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Yang L, Qu M, Wang Z, Huang S, Wang Q, Wei M, Li F, Yang D, Pan L. Biochemical Properties of a Novel Cold-Adapted GH19 Chitinase with Three Chitin-Binding Domains from Chitinilyticum aquatile CSC-1 and Its Potential in Biocontrol of Plant Pathogenic Fungi. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:19581-19593. [PMID: 39190598 DOI: 10.1021/acs.jafc.4c02559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
GH19 (glycoside hydrolase 19) chitinases play crucial roles in the enzymatic conversion of chitin and biocontrol of phytopathogenic fungi. Herein, a novel multifunctional chitinase of GH19 (CaChi19A), which contains three chitin-binding domains (ChBDs), was successfully cloned from Chitinilyticum aquatile CSC-1 and heterologously expressed in Escherichia coli. We also generated truncated mutants of CaChi19A_ΔI, CaChi19A_ΔIΔII, and CaChi19A_CatD consisting of two ChBDs and a catalytic domain, one ChBD and a catalytic domain, and only a catalytic domain, respectively. CaChi19A, CaChi19A_ΔI, CaChi19A_ΔIΔII, and CaChi19A_CatD exhibited cold adaptation, as their relative enzyme activities at 5 °C were 40.7, 51.6, 66.2, and 82.6%, respectively. Compared with CaChi19A and other variants, CaChi19A_ΔIΔII demonstrated a higher level of stability below 50 °C and retained relatively high activity over a wide pH range of 5-12. Analysis of the hydrolysis products revealed that CaChi19A and CaChi19A_ΔIΔII exhibit exoacting, endoacting, and N-acetyl-β-d-glucosaminidase activities toward colloidal chitin. Furthermore, CaChi19A and CaChi19A_ΔIΔII exhibited inhibitory effects on the hyphal growth of Fusarium oxysporum, Fusarium redolens, Fusarium fujikuroi, Fusarium solani, and Coniothyrium diplodiella, thereby illustrating effective biocontrol activity. These results indicated that CaChi19A and CaChi19A_ΔIΔII show advantages in some applications where low temperatures were demanded in industries as well as the biocontrol of fungal diseases in agriculture.
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Affiliation(s)
- Liyan Yang
- National Key Laboratory of Non-food Biomass Energy Technology, Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Biology, Guangxi Academy of Sciences, Nanning 530007, China
| | - Mingbo Qu
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Zhou Wang
- National Key Laboratory of Non-food Biomass Energy Technology, Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Biology, Guangxi Academy of Sciences, Nanning 530007, China
| | - Shiyong Huang
- Guangxi Research Institute of Chemical Industry Co., Ltd., Nanning 530001, China
| | - Qingyan Wang
- National Key Laboratory of Non-food Biomass Energy Technology, Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Biology, Guangxi Academy of Sciences, Nanning 530007, China
| | - Maochun Wei
- Guangxi Research Institute of Chemical Industry Co., Ltd., Nanning 530001, China
| | - Fei Li
- National Key Laboratory of Non-food Biomass Energy Technology, Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Biology, Guangxi Academy of Sciences, Nanning 530007, China
| | - Dengfeng Yang
- National Key Laboratory of Non-food Biomass Energy Technology, Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Biology, Guangxi Academy of Sciences, Nanning 530007, China
| | - Lixia Pan
- National Key Laboratory of Non-food Biomass Energy Technology, Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Institute of Biology, Guangxi Academy of Sciences, Nanning 530007, China
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Chen JY, Sang H, Chilvers MI, Wu CH, Chang HX. Characterization of soybean chitinase genes induced by rhizobacteria involved in the defense against Fusarium oxysporum. FRONTIERS IN PLANT SCIENCE 2024; 15:1341181. [PMID: 38405589 PMCID: PMC10884886 DOI: 10.3389/fpls.2024.1341181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/08/2024] [Indexed: 02/27/2024]
Abstract
Rhizobacteria are capable of inducing defense responses via the expression of pathogenesis-related proteins (PR-proteins) such as chitinases, and many studies have validated the functions of plant chitinases in defense responses. Soybean (Glycine max) is an economically important crop worldwide, but the functional validation of soybean chitinase in defense responses remains limited. In this study, genome-wide characterization of soybean chitinases was conducted, and the defense contribution of three chitinases (GmChi01, GmChi02, or GmChi16) was validated in Arabidopsis transgenic lines against the soil-borne pathogen Fusarium oxysporum. Compared to the Arabidopsis Col-0 and empty vector controls, the transgenic lines with GmChi02 or GmChi16 exhibited fewer chlorosis symptoms and wilting. While GmChi02 and GmChi16 enhanced defense to F. oxysporum, GmChi02 was the only one significantly induced by Burkholderia ambifaria. The observation indicated that plant chitinases may be induced by different rhizobacteria for defense responses. The survey of 37 soybean chitinase gene expressions in response to six rhizobacteria observed diverse inducibility, where only 10 genes were significantly upregulated by at least one rhizobacterium and 9 genes did not respond to any of the rhizobacteria. Motif analysis on soybean promoters further identified not only consensus but also rhizobacterium-specific transcription factor-binding sites for the inducible chitinase genes. Collectively, these results confirmed the involvement of GmChi02 and GmChi16 in defense enhancement and highlighted the diverse inducibility of 37 soybean chitinases encountering F. oxysporum and six rhizobacteria.
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Affiliation(s)
- Jheng-Yan Chen
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei, Taiwan
| | - Hyunkyu Sang
- Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju, Republic of Korea
| | - Martin I. Chilvers
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI, United States
| | - Chih-Hang Wu
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
| | - Hao-Xun Chang
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei, Taiwan
- Master Program of Plant Medicine, National Taiwan University, Taipei, Taiwan
- Center of Biotechnology, National Taiwan University, Taipei, Taiwan
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Deng H, Wang F, Wu Q, Sun H, Ma J, Ni R, Li Z, Zhang L, Zhang J, Liu M. Novel Multiresistant Osmotin-like Protein from Sweetpotato as a Promising Biofungicide to Control Ceratocystis fimbriata by Destroying Spores through Accumulation of Reactive Oxygen Species. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:1487-1499. [PMID: 38215405 DOI: 10.1021/acs.jafc.3c07663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Abstract
Osmotin-like proteins (OLPs) play an important role in host-plant defense. In this study, a novel multiresistant OLP (IbOLP1) was screened from sweetpotato (Ipomoea batatas) with a molecular weight of 26.3 kDa. The expression level of IbOLP1 was significantly higher in resistant cultivars than susceptible ones after inoculation with Ceratocystis fimbriata, which causes black rot disease in sweetpotato. The expression of IbOLP1 in Pichia pastoris led to the lysis of yeast cells themselves. The recombinant IbOLP1 displayed antifungal, antibacterial, and antinematode activity and stability. IbOLP1 could restrain the mycelial growth and lyse spores of C. fimbriata, distinctly reducing the incidence of black rot in sweetpotato. The IbOLP1 can trigger the apoptosis of black rot spores by elevating the intracellular levels of reactive oxygen species. Collectively, these findings suggest that IbOLP1 can be used to develop natural antimicrobial resources instead of chemical agents and generate new, disease-resistant germplasm.
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Affiliation(s)
- Huangyue Deng
- Department of Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, Jiangsu Province 221116, China
| | - Fangrui Wang
- Department of Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, Jiangsu Province 221116, China
| | - Qian Wu
- Department of Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, Jiangsu Province 221116, China
| | - Houjun Sun
- Xuzhou Institute of Agricultural Sciences in Jiangsu, Xuhuai District, Xuzhou, Jiangsu Province 221131, China
| | - Jukui Ma
- Xuzhou Institute of Agricultural Sciences in Jiangsu, Xuhuai District, Xuzhou, Jiangsu Province 221131, China
| | - Rui Ni
- Department of Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, Jiangsu Province 221116, China
| | - Zongyun Li
- Department of Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, Jiangsu Province 221116, China
| | - Liming Zhang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong Province 250100, China
| | - Jian Zhang
- Department of Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, Jiangsu Province 221116, China
| | - Meiyan Liu
- Department of Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou, Jiangsu Province 221116, China
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Son DJ, Kim GG, Choo HY, Chung NJ, Choo YM. Functional Comparison of Three Chitinases from Symbiotic Bacteria of Entomopathogenic Nematodes. Toxins (Basel) 2024; 16:26. [PMID: 38251242 PMCID: PMC10821219 DOI: 10.3390/toxins16010026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/23/2024] Open
Abstract
Xenorhabdus and Photorhabdus, bacterial symbionts of entomopathogenic nematodes Steinernema and Heterorhabditis, respectively, have several biological activities including insecticidal and antimicrobial activities. Thus, XnChi, XhChi, and PtChi, chitinases of X. nematophila, X. hominickii, and P. temperata isolated from Korean indigenous EPNs S. carpocapsae GJ1-2, S. monticolum GJ11-1, and H. megidis GJ1-2 were cloned and expressed in Escherichia coli BL21 to compare their biological activities. Chitinase proteins of these bacterial symbionts purified using the Ni-NTA system showed different chitobiosidase and endochitinase activities, but N-acetylglucosamidinase activities were not shown in the measuring of chitinolytic activity through N-acetyl-D-glucosarmine oligomers. In addition, the proteins showed different insecticidal and antifungal activities. XnChi showed the highest insecticidal activity against Galleria mellonella, followed by PtChi and XhChi. In antifungal activity, XhChi showed the highest half-maximal inhibitory concentration (IC50) against Fusarium oxysporum with 0.031 mg/mL, followed by PtChi with 0.046 mg/mL, and XnChi with 0.072 mg/mL. XhChi also showed the highest IC50 against F. graminearum with 0.040 mg/mL, but XnChi was more toxic than PtChi with 0.055 mg/mL and 0.133 mg/mL, respectively. This study provides an innovative approach to the biological control of insect pests and fungal diseases of plants with the biological activity of symbiotic bacterial chitinases of entomopathogenic nematodes.
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Affiliation(s)
- Da-Jeong Son
- Department of Applied Bioscience, Dong-A University, Busan 49315, Republic of Korea;
- Division of Research and Development, Jinju Bioindustry Foundation, Jinju 52839, Republic of Korea
| | - Geun-Gon Kim
- Division of Research and Development, Nambo Co., Ltd., Jinju 52840, Republic of Korea; (G.-G.K.); (H.-Y.C.)
| | - Ho-Yul Choo
- Division of Research and Development, Nambo Co., Ltd., Jinju 52840, Republic of Korea; (G.-G.K.); (H.-Y.C.)
| | - Nam-Jun Chung
- Division of Research and Development, Nambo Co., Ltd., Jinju 52840, Republic of Korea; (G.-G.K.); (H.-Y.C.)
| | - Young-Moo Choo
- Division of Research and Development, Jinju Bioindustry Foundation, Jinju 52839, Republic of Korea
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Chen SP, Kuo YW, Lin JS. Review: Defense responses in sweetpotato (Ipomoea batatas L.) against biotic stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 337:111893. [PMID: 37813194 DOI: 10.1016/j.plantsci.2023.111893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/03/2023] [Accepted: 10/06/2023] [Indexed: 10/11/2023]
Abstract
Sweetpotato (Ipomoea batatas L.) is regarded as amongst the world's most important crops for food, vegetable, forage, and raw material for starch and alcohol production. Since pest attack and disease infection are the main limiting aspects frequently causing the yield loss and quality degradation of sweetpotato, it is a great demand to develop the effective defense strategies for maintaining productivity. In the past decade, many studies have focused on dynamic analysis at the physiological, biochemical, and molecular responses of sweetpotatoes to environmental challenges. This review offers an overview of the defense mechanisms against biotic stresses in sweetpotato observed so far, particularly insect herbivory and pathogen infections. The defenses of sweetpotato include the regulation of the toxic and anti-digestive proteins, plant-derived compounds, physical barrier formation, and sugar distribution. Ipomoelin and sporamin have been extensively researched for the defense against herbivore wounding. Herbivory-induced plant volatiles, chlorogenic acid, and latex phytochemicals play important roles in defenses for insect herbivory. Induction of IbSWEET10 reduces sugar content to mediate F. oxysporum resistance. Therefore, these researches provide the genetic strategies for improving resistance bioengineering and breeding of sweetpotato crops and future prospects for research in this field.
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Affiliation(s)
- Shi-Peng Chen
- Department of Horticulture and Biotechnology, Chinese Culture University, Taipei 11114, Taiwan.
| | - Yun-Wei Kuo
- Department of Agronomy, National Chung Hsing University, Taichung 40227, Taiwan.
| | - Jeng-Shane Lin
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan; Advanced Plant and Food Crop Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan.
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Cong H, Li C, Wang Y, Zhang Y, Ma D, Li L, Jiang J. The Mechanism of Transcription Factor Swi6 in Regulating Growth and Pathogenicity of Ceratocystis fimbriata: Insights from Non-Targeted Metabolomics. Microorganisms 2023; 11:2666. [PMID: 38004677 PMCID: PMC10673406 DOI: 10.3390/microorganisms11112666] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/22/2023] [Accepted: 10/25/2023] [Indexed: 11/26/2023] Open
Abstract
Ceratocystis fimbriata (C. fimbriata) is a notorious pathogenic fungus that causes sweet potato black rot disease. The APSES transcription factor Swi6 in fungi is located downstream of the cell wall integrity (CWI)-mitogen-activated protein kinase (MAPK) signaling pathway and has been identified to be involved in cell wall integrity and virulence in several filamentous pathogenic fungi. However, the specific mechanisms by which Swi6 regulates the growth and pathogenicity of plant pathogenic fungi remain elusive. In this study, the SWI6 deletion mutants and complemented strains of C. fimbriata were generated. Deletion of Swi6 in C. fimbriata resulted in aberrant growth patterns. Pathogenicity assays on sweet potato storage roots revealed a significant decrease in virulence in the mutant. Non-targeted metabolomic analysis using LC-MS identified a total of 692 potential differentially accumulated metabolites (PDAMs) in the ∆Cfswi6 mutant compared to the wild type, and the results of KEGG enrichment analysis demonstrated significant enrichment of PDAMs within various metabolic pathways, including amino acid metabolism, lipid metabolism, nucleotide metabolism, GPI-anchored protein synthesis, and ABC transporter metabolism. These metabolic pathways were believed to play a crucial role in mediating the growth and pathogenicity of C. fimbriata through the regulation of CWI. Firstly, the deletion of the SWI6 gene led to abnormal amino acid and lipid metabolism, potentially exacerbating energy storage imbalance. Secondly, significant enrichment of metabolites related to GPI-anchored protein biosynthesis implied compromised cell wall integrity. Lastly, disruption of ABC transport protein metabolism may hinder intracellular transmembrane transport. Importantly, this study represents the first investigation into the potential regulatory mechanisms of SWI6 in plant filamentous pathogenic fungi from a metabolic perspective. The findings provide novel insights into the role of SWI6 in the growth and virulence of C. fimbriata, highlighting its potential as a target for controlling this pathogen.
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Affiliation(s)
- Hao Cong
- The Key Laboratory of Biotechnology for Medicinal and Edible Plant Resources of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China; (H.C.); (C.L.); (Y.W.); (Y.Z.)
| | - Changgen Li
- The Key Laboratory of Biotechnology for Medicinal and Edible Plant Resources of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China; (H.C.); (C.L.); (Y.W.); (Y.Z.)
| | - Yiming Wang
- The Key Laboratory of Biotechnology for Medicinal and Edible Plant Resources of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China; (H.C.); (C.L.); (Y.W.); (Y.Z.)
| | - Yongjing Zhang
- The Key Laboratory of Biotechnology for Medicinal and Edible Plant Resources of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China; (H.C.); (C.L.); (Y.W.); (Y.Z.)
| | - Daifu Ma
- Chinese Academy of Agricultural Sciences Sweet Potato Research Institute, Xuzhou 221131, China;
| | - Lianwei Li
- The Key Laboratory of Biotechnology for Medicinal and Edible Plant Resources of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China; (H.C.); (C.L.); (Y.W.); (Y.Z.)
| | - Jihong Jiang
- The Key Laboratory of Biotechnology for Medicinal and Edible Plant Resources of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China; (H.C.); (C.L.); (Y.W.); (Y.Z.)
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Luo Z, Yao Z, Yang Y, Wang Z, Zou H, Zhang X, Chen J, Fang B, Huang L. Genetic fingerprint construction and genetic diversity analysis of sweet potato (Ipomoea batatas) germplasm resources. BMC PLANT BIOLOGY 2023; 23:355. [PMID: 37434130 DOI: 10.1186/s12870-023-04329-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 06/05/2023] [Indexed: 07/13/2023]
Abstract
BACKGROUND China is the largest producer of sweet potato in the world, accounting for 57.0% of the global output. Germplasm resources are the basis for promoting innovations in the seed industry and ensuring food security. Individual and accurate identification of sweet potato germplasm is an important part of conservation and efficient utilization. RESULTS In this study, nine pairs of simple sequence repeat molecular markers and 16 morphological markers were used to construct genetic fingerprints for sweet potato individual identification. Combined with basic information, typical phenotypic photographs, genotype peak graphs, and a two-dimensional code for detection and identification were generated. Finally, a genetic fingerprint database containing 1021 sweet potato germplasm resources in the "National Germplasm Guangzhou Sweet Potato Nursery Genebank in China" was constructed. Genetic diversity analysis of the 1021 sweet potato genotypes using the nine pairs of simple sequence repeat markers revealed a narrow genetic variation range of Chinese native sweet potato germplasm resources, and Chinese germplasm was close to that from Japan and the United States, far from that from the Philippines and Thailand, and the furthest from that from Peru. Sweet potato germplasm resources from Peru had the richest genetic diversity, supporting the view that Peru is the center of origin and domestication of sweet potato varieties. CONCLUSIONS Overall, this study provides scientific guidance for the conservation, identification, and utilization of sweet potato germplasm resources and offers a reference to facilitate the discovery of important genes to boost sweet potato breeding.
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Affiliation(s)
- Zhongxia Luo
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement/Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China
| | - Zhufang Yao
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement/Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China
| | - Yiling Yang
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement/Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China
| | - Zhangying Wang
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement/Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China
| | - Hongda Zou
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement/Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China
| | - Xiongjian Zhang
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement/Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China
| | - Jingyi Chen
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement/Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China
| | - Boping Fang
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement/Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China.
| | - Lifei Huang
- Guangdong Provincial Key Laboratory of Crops Genetics and Improvement/Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China.
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Zhang C, Zhao C, Zheng H, Li L, Zheng Y, Wu Z. Design, Synthesis, and Study of the Dual Action Mode of Novel N-Thienyl-1,5-disubstituted-4-pyrazole Carboxamides against Nigrospora oryzae. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7210-7220. [PMID: 37141153 DOI: 10.1021/acs.jafc.3c00269] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Due to the single target but extensive application of commercialized succinate dehydrogenase inhibitors (SDHIs), resistance problems have gradually become apparent in recent years. To solve this problem, a series of novel N-thienyl-1,5-disubstituted-1H-4-pyrazole carboxamide derivatives were designed and synthesized in this work based on the active skeleton 5-trifluoromethyl-4-pyrazole carboxamide. The bioassay results indicated that some target compounds exhibited excellent in vitro antifungal activities against the eight phytopathogenic fungi tested. Among them, the EC50 values of T4, T6, and T9 against Nigrospora oryzae were 5.8, 1.9, and 5.5 mg/L, respectively. The in vivo protective and curative activities of 40 mg/L T6 against rice infected with N. oryzae were 81.5% and 43.0%, respectively. Further studies revealed that T6 not only significantly inhibited the growth of N. oryzae mycelia but also effectively hindered spore germination and germ tube elongation. Morphological studies using scanning electron microscopy (SEM), fluorescence microscopy (FM), and transmission electron microscopy (TEM) found that T6 could affect the mycelium membrane integrity by increasing cell membrane permeability and causing peroxidation of cellular lipids, and these results were further verified by measuring the malondialdehyde (MDA) content. The IC50 value of T6 against succinate dehydrogenase (SDH) was 7.2 mg/L, lower than that of the commercialized SDHI penthiopyrad (3.4 mg/L). Further, ATP content detection and the results after docking T6 and penthiopyrad suggested that T6 was a potential SDHI. These studies demonstrated that active compound T6 could both inhibit the activity of SDH and affect the integrity of the cell membrane at the same time via a dual action mode, which is different from the mode of action of penthiopyrad. Thus, this study provides a new idea for a strategy to delay resistance and diversify the structures of SDHIs.
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Affiliation(s)
- Chengzhi Zhang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Cailong Zhao
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Huanlin Zheng
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Longju Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Ya Zheng
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Zhibing Wu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
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Liu M, Meng Q, Wang S, Yang K, Tian J. Research progress on postharvest sweet potato spoilage fungi Ceratocystis fimbriata and control measures. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Micocci KC, Moreira AC, Sanchez AD, Pettinatti JL, Rocha MC, Dionizio BS, Correa KCS, Malavazi I, Wouters FC, Bueno OC, Souza DHF. Identification, cloning, and characterization of a novel chitinase from leaf-cutting ant Atta sexdens: An enzyme with antifungal and insecticidal activity. Biochim Biophys Acta Gen Subj 2023; 1867:130249. [PMID: 36183893 DOI: 10.1016/j.bbagen.2022.130249] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/16/2022] [Accepted: 09/27/2022] [Indexed: 10/14/2022]
Abstract
Chitinases are enzymes that degrade chitin, a polysaccharide found in the exoskeleton of insects, fungi, yeast, and internal structures of other vertebrates. Although chitinases isolated from bacteria, fungi and plants have been reported to have antifungal or insecticide activities, chitinases from insects with these activities have been seldomly reported. In this study, a leaf-cutting ant Atta sexdens DNA fragment containing 1623 base pairs was amplified and cloned into a vector to express the protein (AsChtII-C4B1) in Pichia pastoris. AsChtII-C4B1, which contains one catalytic domain and one carbohydrate-binding module (CBM), was secreted to the extracellular medium and purified by ammonium sulfate precipitation followed by nickel column chromatography. AsChtII-C4B1 showed maximum activity at pH 5.0 and 55 °C when tested against colloidal chitin substrate and maintained >60% of its maximal activity in different temperatures during 48 h. AsChtII-C4B1 decreased the survival of Spodoptera frugiperda larvae fed with an artificial diet that contained AsChtII-C4B1. Our results have indicated that AsChtII-C4B1 has a higher effect on larva-pupa than larva-larva molts. AsChtII-C4B1 activity targets more specifically the growth of filamentous fungus than yeast. This work describes, for the first time, the obtaining a recombinant chitinase from ants and the characterization of its insecticidal and antifungal activities.
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Affiliation(s)
- Kelli C Micocci
- Center for the Study of Social Insects, São Paulo State University "Julio de Mesquita Filho", Rio Claro, SP, Brazil
| | - Ariele C Moreira
- Department of Physics, Chemistry and Mathematics, Federal University of São Carlos, Sorocaba, SP, Brazil
| | - Amanda D Sanchez
- Department of Chemistry, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Jessica L Pettinatti
- Department of Chemistry, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Marina C Rocha
- Department of Genetics and Evolution, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Bruna S Dionizio
- Department of Chemistry, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Katia C S Correa
- Department of Chemistry, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Iran Malavazi
- Department of Genetics and Evolution, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Felipe C Wouters
- Department of Chemistry, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Odair C Bueno
- Center for the Study of Social Insects, São Paulo State University "Julio de Mesquita Filho", Rio Claro, SP, Brazil
| | - Dulce Helena F Souza
- Department of Chemistry, Federal University of São Carlos, São Carlos, SP, Brazil.
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Kabir SR, Karim MR, Alam MT. Chitinase inhibits growth of human breast and colorectal cancer cells in vitro and Ehrlich ascites carcinoma cells in vivo. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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12
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Liu J, Xu Q, Wu Y, Sun D, Zhu J, Liu C, Liu W. Carbohydrate-binding modules of ChiB and ChiC promote the chitinolytic system of Serratia marcescens BWL1001. Enzyme Microb Technol 2022; 162:110118. [DOI: 10.1016/j.enzmictec.2022.110118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 08/22/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022]
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13
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Sathiyabama M, Akila G. Water soluble Chitosan extraction from mycelium of Alternaria solani and its field evaluation on Tomato plants. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2021. [DOI: 10.1016/j.carpta.2021.100101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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14
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Guo DJ, Li DP, Singh RK, Singh P, Sharma A, Verma KK, Qin Y, Khan Q, Lu Z, Malviya MK, Song XP, Xing YX, Li YR. Differential Protein Expression Analysis of Two Sugarcane Varieties in Response to Diazotrophic Plant Growth-Promoting Endophyte Enterobacter roggenkampii ED5. FRONTIERS IN PLANT SCIENCE 2021; 12:727741. [PMID: 34887881 PMCID: PMC8649694 DOI: 10.3389/fpls.2021.727741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 10/18/2021] [Indexed: 05/24/2023]
Abstract
Plant endophytic bacteria have many vital roles in plant growth promotion (PGP), such as nitrogen (N) fixation and resistance to biotic and abiotic stresses. In this study, the seedlings of sugarcane varieties B8 (requires a low concentration of nitrogen for growth) and GT11 (requires a high concentration of nitrogen for growth) were inoculated with endophytic diazotroph Enterobacter roggenkampii ED5, which exhibits multiple PGP traits, isolated from sugarcane roots. The results showed that the inoculation with E. roggenkampii ED5 promoted the growth of plant significantly in both sugarcane varieties. 15N detection at 60 days post-inoculation proved that the inoculation with strain ED5 increased the total nitrogen concentration in the leaf and root than control in both sugarcane varieties, which was higher in B8. Biochemical parameters and phytohormones in leaf were analyzed at 30 and 60 days after the inoculation. The results showed that the inoculation with E. roggenkampii ED5 improved the activities of superoxide dismutase (SOD), catalase (CAT), NADH-glutamate dehydrogenase (NADH-GDH), glutamine synthetase (GS), and endo-β-1,4-glucanase, and the contents of proline and indole acetic acid (IAA) in leaf, and it was generally more significant in B8 than in GT11. Tandem Mass Tags (TMT) labeling and liquid chromatography-tandem mass spectrometry (LC-MS/MS) were used to perform comparative proteomic analysis in the sugarcane leaves at 30 days after inoculation with strain ED5. A total of 27,508 proteins were detected, and 378 differentially expressed proteins (DEPs) were found in the treated sugarcane variety B8 (BE) as compared to control (BC), of which 244 were upregulated and 134 were downregulated. In contrast, a total of 177 DEPs were identified in the treated sugarcane variety GT11 (GE) as compared to control (GC), of which 103 were upregulated and 74 were downregulated. The DEPs were associated with nitrogen metabolism, photosynthesis, starch, sucrose metabolism, response to oxidative stress, hydrolase activity, oxidative phosphorylation, glutathione metabolism, phenylpropanoid metabolic process, and response to stresses in Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) database. To the best of our knowledge, this is the first proteomic approach to investigate the molecular basis of the interaction between N-fixing endophytic strain E. roggenkampii ED5 and sugarcane.
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Affiliation(s)
- Dao-Jun Guo
- College of Agriculture, Guangxi University, Nanning, China
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Dong-Ping Li
- Microbiology Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Rajesh Kumar Singh
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Pratiksha Singh
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Anjney Sharma
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Krishan K. Verma
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Ying Qin
- College of Agriculture, Guangxi University, Nanning, China
| | - Qaisar Khan
- College of Agriculture, Guangxi University, Nanning, China
| | - Zhen Lu
- College of Agriculture, Guangxi University, Nanning, China
| | - Mukesh K. Malviya
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Xiu-Peng Song
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Yong-Xiu Xing
- College of Agriculture, Guangxi University, Nanning, China
| | - Yang-Rui Li
- College of Agriculture, Guangxi University, Nanning, China
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
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15
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Habinshuti I, Zhang M, Sun H, Mu T. Effects of ultrasound‐assisted enzymatic hydrolysis and monosaccharides on structural, antioxidant and flavour characteristics of Maillard reaction products from sweet potato protein hydrolysates. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ildephonse Habinshuti
- Laboratory of Food Chemistry and Nutrition Science Institute of Food Science and Technology Chinese Academy of Agricultural Sciences; Key Laboratory of Agro‐Products Processing Ministry of Agriculture and Rural Affairs No. 2 Yuan Ming Yuan West RoadHaidian District Beijing 100193 China
| | - Miao Zhang
- Laboratory of Food Chemistry and Nutrition Science Institute of Food Science and Technology Chinese Academy of Agricultural Sciences; Key Laboratory of Agro‐Products Processing Ministry of Agriculture and Rural Affairs No. 2 Yuan Ming Yuan West RoadHaidian District Beijing 100193 China
| | - Hong‐Nan Sun
- Laboratory of Food Chemistry and Nutrition Science Institute of Food Science and Technology Chinese Academy of Agricultural Sciences; Key Laboratory of Agro‐Products Processing Ministry of Agriculture and Rural Affairs No. 2 Yuan Ming Yuan West RoadHaidian District Beijing 100193 China
| | - Tai‐Hua Mu
- Laboratory of Food Chemistry and Nutrition Science Institute of Food Science and Technology Chinese Academy of Agricultural Sciences; Key Laboratory of Agro‐Products Processing Ministry of Agriculture and Rural Affairs No. 2 Yuan Ming Yuan West RoadHaidian District Beijing 100193 China
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16
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Contribution of ultrasound and conventional hot water to the inactivation of Rhizopus stolonifer in sweet potato. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Yuan M, Ning C, Yang S, Liang Q, Mou H, Liu Z. A New Cold-Active Glucose Oxidase From Penicillium: High-Level Expression and Application in Fish Preservation. Front Microbiol 2020; 11:606007. [PMID: 33329498 PMCID: PMC7719636 DOI: 10.3389/fmicb.2020.606007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/03/2020] [Indexed: 11/13/2022] Open
Abstract
Glucose oxidase (GOx) with high enzyme activity at low temperature (4°C) is potentially useful for food preservation, especially for aquatic products preservation. A cold-active GOx with approximately 83% similarity to known protein sequences, was isolated from Penicillium sp. MX3343 and expressed in Pichia pastoris X33. Through high cell density fermentation, the yield of recombinant enzyme (named GOxP5) reached 458.6 U/mL. GOxP5 showed optimal activity at 30°C and pH 5.5, and was stable at a broad pH range from pH 2-6. Moreover, GOxP5 could maintain 72% maximum activity at 4°C, suggesting its application for the preservation of aquatic products at low-temperatures. Importantly, GOxP5 showed a good antimicrobial effect against common fish pathogenic bacteria (Listeria monocytogenes and Vibrio parahaemolyticus). Moreover, sensory, microbiological (total bacterial count), and physicochemical (total volatile basic nitrogen and pH) systematic analyses proved GOxP5 to be an excellent freshness preserving agent in the context of the grass carp. These favorable enzymatic properties of GOxP5 make it potentially useful in food biopreservation, and the effect was better compared to the commonly used chemical preservatives.
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Affiliation(s)
| | | | | | | | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Zhemin Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
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