provide new information on the molecular regulation of fig fruit softening.
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Affiliation(s)
- Yuan Wang
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Zhiyi Fan
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yanlei Zhai
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Hantang Huang
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Alexander Vainstein
- The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Huiqin Ma
- College of Horticulture, China Agricultural University, Beijing, 100193, China.
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44
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He Y, Wu Q, Cui C, Tian Q, Zhang D, Zhang Y. ChIP-Seq Analysis of SlAREB1 Downstream Regulatory Network during Tomato Ripening. Foods 2023; 12:2357. [PMID: 37372568 DOI: 10.3390/foods12122357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/02/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
SlAREB1, a member of the abscisic acid (ABA) response element-binding factors (AREB/ABFs) family, was reported to play a crucial role in the expression of ABA-regulated downstream genes and affect the ripening of tomato fruit. However, the downstream genes of SlAREB1 are still unclear. Chromatin immunoprecipitation (ChIP) is a powerful tool and a standard method for studying the interactions between DNA and proteins at the genome-wide level. In the present study, SlAREB1 was proved to continually increase until the mature green stage and then decrease during the ripening period, and a total of 972 gene peaks were identified downstream of SlAREB1 by ChIP-seq analysis, mainly located in the intergenic and promoter regions. Further gene ontology (GO) annotation analysis revealed that the target sequence of SlAREB1 was the most involved in biological function. Kyoto Encylopaedia of Genes and Genomes (KEGG) pathway analysis showed that the identified genes were mainly involved in the oxidative phosphorylation and photosynthesis pathways, and some of them were associated with tomato phytohormone synthesis, the cell wall, pigment, and the antioxidant characteristic of the fruit as well. Based on these results, an initial model of SlAREB1 regulation on tomato fruit ripening was constructed, which provided a theoretical basis for further exploring the effects of the regulation mechanism of SlAREB1 and ABA on tomato fruit ripening.
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Affiliation(s)
- Yanan He
- Engineering Center of Ministry of Education, School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, China
| | - Qiong Wu
- Engineering Center of Ministry of Education, School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, China
| | - Chunxiao Cui
- Engineering Center of Ministry of Education, School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, China
| | - Qisheng Tian
- Engineering Center of Ministry of Education, School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, China
| | - Dongdong Zhang
- Engineering Center of Ministry of Education, School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, China
| | - Yurong Zhang
- Engineering Center of Ministry of Education, School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, China
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45
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You S, Jiang M, Lan W, Chen M, Bai B, Zhang L, Tu K, Song L, Pan L. Assessment of the optical properties with physicochemical properties and cell wall polysaccharides of 'Korla' pear flesh during Alternaria alternata-induced disease development. Food Chem 2023; 409:135302. [PMID: 36623358 DOI: 10.1016/j.foodchem.2022.135302] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 12/06/2022] [Accepted: 12/21/2022] [Indexed: 12/25/2022]
Abstract
Cell wall polysaccharides and physicochemical properties are the major quality characteristics of fruit, but they are significantly affected by the postharvest disease. In this study, the influence of Alternaria alternata-induced disease on the contents of cell wall polysaccharides and physicochemical properties in 'Korla' pear flesh during storage, as well as their relationships of the optical absorption (μa) and reduced scattering (μs') were explored. The infected pear had lower individual sugars, covalent-soluble pectin, cellulose and hemicellulose contents than the healthy ones. The successive decreases of μa and increases of μs' in pears were observed while the process of pathogen infection. Path-coefficient analysis indicated the ionic-soluble pectin was the main reason responsible for the change of μs' in infected pear at 675 nm and 980 nm. This study indicated the optical properties have the possibility to present the physicochemical characteristics and cell wall polysaccharides of pears during postharvest pathogen infection.
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Affiliation(s)
- Sicong You
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Mengwei Jiang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Weijie Lan
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Mingrui Chen
- Nantes Université, Ecole Doctorale Ecologie Géosciences Agronomie ALimentation, Nantes, France
| | - Bingyao Bai
- College of Life Science, Tarim University, Alaer 843300, China
| | - Li Zhang
- College of Life Science, Tarim University, Alaer 843300, China; College of Food and Biological Engineering, Bengbu University, Bengbu 233030, Anhui, China
| | - Kang Tu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Lijun Song
- College of Life Science, Tarim University, Alaer 843300, China; College of Food and Biological Engineering, Bengbu University, Bengbu 233030, Anhui, China.
| | - Leiqing Pan
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China; Sanya Institute of Nanjing Agricultural University, Sanya, Hainan 572024, China.
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46
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Sun PP, Liu Y, Wang W, Song GJ, Ren YY. Regulation mechanism of magnetic field on pectinase and its preliminary application in postharvest sapodilla (Manilkara zapota). Food Chem 2023; 409:135300. [PMID: 36592602 DOI: 10.1016/j.foodchem.2022.135300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/26/2022] [Accepted: 12/21/2022] [Indexed: 12/25/2022]
Abstract
In this study, regulation mechanism of magnetic field on pectinase was investigated and it was preliminarily applied in postharvest sapodilla. Results indicated pectinase activity decreased by 44 % when treated by magnetic field (3 mT, 0.5 h) with kinetic parameters Vmax/Km decreasing from 0.799 to 0.366 min. The optimal temperature (48 °C) and pH (4.8) of pectinase was not altered by magnetic field but Ca2+ at 0.05 mol/L strengthened its regulation effect. Ultraviolet and fluorescence spectra suggested tyrosine and tryptophan residues in treated pectinase became more hydrophobic while opposite in phenylalanine. CO, CNH, COO- groups in pectinase were also influenced, resulting in decreased β-sheet (from 53 % to 49 %), increased random coil (from 20 % to 22 %) and β-turn content (from 27 % to 29 %). More importantly, the firmness of treated sapodilla remained 45 % of maximum at 12 days' storage. Our findings provided new insights to illustrate the role of magnetic field in fruit preservation.
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Affiliation(s)
- Peng-Peng Sun
- College of Life Science, Yangtze University, Jingzhou, Hubei 434023, PR China; Institute of Food Science and Technology, Yangtze University, Jingzhou, Hubei 434023, PR China
| | - Ying Liu
- College of Life Science, Yangtze University, Jingzhou, Hubei 434023, PR China
| | - Wei Wang
- College of Life Science, Yangtze University, Jingzhou, Hubei 434023, PR China
| | - Guo-Jun Song
- College of Life Science, Yangtze University, Jingzhou, Hubei 434023, PR China
| | - Yuan-Yuan Ren
- College of Life Science, Yangtze University, Jingzhou, Hubei 434023, PR China; Institute of Food Science and Technology, Yangtze University, Jingzhou, Hubei 434023, PR China.
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47
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Ma Y, Wang C, Gao Z, Yao Y, Kang H, Du Y. VvPL15 Is the Core Member of the Pectate Lyase Gene Family Involved in Grape Berries Ripening and Softening. Int J Mol Sci 2023; 24:ijms24119318. [PMID: 37298267 DOI: 10.3390/ijms24119318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 05/09/2023] [Accepted: 05/19/2023] [Indexed: 06/12/2023] Open
Abstract
The process of ripening and softening in grape begins at veraison and is closely related to the depolymerization of pectin components. A variety of enzymes are involved in pectin metabolism and one class of enzyme, pectin lyases (PLs), have been reported to play an important role in softening in many fruits; however, little information is available on the VvPL gene family in grape. In this study, 16 VvPL genes were identified in the grape genome using bioinformatics methods. Among them, VvPL5, VvPL9, and VvPL15 had the highest expression levels during grape ripening, which suggests that these genes are involved in grape ripening and softening. Furthermore, overexpression of VvPL15 affects the contents of water-soluble pectin (WSP) and acid-soluble pectin (ASP) in the leaves of Arabidopsis and significantly changes the growth of Arabidopsis plants. The relationship between VvPL15 and pectin content was further determined by antisense expression of VvPL15. In addition, we also studied the effect of VvPL15 on fruit in transgenic tomato plants, which showed that VvPL15 accelerated fruit ripening and softening. Our results indicate that VvPL15 plays an important role in grape berry softening during ripening by depolymerizing pectin.
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Affiliation(s)
- Yuying Ma
- State Key Laboratory of Crop Biology, Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Chukun Wang
- State Key Laboratory of Crop Biology, Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Zhen Gao
- State Key Laboratory of Crop Biology, Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Yuxin Yao
- State Key Laboratory of Crop Biology, Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Hui Kang
- State Key Laboratory of Crop Biology, Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Yuanpeng Du
- State Key Laboratory of Crop Biology, Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China
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48
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Li J, Dai X, Li Q, Jiang F, Xu X, Guo T, Zhang H. Low temperatures inhibit the pectin degradation of 'Docteur Jules Guyot' pear (Pyrus communis L.). Int J Biol Macromol 2023; 242:124719. [PMID: 37150373 DOI: 10.1016/j.ijbiomac.2023.124719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 04/12/2023] [Accepted: 04/30/2023] [Indexed: 05/09/2023]
Abstract
The most remarkable characteristic of European pears is extremely perishable and difficult to store after postharvest softening. Low-temperature storage is one of the most commonly used methods to prolong the shelf life of European pears. However, the regulatory mechanism of the low-temperature delay of the softening of European pears is still unclear. In this study, the fruit firmness, pectin polysaccharide content, pectin-degrading enzyme activity, and pectin degradation gene expression of 'Docteur Jules Guyot' pears under low temperature (LT) and room temperature (RT) were analyzed. It was found that water-soluble pectin (WSP) was significantly negatively correlated with fruit flesh firmness, and the activities of several pectin-degrading enzymes were inhibited under LT storage conditions. In addition, it was also found that the gene expression patterns of PcPME2, PcPME3, PcPG1, PcPG2, PcPL, PcGAL1, PcGAL2, PcGAL4, and PcARF1 were inhibited by LT. The C-repeat binding factors PcCBF1 and PcCBF2 were also inhibited by long-term LT storage. Correlation analysis showed that the expression of PcCBFs was positively correlated with pectin-degradation enzyme genes, and we found that the promoters of many pectin-degradation enzyme genes contain the CRT/DRE motif, which CBF can directly bind. Therefore, it is speculated that long-term low-temperature conditions inhibit pectin degradation through PcCBFs.
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Affiliation(s)
- Jianzhao Li
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province 264025, China; The Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in the Universities of Shandong, Ludong University, 186 Hongqizhong Road, Yantai 264025, China.
| | - Xiaonan Dai
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province 264025, China
| | - Qingyu Li
- Yantai Academy of Agricultural Sciences, Yantai, Shandong Province 265500, China
| | - Fudong Jiang
- Yantai Academy of Agricultural Sciences, Yantai, Shandong Province 265500, China
| | - Xiaofei Xu
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province 264025, China
| | - Tingting Guo
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province 264025, China
| | - Hongxia Zhang
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province 264025, China; The Key Laboratory of Molecular Module-Based Breeding of High Yield and Abiotic Resistant Plants in the Universities of Shandong, Ludong University, 186 Hongqizhong Road, Yantai 264025, China; Shandong Institute of Sericulture, Shandong Academy of Agricultural Sciences, 21 Zhichubei Road, Yantai, Shandong Province 264001, China.
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49
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Mohandas N, Edwards PJB, Kent LM, Jameson GB, Williams MAK. Biotinylation of reducing and non-reducing termini to create plug-and-play polysaccharides. Carbohydr Polym 2023; 305:120569. [PMID: 36737207 DOI: 10.1016/j.carbpol.2023.120569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/14/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023]
Abstract
Single-molecule studies continue to grow in popularity. In cases where biopolymer samples of interest exhibit variations in fine-structure between individual chains such single-molecule studies uniquely offer the promise of revealing deep structure-function relationships. Polysaccharides are typically studied in bulk and, as such, their study could greatly benefit from the application of single-molecule techniques. However, while for example single-molecule optical tweezers (OT) studies have become commonplace for DNA, studies of polysaccharides have lagged behind somewhat, complicated by the difficulty of studying molecules that amongst other things have more complex end-group chemistry. Recently, divalent streptavidin linkers have been shown to be capable of concatenating two pieces of biotin-terminated DNA to produce robust composite strings that run intact through conventional gels, and can be used in single-molecule OT experiments (Mohandas, Kent, Raudsepp, Jameson, & Williams, 2022). By using two such streptavidin linkers, biotin-terminated polymers could be inserted between two sections of DNA in order to facilitate single-molecule experiments on biopolymers that are currently difficult to address by other means. Here, we describe a generic approach for placing the required biotin moieties at both ends of polysaccharide chains, producing plug-and-play polysaccharide inserts that can be incorporated into composite polymer strings using streptavidin linking hubs.
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Affiliation(s)
- Nimisha Mohandas
- School of Natural Sciences, Massey University, Palmerston North, New Zealand; Riddet Institute, Massey University, Palmerston North, New Zealand
| | - Patrick J B Edwards
- School of Natural Sciences, Massey University, Palmerston North, New Zealand
| | - Lisa M Kent
- School of Natural Sciences, Massey University, Palmerston North, New Zealand
| | - Geoffrey B Jameson
- School of Natural Sciences, Massey University, Palmerston North, New Zealand; Riddet Institute, Massey University, Palmerston North, New Zealand; MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
| | - Martin A K Williams
- School of Natural Sciences, Massey University, Palmerston North, New Zealand; Riddet Institute, Massey University, Palmerston North, New Zealand; MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand.
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50
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Mi S, Li T, Shi Q, Zhu W, Wang X. Cold shock precooling improves the firmness of chili pepper during postharvest storage and the molecular mechanisms related to pectin. Food Chem 2023; 419:136052. [PMID: 37015167 DOI: 10.1016/j.foodchem.2023.136052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/23/2023] [Accepted: 03/25/2023] [Indexed: 04/06/2023]
Abstract
This research was conducted to explore the influence of cold shock on the firmness, a quality marker in chili pepper during 0-21 d storage and determine mechanism by cold shock impacted pectin. Chili peppers were exposed to cold shock precooling (0 ± 2 °C water/ice mixture) for 0-, 30-, 90- and 150-min, respectively. Results showed that cold shock alleviated loss of firmness throughout storage. Firmness was positively associated with sodium carbonate-soluble pectin content (r = 0.44), methylation degree of CDTA-soluble pectin (r = 0.82) and water-soluble pectin (WSP, r = 0.87), but negatively associated with WSP content (r = -0.76), and the activities of β-galactosidase (r = -0.72) and pectinlyase (r = -0.74). Cold shock for 90 min was determined to be optimal. This study confirms the applicability of cold shock precooling to maintain firmness and thereby to extend the shelf life of chili pepper.
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Affiliation(s)
- Si Mi
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Tong Li
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Quanying Shi
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Wenxuan Zhu
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Xianghong Wang
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China.
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