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Wang Z, Zhang Q, Bukvicki D, Xu Y, Peng Y, Li F, Zhang Q, Liu S, Yan J, Lin S, Qin W. Konjac glucomannan/microcapsule of thymol edible coating reduces okra pericarp browning by regulating antioxidant activity and ROS synthesis. Int J Biol Macromol 2024:133641. [PMID: 38969046 DOI: 10.1016/j.ijbiomac.2024.133641] [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: 04/01/2024] [Revised: 06/12/2024] [Accepted: 07/01/2024] [Indexed: 07/07/2024]
Abstract
Okra is susceptible to browning during storage. The effects of konjac glucomannan/microcapsule of thymol edible coating (TKL) on antioxidant activity and reactive oxygen (ROS) synthesis of okra during low-temperature storage were investigated. Thymol edible coating of thymol concentration 40 mg/mL (TKL40) had a regulatory effect on okra browning. After 14 days of storage, compared with the control group, the weight loss rate of TKL was reduced by 5.26 %, the hardness was increased by 24.14 %, and the L⁎ value was increased by 31 %. Moreover, TKL40 increased the scavenging capacity of okra for DPPH and ABTS free radicals, and activated catalase and superoxide dismutase activities by promoting the accumulation of total phenolics and flavonoids. TKL40 also reduced the cell membrane damage of okra during low-temperature storage by reducing the increase of malondialdehyde and H2O2 during okra storage. Meanwhile, it delayed the increase of relative conductivity and the production of O2.-, inhibited the activity of polyphenol oxidase in the late stage, so reduced the combination of polyphenol oxidase and phenolics to reduce the browning. Therefore, TKL40 reduces okra pericarp browning by regulating antioxidant activity and ROS synthesis.
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Affiliation(s)
- Zhuwei Wang
- Sichuan Key Laboratory of Fruit and Vegetable Postharvest Physiology, College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China
| | - Qinqiu Zhang
- Sichuan Key Laboratory of Fruit and Vegetable Postharvest Physiology, College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China
| | - Danka Bukvicki
- Institute of Botany and Botanical Garden 'Jevremovac', Faculty of Biology, Belgrade University, Takovska 43, 11000 Belgrade, Republic of Serbia
| | - Yi Xu
- Sichuan Key Laboratory of Fruit and Vegetable Postharvest Physiology, College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China
| | - Yue Peng
- Sichuan Key Laboratory of Fruit and Vegetable Postharvest Physiology, College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China
| | - Fan Li
- Sichuan Key Laboratory of Fruit and Vegetable Postharvest Physiology, College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China
| | - Qing Zhang
- Sichuan Key Laboratory of Fruit and Vegetable Postharvest Physiology, College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China
| | - Shuxiang Liu
- Sichuan Key Laboratory of Fruit and Vegetable Postharvest Physiology, College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China
| | - Jing Yan
- Sichuan Key Laboratory of Fruit and Vegetable Postharvest Physiology, College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China
| | - Shang Lin
- Sichuan Key Laboratory of Fruit and Vegetable Postharvest Physiology, College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China
| | - Wen Qin
- Sichuan Key Laboratory of Fruit and Vegetable Postharvest Physiology, College of Food Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.
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Zhang Y, Jia R, Hui T, Hu Y, Wang W, Wang Y, Wang Y, Zhu Y, Yang L, Xiang B. Transcriptomic and physiological analysis of the response of Spirodela polyrrhiza to sodium nitroprusside. BMC PLANT BIOLOGY 2024; 24:95. [PMID: 38331719 PMCID: PMC10851477 DOI: 10.1186/s12870-024-04766-6] [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: 12/12/2022] [Accepted: 01/24/2024] [Indexed: 02/10/2024]
Abstract
BACKGROUND Spirodela polyrrhiza is a simple floating aquatic plant with great potential in synthetic biology. Sodium nitroprusside (SNP) stimulates plant development and increases the biomass and flavonoid content in some plants. However, the molecular mechanism of SNP action is still unclear. RESULTS To determine the effect of SNP on growth and metabolic flux in S. polyrrhiza, the plants were treated with different concentrations of SNP. Our results showed an inhibition of growth, an increase in starch, soluble protein, and flavonoid contents, and enhanced antioxidant enzyme activity in plants after 0.025 mM SNP treatment. Differentially expressed transcripts were analysed in S. polyrrhiza after 0.025 mM SNP treatment. A total of 2776 differentially expressed genes (1425 upregulated and 1351 downregulated) were identified. The expression of some genes related to flavonoid biosynthesis and NO biosynthesis was upregulated, while the expression of some photosynthesis-related genes was downregulated. Moreover, SNP stress also significantly influenced the expression of transcription factors (TFs), such as ERF, BHLH, NAC, and WRKY TFs. CONCLUSIONS Taken together, these findings provide novel insights into the mechanisms of underlying the SNP stress response in S. polyrrhiza and show that the metabolic flux of fixed CO2 is redirected into the starch synthesis and flavonoid biosynthesis pathways after SNP treatment.
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Affiliation(s)
- Yamei Zhang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Rong Jia
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Tanyue Hui
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Yue Hu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Wenjing Wang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Yi Wang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Yong Wang
- College of Life Science, Nankai University, Tianjin, 300071, China
| | - Yerong Zhu
- College of Life Science, Nankai University, Tianjin, 300071, China
| | - Lin Yang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
| | - Beibei Xiang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China.
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Zhu ZP, Yu JX, Liu FF, Zhu DW, Xiong AS, Sun M. AeWRKY32 from okra regulates anthocyanin accumulation and cold tolerance in Arabidopsis. JOURNAL OF PLANT PHYSIOLOGY 2023; 287:154062. [PMID: 37540924 DOI: 10.1016/j.jplph.2023.154062] [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: 05/11/2023] [Revised: 07/20/2023] [Accepted: 07/31/2023] [Indexed: 08/06/2023]
Abstract
Okra (Abelmoschus esculentus L.) is a tropical crop species, and its growth and development are severely affected by cold stress. Recent studies have identified a potential association between WRKY transcription factors and the cold response mechanism of crops. In this study, the AeWRKY32 transcription factor that encodes 482 amino acids was amplified from A. esculentus, and its expression level was found to be the highest in the okra flower. AeWRKY32 localized to the nucleus and displayed transcriptional activation capability. Under normal conditions, overexpression of AeWRKY32 induced anthocyanin accumulation, with higher expression levels of AtCHS1, AtCHI4, AtF3H1, and AtDFR2 in transgenic Arabidopsis. Under cold stress, anthocyanin levels were further elevated in transgenic Arabidopsis plants. At the same time, AeWRKY32 overexpression promoted ABA biosynthesis, inhibited H2O2 and O2- generation, induced stomatal closure, reduced electrolyte leakage, and thus improved the cold resistance of transgenic Arabidopsis. Furthermore, under cold stress, the expression profiles of AtCOR413, AtCOR15B, AtCBF1, and AtCBF2 were upregulated in transgenic Arabidopsis. Overall, our study provides evidence that AeWRKY32 serves as a crucial regulator in both anthocyanin accumulation and cold tolerance of transgenic Arabidopsis. Our findings could provide insights into the molecular mechanism linking AeWRKYs to plant cold tolerance.
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Affiliation(s)
- Zhi-Peng Zhu
- College of Marine and Biological Engineering, Yancheng Teachers University, Yancheng, Jiangsu, 224002, China
| | - Jian-Xiang Yu
- College of Marine and Biological Engineering, Yancheng Teachers University, Yancheng, Jiangsu, 224002, China
| | - Fang-Fang Liu
- College of Marine and Biological Engineering, Yancheng Teachers University, Yancheng, Jiangsu, 224002, China
| | - De-Wei Zhu
- College of Marine and Biological Engineering, Yancheng Teachers University, Yancheng, Jiangsu, 224002, China
| | - Ai-Sheng Xiong
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.
| | - Miao Sun
- College of Marine and Biological Engineering, Yancheng Teachers University, Yancheng, Jiangsu, 224002, China; State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.
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Zhang H, Pu J, Liu H, Wang M, Du Y, Tang X, Luo X, Wang Y, Deng Q. Effects of L-Cysteine and γ-Aminobutyric Acid Treatment on Postharvest Quality and Antioxidant Activity of Loquat Fruit during Storage. Int J Mol Sci 2023; 24:10541. [PMID: 37445735 DOI: 10.3390/ijms241310541] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/07/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Sichuan is the China's leading producer of loquat, with the largest cultivation area and yield ranked first in China. Loquat is a seasonal fruit highly appreciated by consumers; however, the fruit is prone to browning and lignification after harvest, affecting its storage quality. The effects of L-Cysteine (L-Cys, 0.01, 0.05, 0.1, 0.2%) and γ-aminobutyric acid (GABA, 0.025, 0.05, 0.075, 0.1%) on the sensory quality and antioxidant activity of loquat fruit during cold storage at 4 °C for 35 days and simulated shelf life for 5 days were investigated. The results showed that after 40 days of storage, compared with the control, 0.05% L-Cys and 0.05% GABA treatment of 'Zaozhong No. 6' loquat fruit effectively reduced the weight loss rate, browning index, decay index, respiratory rate, firmness, and lignin content and slowed the decreases in total soluble solids, soluble sugar, titratable acidityand vitamin C contents. The application of 0.05% L-Cys and 0.05% GABA significantly increased the contents of total phenols, total flavonoids, flavanols, and carotenoids; delayed the increase of relative electric conductivity, MDA, POD, and PPO activities; and significantly enhanced the activities of SOD and CAT, DPPH free radical scavenging ability, and FRAP, thereby improving antioxidant capacity. In summary, 0.05% L-Cys and 0.05% GABA treatment promotes the quality of loquat fruit after 40 days of storage, and significantly enhances antioxidant capacity, thus delaying senescence after harvest.
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Affiliation(s)
- Huifen Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Jing Pu
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Han Liu
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Miao Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Ying Du
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaofu Tang
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Xian Luo
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Yongqing Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Qunxian Deng
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
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Karmanov A, Shaposhnikova L, Kocheva L, Rachkova N, Belyy V, Lutoev V. Structural features of stress lignin of aspen (Populus tremula L.) growing under increased background radiation. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2023. [DOI: 10.1016/j.bcab.2023.102677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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6
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Li F, Ma Y, Yi Y, Ren M, Li L, Chen Y, Li A, Han S, Tang H, Jia H, Wang X, Li J. Nitric oxide induces S-nitrosylation of CESA1 and CESA9 and increases cellulose content in Arabidopsis hypocotyls. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 196:1-9. [PMID: 36680948 DOI: 10.1016/j.plaphy.2023.01.032] [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: 10/19/2022] [Revised: 12/05/2022] [Accepted: 01/16/2023] [Indexed: 06/17/2023]
Abstract
Nitric oxide (NO), a small signaling gas molecule, participates in several growth and developmental processes in plants. However, how NO regulates cell wall biosynthesis remains unclear. Here, we demonstrate a positive effect of NO on cellulose content that may be related to S-nitrosylation of cellulose synthase 1 (CESA1) and CESA9. Two S-nitrosylated cysteine (Cys) residues, Cys562 and Cys641, which are exposed on the surface of CESA1 and CESA9 and located in the cellulose synthase catalytic domain, were identified to be S-nitrosylated. Meanwhile, Cys641 was located on the binding surface of CESA1 and CESA9, and Cys562 was very close to the binding surface. Cellulose synthase complexes (CSCs) dynamics are closely associated with cellulose content. S-nitrosylation of CESA1 and CESA9 improved particles mobility and thus increased the accumulation of cellulose in Arabidopsis hypocotyl cells. An increase in hemicellulose content as well as an alteration in pectin content facilitated cell wall extension and contributed to cell growth, finally promoting elongation of Arabidopsis hypocotyls. Overall, our work provides a path to investigate the way NO affects the cellulose content of plants.
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Affiliation(s)
- Fali Li
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Ying Ma
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yuying Yi
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Meijuan Ren
- Life Science Research Core Services, Division of Laboratory Safety and Services, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Luqi Li
- Life Science Research Core Services, Division of Laboratory Safety and Services, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Ying Chen
- WuXi AppTec, Shanghai, 200131, China
| | - Ao Li
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Sirui Han
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | | | - Honglei Jia
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China.
| | | | - Jisheng Li
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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Guo X, Huang D, Jing G, Feng J, Zhu S. Nitric oxide-mediated DNA methylation enhances cold resistance in postharvest peach fruit. Food Chem 2023; 404:134660. [DOI: 10.1016/j.foodchem.2022.134660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/17/2022] [Accepted: 10/15/2022] [Indexed: 11/22/2022]
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8
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Qian C, Ji Z, Sun Y, Zhang M, Kan J, Xiao L, Liu J, Jin C, Yang W, Qi X. Lignin Biosynthesis in Postharvest Water Bamboo ( Zizania latifolia) Shoots during Cold Storage Is Regulated by RBOH-Mediated Reactive Oxygen Species Signaling. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3201-3209. [PMID: 36762739 DOI: 10.1021/acs.jafc.2c08073] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Lignification is a major cause of senescence in fresh shoots of water bamboo (Zizania latifolia), which is a popular vegetable in southeast Asia; however, its physiological and molecular mechanisms is less understood. In the present study, lignin content and transcriptome change in postharvested water bamboo shoots under cold storage were investigated. We found that lignin significantly accumulated in the epidermis of the shoots with the increase of firmness. In the cold storage shoots, the major up-regulated genes were involved in phenylpropanoid biosynthesis, plant-pathogen interactions, and starch and sucrose metabolism. The lignin biosynthesis genes PAL, 4CL, C4H, CCoAOMT, CCR, F5H, CAD, and POD family were up-regulated during cold storage, while HCT and C3H were down-regulated. The MAPK signaling pathway was also up-regulated and respiratory burst oxidase homologue (RBOH) genes were strongly up-regulated. Therefore, we investigated the RBOH gene family and their expression profile in water bamboo shoots. The results indicated that 10 ZlRBOHs were up-regulated in cold storage shoots. Diphenyleneiodonium chloride (DPI), an inhibitor of RBOH oxidase, significantly inhibited the expression of genes involved in lignin deposition and biosynthesis, while H2O2 enhanced these processes. These results suggest that lignification of water bamboo shoots is regulated by RBOH-mediated ROS signaling.
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Affiliation(s)
- Chunlu Qian
- Department of Food Science and Engineering, School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Zhengjie Ji
- Department of Food Science and Engineering, School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Yan Sun
- Department of Food Science and Engineering, School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Man Zhang
- Department of Food Science and Engineering, School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Juan Kan
- Department of Food Science and Engineering, School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Lixia Xiao
- Department of Food Science and Engineering, School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Jun Liu
- Department of Food Science and Engineering, School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Changhai Jin
- Department of Food Science and Engineering, School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Wenfei Yang
- Huaiyin Institute of Agricultural Sciences in Xuhuai Area of Jiangsu, Huaian 223001, China
| | - Xiaohua Qi
- Department of Horticulture, School of Horticulture and Landscape, Yangzhou University, Yangzhou 225001, China
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9
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Liu Y, Liu Y, Chen Q, Yin F, Song M, Cai W, Shuai L. Methyl jasmonate treatment alleviates chilling injury and improves antioxidant system of okra pod during cold storage. Food Sci Nutr 2023; 11:2049-2060. [PMID: 37051347 PMCID: PMC10084972 DOI: 10.1002/fsn3.3241] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 12/20/2022] [Accepted: 01/12/2023] [Indexed: 02/04/2023] Open
Abstract
Okra pod is sensitive to low temperature, which results in chilling injury under improper low-temperature storage. This study aimed to evaluate the effect of different concentrations of methyl jasmonate (MeJA) treatment on okra pod stored at 4 ± 1°C for 12 days and illuminate the mechanism of MeJA alleviating chilling injury. Compared to the control, MeJA treatments maintained lower relative electric conductivity (REC), chilling injury (CI) degree, and lignin content, as well as higher total soluble solids, total soluble sugar, pectin content, and chlorophyll content. The factor analysis was applied to comprehensively evaluate the effects of MeJA so that 1 μmol/L MeJA was screened as the optimum concentration to maintain the okra quality throughout the storage time. In contrast with control, MeJA not only accelerated the generation of antioxidant substances (phenolics and flavonoids) but also increased the superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and peroxidase (POD) activity, inhibited malondialdehyde (MDA), hydrogen peroxide (H2O2) content accumulation, and the polyphenol oxidase (PPO) activity. This work confirmed that MeJA could effectively alleviate chilling injury and maintain the quality during cold-stored by regulating reactive oxygen species (ROS) metabolism. These results provide theoretical guidance for the application of MeJA in okra storage and preservation.
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Affiliation(s)
- Yunfen Liu
- College of Food and Biological Engineering Hezhou University Hezhou Guangxi China
- Guangxi Key Laboratory of Health Care Food Science and Technology Hezhou University Hezhou Guangxi China
| | - Yu Liu
- College of Food and Biological Engineering Hezhou University Hezhou Guangxi China
| | - Qiumei Chen
- College of Food and Biological Engineering Hezhou University Hezhou Guangxi China
| | - Feilong Yin
- College of Food and Biological Engineering Hezhou University Hezhou Guangxi China
| | - Mubo Song
- College of Food and Biological Engineering Hezhou University Hezhou Guangxi China
- Guangxi Key Laboratory of Health Care Food Science and Technology Hezhou University Hezhou Guangxi China
| | - Wen Cai
- College of Food and Biological Engineering Hezhou University Hezhou Guangxi China
| | - Liang Shuai
- College of Food and Biological Engineering Hezhou University Hezhou Guangxi China
- Guangxi Key Laboratory of Health Care Food Science and Technology Hezhou University Hezhou Guangxi China
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Yu W, Li S, Zheng B, Wang Y, Yu Y, Wang Y, Zheng X, Liu J, Zhang Z, Xue Z. Transcriptome analysis reveals the potential mechanism of polyethylene packing delaying lignification of Pleurotus eryngii. FOOD CHEMISTRY: MOLECULAR SCIENCES 2022; 5:100117. [PMID: 35845151 PMCID: PMC9278076 DOI: 10.1016/j.fochms.2022.100117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/02/2022] [Accepted: 07/03/2022] [Indexed: 11/30/2022]
Abstract
Transcriptomics analysis of polyethylene (PE) on lignification of P. eryngii. Differentially expressed genes are enriched in process of lignin decomposition. PE delayed lignification by regulation of gene related to lignin metabolism. Visualization of lignin changes in P. eryngii by confocal Raman microspectroscopy.
Transcriptome analysis is important for the quality improvement of edible fungi, however, the effect of polyethylene (PE) packaging on the preservation of Pleurotus eryngii at the transcriptome level still needs to be further investigated. In order to elucidate the effect of PE on delaying lignification of P. eryngii, this study focused on exploring effects of PE on enzymes and genes involved in lignification. The results showed that PE packaging delayed the deterioration of phenotype, color difference and weight loss rate of P. eryngii, inhibited lignin and H2O2 content and maintained firmness and cellulose content. The activities of PAL, POD, 4-CL were inhibited, and more laccase expression was activated. Fifty-five differentially expressed genes associated with laccase, multifunctional peroxidase (VP), POD and 4-CL were screened from 10 d, 20 d and 30 d transcriptome data. These results show that PE could inhibit lignification of P. eryngii by up-regulating laccase and VP related genes involved in lignin decomposition and down-regulating the expression of genes involved in lignin synthesis. Meanwhile, we employed Confocal Raman microspectroscopy (CRM) to realize lignin cell level visualization and PE could reduce lignin deposition and weaken the lignin signal bands formed. Therefore, PE can alleviate the lignification of P. eryngii during storage by regulating the expression of specific genes, advancing the understanding of lignification in postharvest P. eryngii at the molecular level, and CRM has the potential to detect the changes of P. eryngii cell wall.
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Affiliation(s)
- Wancong Yu
- Biotechnology Research Institute, Tianjin Academy of Agricultural Sciences, 300384 Tianjin, China
| | - Shihao Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Bowen Zheng
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Yuqi Wang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China
| | - Yue Yu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Yumeng Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Xu Zheng
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Jiping Liu
- Robert Holley Center, US Department of Agriculture, Agricultural Research Service, Cornell University, Ithaca, NY 14853, USA
| | - Zhijun Zhang
- National Engineering Technology Research Center for Preservation of Agricultural Products, Tianjin Key Laboratory of Postharvest Physiology and Storage of Agricultural Products, 300384 Tianjin, China
- Corresponding authors.
| | - Zhaohui Xue
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Corresponding authors.
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