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Mancheary John PU, Kandula SK, Cheekatla SS, Metta VSMK, Peddi K. Qualitative and Untargeted Volatilome Fingerprinting of Aspergillus sp. and Bulbithecium sp. by HS-SPME-GCMS and Functional Interactions. J Basic Microbiol 2024:e2400210. [PMID: 39014937 DOI: 10.1002/jobm.202400210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/30/2024] [Accepted: 06/26/2024] [Indexed: 07/18/2024]
Abstract
Research on fungal volatile organic compounds (VOCs) has increased worldwide in the last 10 years, but marine fungal volatilomes remain underexplored. Similarly, the hormone-signaling pathways, agronomic significance, and biocontrol potential of VOCs in plant-associated fungi make the area of research extremely promising. In the current investigation, VOCs of the isolates-Aspergillus sp. GSBT S13 and GSBT S14 from marine sediments, and Bulbithecium sp. GSBT E3 from Eucalyptus foliage were extracted using Head Space solid phase microextraction, followed by gas chromatography-mass spectrometry, identification, statistical analyses, and prediction of functions by KEGG COMPOUND and STITCH 5.0 databases. The significance of this research is fingerprinting VOCs of the isolates from distinct origins, identification of compounds using three libraries (NIST02, NIST14, and W9N11), and using bioinformatic tools to perform functional analysis. The most important findings include the identification of previously unreported compounds in fungi-1-methoxy naphthalene, diethyl phthalate, pentadecane, pristane, and nonanal; the prediction of the involvement of small molecules in the degradation of aromatic compound pathways and activation, inhibition, binding, and catalysis of metabolites with predicted protein partners. This study has ample opportunity to validate the findings and understand the mechanism or mode of action, the interspecies interactions, and the role of the metabolites in geochemical cycles.
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Affiliation(s)
- Prathyash Ushus Mancheary John
- Department of Biotechnology, GITAM School of Science, GITAM (Deemed-to-be-University), Visakhapatnam, Andhra Pradesh, India
| | - Siva Kumar Kandula
- Department of Biotechnology, GITAM School of Science, GITAM (Deemed-to-be-University), Visakhapatnam, Andhra Pradesh, India
| | - Satyanarayana Swamy Cheekatla
- Department of Biotechnology, GITAM School of Science, GITAM (Deemed-to-be-University), Visakhapatnam, Andhra Pradesh, India
| | | | - Koteswari Peddi
- Department of Biotechnology, GITAM School of Science, GITAM (Deemed-to-be-University), Visakhapatnam, Andhra Pradesh, India
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Ling L, Feng L, Li Y, Yue R, Wang Y, Zhou Y. Endophytic Fungi Volatile Organic Compounds as Crucial Biocontrol Agents Used for Controlling Fruit and Vegetable Postharvest Diseases. J Fungi (Basel) 2024; 10:332. [PMID: 38786687 PMCID: PMC11122075 DOI: 10.3390/jof10050332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 04/25/2024] [Accepted: 04/30/2024] [Indexed: 05/25/2024] Open
Abstract
Fruits and vegetables are an important part of the human diet, but during transportation and storage, microbial pathogens attack and spoil fruits and vegetables, causing huge economic losses to agriculture. Traditionally used chemical fungicides leave chemical residues, leading to environmental pollution and health risks. With the emphasis on food safety, biocontrol agents are attracting more and more attention due to their environmental friendliness. Endophytic fungi are present in plant tissues and do not cause host disease. The volatile organic compounds (VOCs) they produce are used to control postharvest diseases due to their significant antifungal activity, as well as their volatility, safety and environmental protection characteristics. This review provides the concept and characterization of endophytic fungal VOCs, concludes the types of endophytic fungi that release antifungal VOCs and their biological control mechanisms, as well as focuses on the practical applications and the challenges of applying VOCs as fumigants. Endophytic fungal VOCs can be used as emerging biocontrol resources to control postharvest diseases that affect fruits and vegetables.
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Affiliation(s)
- Lijun Ling
- College of Life Science, Northwest Normal University, Lanzhou 730070, China; (L.F.); (Y.L.); (R.Y.); (Y.W.); (Y.Z.)
- Bioactive Products Engineering Research Center for Gansu Distinctive Plants, Northwest Normal University, Lanzhou 730070, China
- New Rural Development Research Institute, Northwest Normal University, Lanzhou 730070, China
| | - Lijun Feng
- College of Life Science, Northwest Normal University, Lanzhou 730070, China; (L.F.); (Y.L.); (R.Y.); (Y.W.); (Y.Z.)
- Bioactive Products Engineering Research Center for Gansu Distinctive Plants, Northwest Normal University, Lanzhou 730070, China
| | - Yao Li
- College of Life Science, Northwest Normal University, Lanzhou 730070, China; (L.F.); (Y.L.); (R.Y.); (Y.W.); (Y.Z.)
- Bioactive Products Engineering Research Center for Gansu Distinctive Plants, Northwest Normal University, Lanzhou 730070, China
| | - Rui Yue
- College of Life Science, Northwest Normal University, Lanzhou 730070, China; (L.F.); (Y.L.); (R.Y.); (Y.W.); (Y.Z.)
- Bioactive Products Engineering Research Center for Gansu Distinctive Plants, Northwest Normal University, Lanzhou 730070, China
| | - Yuanyuan Wang
- College of Life Science, Northwest Normal University, Lanzhou 730070, China; (L.F.); (Y.L.); (R.Y.); (Y.W.); (Y.Z.)
- Bioactive Products Engineering Research Center for Gansu Distinctive Plants, Northwest Normal University, Lanzhou 730070, China
| | - Yongpeng Zhou
- College of Life Science, Northwest Normal University, Lanzhou 730070, China; (L.F.); (Y.L.); (R.Y.); (Y.W.); (Y.Z.)
- Bioactive Products Engineering Research Center for Gansu Distinctive Plants, Northwest Normal University, Lanzhou 730070, China
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Sun D, Li F, Wang L, Chen R, Liu F, Guo L, Li N, Zhang F, Lei L. Identification and application of an endophytic fungus Arcopilus aureus from Panax notoginseng against crop fungal disease. FRONTIERS IN PLANT SCIENCE 2024; 15:1305376. [PMID: 38384765 PMCID: PMC10880449 DOI: 10.3389/fpls.2024.1305376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 01/16/2024] [Indexed: 02/23/2024]
Abstract
Endophytic fungi are important microbial resources for developing novel antibacterial and antifungal drugs to prevent and control crop diseases. Panax notoginseng has been used as a Chinese medicinal herb for a long time, as it has various bioactivities. However, information on endophytic fungi isolated from Panax notoginseng is rare. In this study, an endophytic fungus known as SQGX-6, which was later identified as the golden hair fungus Arcopilus aureus, was isolated from Panax notoginseng. SQGX-6 was extracted using ethyl acetate, and the active components of the fungus were identified using ultra-performance liquid chromatography-mass spectrometry (UHPLC-MS). The antifungal and antioxidant activities of the extract were determined and evaluated in vitro and in vivo. SQGX-6 and its extract inhibited the growth of Corn stalk rot (Fusarium graminearum), Corn southern leaf blight (Helminthosporium maydis), and Tomato gray mold (Botrytis cinerea) in vitro. The free radical scavenging rates for 2,2-Diphenyl-1-pyridinyl hydrazide (DPPH) radical scavenging activity, 3-Ethylbenzothiazoline-6-Sulfonic Acid Radical scavenging (ABTS) activity were also downregulated by the SQGX-6 extract. In vivo, the SQGX-6 extract inhibited the mycelial growth rates of the three aforementioned fungi and downregulated malondialdehyde (MDA) content and upregulated peroxidase (POD) and phenylalanine ammonia-lyase (PAL) content in fruits, leading to significant reduction in damage to cherry tomatoes caused by Botrytis cinerea. UHPLC-MS was performed to identify various active substances, including Alkaloids, Azoles, Benzofurans, Coumarins, Flavonoids, Organic acids, Phenols, and plant growth regulators contained in the extract. These results suggested that the endophytic fungus SQGX-6 of Panax notoginseng and its extract have excellent antifungal and antioxidant activities, and thus, it is an important microbial resource for the developing novel drugs against plant fungal infections.
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Affiliation(s)
- Diangang Sun
- College of Agriculture, Yangtze University, Jingzhou, Hubei, China
| | - Fengyang Li
- State Key Laboratory for Zoonotic Diseases, College of Veterinary Medicine, Jilin University, Changchun, Jilin, China
| | - Lingling Wang
- College of Animal Science, Yangtze University, Jingzhou, Hubei, China
| | - Ruige Chen
- College of Animal Science, Yangtze University, Jingzhou, Hubei, China
| | - Feng Liu
- College of Animal Science, Yangtze University, Jingzhou, Hubei, China
| | - Liwei Guo
- College of Animal Science, Yangtze University, Jingzhou, Hubei, China
| | - Na Li
- State Key Laboratory for Zoonotic Diseases, College of Veterinary Medicine, Jilin University, Changchun, Jilin, China
| | - Fuxian Zhang
- College of Animal Science, Yangtze University, Jingzhou, Hubei, China
| | - Liancheng Lei
- State Key Laboratory for Zoonotic Diseases, College of Veterinary Medicine, Jilin University, Changchun, Jilin, China
- College of Animal Science, Yangtze University, Jingzhou, Hubei, China
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Zhang L, Bao L, Li S, Liu Y, Liu H. Active substances of myxobacteria against plant diseases and their action mechanisms. Front Microbiol 2024; 14:1294854. [PMID: 38260911 PMCID: PMC10800785 DOI: 10.3389/fmicb.2023.1294854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/13/2023] [Indexed: 01/24/2024] Open
Abstract
Myxobacteria have a complex life cycle and unique social behavior, and obtain nutrients by preying on bacteria and fungi in soil. Chitinase, β-1,3 glucanase and β-1,6 glucanase produced by myxobacteria can degrade the glycosidic bond of cell wall of some plant pathogenic fungi, resulting in a perforated structure in the cell wall. In addition, isooctanol produced by myxobacteria can lead to the accumulation of intracellular reactive oxygen species in some pathogenic fungi and induce cell apoptosis. Myxobacteria can also perforate the cell wall of some plant pathogenic oomycetes by β-1,3 glucanase, reduce the content of intracellular soluble protein and protective enzyme activity, affect the permeability of oomycete cell membrane, and aggravate the oxidative damage of pathogen cells. Small molecule compounds such as diisobutyl phthalate and myxovirescin produced by myxobacteria can inhibit the formation of biofilm and lipoprotein of bacteria, and cystobactamids can inhibit the activity of DNA gyrase, thus changing the permeability of bacterial cell membrane. Myxobacteria, as a new natural compound resource bank, can control plant pathogenic fungi, oomycetes and bacteria by producing carbohydrate active enzymes and small molecular compounds, so it has great potential in plant disease control.
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Affiliation(s)
- Lele Zhang
- College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Liangliang Bao
- College of Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Songyuan Li
- College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Yang Liu
- College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Huirong Liu
- College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
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Zhang J, Huang X, Yang S, Huang A, Ren J, Luo X, Feng S, Li P, Li Z, Dong P. Endophytic Bacillus subtilis H17-16 effectively inhibits Phytophthora infestans, the pathogen of potato late blight, and its potential application. PEST MANAGEMENT SCIENCE 2023; 79:5073-5086. [PMID: 37572366 DOI: 10.1002/ps.7717] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 08/03/2023] [Accepted: 08/13/2023] [Indexed: 08/14/2023]
Abstract
BACKGROUND As a highly prevalent epidemic disease of potato, late blight caused by Phytophthora infestans poses a serious threat to potato yield and quality. At present, chemical fungicides are mainly used to control potato late blight, but long-term overuse of chemical fungicides may lead to environmental pollution and human health threats. Endophytes, natural resources for plant diseases control, can promote plant growth, enhance plant resistance, and secrete antifungal substances. Therefore, there is an urgent need to find some beneficial endophytes to control potato late blight. RESULTS We isolated a strain of Bacillus subtilis H17-16 from potato healthy roots. It can significantly inhibit mycelial growth, sporangia germination and the pathogenicity of Phytophthora infestans, induce the resistance of potato to late blight, and promote potato growth. In addition, H17-16 has the ability to produce protease, volatile compounds (VOCs) and form biofilms. After H17-16 treatment, most of the genes involved in metabolism, virulence and drug resistance of Phytophthora infestans were down-regulated significantly, and the genes related to ribosome biogenesis were mainly up-regulated. Moreover, field and postharvest application of H17-16 can effectively reduce the occurrence of potato late blight, and the combination of H17-16 with chitosan or chemical fungicides had a better effect than single H17-16. CONCLUSION Our results reveal that Bacillus subtilis H17-16 has great potential as a natural fungicide for controlling potato late blight, laying a theoretical basis for its development as a biological control agent. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Jiaomei Zhang
- School of Life Sciences, Chongqing University, Chongqing, China
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Chongqing, China
| | - Xiaoqing Huang
- School of Life Sciences, Chongqing University, Chongqing, China
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Chongqing, China
| | - Shidong Yang
- Shandong Nongdeli Biotechnology Co., Ltd, Jinan, China
| | - Airong Huang
- School of Life Sciences, Chongqing University, Chongqing, China
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Chongqing, China
| | - Jie Ren
- School of Life Sciences, Chongqing University, Chongqing, China
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Chongqing, China
| | - Xunguang Luo
- School of Life Sciences, Chongqing University, Chongqing, China
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Chongqing, China
| | - Shun Feng
- School of Life Sciences, Chongqing University, Chongqing, China
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Chongqing, China
| | - Peihua Li
- College of Agronomy, Xichang University, Xichang, China
| | - Zhengguo Li
- School of Life Sciences, Chongqing University, Chongqing, China
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, Chongqing, China
| | - Pan Dong
- School of Life Sciences, Chongqing University, Chongqing, China
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Chongqing, China
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6
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Escudero-Leyva E, Quirós-Guerrero L, Vásquez-Chaves V, Pereira-Reyes R, Chaverri P, Tamayo-Castillo G. Differential Volatile Organic Compound Expression in the Interaction of Daldinia eschscholtzii and Mycena citricolor. ACS OMEGA 2023; 8:31373-31388. [PMID: 37663497 PMCID: PMC10468842 DOI: 10.1021/acsomega.3c03865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 07/31/2023] [Indexed: 09/05/2023]
Abstract
Fungi exhibit a wide range of ecological guilds, but those that live within the inner tissues of plants (also known as endophytes) are particularly relevant due to the benefits they sometimes provide to their hosts, such as herbivory deterrence, disease protection, and growth promotion. Recently, endophytes have gained interest as potential biocontrol agents against crop pathogens, for example, coffee plants (Coffea arabica). Published results from research performed in our laboratory showed that endophytic fungi isolated from wild Rubiaceae plants were effective in reducing the effects of the American leaf spot of coffee (Mycena citricolor). One of these isolates (GU11N) from the plant Randia grandifolia was identified as Daldinia eschscholtzii (Xylariales). Its antagonism mechanisms, effects, and chemistry against M. citricolor were investigated by analyzing its volatile profile alone and in the presence of the pathogen in contactless and dual culture assays. The experimental design involved direct sampling of agar plugs in vials for headspace (HS) and headspace solid-phase microextraction (HS-SPME) gas chromatography-mass spectrometry (GC-MS) analysis. Additionally, we used ultrahigh-performance liquid chromatography coupled to high-resolution mass spectrometry (UHPLC-HRMS/MS) to identify nonvolatile compounds from organic extracts of the mycelia involved in the interaction. Results showed that more volatile compounds were identified using HS-SPME (39 components) than those by the HS technique (13 components), sharing only 12 compounds. Statistical tests suggest that D. eschscholtzii inhibited the growth of M. citricolor through the release of VOCs containing a combination of 1,8-dimethoxynapththalene and terpene compounds affecting M. citricolor pseudopilei. The damaging effects of 1,8-dimethoxynaphthalene were corroborated in an in vitro test against M. citricolor pseudopilei; scanning electron microscopy (SEM) photographs confirmed structural damage. After analyzing the UHPLC-HRMS/MS data, a predominance of fatty acid derivatives was found among the putatively identified compounds. However, a considerable proportion of features (37.3%) remained unannotated. In conclusion, our study suggests that D. eschscholtzii has potential as a biocontrol agent against M. citricolor and that 1,8-dimethoxynaphthalene contributes to the observed damage to the pathogen's reproductive structures.
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Affiliation(s)
- Efraín Escudero-Leyva
- Centro
de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, 11520-2060 San José, Costa Rica
- Escuela
de Biología, Universidad de Costa
Rica, 11520-2060 San José, Costa Rica
| | - Luis Quirós-Guerrero
- Institute
of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1205 Geneva, Switzerland
- School
of Pharmaceutical Sciences, University of
Geneva, 1205 Geneva, Switzerland
| | - Víctor Vásquez-Chaves
- Centro
de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, 11520-2060 San José, Costa Rica
| | - Reinaldo Pereira-Reyes
- Laboratorio
Nacional de Nanotecnología (LANOTEC), Centro Nacional de Alta Tecnología, 10109 San Jose, Costa Rica
| | - Priscila Chaverri
- Centro
de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, 11520-2060 San José, Costa Rica
- Escuela
de Biología, Universidad de Costa
Rica, 11520-2060 San José, Costa Rica
- Department
of Natural Sciences, Bowie State University, Bowie, Maryland 20715, United States
| | - Giselle Tamayo-Castillo
- Centro
de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, 11520-2060 San José, Costa Rica
- Escuela
de Química, Universidad de Costa
Rica, 11520-2060 San José, Costa Rica
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Shi J, Huang T, Zhang Y, Xing Z, Yue X, Yuan S, Li H, Xu X, Zuo J, Wang Q. The effect of BVOCs produced by Lysinibacillus fusiformis and LED irradiation on pigment metabolism in stored broccoli. Food Chem 2023; 420:136068. [PMID: 37043993 DOI: 10.1016/j.foodchem.2023.136068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/19/2023] [Accepted: 03/26/2023] [Indexed: 04/04/2023]
Abstract
Volatile organic compounds produced by bacteria (BVOCs) have been proven to effect the postharvest metabolism of fruits and vegetables. The quality, color and antioxidant capacity of membrane lipids of broccoli in storage were effectively maintained by fumigation with BVOCs produced by Lysinibacillus fusiformis combined with white light emitting diode (LED) technology. An analysis of the transcriptome and metabolome of broccoli treated with the combined LED-BVOCs technology resulted in the identification of 49 differentially expressed genes (DEGs) and 13 differentially abundant metabolites (DAMs) involved in photosynthesis (32/0 DEGs upregulated/downregulated; 0/0 DAMs with increased/decreased abundance), chlorophyll (7/0; 1/2), carotenoid (5/0; 1/4) and flavonoid (3/3; 3/2) metabolism. The maintenance of green color in harvested broccoli treated by LED-BVOCs was associated with DEGs and DAMs that inhibited chlorophyll degradation and carotenoid accumulation. Our study provides a theoretical basis for understanding the delayed senescence of broccoli during storage using BVOCs-LED technology.
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Affiliation(s)
- Junyan Shi
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Institute of Agri-food Processing and Nutrition, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; Department of Food Science and Engineering, College of Biological Sciences and Biotechnology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing 100083, China
| | - Taishan Huang
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Institute of Agri-food Processing and Nutrition, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China
| | - Ying Zhang
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Institute of Agri-food Processing and Nutrition, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; College of Life Sciences, Dalian Minzu University, Dalian 116600, China
| | - Zengting Xing
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Institute of Agri-food Processing and Nutrition, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China
| | - Xiaozhen Yue
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Institute of Agri-food Processing and Nutrition, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Shuzhi Yuan
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Institute of Agri-food Processing and Nutrition, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Hua Li
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Xiangbin Xu
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China.
| | - Jinhua Zuo
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Institute of Agri-food Processing and Nutrition, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
| | - Qing Wang
- Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fruits and Vegetable Storage and Processing, Institute of Agri-food Processing and Nutrition, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
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Almeida OAC, de Araujo NO, Mulato ATN, Persinoti GF, Sforça ML, Calderan-Rodrigues MJ, Oliveira JVDC. Bacterial volatile organic compounds (VOCs) promote growth and induce metabolic changes in rice. FRONTIERS IN PLANT SCIENCE 2023; 13:1056082. [PMID: 36844905 PMCID: PMC9948655 DOI: 10.3389/fpls.2022.1056082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 12/13/2022] [Indexed: 06/18/2023]
Abstract
Plant growth-promoting bacteria (PGPB) represent an eco-friendly alternative to reduce the use of chemical products while increasing the productivity of economically important crops. The emission of small gaseous signaling molecules from PGPB named volatile organic compounds (VOCs) has emerged as a promising biotechnological tool to promote biomass accumulation in model plants (especially Arabidopsis thaliana) and a few crops, such as tomato, lettuce, and cucumber. Rice (Oryza sativa) is the most essential food crop for more than half of the world's population. However, the use of VOCs to improve this crop performance has not yet been investigated. Here, we evaluated the composition and effects of bacterial VOCs on the growth and metabolism of rice. First, we selected bacterial isolates (IAT P4F9 and E.1b) that increased rice dry shoot biomass by up to 83% in co-cultivation assays performed with different durations of time (7 and 12 days). Metabolic profiles of the plants co-cultivated with these isolates and controls (without bacteria and non-promoter bacteria-1003-S-C1) were investigated via 1H nuclear magnetic resonance. The analysis identified metabolites (e.g., amino acids, sugars, and others) with differential abundance between treatments that might play a role in metabolic pathways, such as protein synthesis, signaling, photosynthesis, energy metabolism, and nitrogen assimilation, involved in rice growth promotion. Interestingly, VOCs from IAT P4F9 displayed a more consistent promotion activity and were also able to increase rice dry shoot biomass in vivo. Molecular identification by sequencing the 16S rRNA gene of the isolates IAT P4F9 and E.1b showed a higher identity with Serratia and Achromobacter species, respectively. Lastly, volatilomes of these and two other non-promoter bacteria (1003-S-C1 and Escherichia coli DH5α) were evaluated through headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry. Compounds belonging to different chemical classes, such as benzenoids, ketones, alcohols, sulfide, alkanes, and pyrazines, were identified. One of these VOCs, nonan-2-one, was validated in vitro as a bioactive compound capable of promoting rice growth. Although further analyses are necessary to properly elucidate the molecular mechanisms, our results suggest that these two bacterial isolates are potential candidates as sources for bioproducts, contributing to a more sustainable agriculture.
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Affiliation(s)
- Octávio Augusto Costa Almeida
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
- Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Natália Oliveira de Araujo
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
- Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Aline Tieppo Nogueira Mulato
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
- Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Gabriela Felix Persinoti
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
| | - Maurício Luís Sforça
- Brazilian Biosciences National Laboratory, Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
| | | | - Juliana Velasco de Castro Oliveira
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
- Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
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Antifungal mechanisms of volatile organic compounds produced by Pseudomonas fluorescens ZX as biological fumigants against Botrytis cinerea. Microbiol Res 2023; 267:127253. [PMID: 36455309 DOI: 10.1016/j.micres.2022.127253] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 11/15/2022]
Abstract
To explore the antifungal mechanisms of volatile organic compounds (VOCs) produced by Pseudomonas fluorescens ZX against Botrytis cinerea, biochemical analyses and transcriptomic techniques were employed in this work. The results showed that P. fluorescens ZX-producing VOCs can increase the cell membrane permeability of B. cinerea and disrupt cell membrane integrity, resulting in leakage of the pathogen's cellular contents, inhibition of ergosterol biosynthesis (about 76%), and an increase in malondialdehyde (MDA) content. Additionally, for B. cinerea respiration, P. fluorescens ZX-producing VOCs (1 × 109 CFU /mL) significantly inhibited the activities of ATPase (55.7%), malate dehydrogenase (MDH) (33.1%), and succinate dehydrogenase (SDH) (57.9%), seriously interfering with energy metabolism and causing accumulation of reactive oxygen species (ROS). Furthermore, transcriptome analysis of B. cinerea following exposure to VOCs revealed 4590 differentially expressed genes (DEGs) (1388 upregulated, 3202 downregulated). Through GO analysis, these DEGs were determined to be enriched in intrinsic components of membrane, integral components of membrane, and membrane parts, while KEGG analysis indicated that they were enriched in many amino acid metabolism pathways. Significantly, the DEGs related to ergosterol biosynthesis, ATPase, mitochondrial respiratory chain, malate dehydrogenase, and cell membrane showed down-regulation, corroborating the biochemical analyses. Taken together, these results suggest that the antifungal activity of P. fluorescens ZX-producing VOCs against B. cinerea occurs primary mechanisms: causing significant damage to the cell membrane, negatively affecting respiration, and interfering with amino acid metabolism.
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10
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Almeida OAC, de Araujo NO, Dias BHS, de Sant’Anna Freitas C, Coerini LF, Ryu CM, de Castro Oliveira JV. The power of the smallest: The inhibitory activity of microbial volatile organic compounds against phytopathogens. Front Microbiol 2023; 13:951130. [PMID: 36687575 PMCID: PMC9845590 DOI: 10.3389/fmicb.2022.951130] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 09/20/2022] [Indexed: 01/06/2023] Open
Abstract
Plant diseases caused by phytopathogens result in huge economic losses in agriculture. In addition, the use of chemical products to control such diseases causes many problems to the environment and to human health. However, some bacteria and fungi have a mutualistic relationship with plants in nature, mainly exchanging nutrients and protection. Thus, exploring those beneficial microorganisms has been an interesting and promising alternative for mitigating the use of agrochemicals and, consequently, achieving a more sustainable agriculture. Microorganisms are able to produce and excrete several metabolites, but volatile organic compounds (VOCs) have huge biotechnology potential. Microbial VOCs are small molecules from different chemical classes, such as alkenes, alcohols, ketones, organic acids, terpenes, benzenoids and pyrazines. Interestingly, volatilomes are species-specific and also change according to microbial growth conditions. The interaction of VOCs with other organisms, such as plants, insects, and other bacteria and fungi, can cause a wide range of effects. In this review, we show that a large variety of plant pathogens are inhibited by microbial VOCs with a focus on the in vitro and in vivo inhibition of phytopathogens of greater scientific and economic importance in agriculture, such as Ralstonia solanacearum, Botrytis cinerea, Xanthomonas and Fusarium species. In this scenario, some genera of VOC-producing microorganisms stand out as antagonists, including Bacillus, Pseudomonas, Serratia and Streptomyces. We also highlight the known molecular and physiological mechanisms by which VOCs inhibit the growth of phytopathogens. Microbial VOCs can provoke many changes in these microorganisms, such as vacuolization, fungal hyphal rupture, loss of intracellular components, regulation of metabolism and pathogenicity genes, plus the expression of proteins important in the host response. Furthermore, we demonstrate that there are aspects to investigate by discussing questions that are still not very clear in this research area, especially those that are essential for the future use of such beneficial microorganisms as biocontrol products in field crops. Therefore, we bring to light the great biotechnological potential of VOCs to help make agriculture more sustainable.
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Affiliation(s)
- Octávio Augusto Costa Almeida
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil,Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Natália Oliveira de Araujo
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil,Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Bruno Henrique Silva Dias
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil,Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Carla de Sant’Anna Freitas
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil,Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Luciane Fender Coerini
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil,Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Choong-Min Ryu
- Molecular Phytobacteriology Laboratory, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon, South Korea,Biosystems and Bioengineering Program, University of Science and Technology, Daejeon, South Korea
| | - Juliana Velasco de Castro Oliveira
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil,Graduate Program in Genetics and Molecular Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil,*Correspondence: Juliana Velasco de Castro Oliveira,
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11
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Zhao X, Zhou J, Tian R, Liu Y. Microbial volatile organic compounds: Antifungal mechanisms, applications, and challenges. Front Microbiol 2022; 13:922450. [PMID: 35910607 PMCID: PMC9337857 DOI: 10.3389/fmicb.2022.922450] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 06/27/2022] [Indexed: 11/24/2022] Open
Abstract
The fungal decay of fresh fruits and vegetables annually generates substantial global economic losses. The utilization of conventional synthetic fungicides is damaging to the environment and human health. Recently, the biological control of post-harvest fruit and vegetable diseases via antagonistic microorganisms has become an attractive possible substitution for synthetic fungicides. Numerous studies have confirmed the potential of volatile organic compounds (VOCs) for post-harvest disease management. Moreover, VOC emission is a predominant antifungal mechanism of antagonistic microorganisms. As such, it is of great significance to discuss and explore the antifungal mechanisms of microbial VOCs for commercial application. This review summarizes the main sources of microbial VOCs in the post-harvest treatment and control of fruit and vegetable diseases. Recent advances in the elucidation of antifungal VOC mechanisms are emphasized, and the applications of VOCs produced from antagonistic microorganisms are described. Finally, the current prospects and challenges associated with microbial VOCs are considered.
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12
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Identification of Volatile Organic Compounds Produced by Xenorhabdus indica Strain AB and Investigation of Their Antifungal Activities. Appl Environ Microbiol 2022; 88:e0015522. [PMID: 35727028 DOI: 10.1128/aem.00155-22] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Xenorhabdus spp. are symbiotic bacteria associated with entomopathogenic nematodes to form a model complex that is used for the biological control of insect pests. These bacteria also produce secondary metabolites that have commercial potential in the pharmaceutical and agroforestry industries. Volatile organic compounds (VOCs) produced by the Xenorhabdus indica "strain AB" have been shown to have significant antifungal activity against Fusarium oxysporum f. sp. cucumerinum. Using gas chromatography-mass spectrometry, we identified 61 volatiles in the mixture of VOCs emitted by strain AB compared to a control strain, 6 of which were investigated for their antifungal activities. Of these, methyl anthranilate exhibited the highest mycelial growth suppression toward F. oxysporum, with a minimum inhibitory volume (MIV) of 50 μL/plate. Fluorescence assays, scanning electron microscopy, and measurements of the leakage of intracellular components revealed that the use of methyl anthranilate changed cell wall and cell membrane integrity as well as the permeability of the plasma membrane. Furthermore, methyl anthranilate treatment upregulated the transcription level of target genes related to redox reactions and the cell wall integrity pathway. The results suggest a novel mechanism used by Xenorhabdus spp. to overcome competitors during its life cycle and open up a new approach to using these bacteria in biological control. IMPORTANCE Fungal phytopathogens, particularly Fusarium oxysporum, are a major problem worldwide, especially in the postharvest of vital economic crops. Concerns about negative effects on the environment and human health have led to increasing restrictions on the use of chemical fungicides, and therefore, biological control agents are now being considered alternatives. It is in this context that we investigated the antifungal activity of VOCs produced by X. indica strain AB against F. oxysporum. We found that AB VOCs have a strong effect on the growth of the fungal phytopathogen. In addition, 85% of the identified volatile compounds were determined to be new compounds, opening up new lines of research to discover their properties, effects, and potential for pharmaceutical and agricultural applications. Antifungal assays proved that four of the six compounds with a high concentration in the GC-MS profile had a significant inhibitory effect on pathogen growth. Accordingly, this study opens up a new approach for the use of these bacteria in biocontrol.
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13
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Phytotoxic compounds from endophytic fungi. Appl Microbiol Biotechnol 2022; 106:931-950. [PMID: 35039926 DOI: 10.1007/s00253-022-11773-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/11/2022] [Accepted: 01/11/2022] [Indexed: 12/22/2022]
Abstract
Weeds represent one of the most challenging biotic factors for the agricultural sector, responsible for causing significant losses in important agricultural crops. Traditional herbicides have managed to keep weeds at bay, but overuse has resulted in negative environmental and toxicological impacts, including the increase of herbicide-resistant species. Within this context, the use of biologically derived (bio-)herbicides represents a promising solution because they are able to provide the desired phytotoxic effects while causing less toxic environmental damage. In recent years, bioactive secondary metabolites, in particular those bio-synthesized by endophytic fungi, have been shown to be promising sources of novel compounds that can be exploited in agriculture, including their use in weed control. Endophytic fungi have the ability to produce volatile and nonvolatile compounds with broad phytotoxic activity. In addition, as a result of the beneficial relationships they establish with their host plants, they are part of the colonization mechanism and can provide protection for their hosts. As such, endophytic fungi can be exploited as bioherbicides and as research tools. In this review, we cover 100 nonvolatile secondary metabolites with phytotoxic activity and more than 20 volatile organic compounds in a mixture, produced by 28 isolates of endophytic fungi from 21 host plant families, collected in 8 countries. This information can form the basis for the application of endophytic fungal compounds in weed control. KEY POINTS: • Endophytic fungi produce a wide variety of secondary metabolites with unique and complex structures. • Fungal endophytes produce volatile and nonvolatile compounds with promising phytotoxic activity. • Endophytic fungi are a promising source of useful bioherbicides.
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14
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Zhang H, Wei TP, Li LZ, Luo MY, Jia WY, Zeng Y, Jiang YL, Tao GC. Multigene Phylogeny, Diversity and Antimicrobial Potential of Endophytic Sordariomycetes From Rosa roxburghii. Front Microbiol 2021; 12:755919. [PMID: 34912312 PMCID: PMC8667620 DOI: 10.3389/fmicb.2021.755919] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 11/08/2021] [Indexed: 11/13/2022] Open
Abstract
Rosa roxburghii Tratt. is widely applied in food, cosmetics, and traditional medicine, and has been demonstrated to possess diverse bioactivities. Plant endophytic fungi are important microbial resources with great potential for application in many fields. They not only establish mutualistic symbiosis with host plants but also produce a variety of bioactive compounds. Therefore, in the present study, endophytic fungi were isolated from R. roxburghii, the diversity and antimicrobial activities were evaluated. As a result, 242 strains of endophytic Sordariomycetes were successfully isolated. Multigene phylogenetic analyses showed that these isolates included eight orders, 19 families, 33 genera. The dominant genera were Diaporthe (31.4%), Fusarium (14.4%), Chaetomium (7.9%), Dactylonectria (7.0%), Graphium (4.5%), Colletotrichum (4.1%), and Clonostachys (4.1%). For different tissues of R. roxburghii, alpha diversity analysis revealed that the diversity of fungal communities decreased in the order of root, fruit, stem, flower, leaf, and seed, and Clonostachys and Dactylonectria exhibited obvious tissue specificity. Meanwhile, functional annotation of 33 genera indicated that some fungi have multitrophic lifestyles combining endophytic, pathogenic, and saprophytic behavior. Additionally, antimicrobial activities of endophytic Sordariomycetes against Lasiodiplodia theobromae, Botryosphaeria dothidea, Colletotrichum capsici, Pyricularia oryzae, Rhizoctonia solani, Fusarium oxysporum, Pseudomonas syringae, Pantoea agglomerans, Staphylococcus aureus, Bacillus subtilis, Escherichia coli, and Pseudomonas aeruginosa were screened. Dual culture test assays showed that there were 40 different endophytic species with strong inhibition of at least one or moderate inhibition of two or more against the 12 tested strains. The results from the filter paper diffusion method suggested that extracellular metabolites may be more advantageous than intracellular metabolites in the development of antimicrobial agents. Eleven isolates with good activities were screened. In particular, Hypomontagnella monticulosa HGUP194009 and Nigrospora sphaerica HGUP191020 have shown promise in both broad-spectrum and intensity. Finally, some fungi that commonly cause disease have been observed to have beneficial biological activities as endophytic fungi. In conclusion, this study showed the species composition, alpha diversity, and lifestyle diversity of endophytic Sordariomycetes from R. roxburghii and demonstrated these isolates are potential sources for exploring antimicrobial agents.
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Affiliation(s)
- Hong Zhang
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang, China.,Guizhou Academy of Testing and Analysis, Guiyang, China
| | - Tian-Peng Wei
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang, China
| | - Lin-Zhu Li
- Guizhou Academy of Testing and Analysis, Guiyang, China
| | - Ming-Yan Luo
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang, China
| | - Wei-Yu Jia
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang, China
| | - Yan Zeng
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang, China
| | - Yu-Lan Jiang
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang, China
| | - Guang-Can Tao
- Guizhou Academy of Testing and Analysis, Guiyang, China.,Food Safety and Nutrition (Guizhou) Information Technology Co., Ltd., Guiyang National High-Tech Industrial Development Zone, Guiyang, China
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15
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Jin QY, Peng HZ, Zhu TJ, Ye HL. Isolation and functional characteristics of the fungus Hypoxylon spp. Sj18 with biocontrol potential. Fungal Biol 2021; 126:174-184. [DOI: 10.1016/j.funbio.2021.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 11/24/2021] [Accepted: 12/08/2021] [Indexed: 11/29/2022]
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16
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Falade AO, Adewole KE, Ekundayo TC. Aptitude of endophytic microbes for production of novel biocontrol agents and industrial enzymes towards agro-industrial sustainability. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2021. [DOI: 10.1186/s43088-021-00146-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Abstract
Background
Endophytes have continued to receive increased attention worldwide, probably, due to the enormous biotechnological potentials spanning through various industrial sectors. This paper outlines the biotechnological potentials of endophytes in biocontrol and industrial enzyme production, and the possible contribution towards achieving agro-industrial sustainability using published articles on endophytes in both Web of Science and Scopus (1990–2020).
Main body of the abstract
This review discusses the potential of endophytes to produce novel secondary metabolites with effective biocontrol activity against insect pests and plant pathogens. More so, the aptitude of endophytes for production of a wide range of enzymes with potential applications in agriculture, energy and health is discussed in this review. Furthermore, this review highlights the emerging potentials of endophytes in the production of exopolysaccharide and fatty acids. This paper also advocates the need for bioprospecting endophytes for novel biocontrol agents against termites, which are known for causing significant damage to forest and stored products.
Short conclusion
Exploration of endophytes for biocontrol and production of biomolecules of industrial significance could contribute significantly towards agricultural and industrial sustainability.
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Khruengsai S, Pripdeevech P, Tanapichatsakul C, Srisuwannapa C, D'Souza PE, Panuwet P. Antifungal properties of volatile organic compounds produced by Daldinia eschscholtzii MFLUCC 19-0493 isolated from Barleria prionitis leaves against Colletotrichum acutatum and its post-harvest infections on strawberry fruits. PeerJ 2021; 9:e11242. [PMID: 33959421 PMCID: PMC8054736 DOI: 10.7717/peerj.11242] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 03/17/2021] [Indexed: 01/23/2023] Open
Abstract
Fungal endophytes are microorganisms living symbiotically with a host plant. They can produce volatile organic compounds (VOCs) that have antimicrobial activity. This study aimed to isolate endophytic fungi from Barleria prionitis plants grown in Thailand and to investigate the antifungal properties of their VOCs against Colletotrichum acutatum, a causal agent of anthracnose disease on post-harvest strawberry fruits. A total of 34 endophytic fungi were isolated from leaves of B. prionitis. The VOCs produced from each individual isolate were screened for their antifungal activity against C. acutatum using a dual-culture plate method. From this in vitro screening experiment, the VOCs produced by the endophytic isolate BP11 were found to have the highest inhibition percentage (80.3%) against the mycelial growth of C. acutatum. The endophytic isolate BP11 was molecularly identified as Daldinia eschscholtzii MFLUCC 19-0493. This strain was then selected for an in vivo experiment. Results from the in vivo experiment indicated that the VOCs produced by D. eschscholtzii MFLUCC 19-0493 were able to inhibit infections by C. acutatum on organic fresh strawberry fruits with an average inhibition percentage of 72.4%. The quality of the pathogen-inoculated strawberry fruits treated with VOCs produced by D. eschscholtzii MFLUCC 19-0493 was evaluated. Their fruit firmness, total soluble solids, and pH were found to be similar to the untreated strawberry fruits. Solid phase microextraction-gas chromatographic-mass spectrometric analysis of the VOCs produced by D. eschscholtzii MFLUCC 19-0493 led to the detection and identification of 60 compounds. The major compounds were elemicin (23.8%), benzaldehyde dimethyl acetal (8.5%), ethyl sorbate (6.8%), methyl geranate (6.5%), trans-sabinene hydrate (5.4%), and 3,5-dimethyl-4-heptanone (5.1%). Each major compound was tested for its antifungal activity against C. acutatum using the in vitro assay. While all these selected VOCs showed varying degrees of antifungal activity, elemicin was found to possess the strongest antifungal activity. This work suggests that D. eschscholtzii MFLUCC 19-0493 could be a promising natural preservative for controlling C. acutatum associated anthracnose disease in strawberry fruits during the post-harvest period.
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Affiliation(s)
| | - Patcharee Pripdeevech
- School of Science, Mae Fah Luang University, Muang, Chiang Rai, Thailand.,Center of Chemical Innovation for Sustainability (CIS), Mae Fah Luang University, Muang, Chiang Rai, Thailand
| | | | | | - Priya Esilda D'Souza
- Laboratory of Exposure Assessment and Development for Environmental Research, Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Parinya Panuwet
- Laboratory of Exposure Assessment and Development for Environmental Research, Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
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18
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Huang X, Ren J, Li P, Feng S, Dong P, Ren M. Potential of microbial endophytes to enhance the resistance to postharvest diseases of fruit and vegetables. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:1744-1757. [PMID: 32974893 DOI: 10.1002/jsfa.10829] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/17/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
Food loss of fruit and vegetables caused by postharvest diseases is a major issue worldwide. The method used to prevent and control postharvest diseases is usually to use chemical fungicides, but long-term and large-scale use will make the pathogens resistant and potentially have a negative impact on human health and the ecological environment. Therefore, finding a safe and effective biological control method instead of chemical control is a hot research topic in recent years. Endophytes, colonizing plants asymptomatically, can promote the growth of the hosts and enhance their resistance. The use of endophytes as biological control agents for postharvest diseases of fruit and vegetables has attracted increasing attention in the last 20 years. Compared with chemical control, endophytes have the advantages of being more environmentally friendly, sustainable, and safer. However, there are relatively few relevant studies, so herein we summarize the available literature. This review focuses mainly on the recent progress of using endophytes to enhance the resistance of postharvest fruit and vegetables to diseases, with the emphasis on the possible mechanisms and the potential applications. Furthermore, this article suggests future areas for study using antagonistic endophytes to prevent and control fruit and vegetable postharvest diseases: (i) screening more potential broad-spectrum anti-pathogen endophytes and their metabolic active substances by the method of macrogenomics; (ii) elucidating the underlining molecular mechanism among endophytes, harvested vegetables and fruit, pathogens, and microbial communities; (iii) needing more application research to overcome the difficulties of commercialization practice. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Xiaoqing Huang
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Jie Ren
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Peihua Li
- College of Agronomy, Xichang University, Xichang, China
| | - Shun Feng
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Pan Dong
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Maozhi Ren
- School of Life Sciences, Chongqing University, Chongqing, China
- Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
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Lutfia A, Munir E, Yurnaliza Y, Basyuni M. Chemical analysis and anticancer activity of sesterterpenoid from an endophytic fungus Hypomontagnella monticulosa Zg15SU and its host Zingiber griffithii Baker. Heliyon 2021; 7:e06292. [PMID: 33665446 PMCID: PMC7900702 DOI: 10.1016/j.heliyon.2021.e06292] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/22/2020] [Accepted: 02/11/2021] [Indexed: 11/26/2022] Open
Abstract
Zingiber griffithii Baker is one of the native Zingiberaceous species in a tropical forest of North Sumatra, Indonesia. Zingiberaceous species have been intensively studied and reported as herbal ingredients in ethnomedicine and currently their endophytic fungal associates were studied for pharmacological importance. Fifteen endophytic fungi were isolated from Zingiber griffithii following morphological and molecular characterization. All isolates exhibited antibacterial properties to at least one of the tested pathogenic bacteria Staphylococcus aureus, Escherichia coli, Methicilin-resistant S. aureus (MRSA), and Enteropathogenic E. coli (EPEC). The isolate, identified as Hypomontagnella monticulosa strain Zg15SU (syn. Hypoxylon monticulosum Mont.) based on its rDNA/ITS sequence, displayed antibacterial activities to all tested pathogens. The EtOAc extract of the H. monticulosum Zg15SU showed the highest activity for gram-negative bacteria, the E. coli and EPEC, while the extract of Z. griffithii rhizome displayed activity only for E. coli. The gas chromatography-mass spectrometry analysis (GC-MS) indicated a major portion of similar compounds found in both the endophytic fungus and plant extract, revealing the compounds of oleic acid, cyclononasiloxane, octadecamethyl, and eicosanoic acid Furthermore, purification and structural elucidation on the EtOAc extract of both Z. griffithii rhizome and H. monticulosa Zg15SU yielded two bioactive compounds: a novel compound, griffithiiene, a terpenoid-alkaloid bearing the skeleton of a scalarane (1) and scalaradial (2) which were confirmed by 1H- (500 MHz) and 13C-NMR (125 MHz) spectroscopy. Importantly, the elucidated compounds showed a cytotoxicity activity against cancer cell lines, the Panc-1, NBT-T2, and HCT116 based on in vitro MTT proliferation assay. This is the first report of Z. griffithii harboring an endophytic fungus, H. monticulosa, which produced potential antibacterial and anticancer metabolites along with its host to be utilized for future prospects.
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Affiliation(s)
- Anisa Lutfia
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, Indonesia
| | - Erman Munir
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, Indonesia
| | - Yurnaliza Yurnaliza
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, Indonesia
| | - Mohammad Basyuni
- Department of Forestry, Faculty of Forestry, Universitas Sumatera Utara, Medan, 20155, Indonesia
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20
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Sánchez-Fernández RE, Sánchez-Fuentes R, Rangel-Sánchez H, Hernández-Ortega S, López-Cortés JG, Macías-Rubalcava ML. Antifungal and antioomycete activities and modes of action of isobenzofuranones isolated from the endophytic fungus Hypoxylon anthochroum strain Gseg1. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 169:104670. [PMID: 32828376 DOI: 10.1016/j.pestbp.2020.104670] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
Hypoxylon species are distributed worldwide and have been isolated from different habitats. The endophyte Hypoxylon anthochroum strain Gseg1 was isolated from healthy leaves of Gliricidia sepium. A chemical study of the culture medium and mycelium organic extracts of the endophytic fungus H. anthochroum Gseg1 led to the isolation of three known isobenzofuranones, 7-hydroxy-4,6-dimethyl-3H-isobenzofuran-1-one, 1, 7-methoxy-4,6-dimethyl-3H-isobenzofuran-1-one, 2, 6-formyl-4-methyl-7-methoxy-3H-isobenzofuran-1-one, 3, and one compound was isolated for the first time as a natural product, 7-methoxy-4-methyl-3H-isobenzofuran-1-one, 4. In addition, the chemical synthesis of 1 and 2, and a derivative, 7-methoxy-6-methyl-3H-isobenzofuran-1-one, 5, was performed. The isobenzofuranones showed antifungal and antioomycete activities. Compounds 1-5 inhibited the growth of Fusarium oxysporum, Alternaria alternata, Pythium aphanidermatum, and Phytophthora capsici, in addition, 1, 2 and 5 interrupted the respiration and caused electrolyte leakage due to cell membrane damage. Compound 2 was the most active, inhibiting the growth of the four microorganisms, affecting the respiration and increasing the relative conductivity due to electrolyte leakage. Compounds 1-4 also induce morphological changes in the plant pathogens' mycelia and hyphae. These compounds could be useful for the control of plant pathogenic fungi and oomycetes of agricultural relevance.
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Affiliation(s)
- Rosa Elvira Sánchez-Fernández
- Departamento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Delegación Coyoacán, Ciudad de Mexico 04510, Mexico
| | - Rosalía Sánchez-Fuentes
- Departamento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Delegación Coyoacán, Ciudad de Mexico 04510, Mexico
| | - Hiram Rangel-Sánchez
- Departamento de Química Inorgánica, Instituto de Química, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Delegación Coyoacán, Ciudad de Mexico 04510, Mexico
| | - Simón Hernández-Ortega
- Laboratorio de Rayos X, Instituto de Química, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Delegación Coyoacán, Ciudad de Mexico 04510, Mexico
| | - José G López-Cortés
- Departamento de Química Inorgánica, Instituto de Química, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Delegación Coyoacán, Ciudad de Mexico 04510, Mexico
| | - Martha Lydia Macías-Rubalcava
- Departamento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Delegación Coyoacán, Ciudad de Mexico 04510, Mexico.
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21
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Differential relationship of fungal endophytic communities and metabolic profiling in the stems and roots of Ephedra sinica based on metagenomics and metabolomics. Symbiosis 2020. [DOI: 10.1007/s13199-020-00685-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Mortierella elongata Increases Plant Biomass among Non-Leguminous Crop Species. AGRONOMY-BASEL 2020. [DOI: 10.3390/agronomy10050754] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Recent studies have shown that M. elongata (M. elongata) isolated from Populus field sites has a dual endophyte–saprotroph lifestyle and is able to promote the growth of Populus. However, little is known about the host fidelity of M. elongata and whether M. elongata strains differ from one another in their ability to promote plant growth. Here, we compared the impacts of three Populus-associated M. elongata isolates (PMI 77, PMI 93, and PMI 624) on the growth of seven different crop species by measuring plant height, plant dry biomass, and leaf area. M. elongata isolates PMI 624 and PMI 93 increased the plant height, leaf area, and plant dry weight of Citrullus lanatus, Zea mays, Solanum lycopersicum, and Cucurbita to a much greater degree than PMI 77 (33.9% to 14.1%). No significant impacts were observed for any isolate on the growth of Abelmoschus esculentus or Glycine max. On the contrary, Glycine max significantly decreased in height by 30.6% after the inoculation of M. elongata PMI 77. In conclusion, this study demonstrates that M. elongata generally promoted metrics of the plant performance among a diverse set of importantly non-leguminous crop species. Future research on understanding the molecular mechanisms that underlie strain and host variability is warranted.
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23
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Ye X, Chen Y, Ma S, Yuan T, Wu Y, Li Y, Zhao Y, Chen S, Zhang Y, Li L, Li Z, Huang Y, Cao H, Cui Z. Biocidal effects of volatile organic compounds produced by the myxobacterium Corrallococcus sp. EGB against fungal phytopathogens. Food Microbiol 2020; 91:103502. [PMID: 32539966 DOI: 10.1016/j.fm.2020.103502] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 01/06/2020] [Accepted: 04/01/2020] [Indexed: 10/24/2022]
Abstract
Myxobacteria have excellent biocontrol activity against various phytopathogens due to their rich spectrum of secondary metabolites and active predatory characteristics. In this study, the mycelial growth of Fusarium oxysporum f. sp. cucumerinum (FOC) was found to be significantly inhibited by volatile compounds (VOCs) produced by Corallococcus sp. EGB. A total of 32 compounds were identified among the VOCs produced by strain EGB, of which isooctanol exhibited the highest antifungal activity, with dosages of 3.75 and 4.0 μL/plate being sufficient to suppress FOC and Penicillum digitatum, respectively. Isooctanol was found to damage the cell wall and cell membranes of FOC and P. digitatum. Apoptosis-like cell death of FOC and P. digitatum induced by isooctanol was observed subsequently due to the accumulation of reactive oxygen species (ROS). The transcription level of genes related to cell wall integrity (CWI) pathway and redox reactions were significantly upregulated by 15- to 40-fold, indicating the stress caused by isooctanol. Postharvest storage experiments showed that the disease severity of post-harvest oranges infected with P. digitatum could be significantly reduced by isooctanol at 114.2 μL/L.
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Affiliation(s)
- Xianfeng Ye
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Yang Chen
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Shiyun Ma
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Tian Yuan
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Yaxuan Wu
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Yingxuan Li
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuqiang Zhao
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Shuying Chen
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Yiwen Zhang
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Liuyan Li
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhoukun Li
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Yan Huang
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China
| | - Hui Cao
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China.
| | - Zhongli Cui
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, College of Life Science of Nanjing Agricultural University, Nanjing, 210095, China.
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24
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Stimulation of secondary metabolite production in Hypoxylon anthochroum by naturally occurring epigenetic modifiers. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2020. [DOI: 10.1007/s11694-019-00345-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Huang PW, Yang Q, Zhu YL, Zhou J, Sun K, Mei YZ, Dai CC. The construction of CRISPR-Cas9 system for endophytic Phomopsis liquidambaris and its PmkkA-deficient mutant revealing the effect on rice. Fungal Genet Biol 2020; 136:103301. [DOI: 10.1016/j.fgb.2019.103301] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 08/31/2019] [Accepted: 11/12/2019] [Indexed: 02/06/2023]
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26
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Guo H, Qin X, Wu Y, Yu W, Liu J, Xi Y, Dou G, Wang L, Xiao H. Biocontrol of Gray Mold of Cherry Tomatoes with the Volatile Organic Monomer from Hanseniaspora uvarum, Trans-Cinnamaldehyde. FOOD BIOPROCESS TECH 2019. [DOI: 10.1007/s11947-019-02319-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Strategies for gene disruption and expression in filamentous fungi. Appl Microbiol Biotechnol 2019; 103:6041-6059. [DOI: 10.1007/s00253-019-09953-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/24/2019] [Accepted: 05/28/2019] [Indexed: 02/02/2023]
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28
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Kou X, Chen G, Huang S, Ye Y, Ouyang G, Gan J, Zhu F. In Vivo Sampling: A Promising Technique for Detecting and Profiling Endogenous Substances in Living Systems. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:2120-2126. [PMID: 30724065 DOI: 10.1021/acs.jafc.8b06981] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Endogenous substances, naturally occurring in living organisms, are critical components with physiological and biological functions. Discovery and quantitative measurement of endogenous substances in living biotas are important for food analysis, crop cultivation, and quality assessment. Low or non-invasive in vivo sampling techniques offer the advantages of minimal perturbation to the investigated system and potentially obtain more accurate feedback compared to in vitro sampling. In this perspective, we summarize the up-to-date progress in the development of microdialysis and solid-phase microextraction as valuable tools for in vivo sampling of endogenous substances in food and agriculture chemistry. We discuss their feasibility for on-site and real-time in vivo monitoring and highlight the prospects in searching for highly specific coatings, miniaturized sampling devices, and instruments that well meet the trend for high-efficient and high-throughput analyses.
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Affiliation(s)
- Xiaoxue Kou
- School of Chemistry , Sun Yat-sen University , Guangzhou , Guangdong 510275 , People's Republic of China
| | - Guosheng Chen
- School of Chemistry , Sun Yat-sen University , Guangzhou , Guangdong 510275 , People's Republic of China
| | - Siming Huang
- Department of Radiology, Sun Yat-sen Memorial Hospital , Sun Yat-sen University , Guangzhou , Guangdong 510120 , People's Republic of China
| | - Yuxin Ye
- School of Chemistry , Sun Yat-sen University , Guangzhou , Guangdong 510275 , People's Republic of China
| | - Gangfeng Ouyang
- School of Chemistry , Sun Yat-sen University , Guangzhou , Guangdong 510275 , People's Republic of China
| | - Jay Gan
- Department of Environmental Sciences , University of California, Riverside , Riverside , California 92521 , United States
| | - Fang Zhu
- School of Chemistry , Sun Yat-sen University , Guangzhou , Guangdong 510275 , People's Republic of China
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29
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Sharifi R, Ryu CM. Biogenic Volatile Compounds for Plant Disease Diagnosis and Health Improvement. THE PLANT PATHOLOGY JOURNAL 2018; 34:459-469. [PMID: 30588219 PMCID: PMC6305170 DOI: 10.5423/ppj.rw.06.2018.0118] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 08/26/2018] [Accepted: 09/12/2018] [Indexed: 05/20/2023]
Abstract
Plants and microorganisms (microbes) use information from chemicals such as volatile compounds to understand their environments. Proficiency in sensing and responding to these infochemicals increases an organism's ecological competence and ability to survive in competitive environments, particularly with regard to plant-pathogen interactions. Plants and microbes acquired the ability to sense and respond to biogenic volatiles during their evolutionary history. However, these signals can only be interpreted by humans through the use of state-of the-art technologies. Newly-developed tools allow microbe-induced plant volatiles to be detected in a rapid, precise, and non-invasive manner to diagnose plant diseases. Beside disease diagnosis, volatile compounds may also be valuable in improving crop productivity in sustainable agriculture. Bacterial volatile compounds (BVCs) have potential for use as a novel plant growth stimulant or as improver of fertilizer efficiency. BVCs can also elicit plant innate immunity against insect pests and microbial pathogens. Research is needed to expand our knowledge of BVCs and to produce BVC-based formulations that can be used practically in the field. Formulation possibilities include encapsulation and sol-gel matrices, which can be used in attract and kill formulations, chemigation, and seed priming. Exploitation of biogenic volatiles will facilitate the development of smart integrated plant management systems for disease control and productivity improvement.
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Affiliation(s)
- Rouhallah Sharifi
- Department of Plant Protection, College of Agriculture and Natural Resources, Razi University, Kermanshah,
Iran
| | - Choong-Min Ryu
- Molecular Phytobacteriology Laboratory, Infectious Disease Research Center, KRIBB, Daejeon 34141,
Korea
- Biosystem and Bioengineering Program, University of Science and Technology (UST), Daejeon 34141,
Korea
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