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Zhang C, Guo M, Kong Y, Zhang J, Wang J, Sun S, Li X, Zeng X, Gong H, Fan X. Antifungal mechanism of phenyllactic acid against Mucor investigated through proteomic analysis. Food Chem 2024; 452:139525. [PMID: 38718453 DOI: 10.1016/j.foodchem.2024.139525] [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: 01/07/2024] [Revised: 04/24/2024] [Accepted: 04/28/2024] [Indexed: 06/01/2024]
Abstract
The primary inhibitory targets of phenyllactic acid (PLA, including D-PLA and L-PLA) on Mucor were investigated using Mucor racemosus LD3.0026 isolated from naturally spoiled cherry, as an indicator fungi. The results demonstrated that the minimum inhibitory concentration (MIC) of PLA against Mucor was 12.5 mmol·L-1. Results showed that the growing cells at the tip of the Mucor were not visibly deformed, and there was no damage to the cell wall following PLA treatment; however, PLA damaged the cell membrane and internal structure. The results of isobaric tags for relative and absolute quantification (iTRAQ) indicated that the Mucor mitochondrial respiratory chain may be the target of PLA, potentially inhibiting the energy supply of Mucor. These results indicate that the antifungal mechanism of PLA against mold is independent of its molecular configuration. The growth of Mucor is suppressed by PLA, which destroys the organelle structure in the mycelium and inhibits energy metabolism.
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Affiliation(s)
- Chaoqi Zhang
- College of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Food Green Processing and Quality Control, Ludong University, Yantai, Shandong 264025, PR China
| | - Mingmei Guo
- Mudan District Mudan Street Sub-district Office, Heze, Shandong 274000, PR China
| | - Yanhui Kong
- Yantai Landscape Construction and Maintenance Center, Yantai, Shandong 264000, PR China
| | - Juanyue Zhang
- College of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Food Green Processing and Quality Control, Ludong University, Yantai, Shandong 264025, PR China
| | - Jingyue Wang
- College of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Food Green Processing and Quality Control, Ludong University, Yantai, Shandong 264025, PR China
| | - Shuyang Sun
- College of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Food Green Processing and Quality Control, Ludong University, Yantai, Shandong 264025, PR China
| | - Xiulian Li
- College of Pharmacy, Binzhou Medical University, Yantai, Shandong 264003, PR China
| | - Xiangquan Zeng
- Department of Food Science, College of Agriculture, Purdue University, West Lafayette 47906, IN, USA
| | - Hansheng Gong
- College of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Food Green Processing and Quality Control, Ludong University, Yantai, Shandong 264025, PR China.
| | - Xinguang Fan
- College of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Food Green Processing and Quality Control, Ludong University, Yantai, Shandong 264025, PR China.
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2
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Gu H, Qin J, Wen J, Lin Y, Jia X, Wang W, Yin H. Unveiling the structural properties and induced resistance activity in rice of Chitin/Chitosan-Glucan Complex of Rhizoctonia solani AG1 IA inner cell wall. Carbohydr Polym 2024; 337:122149. [PMID: 38710571 DOI: 10.1016/j.carbpol.2024.122149] [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: 02/23/2024] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 05/08/2024]
Abstract
Phytopathogen cell wall polysaccharides have important physiological functions. In this study, we isolated and characterized the alkali-insoluble residue on the inner layers of the Rhizoctonia solani AG1 IA cell wall (RsCW-AIR). Through chemical composition and structural analysis, RsCW-AIR was mainly identified as a complex of chitin/chitosan and glucan (ChCsGC), with glucose and glucosamine were present in a molar ratio of 2.7:1.0. The predominant glycosidic bond linkage of glucan in ChCsGC was β-1,3-linked Glcp, both the α and β-polymorphic forms of chitin were presented in it by IR, XRD, and solid-state NMR, and the ChCsGC exhibited a degree of deacetylation measuring 67.08 %. RsCW-AIR pretreatment effectively reduced the incidence of rice sheath blight, and its induced resistance activity in rice was evaluated, such as inducing a reactive oxygen species (ROS) burst, leading to the accumulation of salicylic acid (SA) and the up-regulation of SA-related gene expression. The recognition of RsCW-AIR in rice is partially dependent on CERK1.
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Affiliation(s)
- Hui Gu
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Dalian Technology Innovation Center for Green Agriculture, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Qin
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Dalian Technology Innovation Center for Green Agriculture, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinxuan Wen
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Dalian Technology Innovation Center for Green Agriculture, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yudie Lin
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Dalian Technology Innovation Center for Green Agriculture, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; College of Food Science and Engineering, Dalian Ocean University, Dalian 116023, China
| | - Xiaochen Jia
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Dalian Technology Innovation Center for Green Agriculture, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Wenxia Wang
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Dalian Technology Innovation Center for Green Agriculture, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Heng Yin
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Dalian Technology Innovation Center for Green Agriculture, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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3
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Liang S, Wang X, Sun S, Xie L, Dang X. Extraction of chitin from flammulina velutipes waste: A low-concentration acid pretreatment and aspergillus Niger fermentation approach. Int J Biol Macromol 2024; 273:133224. [PMID: 38897518 DOI: 10.1016/j.ijbiomac.2024.133224] [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: 12/16/2023] [Revised: 06/03/2024] [Accepted: 06/15/2024] [Indexed: 06/21/2024]
Abstract
In recent years, with the booming of the edible mushroom industry, chitin production has become increasingly dependent on fungi and other non-traditional sources. Fungal chitin has advantages including superior performance, simpler separation processes, abundant raw materials, and the absence of shellfish allergens. As a kind of edible mushroom, flammulina velutipes (F. velutipes) also has the advantages of wide source and large annual yield. This provided the possibility for the extraction of chitin. Here, a procedure to extract chitin from F. velutipes waste be presented. This method comprises low-concentration acid pretreatment coupled with consolidated bioprocessing with Aspergillus niger. Characterization by SEM, FTIR, XRD, NMR, and TGA confirmed that the extracted chitin was β-chitin. To achieve optimal fermentation of F. velutipes waste (80 g/L), ammonium sulfate and glucose were selected as nitrogen and carbon sources (5 g/L), with a fermentation time of 5 days. The extracted chitin could be further deacetylated and purified to obtain high-purity chitosan (99.2 % ± 1.07 %). This chitosan exhibited a wide degree of deacetylation (50.0 % ± 1.33 % - 92.1 % ± 0.97 %) and a molecular weight distribution of 92-192 kDa. Notably, the yield of chitosan extracted in this study was increased by 56.3 % ± 0.47 % compared to the traditional chemical extraction method.
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Affiliation(s)
- Shuang Liang
- Institute of Biomass and Function Materials & National Demonstration Centre for Experimental Light Chemistry Engineering Education, College of Bioresources Chemistry and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Xuechuan Wang
- Institute of Biomass and Function Materials & National Demonstration Centre for Experimental Light Chemistry Engineering Education, College of Bioresources Chemistry and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China.
| | - Siwei Sun
- Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, Shaanxi 710021, PR China
| | - Long Xie
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Xugang Dang
- Institute of Biomass and Function Materials & National Demonstration Centre for Experimental Light Chemistry Engineering Education, College of Bioresources Chemistry and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China; Hubei Provincial Engineering Laboratory for Clean Production and High-Value Utilization of Bio-Based Textile Materials, Wuhan Textile University, Wuhan 430200, PR China.
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4
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Saberi Riseh R, Gholizadeh Vazvani M, Vatankhah M, Kennedy JF. Chitin-induced disease resistance in plants: A review. Int J Biol Macromol 2024; 266:131105. [PMID: 38531527 DOI: 10.1016/j.ijbiomac.2024.131105] [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: 12/08/2023] [Revised: 03/15/2024] [Accepted: 03/21/2024] [Indexed: 03/28/2024]
Abstract
Chitin is composed of N-acetylglucosamine units. Chitin a polysaccharide found in the cell walls of fungi and exoskeletons of insects and crustaceans, can elicit a potent defense response in plants. Through the activation of defense genes, stimulation of defensive compound production, and reinforcement of physical barriers, chitin enhances the plant's ability to defend against pathogens. Chitin-based treatments have shown efficacy against various plant diseases caused by fungal, bacterial, viral, and nematode pathogens, and have been integrated into sustainable agricultural practices. Furthermore, chitin treatments have demonstrated additional benefits, such as promoting plant growth and improving tolerance to abiotic stresses. Further research is necessary to optimize treatment parameters, explore chitin derivatives, and conduct long-term field studies. Continued efforts in these areas will contribute to the development of innovative and sustainable strategies for disease management in agriculture, ultimately leading to improved crop productivity and reduced reliance on chemical pesticides.
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Affiliation(s)
- Roohallah Saberi Riseh
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, 7718897111 Rafsanjan, Iran.
| | - Mozhgan Gholizadeh Vazvani
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, 7718897111 Rafsanjan, Iran
| | - Masoumeh Vatankhah
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, 7718897111 Rafsanjan, Iran
| | - John F Kennedy
- Chembiotech Laboratories Ltd, WR15 8FF Tenbury Wells, United Kingdom.
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5
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Vadivel D, Cartabia M, Scalet G, Buratti S, Di Landro L, Benedetti A, Auricchio F, Babbini S, Savino E, Dondi D. Innovative chitin-glucan based material obtained from mycelium of wood decay fungal strains. Heliyon 2024; 10:e28709. [PMID: 38590850 PMCID: PMC11000025 DOI: 10.1016/j.heliyon.2024.e28709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/21/2024] [Accepted: 03/22/2024] [Indexed: 04/10/2024] Open
Abstract
Fungi are an alternative source to animal-based chitin. In fungi, chitin fibrils are strongly interconnected and bound with glucans that justify the unique matrix. The present study aimed to extract chitin and glucans from the mycelium of several wood decay fungal strains in order to obtain flexible materials and to check correlations between chitin content and the mechanical properties of these materials. Five strains were chosen in consideration of their different cell wall chemical composition (high content of α-glucans, β-glucans or chitin) to evaluate how these differences could influence the mechanical and chemical characteristics of the material. The fungal strains were cultivated in liquid-submerged dynamic fermentation (both flasks and bioreactor). Chitin and glucans were crosslinked with acetic acid and plasticized with glycerol to obtain flexible sheets. Abortiporus biennis, Fomitopsis iberica and Stereum hirsutum strains were found to adapt to produce material with adequate flexibility. The obtained materials were characterized by Thermogravimetric analysis (TGA) for the understanding of the material composition. The material obtained from each species was mechanically tested in terms of tear strength, elongation at break, and Young's modulus.
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Affiliation(s)
- Dhanalakshmi Vadivel
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Marco Cartabia
- Department of Earth and Environmental Sciences (DSTA), University of Pavia, Via S. Epifanio 14, 27100, Pavia, Italy
- MOGU S.r.l., Via S. Francesco d’Assisi 62, 21020, Inarzo, VA, Italy
| | - Giulia Scalet
- Dep. of Civil Engineering and Architecture (DICAr), University of Pavia, Via Ferrata 3, 27100, Pavia, Italy
| | - Simone Buratti
- Department of Earth and Environmental Sciences (DSTA), University of Pavia, Via S. Epifanio 14, 27100, Pavia, Italy
| | - Luca Di Landro
- Department of Aerospace Science and Technology (DAER), Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Alessandra Benedetti
- Department of Aerospace Science and Technology (DAER), Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Ferdinando Auricchio
- Dep. of Civil Engineering and Architecture (DICAr), University of Pavia, Via Ferrata 3, 27100, Pavia, Italy
| | - Stefano Babbini
- MOGU S.r.l., Via S. Francesco d’Assisi 62, 21020, Inarzo, VA, Italy
| | - Elena Savino
- Department of Earth and Environmental Sciences (DSTA), University of Pavia, Via S. Epifanio 14, 27100, Pavia, Italy
| | - Daniele Dondi
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
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6
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Utama GL, Oktaviani L, Balia RL, Rialita T. Potential Application of Yeast Cell Wall Biopolymers as Probiotic Encapsulants. Polymers (Basel) 2023; 15:3481. [PMID: 37631538 PMCID: PMC10459707 DOI: 10.3390/polym15163481] [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: 07/09/2023] [Revised: 08/01/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Biopolymers of yeast cell walls, such as β-glucan, mannoprotein, and chitin, may serve as viable encapsulants for probiotics. Due to its thermal stability, β-glucan is a suitable cryoprotectant for probiotic microorganisms during freeze-drying. Mannoprotein has been shown to increase the adhesion of probiotic microorganisms to intestinal epithelial cells. Typically, chitin is utilized in the form of its derivatives, particularly chitosan, which is derived via deacetylation. Brewery waste has shown potential as a source of β-glucan that can be optimally extracted through thermolysis and sonication to yield up to 14% β-glucan, which can then be processed with protease and spray drying to achieve utmost purity. While laminarinase and sodium deodecyle sulfate were used to isolate and extract mannoproteins and glucanase was used to purify them, hexadecyltrimethylammonium bromide precipitation was used to improve the amount of purified mannoproteins to 7.25 percent. The maximum chitin yield of 2.4% was attained by continuing the acid-alkali reaction procedure, which was then followed by dialysis and lyophilization. Separation and purification of yeast cell wall biopolymers via diethylaminoethyl (DEAE) anion exchange chromatography can be used to increase the purity of β-glucan, whose purity in turn can also be increased using concanavalin-A chromatography based on the glucan/mannan ratio. In the meantime, mannoproteins can be purified via affinity chromatography that can be combined with zymolase treatment. Then, dialysis can be continued to obtain chitin with high purity. β-glucans, mannoproteins, and chitosan-derived yeast cell walls have been shown to promote the survival of probiotic microorganisms in the digestive tract. In addition, the prebiotic activity of β-glucans and mannoproteins can combine with microorganisms to form synbiotics.
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Affiliation(s)
- Gemilang Lara Utama
- Faculty of Agro-Industrial Technology, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang Km. 21, Jatinangor, Sumedang 45363, Indonesia; (L.O.); (T.R.)
- Center for Environment and Sustainability Science, Universitas Padjadjaran, Jalan Sekeloa Selatan 1 No 1, Bandung 40134, Indonesia
| | - Lidya Oktaviani
- Faculty of Agro-Industrial Technology, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang Km. 21, Jatinangor, Sumedang 45363, Indonesia; (L.O.); (T.R.)
| | - Roostita Lobo Balia
- Veterinary Study Program, Faculty of Medicine, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang Km. 21, Jatinangor, Sumedang 45363, Indonesia;
| | - Tita Rialita
- Faculty of Agro-Industrial Technology, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang Km. 21, Jatinangor, Sumedang 45363, Indonesia; (L.O.); (T.R.)
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7
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Liao J, Wang Y, Hou B, Zhang J, Huang H. Nano-chitin reinforced agarose hydrogels: Effects of nano-chitin addition and acidic gas-phase coagulation. Carbohydr Polym 2023; 313:120902. [PMID: 37182930 DOI: 10.1016/j.carbpol.2023.120902] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/28/2023] [Accepted: 04/08/2023] [Indexed: 05/16/2023]
Abstract
Hydrogels based on natural polymers such as agarose usually show low applicability due to their weak mechanical properties. In this work, we developed a dual cross-linked agarose hydrogel by adding different amounts of TEMPO-oxidized nano-chitin (0-0.2 %) to agarose hydrogel matrices and then physically cross-linked under acidic gas-phase coagulation. The prepared hydrogels were characterized by FTIR, XRD, TGA, and SEM. The effects of nano-chitin addition and acidic gas-phase coagulation on the properties of agarose hydrogels, such as gel strength, swelling degree, rheological properties, and methylene blue (MB) adsorption capacity, were also studied. Structural characterizations confirmed that nano-chitin was successfully introduced into agarose hydrogels. The gel strength, storage modulus, and MB adsorption capacity of agarose hydrogels gradually increased with the increasing nano-chitin addition, whereas the swelling degree decreased. After acidic gas-phase coagulation, agarose/nano-chitin nanocomposite hydrogels exhibited improved gel strength and storage modulus, while the swelling degree and MB adsorption capacity were slightly reduced. The combination of oxidized nano-chitin and acidic gas-phase coagulation is expected to be an effective way to improve the properties of natural polymer hydrogels.
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Affiliation(s)
- Jing Liao
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; Meat Processing Key Laboratory of Sichuan Province, Chengdu University, Chengdu 610106, China; Cuisine Science Key Laboratory of Sichuan Province, Sichuan Tourism University, Chengdu 610100, China.
| | - Yijin Wang
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Bo Hou
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Jiamin Zhang
- Meat Processing Key Laboratory of Sichuan Province, Chengdu University, Chengdu 610106, China
| | - Huihua Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China.
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Zheng X, Zhang X, Zhao J, Oyom W, Long H, Yang R, Pu L, Bi Y, Prusky D. Meyerozyma guilliermondii promoted the deposition of GSH type lignin by activating the biosynthesis and polymerization of monolignols at the wounds of potato tubers. Food Chem 2023; 416:135688. [PMID: 36905709 DOI: 10.1016/j.foodchem.2023.135688] [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: 05/27/2022] [Revised: 01/08/2023] [Accepted: 02/10/2023] [Indexed: 02/19/2023]
Abstract
Lignin is a crucial component in the wound tissue of tubers. The biocontrol yeast Meyerozyma guilliermondii increased the activities of phenylalanine ammonia lyase, cinnamate-4-hydroxylase, 4-coenzyme coenzyme A ligase, and cinnamyl alcohol dehydrogenase, and elevated the levels of coniferyl, sinapyl, and p-coumaryl alcohol. The yeast also enhanced the activities of peroxidase and laccase, as well as the content of hydrogen peroxide. The lignin promoted by the yeast was identified as guaiacyl-syringyl-p-hydroxyphenyl type using Fourier transform infrared spectroscopy and two-dimensional heteronuclear single quantum coherence nuclear magnetic resonance. Furthermore, a larger signal area for G2, G5, G'6, S2, 6, and S'2, 6 units was observed in the treated tubers, and the G'2 and G6 units were only detected in the treated tuber. Taken together, M. guilliermondii could promote deposition of guaiacyl-syringyl-p-hydroxyphenyl type lignin by activating the biosynthesis and polymerization of monolignols at the wounds of potato tubers.
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Affiliation(s)
- Xiaoyuan Zheng
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Xuejiao Zhang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Jinmei Zhao
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - William Oyom
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Haitao Long
- College of Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Ruirui Yang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Lumei Pu
- College of Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Yang Bi
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China.
| | - Dov Prusky
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Rishon LeZion 7505101, Israel
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9
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Suwanchaikasem P, Nie S, Idnurm A, Selby‐Pham J, Walker R, Boughton BA. Effects of chitin and chitosan on root growth, biochemical defense response and exudate proteome of Cannabis sativa. PLANT-ENVIRONMENT INTERACTIONS (HOBOKEN, N.J.) 2023; 4:115-133. [PMID: 37362423 PMCID: PMC10290428 DOI: 10.1002/pei3.10106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 03/09/2023] [Accepted: 03/19/2023] [Indexed: 06/28/2023]
Abstract
Fungal pathogens pose a major threat to Cannabis sativa production, requiring safe and effective management procedures to control disease. Chitin and chitosan are natural molecules that elicit plant defense responses. Investigation of their effects on C. sativa will advance understanding of plant responses towards elicitors and provide a potential pathway to enhance plant resistance against diseases. Plants were grown in the in vitro Root-TRAPR system and treated with colloidal chitin and chitosan. Plant morphology was monitored, then plant tissues and exudates were collected for enzymatic activity assays, phytohormone quantification, qPCR analysis and proteomics profiling. Chitosan treatments showed increased total chitinase activity and expression of pathogenesis-related (PR) genes by 3-5 times in the root tissues. In the exudates, total peroxidase and chitinase activities and levels of defense proteins such as PR protein 1 and endochitinase 2 were increased. Shoot development was unaffected, but root development was inhibited after chitosan exposure. In contrast, chitin treatments had no significant impact on any defense parameters, including enzymatic activities, hormone quantities, gene expression levels and root secreted proteins. These results indicate that colloidal chitosan, significantly enhancing defense responses in C. sativa root system, could be used as a potential elicitor, particularly in hydroponic scenarios to manage crop diseases.
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Affiliation(s)
| | - Shuai Nie
- Mass Spectrometry and Proteomics Facility, Bio21 Molecular Science and Biotechnology InstituteUniversity of MelbourneMelbourneVictoria3052Australia
| | - Alexander Idnurm
- School of BioSciencesUniversity of MelbourneMelbourneVictoria3010Australia
| | - Jamie Selby‐Pham
- School of BioSciencesUniversity of MelbourneMelbourneVictoria3010Australia
- Cannabis and Biostimulants Research Group Pty LtdMelbourneVictoria3020Australia
| | - Robert Walker
- School of BioSciencesUniversity of MelbourneMelbourneVictoria3010Australia
| | - Berin A. Boughton
- School of BioSciencesUniversity of MelbourneMelbourneVictoria3010Australia
- Australian National Phenome CentreMurdoch UniversityPerthWestern Australia6150Australia
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Espinales C, Romero-Peña M, Calderón G, Vergara K, Cáceres PJ, Castillo P. Collagen, protein hydrolysates and chitin from by-products of fish and shellfish: An overview. Heliyon 2023; 9:e14937. [PMID: 37025883 PMCID: PMC10070153 DOI: 10.1016/j.heliyon.2023.e14937] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 03/31/2023] Open
Abstract
Waste processing from fish and seafood manufacturers represents a sustainable option to prevent environmental contamination, and their byproducts offer different benefits. Transforming fish and seafood waste into valuable compounds that present nutritional and functional properties compared to mammal products becomes a new alternative in Food Industry. In this review, collagen, protein hydrolysates, and chitin from fish and seafood byproducts were selected to explain their chemical characteristics, production methodologies, and possible future perspectives. These three byproducts are gaining a significant commercial market, impacting the food, cosmetic, pharmaceutical, agriculture, plastic, and biomedical industries. For this reason, the extraction methodologies, advantages, and disadvantages are discussed in this review.
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11
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Alimi BA, Pathania S, Wilson J, Duffy B, Frias JMC. Extraction, quantification, characterization, and application in food packaging of chitin and chitosan from mushroom: A review. Int J Biol Macromol 2023; 237:124195. [PMID: 36972819 DOI: 10.1016/j.ijbiomac.2023.124195] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 03/12/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023]
Abstract
The application of chitin in food systems is limited by its insolubility in some common solvents and poor degradability. Hence, it is deacetylated to obtain chitosan, an industrially important derivative with excellent biological properties. Fungal-sourced chitosan is gaining prominence and industrial attraction because of its superior functional and biological properties, and vegan appeal. Further, the absence of such compounds as tropomyosin, myosin light chain, and arginine kinase, which are known to trigger allergic reactions, gives it an edge over marine-sourced chitosan in food and pharmaceutical applications. Mushrooms are macro-fungi with a significant content of chitin, with many authors reporting the highest content to be in the mushroom stalks. This indicates a great potential for the valorisation of a hitherto waste product. Hence, this review was written to provide a global summary of literature reports on the extraction and yield of chitin and chitosan from different fruiting parts of some species of mushroom, different methods used to quantify extracted chitin, as well as physicochemical properties of chitin and chitosan from some mushroom species are presented. Critical comparisons of reports on chitin and chitosan from mushrooms and other sources are made. This report concludes with an exposition of the potential application of mushroom-sourced chitosan for food packaging application. The reports from this review provide a very positive outlook regarding the use of mushrooms as a sustainable source of chitin and chitosan and the subsequent application of chitosan as a functional component in food packaging.
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Affiliation(s)
| | - Shivani Pathania
- Food Industry Development Department, Teagasc Food Research Centre, Ashtown, Dublin-15, Ireland
| | - Jude Wilson
- MBio, Monaghan Mushrooms, Tyholland, Co. Monaghan, Ireland
| | - Brendan Duffy
- Centre for Research in Engineering and Surface Technology (CREST), FOCAS Institute, Technological University Dublin-City Campus, Kevin Street, Dublin D08 NF82, Ireland
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12
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Li Z, Hu J, Sun Q, Zhang X, Chang R, Wang Y. A novel elicitor protein phosphopentomutase from Bacillus velezensis LJ02 enhances tomato resistance to Botrytis cinerea. FRONTIERS IN PLANT SCIENCE 2022; 13:1064589. [PMID: 36523612 PMCID: PMC9746712 DOI: 10.3389/fpls.2022.1064589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 11/04/2022] [Indexed: 06/17/2023]
Abstract
The loss of tomatoes caused by Botrytis cinerea (B. cinerea) is one of the crucial issues restricting the tomato yield. This study screened the elicitor protein phosphopentomutase from Bacillus velezensis LJ02 (BvEP) which improves the tomato resistance to B. cinerea. Phosphatemutase was reported to play a crucial role in the nucleoside synthesis of various microorganisms. However, there is no report on improving plant resistance by phosphopentomutase, and the related signaling pathway in the immune response has not been elucidated. High purity recombinant BvEP protein have no direct inhibitory effect on B. cinerea in vitro,and but induce the hypersensitivity response (HR) in Nicotiana tabacum. Tomato leaves overexpressing BvEP were found to be significantly more resistant to B. cinerea by Agrobacterium-mediated genetic transformation. Several defense genes, including WRKY28 and PTI5 of PAMP-triggered immunity (PTI), UDP and UDP1 of effector-triggered immunity (ETI), Hin1 and HSR203J of HR, PR1a of systemic acquired resistance (SAR) and the SAR related gene NPR1 were all up-regulated in transgenic tomato leaves overexpressing BvEP. In addition, it was found that transient overexpression of BvEP reduced the rotting rate and lesion diameter of tomato fruits caused by B. cinerea, and increased the expression of PTI, ETI, SAR-related genes, ROS content, SOD and POD activities in tomato fruits, while there was no significant effect on the weight loss and TSS, TA and Vc contents of tomato fruits. This study provides new insights into innovative breeding of tomato disease resistance and has great significance for loss reduction and income enhancement in the tomato industry.
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Affiliation(s)
- Zhuoran Li
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin, China
| | - Jianan Hu
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin, China
| | - Qi Sun
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin, China
| | - Xi Zhang
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin, China
| | - Ruokui Chang
- College of Engineering and Technology Architecture, Tianjin Agricultural University, Tianjin, China
| | - Yuanhong Wang
- College of Horticulture and Landscape Architecture, Tianjin Agricultural University, Tianjin, China
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13
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Valle-Sotelo EG, Troncoso-Rojas R, Tiznado-Hernández ME, Carvajal-Millán E, Sánchez-Estrada A, Henry García Y. Bioefficacy of fungal chitin oligomers in the control of postharvest decay in tomato fruit. INTERNATIONAL FOOD RESEARCH JOURNAL 2022. [DOI: 10.47836/ifrj.29.5.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Tomato is one of the most commercialised and consumed fruits worldwide. However, tomatoes are highly susceptible to Alternaria rot. Among the safe strategies proposed to control Alternaria rot is the induction of defence mechanisms through biological elicitors, such as chitin. Chitin and its oligosaccharides are an activate plant defence mechanisms, but studies of fruits exposed to fungal chitin fragments are scarce. Therefore, the present work aimed to obtain and partially characterise chitin oligomers of Alternaria alternata, and evaluate their effect on the defence mechanism of tomato fruits and their tolerance to Alternaria rot. The chitin oligomers obtained had a molecular weight of ≤ 1 kDa, 12% N-acetyl-glucosamine, 0.2% residual protein, and were 94% acetylated. These oligomers markedly increased the enzymatic activity of chitinase and β-1,3-glucanase in tomato fruits, and the development of Alternaria rot was inhibited by 78%. Chitin oligomers of A. alternata represent a promising alternative to attenuate Alternaria rot in tomato fruits through an enzymatic defence mechanism.
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14
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Wang K, Auzane A, Overmyer K. The immunity priming effect of the Arabidopsis phyllosphere resident yeast Protomyces arabidopsidicola strain C29. Front Microbiol 2022; 13:956018. [PMID: 36118213 PMCID: PMC9478198 DOI: 10.3389/fmicb.2022.956018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 08/15/2022] [Indexed: 11/20/2022] Open
Abstract
The phyllosphere is a complex habitat for diverse microbial communities. Under natural conditions, multiple interactions occur between host plants and phyllosphere resident microbes, such as bacteria, oomycetes, and fungi. Our understanding of plant associated yeasts and yeast-like fungi lags behind other classes of plant-associated microbes, largely due to a lack of yeasts associated with the model plant Arabidopsis, which could be used in experimental model systems. The yeast-like fungal species Protomyces arabidopsidicola was previously isolated from the phyllosphere of healthy wild-growing Arabidopsis, identified, and characterized. Here we explore the interaction of P. arabidopsidicola with Arabidopsis and found P. arabidopsidicola strain C29 was not pathogenic on Arabidopsis, but was able to survive in its phyllosphere environment both in controlled environment chambers in the lab and under natural field conditions. Most importantly, P. arabidopsidicola exhibited an immune priming effect on Arabidopsis, which showed enhanced disease resistance when subsequently infected with the fungal pathogen Botrytis cinerea. Activation of the mitogen-activated protein kinases (MAPK), camalexin, salicylic acid, and jasmonic acid signaling pathways, but not the auxin-signaling pathway, was associated with this priming effect, as evidenced by MAPK3/MAPK6 activation and defense marker expression. These findings demonstrate Arabidopsis immune defense priming by the naturally occurring phyllosphere resident yeast species, P. arabidopsidicola, and contribute to establishing a new interaction system for probing the genetics of Arabidopsis immunity induced by resident yeast-like fungi.
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15
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Tang Q, Zheng X, Chen W, Ye X, Tu P. Metabolomics reveals key resistant responses in tomato fruit induced by Cryptococcus laurentii. FOOD CHEMISTRY. MOLECULAR SCIENCES 2022; 4:100066. [PMID: 35415684 PMCID: PMC8991715 DOI: 10.1016/j.fochms.2021.100066] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/02/2021] [Accepted: 12/18/2021] [Indexed: 11/16/2022]
Abstract
Cryptococcus laurentii induces resistance through in concert with key metabolic changes in tomato fruit. A total of 59 metabolites were differently abundant in C. laurentii-treated tomato fruit. Key metabolites chlorogenic acid, caffeic acid and ferulic acid are involved in phenylpropanoid biosynthesis pathway may play a key role in resistance induction by C. Laurentii in tomato.
To investigate the mechanisms underlying inducible resistance in postharvest tomato fruit, non-targeted metabolome analysis was performed to uncover metabolic changes in tomato fruit upon Cryptococcus laurentii treatment. 289 and 149 metabolites were identified in positive and negative ion modes, respectively. A total of 59 metabolites, mainly including phenylpropanoids, flavonoids and phenolic acids, were differently abundant in C. laurentii-treated tomato fruit. Moreover, key metabolites involved in phenylpropanoid biosynthesis pathway, especially chlorogenic acid, caffeic acid and ferulic acid were identified through KEGG enrichment analysis. Enhanced levels of phenolic acids indicated activation of the phenylpropanoid biosynthesis pathway, which is a classic metabolic pathway associated with inducible resistance, suggesting that its activation and consequent metabolic changes contributed to inducible resistence induced by C. laurentii. Our findings would provide new understanding of resistance induction mechanism in tomato fruit from the metabolic perspective, and offer novel insights for new approaches reducing postharvest loss on tomato.
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Affiliation(s)
- Qiong Tang
- College of Biosystems Engineering and Food Science, National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China
| | - Xiaodong Zheng
- College of Biosystems Engineering and Food Science, National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China
| | - Wen Chen
- College of Biosystems Engineering and Food Science, National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China
| | - Xiang Ye
- College of Biosystems Engineering and Food Science, National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China
| | - Pengcheng Tu
- College of Biosystems Engineering and Food Science, National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China
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16
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Aluminum sulfate inhibits green mold by inducing chitinase activity of Penicillium digitatum and enzyme activity of citrus fruit. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.108854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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17
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Liao J, Huang H. Preparation, Characterization and Gelation of a Fungal Nano Chitin Derived from Hericium erinaceus Residue. Polymers (Basel) 2022; 14:474. [PMID: 35160463 PMCID: PMC8838266 DOI: 10.3390/polym14030474] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/14/2022] [Accepted: 01/21/2022] [Indexed: 02/04/2023] Open
Abstract
Nano chitin is a promising biocompatible material with wide applications. In this work, a fungal-derived nano chitin was prepared from Hericium erinaceus residue via mineral/protein purification and subsequent TEMPO-mediated oxidation. The structure, dispersity, and gelation ability of the prepared fungal nano chitin were studied. The results showed that the average length and width of the prepared fungal nano chitin were 336.6 nm and 6.4 nm, respectively, and the aspect ratio exceeded 50:1. The nano chitin retained the basic structure of chitin, while the crystallization index was improved. In addition, the dispersity of the nano chitin in aqueous media was evaluated by the effective diameter, and the polydispersion index was mainly affected by pH and ionic strength. Under acetic acid "gas phase coagulation", the prepared nano chitin dispersions with mass concentrations of 0.2, 0.4, 0.6, and 0.8% were converted into gels by enhanced hydrogen bond crosslinking between nano chitins.
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Affiliation(s)
- Jing Liao
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China;
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Huihua Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
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18
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Yin H, Song P, Chen X, Xiao M, Tang L, Huang H. Smart pH-Sensitive Hydrogel Based on the Pineapple Peel-Oxidized Hydroxyethyl Cellulose and the Hericium erinaceus Residue Carboxymethyl Chitosan for Use in Drug Delivery. Biomacromolecules 2021; 23:253-264. [PMID: 34937335 DOI: 10.1021/acs.biomac.1c01239] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Pineapple and hericium erinaceus (HE) produce a lot of residues in the process of food processing. These processed residues are good potential derivative precursors. In this investigation, a simple and non-toxic method was developed to prepare one new composite hydrogel by the Schiff base reaction between the aldehyde group of oxidized hydroxyethyl cellulose (OHEC) from processed pineapple peel residue and the amino group of carboxymethyl chitosan (CMCS) from processed HE residue. Subsequently, a series of experiments toward these new hydrogel polymers including structure characterization and performances were applied. The resultant hydrogel polymers were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy and confirmed with thermogravimetry. It was observed that the modification of cellulose and chitin was adequate, and the synthesis of OHEC/CMCS hydrogel polymers was successful. The gelation time experiments indicated that the shortest gel time was 33 s at a mass ratio of 4:6 (OHEC-70:CMCS). The hydrogel showed good swelling properties. The maximum swelling rate reached 11.58 g/g, and the swelling rate decreased with the increase of the oxidation degree of OHEC. The drug delivery applications of the prepared hydrogel were evaluated with bovine serum albumin (BSA) as a model drug releasing in vitro. It was discovered that the BSA release from the hydrogel was pH sensitive under simulated gastrointestinal conditions. All of these attributes indicate that the novel prepared hydrogel polymers have the potential as good carriers for oral delivery of protein-type drugs.
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Affiliation(s)
- Huishuang Yin
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Peiqin Song
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Xingyu Chen
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Minxuan Xiao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Lu Tang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Huihua Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
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19
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García YH, Zamora OR, Troncoso-Rojas R, Tiznado-Hernández ME, Báez-Flores ME, Carvajal-Millan E, Rascón-Chu A. Toward Understanding the Molecular Recognition of Fungal Chitin and Activation of the Plant Defense Mechanism in Horticultural Crops. Molecules 2021; 26:molecules26216513. [PMID: 34770922 PMCID: PMC8587247 DOI: 10.3390/molecules26216513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/15/2021] [Accepted: 10/22/2021] [Indexed: 11/25/2022] Open
Abstract
Large volumes of fruit and vegetable production are lost during postharvest handling due to attacks by necrotrophic fungi. One of the promising alternatives proposed for the control of postharvest diseases is the induction of natural defense responses, which can be activated by recognizing molecules present in pathogens, such as chitin. Chitin is one of the most important components of the fungal cell wall and is recognized through plant membrane receptors. These receptors belong to the receptor-like kinase (RLK) family, which possesses a transmembrane domain and/or receptor-like protein (RLP) that requires binding to another RLK receptor to recognize chitin. In addition, these receptors have extracellular LysM motifs that participate in the perception of chitin oligosaccharides. These receptors have been widely studied in Arabidopsis thaliana (A. thaliana) and Oryza sativa (O. sativa); however, it is not clear how the molecular recognition and plant defense mechanisms of chitin oligosaccharides occur in other plant species or fruits. This review includes recent findings on the molecular recognition of chitin oligosaccharides and how they activate defense mechanisms in plants. In addition, we highlight some of the current advances in chitin perception in horticultural crops.
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Affiliation(s)
- Yaima Henry García
- Coordinación de Tecnología en Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera Gustavo Enrique Astiazarán Rosas No. 46, Col. La Victoria, Hermosillo C.P. 83304, Mexico; (Y.H.G.); (O.R.Z.); (M.E.T.-H.); (A.R.-C.)
| | - Orlando Reyes Zamora
- Coordinación de Tecnología en Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera Gustavo Enrique Astiazarán Rosas No. 46, Col. La Victoria, Hermosillo C.P. 83304, Mexico; (Y.H.G.); (O.R.Z.); (M.E.T.-H.); (A.R.-C.)
| | - Rosalba Troncoso-Rojas
- Coordinación de Tecnología en Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera Gustavo Enrique Astiazarán Rosas No. 46, Col. La Victoria, Hermosillo C.P. 83304, Mexico; (Y.H.G.); (O.R.Z.); (M.E.T.-H.); (A.R.-C.)
- Correspondence:
| | - Martín Ernesto Tiznado-Hernández
- Coordinación de Tecnología en Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera Gustavo Enrique Astiazarán Rosas No. 46, Col. La Victoria, Hermosillo C.P. 83304, Mexico; (Y.H.G.); (O.R.Z.); (M.E.T.-H.); (A.R.-C.)
| | - María Elena Báez-Flores
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa. Calle de las Américas y Josefa Ortiz de Domínguez, Culiacán C.P. 80013, Mexico;
| | - Elizabeth Carvajal-Millan
- Coordinación de Tecnología en Alimentos de Origen Animal, Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera Gustavo Enrique Astiazarán Rosas No. 46, Col. La Victoria, Hermosillo C.P. 83304, Mexico;
| | - Agustín Rascón-Chu
- Coordinación de Tecnología en Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera Gustavo Enrique Astiazarán Rosas No. 46, Col. La Victoria, Hermosillo C.P. 83304, Mexico; (Y.H.G.); (O.R.Z.); (M.E.T.-H.); (A.R.-C.)
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20
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Enhancing the solubility of α-chitin in NaOH/urea aqueous solution by synergistic pretreatment of mechanical activation and metal salt. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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21
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Liao J, Dai H, Huang H. Construction of hydrogels based on the homogeneous carboxymethylated chitin from Hericium erinaceus residue: Role of carboxymethylation degree. Carbohydr Polym 2021; 262:117953. [PMID: 33838829 DOI: 10.1016/j.carbpol.2021.117953] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 02/27/2021] [Accepted: 03/14/2021] [Indexed: 11/18/2022]
Abstract
Carboxymethyl chitin hydrogels with different degree of substitution (DS) were prepared by the homogeneous carboxymethylation of chitin extracted from Hericium erinaceus residue. The effect of DS on gel structure and property were studied. Results showed that the DS of carboxymethyl chitin hydrogels can be increased by increasing the amount of sodium chloroacetate. The equilibrium swelling degree and pH swelling sensitivity of the hydrogels were enhanced as the increase of DS. Zeta potential, low-field nuclear magnetic resonance, contact angle and molecular dynamics simulation results suggested that the introduction of carboxymethyl functional group enhanced the negative charge, water mobility, surface hydrophilicity and the ability to form hydrogen bonds with water of the hydrogels, resulting in an increased swelling degree of the hydrogels. Moreover, the prepared hydrogels showed different adsorption capability to various dyes, and the adsorption performance of the prepared hydrogels for cationic dyes could be enhanced as the increase of DS.
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Affiliation(s)
- Jing Liao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Hongjie Dai
- College of Food Science, Southwest University, Chongqing, 400715, China
| | - Huihua Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China.
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22
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Characterization of chitin-glucan complex from Tremella fuciformis fermentation residue and evaluation of its antibacterial performance. Int J Biol Macromol 2021; 186:649-655. [PMID: 34118291 DOI: 10.1016/j.ijbiomac.2021.06.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 05/30/2021] [Accepted: 06/07/2021] [Indexed: 11/20/2022]
Abstract
Submerged fermentation of fungi is an efficient way to obtain extracellular polysaccharides, however, in this process, excess discarded biomass is produced. In this study, Tremella fuciformis mycelia were reused as the raw material to isolate a novel fungal chitin-glucan complex (CGC-TFM) using alkaline extraction. Characteristic analysis revealed that the CGC-TFM consisted of glucosamine/acetylglucosamine and glucose (GlcN:Glc = 26:74 mol%), indicating a reference to the β polymorphism of chitin-glucan complex, with the molecular weight and crystallinity index of 256 ± 3.0 kDa and 54.25 ± 1.04%, respectively. Fourier transform infrared spectroscopy, X-ray diffraction, nuclear magnetic resonance, and scanning electron microscopy analyses confirmed that the chitin portion of the CGC-TFM exhibited a typical β configuration and N-acetylation degree of 70.52 ± 2.09%. Furthermore, the CGC-TFM exhibited good thermal stability and effective Escherichia coli inhibition ability, indicating that it could be applied as a potential food packaging material.
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23
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Zheng X, Jiang H, Silvy EM, Zhao S, Chai X, Wang B, Li Z, Bi Y, Prusky D. Candida Oleophila Proliferated and Accelerated Accumulation of Suberin Poly Phenolic and Lignin at Wound Sites of Potato Tubers. Foods 2021; 10:foods10061286. [PMID: 34199817 PMCID: PMC8230253 DOI: 10.3390/foods10061286] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 05/30/2021] [Accepted: 06/02/2021] [Indexed: 11/16/2022] Open
Abstract
Candida oleophila is a type of biocontrol yeast offering effective postharvest disease control. To the best of our knowledge, the effect of C. oleophila upon the healing of tubers is yet to be studied. The present study addresses the existing knowledge gap by investigating the effect of C. oleophila on wound healing in potato tubers. The results show that C. oleophila colonized and proliferated at the wound sites during the early and intermediate stages of healing. In addition, C. oleophila reduced weight loss of wounded tubers, decreased disease index of inoculated tubers with Fusarium sulphureum, and accelerated accumulation of suberin poly phenolic (SPP) and lignin at wound sites. C. oleophila activated phenylpropanoid metabolism and increased the content of SPP monomers, total phenol, flavonoids, and lignin. Furthermore, the yeast increased H2O2 content as well as peroxidase activity.
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Affiliation(s)
- Xiaoyuan Zheng
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; (X.Z.); (H.J.); (E.M.S.); (S.Z.); (X.C.); (B.W.); (Z.L.); (D.P.)
| | - Hong Jiang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; (X.Z.); (H.J.); (E.M.S.); (S.Z.); (X.C.); (B.W.); (Z.L.); (D.P.)
| | - Esrat Mahmud Silvy
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; (X.Z.); (H.J.); (E.M.S.); (S.Z.); (X.C.); (B.W.); (Z.L.); (D.P.)
| | - Shijia Zhao
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; (X.Z.); (H.J.); (E.M.S.); (S.Z.); (X.C.); (B.W.); (Z.L.); (D.P.)
| | - Xiuwei Chai
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; (X.Z.); (H.J.); (E.M.S.); (S.Z.); (X.C.); (B.W.); (Z.L.); (D.P.)
| | - Bin Wang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; (X.Z.); (H.J.); (E.M.S.); (S.Z.); (X.C.); (B.W.); (Z.L.); (D.P.)
| | - Zhicheng Li
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; (X.Z.); (H.J.); (E.M.S.); (S.Z.); (X.C.); (B.W.); (Z.L.); (D.P.)
| | - Yang Bi
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; (X.Z.); (H.J.); (E.M.S.); (S.Z.); (X.C.); (B.W.); (Z.L.); (D.P.)
- Correspondence: ; Tel.: +86-931-7631113
| | - Dov Prusky
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; (X.Z.); (H.J.); (E.M.S.); (S.Z.); (X.C.); (B.W.); (Z.L.); (D.P.)
- Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Rishon LeZion 7505101, Israel
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Shahrajabian MH, Chaski C, Polyzos N, Tzortzakis N, Petropoulos SA. Sustainable Agriculture Systems in Vegetable Production Using Chitin and Chitosan as Plant Biostimulants. Biomolecules 2021; 11:biom11060819. [PMID: 34072781 PMCID: PMC8226918 DOI: 10.3390/biom11060819] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 12/25/2022] Open
Abstract
Chitin and chitosan are natural compounds that are biodegradable and nontoxic and have gained noticeable attention due to their effective contribution to increased yield and agro-environmental sustainability. Several effects have been reported for chitosan application in plants. Particularly, it can be used in plant defense systems against biological and environmental stress conditions and as a plant growth promoter—it can increase stomatal conductance and reduce transpiration or be applied as a coating material in seeds. Moreover, it can be effective in promoting chitinolytic microorganisms and prolonging storage life through post-harvest treatments, or benefit nutrient delivery to plants since it may prevent leaching and improve slow release of nutrients in fertilizers. Finally, it can remediate polluted soils through the removal of cationic and anionic heavy metals and the improvement of soil properties. On the other hand, chitin also has many beneficial effects such as plant growth promotion, improved plant nutrition and ability to modulate and improve plants’ resistance to abiotic and biotic stressors. The present review presents a literature overview regarding the effects of chitin, chitosan and derivatives on horticultural crops, highlighting their important role in modern sustainable crop production; the main limitations as well as the future prospects of applications of this particular biostimulant category are also presented.
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Affiliation(s)
- Mohamad Hesam Shahrajabian
- Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Fytokou Street, 38446 Volos, Greece; (C.C.); (N.P.)
- Correspondence: (M.H.S.); (S.A.P.); Tel.: +30-24210-93196 (S.A.P.)
| | - Christina Chaski
- Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Fytokou Street, 38446 Volos, Greece; (C.C.); (N.P.)
| | - Nikolaos Polyzos
- Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Fytokou Street, 38446 Volos, Greece; (C.C.); (N.P.)
| | - Nikolaos Tzortzakis
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, 3603 Limassol, Cyprus;
| | - Spyridon A. Petropoulos
- Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Fytokou Street, 38446 Volos, Greece; (C.C.); (N.P.)
- Correspondence: (M.H.S.); (S.A.P.); Tel.: +30-24210-93196 (S.A.P.)
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Karpova N, Shagdarova B, Lunkov A, Il'ina A, Varlamov V. Antifungal action of chitosan in combination with fungicides in vitro and chitosan conjugate with gallic acid on tomatoes against Botrytis cinerea. Biotechnol Lett 2021; 43:1565-1574. [PMID: 33974182 DOI: 10.1007/s10529-021-03138-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 04/23/2021] [Indexed: 11/28/2022]
Abstract
In the present work, a positive effect was obtained by using low molecular weight chitosan compounds in combination with synthetic fungicides. Antifungal activity against Botrytis cinerea, determined by the radial growth method, was more than 75%, with a 25 × 10- 10 g/L concentration of fludioxonil or difenoconazole in compounds. Metabolic activity of B. cinerea fungus was about 15% when using a chitosan compound containing fludioxonil at a concentration of 25 × 10- 7 g/L. The combined action of chitosan with difenoconazole at a fungicide concentration of 25 × 10- 4 g/L is 2-3 times more effective than the action of each component separately. Results of studies for artificially inoculated B. cinerea tomato fruit when treated with low molecular chitosan and chitosan conjugate with gallic acid reduced the frequency of rotting fruit by 50 and 83%, respectively. Chitosan-gallic acid conjugate were obtained from chitosans with Mw of 28 kDa (Ch28GA) was proved to be effective as a preventive treatment for 3 days and can potentially be used as a biofungicide against B. cinerea on tomatoes in the post-harvest period.
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Affiliation(s)
- Natalia Karpova
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 33, bld. 2 Leninsky Ave, Moscow, Russia, 119071
| | - Balzhima Shagdarova
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 33, bld. 2 Leninsky Ave, Moscow, Russia, 119071.
| | - Alexey Lunkov
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 33, bld. 2 Leninsky Ave, Moscow, Russia, 119071
| | - Alla Il'ina
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 33, bld. 2 Leninsky Ave, Moscow, Russia, 119071
| | - Valery Varlamov
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, 33, bld. 2 Leninsky Ave, Moscow, Russia, 119071
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Sun X, Wu Q, Picha DH, Ferguson MH, Ndukwe IE, Azadi P. Comparative performance of bio-based coatings formulated with cellulose, chitin, and chitosan nanomaterials suitable for fruit preservation. Carbohydr Polym 2021; 259:117764. [PMID: 33674020 DOI: 10.1016/j.carbpol.2021.117764] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 02/01/2021] [Accepted: 02/02/2021] [Indexed: 11/25/2022]
Abstract
Sustainable nanomaterials (SNMs) from wood, sugarcane and crab shell were prepared and used to coat selected fruits. The properties of SNMs and selected fruits were characterized and strawberry was used as an example to test antifungal activity and freshness preservation of the SNMs. The SNMs with their nano-structured morphology form strong shear-thinning dispersions for easy spraying on fruit surfaces. The fruit surface free energy was influenced by its surface morphology, predominant surface wax components, and cutin monomers. The antifungal activity of SNMs was influenced by their surface functional groups and particle size (crystals vs fibers). The coblend of wood nanocrystals (WCNCs) and chitosan nanofiber (CSNFs) exhibited the best antifungal property, which was comparable with the performance of the fungicide thiabendazole (80 mg L-1). The weight loss and color change of the WCNC/CSNF coated strawberries decreased by nearly half compared with the control samples, showing coating effectiveness on preserving fruit freshness.
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Affiliation(s)
- Xiuxuan Sun
- School of Renewable Natural Resources, Louisiana State University AgCenter, Baton Rouge, LA, 70803, United States
| | - Qinglin Wu
- School of Renewable Natural Resources, Louisiana State University AgCenter, Baton Rouge, LA, 70803, United States.
| | - David H Picha
- School of Plant, Environmental and Soil Sciences, Louisiana State University AgCenter, Baton Rouge, LA, 70803, United States
| | - Mary Helen Ferguson
- Tangipahoa Parish Extension Office, Louisiana State University AgCenter, Amite City, LA, 70422, United States
| | - Ikenna E Ndukwe
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, United States
| | - Parastoo Azadi
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, United States
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27
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Wang B, Bi Y. The role of signal production and transduction in induced resistance of harvested fruits and vegetables. FOOD QUALITY AND SAFETY 2021; 5. [DOI: 10.1093/fqsafe/fyab011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Abstract
Postharvest diseases are the primary reason causing postharvest loss of fruits and vegetables. Although fungicides show an effective way to control postharvest diseases, the use of fungicides is gradually being restricted due to safety, environmental pollution, and resistance development in the pathogen. Induced resistance is a new strategy to control postharvest diseases by eliciting immune activity in fruits and vegetables with exogenous physical, chemical, and biological elicitors. After being stimulated by elicitors, fruits and vegetables respond immediately against pathogens. This process is actually a continuous signal transduction, including the generation, transduction, and interaction of signal molecules. Each step of response can lead to corresponding physiological functions, and ultimately induce disease resistance by upregulating the expression of disease resistance genes and activating a variety of metabolic pathways. Signal molecules not only mediate defense response alone, but also interact with other signal transduction pathways to regulate the disease resistance response. Among various signal molecules, the second messenger (reactive oxygen species, nitric oxide, calcium ions) and plant hormones (salicylic acid, jasmonic acid, ethylene, and abscisic acid) play an important role in induced resistance. This article summarizes and reviews the research progress of induced resistance in recent years, and expounds the role of the above-mentioned signal molecules in induced resistance of harvested fruits and vegetables, and prospects for future research.
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Selvasekaran P, Mahalakshmi, Roshini F, Angalene LA, Chandini, Sunil T, Chidambaram R. Fungal Exopolysaccharides: Production and Biotechnological Industrial Applications in Food and Allied Sectors. Fungal Biol 2021. [DOI: 10.1007/978-3-030-68260-6_12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Xu L, Xia D, Zhang W, Guo Z, Jin G, Zhao Y, Zhang J. Large scale preparation of single chitin oligomers by the combination of homogeneous acid hydrolysis and reversed phase preparative chromatography. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2020. [DOI: 10.1016/j.carpta.2020.100016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Liao J, Huang H. Smart pH/magnetic sensitive Hericium erinaceus residue carboxymethyl chitin/Fe 3O 4 nanocomposite hydrogels with adjustable characteristics. Carbohydr Polym 2020; 246:116644. [PMID: 32747277 DOI: 10.1016/j.carbpol.2020.116644] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 05/09/2020] [Accepted: 06/11/2020] [Indexed: 10/24/2022]
Abstract
A smart hydrogel with pH/magnetic dual sensitivity was synthesized by in-situ synthesis of Fe3O4 inside carboxymethyl chitin hydrogel matrix prepared from Hericium erinaceus residue. The structure, pH/magnetic sensitivity, swelling and drug release behavior of the prepared hydrogels were investigated. The results showed that Fe3O4 nanoparticles were successfully synthesized and uniformly distributed within the hydrogels. The prepared hydrogels could be attracted by the magnet and exhibited sustained shrinkage behavior at low pH, with the desirable pH/magnetic sensitivity. The formed Fe3O4 could be developed inside the hydrogels by increasing the concentrations of precursor Fe2+/Fe3+ ions, and the magnetic sensitivity of hydrogels was enhanced, while the pH sensitivity and swelling degree were weakened. The Fe3O4 content-dependent behavior of the prepared hydrogels suggested the adjustable properties of hydrogels. The release of 5-Fu in simulated gastric and intestinal fluids followed the Fick diffusion mechanism and showed different release rates, indicating the pH-controlled drug release behavior.
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Affiliation(s)
- Jing Liao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Huihua Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China.
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Agricultural and Biomedical Applications of Chitosan-Based Nanomaterials. NANOMATERIALS 2020; 10:nano10101903. [PMID: 32987697 PMCID: PMC7598667 DOI: 10.3390/nano10101903] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 09/21/2020] [Accepted: 09/23/2020] [Indexed: 02/07/2023]
Abstract
Chitosan has emerged as a biodegradable, nontoxic polymer with multiple beneficial applications in the agricultural and biomedical sectors. As nanotechnology has evolved as a promising field, researchers have incorporated chitosan-based nanomaterials in a variety of products to enhance their efficacy and biocompatibility. Moreover, due to its inherent antimicrobial and chelating properties, and the availability of modifiable functional groups, chitosan nanoparticles were also directly used in a variety of applications. In this review, the use of chitosan-based nanomaterials in agricultural and biomedical fields related to the management of abiotic stress in plants, water availability for crops, controlling foodborne pathogens, and cancer photothermal therapy is discussed, with some insights into the possible mechanisms of action. Additionally, the toxicity arising from the accumulation of these nanomaterials in biological systems and future research avenues that had gained limited attention from the scientific community are discussed here. Overall, chitosan-based nanomaterials show promising characteristics for sustainable agricultural practices and effective healthcare in an eco-friendly manner.
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Zheng T, Zhang K, Sadeghnezhad E, Jiu S, Zhu X, Dong T, Liu Z, Guan L, Jia H, Fang J. Chitinase family genes in grape differentially expressed in a manner specific to fruit species in response to Botrytis cinerea. Mol Biol Rep 2020; 47:7349-7363. [PMID: 32914265 DOI: 10.1007/s11033-020-05791-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 08/28/2020] [Indexed: 01/03/2023]
Abstract
Chitinases (Chi), an important resistance-related protein, act against fungal pathogens by catalyzing the fungal cell wall, whereas are involved in different biological pathways in grape. In this study, we found 42 Chi family genes in Vitis vinifera L. (VvChis) and evaluated their expression levels after Botrytis infection, stress hormones like ethylene (ETH) and methyl-jasmonate (MeJA), and abiotic stresses like salinity and temperature changes in ripened fruits. VvChis were categorized into five groups including A, B, C, D, and E belonged to glycoside hydrolase family 18 and 19 (GH18 and GH19) according to genes structure, which expression analysis showed distinct temporal and spatial expression patterns changed in different tissues and various development stages. Different responsive elements to biotic and abiotic stresses were determined in the promoter regions of VvChis, specially elicitor-responsive element that was conserved among all VvChis genes. The expression levels of VvChis in groups A, B, and E increased after Botrytis cinerea infection in leaves and berries. Meanwhile, VvChis in glycoside hydrolase family 18 (GH18) were up-regulated under MeJA and ETH treatment, although the induction of VvChis by low temperature was more significant than high temperature. The expression of VvChis was also positively correlated with the concentration of NaCl treatment. Furthermore, differential gene-overexpression of VvChi5, VvChi17, VvChi22, VvChi26, and VvChi31 in strawberry and tomato fruits demonstrated the involvement of various isoforms in resistance to Botrytis infection through antioxidant system and lignin accumulation, which led to a reduction of damage. Among different isoforms of VvChis, we confirmed the interaction of Chi17 with Metallothionein (MTL) as oxidative stress protection, which suggests VvChis can modulate oxidative stress during postharvest storage in ripened fruits.
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Affiliation(s)
- Ting Zheng
- College of Horticulture, Nanjing Agricultural University, Nanjing City, 210095, Jiangsu Province, People's Republic of China
| | - Kekun Zhang
- College of Enology, Northwest A&F University, Yangling, 712100, People's Republic of China
| | - Ehsan Sadeghnezhad
- College of Horticulture, Nanjing Agricultural University, Nanjing City, 210095, Jiangsu Province, People's Republic of China
| | - Songtao Jiu
- Department of Plant Science, Shanghai Jiao Tong University, Shanghai City, 200030, Shanghai, People's Republic of China
| | - Xudong Zhu
- College of Horticulture, Nanjing Agricultural University, Nanjing City, 210095, Jiangsu Province, People's Republic of China
| | - Tianyu Dong
- College of Horticulture, Nanjing Agricultural University, Nanjing City, 210095, Jiangsu Province, People's Republic of China
| | - Zhongjie Liu
- College of Horticulture, Nanjing Agricultural University, Nanjing City, 210095, Jiangsu Province, People's Republic of China
| | - Le Guan
- College of Horticulture, Nanjing Agricultural University, Nanjing City, 210095, Jiangsu Province, People's Republic of China
| | - Haifeng Jia
- College of Horticulture, Nanjing Agricultural University, Nanjing City, 210095, Jiangsu Province, People's Republic of China.
| | - Jinggui Fang
- College of Horticulture, Nanjing Agricultural University, Nanjing City, 210095, Jiangsu Province, People's Republic of China.
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Xu HL, Wei Y, Hao S. 4-Methylumbelliferone fused oxazole thioether derivatives: synthesis, characterization and antifungal activities. Nat Prod Res 2020; 36:707-713. [PMID: 32757631 DOI: 10.1080/14786419.2020.1798665] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Series of thioether derivatives containing 4-methylumbelliferone fused oxazole moiety were designed and synthesised, their structures were fully characterized by 1H NMR, 13C NMR and HR-ESI-MS as well. Moreover, the in vitro antifungal potency of the title compounds were preliminarily evaluated for their possible use as a fungicide. Meanwhile, ethyl thioethers 3aa and 3ba displayed remarkable inhibitory effect against the mycelium growth of Valsa mali and Botrytis cinerea with EC50 of 12-16 μg/mL. Furthermore, compounds 3aa and 3ba also exhibited > 88% protective and curative effect against B. cinerea on tomato fruits at 90 μg/mL. Additionally, the environmental toxicity of the title compounds against the brine shrimp Artemia salina were evaluated as well. The results indicated that most of the title compounds exhibited weak toxic to aquatic organism A. salina.
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Affiliation(s)
- Hong-Lei Xu
- Research Center of Agro-bionic Engineering & Technology of Shandong Province, College of Chemistry & Pharm, Qingdao Agricultural University, Qingdao, China
| | - Yan Wei
- Research Center of Agro-bionic Engineering & Technology of Shandong Province, College of Chemistry & Pharm, Qingdao Agricultural University, Qingdao, China
| | - Shuanghong Hao
- Research Center of Agro-bionic Engineering & Technology of Shandong Province, College of Chemistry & Pharm, Qingdao Agricultural University, Qingdao, China
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Liao J, Huang H. Extraction of a novel fungal chitin from Hericium erinaceus residue using multistep mild procedures. Int J Biol Macromol 2020; 156:1279-1286. [DOI: 10.1016/j.ijbiomac.2019.11.165] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/12/2019] [Accepted: 11/19/2019] [Indexed: 12/28/2022]
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36
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Shahbaz U. Chitin, Characteristic, Sources, and Biomedical Application. Curr Pharm Biotechnol 2020; 21:1433-1443. [PMID: 32503407 DOI: 10.2174/1389201021666200605104939] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/22/2020] [Accepted: 05/08/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND Chitin stands at second, after cellulose, as the most abundant polysaccharide in the world. Chitin is found naturally in marine environments as it is a crucial structural component of various marine organisms. METHODS Different amounts of waste chitin and chitosan can be discovered in the environment. Chitinase producing microbes help to hydrolyze chitin waste to play an essential function for the removal of chitin pollution in the Marine Atmosphere. Chitin can be converted by using chemical and biological methods into prominent derivate chitosan. Numerous bacteria naturally have chitin degrading ability. RESULTS Chitin shows promise in terms of biocompatibility, low toxicity, complete biodegradability, nontoxicity, and film-forming capability. The application of these polymers in the different sectors of biomedical, food, agriculture, cosmetics, pharmaceuticals could be lucrative. Moreover, the most recent achievement in nanotechnology is based on chitin and chitosan-based materials. CONCLUSION In this review, we examine chitin in terms of its natural sources and different extraction methods, chitinase producing microbes and chitin, chitosan together with its derivatives for use in biomedical and agricultural applications.
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Affiliation(s)
- Umar Shahbaz
- Jiangnan University, School of Biotechnology, Jiangnan University Wuxi, Jiansu, China
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37
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Liao J, Huang H. A fungal chitin derived from Hericium erinaceus residue: Dissolution, gelation and characterization. Int J Biol Macromol 2020; 152:456-464. [DOI: 10.1016/j.ijbiomac.2020.02.309] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/19/2020] [Accepted: 02/26/2020] [Indexed: 01/12/2023]
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38
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Zhang W, Zhao Y, Xu L, Song X, Yuan X, Sun J, Zhang J. Superfine grinding induced amorphization and increased solubility of α-chitin. Carbohydr Polym 2020; 237:116145. [DOI: 10.1016/j.carbpol.2020.116145] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 03/05/2020] [Accepted: 03/08/2020] [Indexed: 10/24/2022]
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39
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Liu J, Kennedy JF, Zhang X, Heng Y, Chen W, Chen Z, Wu X, Wu X. Preparation of alginate oligosaccharide and its effects on decay control and quality maintenance of harvested kiwifruit. Carbohydr Polym 2020; 242:116462. [PMID: 32564825 DOI: 10.1016/j.carbpol.2020.116462] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/12/2020] [Accepted: 05/14/2020] [Indexed: 12/21/2022]
Abstract
Alginate oligosaccharide (AOS) is a biological carbohydrate formed from the degradation of sodium alginate. AOS used in this study was enzymatically prepared and had varying degrees of polymerization (2-8). AOS applied to harvested kiwifruit stored at 25 °C inhibited gray mold, blue mold, and black rot. AOS inhibited pectin solubilization, gene expression of pectin methylesterase and polygalacturonase, and the corresponding enzyme activity of their encoded proteins in kiwifruit. In contrast, AOS induced antioxidant gene expression and enzyme activity, including catalase and superoxide dismutase. The level of total phenols and flavonoids in kiwifruit was also elevated. AOS treatment also had a beneficial effect on fruit quality. Collectively, the results indicate that postharvest treatment with AOS inhibits postharvest decay and prolongs fruit quality by suppressing cell wall degradation and eliciting antioxidants in harvested kiwifruit. AOS has the potential to be used to preserve and extend the postharvest quality of kiwifruit.
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Affiliation(s)
- Jia Liu
- Chongqing Key Laboratory of Economic Plant Biotechnology, College of Landscape Architecture and Life Science/Institute of Special Plants, Chongqing University of Arts and Sciences, Yongchuan, Chongqing 402160, China
| | - John F Kennedy
- Chembiotech Laboratories, Kyrewood House Tenbury Wells, Worcestershire, WR15 8SG, UK
| | - Xiaofang Zhang
- Department of Plant Pathology, China Agricultural University, Beijing, 100193, China
| | - Yin Heng
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Wei Chen
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Zhuo Chen
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
| | - Xian Wu
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China.
| | - Xuehong Wu
- Department of Plant Pathology, China Agricultural University, Beijing, 100193, China.
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40
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Varlamov VP, Il'ina AV, Shagdarova BT, Lunkov AP, Mysyakina IS. Chitin/Chitosan and Its Derivatives: Fundamental Problems and Practical Approaches. BIOCHEMISTRY (MOSCOW) 2020; 85:S154-S176. [PMID: 32087058 DOI: 10.1134/s0006297920140084] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this review, we present the data on the natural occurrence of chitin and its partially or fully deacetylated derivative chitosan, as well as their properties, methods of modification, and potential applications of derivatives with bactericidal, fungicidal, and antioxidant activities. The structure and physicochemical characteristics of the polymers, their functions, and features of chitin microbial synthesis and degradation, including the processes occurring in nature, are described. New data on the hydrolytic microorganisms capable of chitin degradation under extreme conditions are presented. Special attention is focused on the effect of physicochemical characteristics of chitosan, including molecular weight, degree of deacetylation, polydispersity index, and number of amino group derivatives (quaternized, succinyl, etc.) on the antimicrobial and antioxidant properties of modified polymers that can be of particular interest for biotechnology, medicine, and agriculture. Analysis of the available literature data confirms the importance of fundamental research to broaden our knowledge on the occurrence of chitin and chitosan in nature, their role in global biosphere cycles, and prospects of applied research aimed at using chitin, chitosan, and their derivatives in various aspects of human activity.
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Affiliation(s)
- V P Varlamov
- Laboratory of Biopolymer Engineering, Institute of Bioengineering, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 117312, Russia.
| | - A V Il'ina
- Laboratory of Biopolymer Engineering, Institute of Bioengineering, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 117312, Russia
| | - B Ts Shagdarova
- Laboratory of Biopolymer Engineering, Institute of Bioengineering, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 117312, Russia
| | - A P Lunkov
- Laboratory of Biopolymer Engineering, Institute of Bioengineering, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 117312, Russia
| | - I S Mysyakina
- Winogradsky Institute of Microbiology, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 117312, Russia
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41
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Liu X, Zhang X, Zhang X, Li F, Tian Y, Du M, Zhao H, Shao L. Antibacterial activity of
Osmunda japonica
(Thunb) polysaccharides and its effect on tomato quality maintenance during storage. Int J Food Sci Technol 2020. [DOI: 10.1111/ijfs.14541] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Xiaochen Liu
- College of Food Science Northeast Agricultural University Changjiang Road 600 Xiangfang District Harbin Heilongjiang Province 150030 China
| | - Xiuling Zhang
- College of Food Science Northeast Agricultural University Changjiang Road 600 Xiangfang District Harbin Heilongjiang Province 150030 China
| | - Xueting Zhang
- College of Food Science Northeast Agricultural University Changjiang Road 600 Xiangfang District Harbin Heilongjiang Province 150030 China
| | - Fengfeng Li
- College of Food Science Northeast Agricultural University Changjiang Road 600 Xiangfang District Harbin Heilongjiang Province 150030 China
| | - Yaqin Tian
- College of Food Science Northeast Agricultural University Changjiang Road 600 Xiangfang District Harbin Heilongjiang Province 150030 China
| | - Meiling Du
- College of Food Science Northeast Agricultural University Changjiang Road 600 Xiangfang District Harbin Heilongjiang Province 150030 China
| | - Hengtian Zhao
- Northeast Institute of Geography and Agroecology Chinese Academy of Sciences 138# Haping Road Nangang District Harbin Heilongjiang Province 150080 China
| | - Lingling Shao
- Northeast Institute of Geography and Agroecology Chinese Academy of Sciences 138# Haping Road Nangang District Harbin Heilongjiang Province 150080 China
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Liao J, Huang H. Magnetic sensitive Hericium erinaceus residue chitin/Cu hydrogel nanocomposites for H2 generation by catalyzing NaBH4 hydrolysis. Carbohydr Polym 2020; 229:115426. [DOI: 10.1016/j.carbpol.2019.115426] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 09/30/2019] [Accepted: 10/02/2019] [Indexed: 10/25/2022]
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Zhang C, Howlader P, Liu T, Sun X, Jia X, Zhao X, Shen P, Qin Y, Wang W, Yin H. Alginate Oligosaccharide (AOS) induced resistance to Pst DC3000 via salicylic acid-mediated signaling pathway in Arabidopsis thaliana. Carbohydr Polym 2019; 225:115221. [PMID: 31521273 DOI: 10.1016/j.carbpol.2019.115221] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 08/07/2019] [Accepted: 08/19/2019] [Indexed: 12/22/2022]
Abstract
Alginate Oligosaccharide (AOS) is a natural biological carbohydrate extracted from seaweed. In our study, Arabidopsis thaliana was used to evaluate the AOS-induced resistance to Pseudomonas syringae pv. tomato DC3000 (Pst DC3000). Resistance was vitally enhanced at 25 mg/L in wild type (WT), showing the decreased disease index and bacteria colonies, burst of ROS and NO, high transcription expression of resistance genes PR1 and increased content of salicylic acid (SA). In SA deficient mutant (sid2), AOS-induced disease resistance dropped obviously compared to WT. The disease index was significantly higher than WT and the expression of recA and avrPtoB are two and four times lower than WT, implying that AOS induces disease resistance injecting Pst DC3000 after three days treatment by arousing the SA pathway. Our results provide a reference for the profound research and application of AOS in agriculture.
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Affiliation(s)
- Chunguang Zhang
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Prianka Howlader
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tongmei Liu
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; College of Food Science and Engineering, Dalian Ocean University, Dalian 116023, China
| | - Xue Sun
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xiaochen Jia
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xiaoming Zhao
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Peili Shen
- Ministry of Agriculture Key Laboratory of Seaweed Fertilizers, Qingdao Brightmoon Seaweed Group Co Ltd., Qingdao, China
| | - Yimin Qin
- Ministry of Agriculture Key Laboratory of Seaweed Fertilizers, Qingdao Brightmoon Seaweed Group Co Ltd., Qingdao, China
| | - Wenxia Wang
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Heng Yin
- Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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Green magnetic hydrogels synthesis, characterization and flavourzyme immobilization based on chitin from Hericium erinaceus residue and polyvinyl alcohol. Int J Biol Macromol 2019; 138:462-472. [DOI: 10.1016/j.ijbiomac.2019.07.038] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/12/2019] [Accepted: 07/04/2019] [Indexed: 12/18/2022]
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Liao J, Huang H. Magnetic chitin hydrogels prepared from Hericium erinaceus residues with tunable characteristics: A novel biosorbent for Cu2+ removal. Carbohydr Polym 2019; 220:191-201. [DOI: 10.1016/j.carbpol.2019.05.074] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 05/23/2019] [Accepted: 05/25/2019] [Indexed: 12/18/2022]
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Liu C, Chen L, Zhao R, Li R, Zhang S, Yu W, Sheng J, Shen L. Melatonin Induces Disease Resistance to Botrytis cinerea in Tomato Fruit by Activating Jasmonic Acid Signaling Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6116-6124. [PMID: 31084000 DOI: 10.1021/acs.jafc.9b00058] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Melatonin acts as a crucial signaling molecule with multiple physiological functions in plant response to abiotic and biotic stresses. However, the impact and regulatory mechanism of melatonin on attenuating tomato fruit fungal decay are unclear. In this study, we investigated the potential roles of melatonin in modulating fruit resistance to Botrytis cinerea and explored related physiological and molecular mechanisms. The results revealed that disease resistance was strongly enhanced by melatonin treatment, and 50 μM was confirmed as the best concentration. Melatonin treatment increased the activities of defense-related enzymes and decreased hydrogen peroxide (H2O2) content with enhanced antioxidant enzyme activities. Moreover, we found that melatonin treatment increased methyl jasmonate (MeJA) content; up-regulated the expressions of SlLoxD, SlAOC, and SlPI II; and reduced the expressions of SlMYC2 and SlJAZ1. We postulated that melatonin played a positive role in tomato fruit resistance to Botrytis cinerea through regulating H2O2 level and JA signaling pathway.
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Affiliation(s)
- Chunxue Liu
- College of Food Science and Nutritional Engineering , China Agricultural University , Beijing 100083 , China
| | - Lingling Chen
- College of Food Science and Nutritional Engineering , China Agricultural University , Beijing 100083 , China
| | - Ruirui Zhao
- College of Food Science and Nutritional Engineering , China Agricultural University , Beijing 100083 , China
| | - Rui Li
- College of Food Science and Nutritional Engineering , China Agricultural University , Beijing 100083 , China
| | - Shujuan Zhang
- College of Food Science and Nutritional Engineering , China Agricultural University , Beijing 100083 , China
| | - Wenqing Yu
- College of Food Science and Nutritional Engineering , China Agricultural University , Beijing 100083 , China
| | - Jiping Sheng
- School of Agricultural Economics and Rural Development , Renmin University of China , Beijing 100872 , China
| | - Lin Shen
- College of Food Science and Nutritional Engineering , China Agricultural University , Beijing 100083 , China
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Malerba M, Cerana R. Recent Applications of Chitin- and Chitosan-Based Polymers in Plants. Polymers (Basel) 2019; 11:polym11050839. [PMID: 31072059 PMCID: PMC6572233 DOI: 10.3390/polym11050839] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/02/2019] [Accepted: 05/07/2019] [Indexed: 12/30/2022] Open
Abstract
In recent years, the use of complex molecules based on the natural biopolymer chitin and/or on its deacetylated derivative chitosan has resulted in great advantages for many users. In particular, industries involved in the production of drugs, cosmetics, biotechnological items, and food have achieved better results using these particular molecules. In plants, chitin- and chitosan-based molecules are largely used as safe and environmental-friendly tools to ameliorate crop productivity and conservation of agronomic commodities. This review summarizes the results of the last two years on the application of chitin- and chitosan-based molecules on plant productivity. The open questions and future perspectives to overcome the present gaps and limitations are also discussed.
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Affiliation(s)
- Massimo Malerba
- Dipartimento di Biotecnologie e Bioscienze, Università degli Studi di Milano-Bicocca, 20126 Milan, Italy.
| | - Raffaella Cerana
- Dipartimento di Scienze dell'Ambiente e della Terra, Università degli Studi di Milano-Bicocca, 20126 Milan, Italy.
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