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Lahmamsi H, Ananou S, Lahlali R, Tahiri A. Lactic acid bacteria as an eco-friendly approach in plant production: Current state and prospects. Folia Microbiol (Praha) 2024; 69:465-489. [PMID: 38393576 DOI: 10.1007/s12223-024-01146-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 01/31/2024] [Indexed: 02/25/2024]
Abstract
Since the late nineteenth century, the agricultural sector has experienced a tremendous increase in chemical use in response to the growing population. Consequently, the intensive and indiscriminate use of these substances caused serious damage on several levels, including threatening human health, disrupting soil microbiota, affecting wildlife ecosystems, and causing groundwater pollution. As a solution, the application of microbial-based products presents an interesting and ecological restoration tool. The use of Plant Growth-Promoting Microbes (PGPM) affected positive production, by increasing its efficiency, reducing production costs, environmental pollution, and chemical use. Among these microbial communities, lactic acid bacteria (LAB) are considered an interesting candidate to be formulated and applied as effective microbes. Indeed, these bacteria are approved by the European Food Safety Authority (EFSA) and Food and Drug Administration (FDA) as Qualified Presumption of Safety statute and Generally Recognized as Safe for various applications. To do so, this review comes as a road map for future research, which addresses the different steps included in LAB formulation as biocontrol, bioremediation, or plant growth promoting agents from the isolation process to their field application passing by the different identification methods and their various uses. The plant application methods as well as challenges limiting their use in agriculture are also discussed.
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Affiliation(s)
- Haitam Lahmamsi
- Laboratoire de Biotechnologie Microbienne et Molécules Bioactives, Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, Route Immouzer BP 2202, Fez, Morocco
- Unité de Phytopathologie, Département de Protection des Plantes, Ecole Nationale d'Agriculture, Km10, Rt Haj Kaddour, BP S/40, 50001, Meknes, Morocco
| | - Samir Ananou
- Laboratoire de Biotechnologie Microbienne et Molécules Bioactives, Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, Route Immouzer BP 2202, Fez, Morocco
| | - Rachid Lahlali
- Unité de Phytopathologie, Département de Protection des Plantes, Ecole Nationale d'Agriculture, Km10, Rt Haj Kaddour, BP S/40, 50001, Meknes, Morocco.
| | - Abdessalem Tahiri
- Unité de Phytopathologie, Département de Protection des Plantes, Ecole Nationale d'Agriculture, Km10, Rt Haj Kaddour, BP S/40, 50001, Meknes, Morocco.
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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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Wang W, Long Y. A review of biocontrol agents in controlling late blight of potatoes and tomatoes caused by Phytophthora infestans and the underlying mechanisms. PEST MANAGEMENT SCIENCE 2023; 79:4715-4725. [PMID: 37555293 DOI: 10.1002/ps.7706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 07/25/2023] [Accepted: 08/09/2023] [Indexed: 08/10/2023]
Abstract
Phytophthora infestans causes late blight on potatoes and tomatoes, which has a significant economic impact on agriculture. The management of late blight has been largely dependent on the application of synthetic fungicides, which is not an ultimate solution for sustainable agriculture and environmental safety. Biocontrol strategies are expected to be alternative methods to the conventional chemicals in controlling plant diseases in the integrated pest management (IPM) programs. Well-studied biocontrol agents against Phytophthora infestans include fungi, oomycetes, bacteria, and compounds produced by these antagonists, in addition to certain bioactive metabolites produced by plants. Laboratory and glasshouse experiments suggest a potential for using biocontrol in practical late blight disease management. However, the transition of biocontrol to field applications is problematic for the moment, due to low and variable efficacies. In this review, we provide a comprehensive summary on these biocontrol strategies and the underlying corresponding mechanisms. To give a more intuitive understanding of the promising biocontrol agents against Phytophthora infestans in agricultural systems, we discuss the utilizations, modes of action and future potentials of these antagonists based on their taxonomic classifications. To achieve a goal of best possible results produced by biocontrol agents, it is suggested to work on field trials, strain modifications, formulations, regulations, and optimizations of application. Combined biocontrol agents having different modes of action or biological adaptation traits may be used to strengthen the biocontrol efficacy. More importantly, biological control agents should be applied in the coordination of other existing and forthcoming methods in the IPM programs. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Weizhen Wang
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang, China
| | - Youhua Long
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang, China
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Zhang J, Huang X, Hou Y, Xia X, Zhu Z, Huang A, Feng S, Li P, Shi L, Dong P. Isolation and Screening of Antagonistic Endophytes against Phytophthora infestans and Preliminary Exploration on Anti-oomycete Mechanism of Bacillus velezensis 6-5. PLANTS (BASEL, SWITZERLAND) 2023; 12:909. [PMID: 36840257 PMCID: PMC9962363 DOI: 10.3390/plants12040909] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
Phytophthora infestans, the notorious pathogen of potato late blight, leads to a severe decline in potato yields and even harvest failure. We isolated 201 endophytic isolates from healthy root tissues of potatoes, among which 41 showed strong antagonistic activity against P. infestans. Further, the tolerance to stress and the potential application against potato late blight of these antagonistic isolates were tested. Most of them were extremely tolerant to stresses such as acid-alkali, temperature, UV, salt, and heavy metal stress. However, some antagonistic isolates with excellent stress tolerance might be pathogenic to potatoes. Combining the screening results, a total of 14 endophytes had excellent comprehensive performance in all the tests. In this paper, the endophyte 6-5 was selected among them for the preliminary exploration of the anti-oomycete mechanism. Analysis of the 16S rDNA sequence revealed that 6-5 had a high homology to the corresponding sequence of Bacillus velezensis (99.72%) from the NCBI database. Endophyte 6-5 significantly inhibited the mycelial growth of P. infestans, with an inhibition rate of over 90% in vitro assays, and deformed the hyphal phenotype of P. infestans. In addition, endophyte 6-5 could secrete protease and cellulase, and produce antagonistic substances with high thermal stability, which might be helpful to its antagonistic activity against P. infestans. Furthermore, it was demonstrated that 6-5 had the ability to improve the resistance of potato tubers to late blight. In short, our study described the process of isolating and screening endophytes with antagonistic activity against P. infestans from potato roots, and further explored the potential of biocontrol candidate strain 6-5 in potato late blight control.
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Affiliation(s)
- Jiaomei Zhang
- School of Life Sciences, Chongqing University, Chongqing 401331, China
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Chongqing 400716, China
| | - Xiaoqing Huang
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Yuqin Hou
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Xiangning Xia
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Zhiming Zhu
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Airong Huang
- School of Life Sciences, Chongqing University, Chongqing 401331, China
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Chongqing 400716, China
| | - Shun Feng
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Peihua Li
- College of Agronomy, Xichang University, Xichang 615013, China
| | - Lei Shi
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Pan Dong
- School of Life Sciences, Chongqing University, Chongqing 401331, China
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Chongqing 400716, China
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Khan S, Bibi G, Dilbar S, Iqbal A, Ahmad M, Ali A, Ullah Z, Jaremko M, Iqbal J, Ali M, Haq I, Ali I. Biosynthesis and characterization of iron oxide nanoparticles from Mentha spicata and screening its combating potential against Phytophthora infestans. FRONTIERS IN PLANT SCIENCE 2022; 13:1001499. [PMID: 36226302 PMCID: PMC9548704 DOI: 10.3389/fpls.2022.1001499] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 08/09/2022] [Indexed: 05/19/2023]
Abstract
Plant pathogens cause serious diseases to agricultural crops which lead to food insecurity in the world. To combat plant pathogens, various strategies have been developed including the use of agrochemicals. The overuse of these chemicals is now leading to the pesticide-resistant capability of pathogens. To overcome this problem, modern nanobiotechnology offers the production of alternative nano drugs. In this study, we used Mentha spicata for the synthesis of iron oxide nanoparticles using the green synthesis method. The synthesis of Fe2O3 NPs was confirmed through various characterizations. UV-Vis analysis detected a characteristic absorbance at the spectral range of 272 nm. The SEM micrographic analysis at various magnifications displayed circular or rod-shaped nanoparticles with a size ranging from 21 to 82 nm. The elemental EDX characterization showed intense peaks with a weight percent of 57, 34.93, and 8.07 for Fe, O, and, Cl respectively. TGA analysis showed that weight loss at 44-182, 500, and 660°C with no further modification indicates the thermal stability of iron oxide nanoparticles. FTIR spectrum of uncalined detects various bands at 3331, 1625, and 1,437 cm-1 for the hydroxyl group. After calcination two bands at 527 and 434 cm-1 were observed for Fe-O. The antimicrobial in vitro study showed maximum growth inhibition of Phytophthora infestans by the concentration of 100 μg ml-1 of Fe2O3-PE and Fe2O3 NPs. Therefore, this study resulted that bio-stable iron oxide nanoparticles can be used as alternative antimicrobial agents.
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Affiliation(s)
- Sidra Khan
- Centre for Plant Sciences and Biodiversity, University of Swat, Charbagh, Khyber Pakhtunkhwa, Pakistan
| | - Gulfam Bibi
- Centre for Plant Sciences and Biodiversity, University of Swat, Charbagh, Khyber Pakhtunkhwa, Pakistan
| | - Shazia Dilbar
- Centre for Plant Sciences and Biodiversity, University of Swat, Charbagh, Khyber Pakhtunkhwa, Pakistan
| | - Aneela Iqbal
- Centre for Plant Sciences and Biodiversity, University of Swat, Charbagh, Khyber Pakhtunkhwa, Pakistan
| | - Maaz Ahmad
- Centre for Plant Sciences and Biodiversity, University of Swat, Charbagh, Khyber Pakhtunkhwa, Pakistan
| | - Ahmad Ali
- Centre for Plant Sciences and Biodiversity, University of Swat, Charbagh, Khyber Pakhtunkhwa, Pakistan
| | - Zahid Ullah
- Centre for Plant Sciences and Biodiversity, University of Swat, Charbagh, Khyber Pakhtunkhwa, Pakistan
| | - Mariusz Jaremko
- Smart-Health Initiative (SHI) and Red Sea Research Center (RSRC), Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Javed Iqbal
- Department of Botany, Bacha Khan University, Charsadda, Khyber Pakhtunkhwa, Pakistan
| | - Mohammad Ali
- Centre for Biotechnology and Microbiology, University of Swat, Charbagh, Khyber Pakhtunkhwa, Pakistan
| | - Ihtishamul Haq
- Centre for Plant Sciences and Biodiversity, University of Swat, Charbagh, Khyber Pakhtunkhwa, Pakistan
| | - Iftikhar Ali
- Centre for Plant Sciences and Biodiversity, University of Swat, Charbagh, Khyber Pakhtunkhwa, Pakistan
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
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Feng S, Dong P, Jin L, Li Z. Complete Genome Sequence Data of a Newly Isolated Streptomyces violascens Strain A10, a Potential Biological Control Agent for Fungal and Oomycete Diseases. PLANT DISEASE 2022; 106:2498-2501. [PMID: 35895328 DOI: 10.1094/pdis-11-21-2561-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- Shun Feng
- School of Horticulture, Hainan University, Haikou 570228, China
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Pan Dong
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Liang Jin
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Zhengguo Li
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China
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Han P, Liu T, Zheng Y, Song R, Nan T, Yang X, Huang L, Yuan Y. A Mycorrhizal Bacteria Strain Isolated From Polyporus umbellatus Exhibits Broad-Spectrum Antifungal Activity. FRONTIERS IN PLANT SCIENCE 2022; 13:954160. [PMID: 35923885 PMCID: PMC9340266 DOI: 10.3389/fpls.2022.954160] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
The microbes in the rhizosphere (or mycorrhizosphere) could promote plant growth, however, it is unclear whether mycorrhizosphere microbes could fight multiple fungal pathogens. In this study, twenty-one bacterial strains distributed in 6 genera, including 5 Pseudomonas strains, were isolated from mycorrhizal samples of Polyporus umbellatus that rely on other fungi during their life cycles. Further screening and pot experiments showed that the Pseudomonas strain ZL8 not only inhibited the growth of phytopathogenic fungi, but also promoted the growth of Salvia miltiorrhiza through inhibiting its wilting. In addition, strain ZL8 was found to have the ability to dissolve phosphate, produce IAA and siderophore. Nineteen compounds were identified from the fermentation broth of strain ZL8, of which 2,4-diacetylphloroglucinol (DAPG) had a significant inhibitory effect on phytopathogenic fungi with a minimum inhibitory concentration of 3.12-25 μg/mL. Molecular docking predicted that DAPG could bind to myosin I at two unique sites, which may be responsible to the inhibition of fungal growth. The evaluation results showed that strain ZL8 can be used to develop a dual-purpose biocontrol agents and biofertilizer. These results also provide new insights into the discovery and utilization of new resources for biocontrol agents and biolfertilizers.
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Affiliation(s)
- Pengjie Han
- School of Pharmaceutical Sciences, Peking University, Beijing, China
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Tianrui Liu
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuan Zheng
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ruiqi Song
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Tiegui Nan
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaolong Yang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Luqi Huang
- School of Pharmaceutical Sciences, Peking University, Beijing, China
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuan Yuan
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
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Feng S, Jin L, Tang S, Jian Y, Li Z. Combination of rhizosphere bacteria isolated from resistant potato plants for biocontrol of potato late blight. PEST MANAGEMENT SCIENCE 2022; 78:166-176. [PMID: 34467614 DOI: 10.1002/ps.6618] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Potato late blight (PLB) caused by Phytophthora infestans is one of the most devastating plant diseases. The heavy use of chemical control agents is at odds with the development of sustainable and environmentally friendly agriculture practices. It is necessary to screen the antagonistic microorganisms of P. infestans and provide a new choice of PLB biocontrol. RESULTS In vitro, eight bacterial strains (A, B, C, D, E, F, G, H) isolated from the rhizosphere of resistant potato plants had a significant inhibitory effect on the mycelium growth of P. infestans, and the inhibition rate was 35.02-79.20%. These isolates were assigned to Streptomyces, Pseudomonas, Saccharothrix and Nocardiopsis by phylogenetic analysis of 16S rRNA genes. Their physiological and biochemical characteristics suggested that they can produce cellulase and catalase, which may help to inhibit the infection of P. infestans. In vivo, each strain significantly inhibited the infection of P. infestans after individual inoculation into potato tubers, and no strains posed a pathogenic threat to tubers. In the field environment, multibacterial treatment significantly reduced the disease index. Compared with the control, multibacterial and single H treatment significantly increased the microbial species and abundance of the potato rhizosphere and enriched potential beneficial bacteria such as Rhizobiaceae. Meanwhile, multi-bacterial and single H treatment significantly reduced the abundance of Enterobacteriaceae and Bacillaceae. CONCLUSION Our results provide some valuable native strains from the potato rhizosphere with the ability to inhibit P. infestans in vivo and in vitro, which may be a new option for PLB biocontrol. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Shun Feng
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Liang Jin
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Shicai Tang
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Yongfei Jian
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Zhengguo Li
- School of Life Sciences, Chongqing University, Chongqing, China
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Irreplaceable Role of Amendment-Based Strategies to Enhance Soil Health and Disease Suppression in Potato Production. Microorganisms 2021; 9:microorganisms9081660. [PMID: 34442738 PMCID: PMC8400219 DOI: 10.3390/microorganisms9081660] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/26/2021] [Accepted: 07/28/2021] [Indexed: 11/22/2022] Open
Abstract
Soilborne diseases are a major constraining factor to soil health and plant health in potato production. In the toolbox of crop management, soil amendments have shown benefits to control these diseases and improve soil quality. Most amendments provide nutrients to plants and suppress multiple soilborne pathogens. Soil amendments are naturally derived materials and products and can be classified into fresh or living plants, organic or inorganic matters, and microbial supplements. Fresh plants have unique functions and continuously exude chemicals to interact with soil microbes. Organic and inorganic matter contain high levels of nutrients, including nitrogen and carbon that plants and soil microorganisms need. Soil microorganisms, whether being artificially added or indigenously existing, are a key factor in plant health. Microbial communities can be considered as a biological reactor in an ecosystem, which suppress soilborne pathogens in various mechanisms and turn soil organic matter into absorbable forms for plants, regardless of amendment types. Therefore, soil amendments serve as an energy input, nutrient source, and a driving force of microbial activities. Advanced technologies, such as microbiome analyses, make it possible to analyze soil microbial communities and soil health. As research advances on mechanisms and functions, amendment-based strategies will play an important role in enhancing soil health and disease suppression for better potato production.
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Zheng K, Lu J, Li J, Yu Y, Zhang J, He Z, Ismail OM, Wu J, Xie X, Li X, Xu G, Dou D, Wang X. Efficiency of chitosan application against Phytophthora infestans and the activation of defence mechanisms in potato. Int J Biol Macromol 2021; 182:1670-1680. [PMID: 34022316 DOI: 10.1016/j.ijbiomac.2021.05.097] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/09/2021] [Accepted: 05/15/2021] [Indexed: 01/23/2023]
Abstract
Late blight, caused by the oomycete Phytophthora infestans, is one of the most devastating diseases that results in huge losses of potato crops worldwide. Chitosan as a defence elicitor can induce plant innate immunity against pathogen infection, but the efficiency and specific defence mechanism of chitosan against late blight in potato have not been elaborated. In this study, we demonstrated that the application of chitosan significantly enhanced potato resistance and reduced P. infestans infection in potted potato and in the field. Large-scale transcriptomic analysis suggested that chitosan preferentially activated several important pathways related to the plant defence response. Notably, we revealed that chitosan triggered pattern-triggered immunity responses in potato. Chitosan could trigger pattern recognition receptors to initiate intracellular signalling, and gradually amplify the immune signal. qRT-PCR verification showed that chitosan induced the expression of defence-related genes in potato. Moreover, treatment with chitosan result in Induced Systemic Resistance (ISR) in potato, including an accumulation of plant hormone salicylic acid, increase in the level of phenylalanine ammonia lyase activity and a content decrease of malondialdehyde. These findings help elucidate chitosan-mediated activation of the immune system in potato and provide a potential ecofriendly strategy to control potato late blight in the field.
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Affiliation(s)
- Kangkai Zheng
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Jie Lu
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, PR China; Heilongjiang Academy of Agricultural Sciences, Harbin 150086, PR China
| | - Jie Li
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Yin Yu
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Jia Zhang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Ziwei He
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Omayma M Ismail
- Horticultural Crop Technology, National Research Center (NRC), 12311, Egypt
| | - Jie Wu
- Institute of Plant Protection, Hebei Academy of Agricultural and Forestry Sciences, IPM Center of Hebei Province, Baoding 071000, PR China
| | - Xuejun Xie
- Changzhou Institute of Technology, Changzhou 213032, PR China
| | - Xiaobo Li
- Crops Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of Crop Genetic Improvement, Guangdong, Guangzhou 510640, PR China
| | - Guangyuan Xu
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Daolong Dou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Xiaodan Wang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, PR China.
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Qi T, Wang S, Deng L, Yi L, Zeng K. Controlling pepper soft rot by Lactobacillus paracasei WX322 and identification of multiple bacteriocins by complete genome sequencing. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Interactions of tagatose with the sugar metabolism are responsible for Phytophthora infestans growth inhibition. Microbiol Res 2021; 247:126724. [PMID: 33640575 DOI: 10.1016/j.micres.2021.126724] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 01/17/2021] [Accepted: 02/10/2021] [Indexed: 02/08/2023]
Abstract
Tagatose is a rare sugar metabolised by a limited number of microorganisms that inhibits a large spectrum of phytopathogens. In particular, tagatose inhibited Phytophthora infestans growth and negatively affected mitochondrial processes. However, the possible effects of tagatose on P. infestans metabolism have not yet been investigated. The aim of this study was to analyse the impact of this rare sugar on the sugar metabolism in P. infestans, in order to better understand its mode of action. Tagatose inhibited the growth of P. infestans with a precise reprogramming of the carbohydrate metabolism that involved a decrease of glucose, glucose-1-phosphate and mannose content and β-glucosidase activity. The combination of tagatose with common sugars led to three different responses and highlighted antagonistic interactions. In particular, glucose partially attenuated the inhibitory effects of tagatose, while fructose fully impaired tagatose-mediated growth inhibition and metabolite changes. Moreover, sucrose did not attenuate tagatose effects, suggesting that the inhibition of sucrose catabolism and the alteration of glucose-related pathways contributed to the growth inhibition caused by tagatose to P. infestans. The interactions of tagatose with the common sugar metabolism were found to be a key mode of action against P. infestans growth, which may represent the basis for the further development of tagatose as an eco-friendly fungicide.
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13
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Elsherbiny EA, Amin BH, Aleem B, Kingsley KL, Bennett JW. Trichoderma Volatile Organic Compounds as a Biofumigation Tool against Late Blight Pathogen Phytophthora infestans in Postharvest Potato Tubers. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:8163-8171. [PMID: 32790355 DOI: 10.1021/acs.jafc.0c03150] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We tested the ability of 14 strains of Trichoderma to emit volatile compounds that decreased or stopped the growth of Phytophthora infestans. Volatile organic compounds (VOCs) emitted from Trichoderma strains designated T41 and T45 inhibited the mycelial growth of P. infestans grown on a laboratory medium by 80 and 81.4%, respectively, and on potato tubers by 93.1 and 94.1%, respectively. Using the DNA sequence analysis of the translation elongation factor region, both Trichoderma strains were identified as Trichoderma atroviride. VOCs emitted by the strains were analyzed, and 39 compounds were identified. The most abundant compounds were 3-methyl-1-butanol, 6-pentyl-2-pyrone, 2-methyl-1-propanol, and acetoin. Electron microscopy of the hyphae treated with T. atroviride VOCs revealed serious morphological and ultrastructural damages, including cell deformation, collapse, and degradation of cytoplasmic organelles. To our knowledge, this is the first report describing the ability of Trichoderma VOCs to suppress the growth of the late blight potato pathogen.
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Affiliation(s)
- Elsherbiny A Elsherbiny
- Plant Pathology Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, United States
| | - Basma H Amin
- Regional Center for Mycology and Biotechnology (RCMB), Al-Azhar University, Cairo 11651, Egypt
| | - Bushra Aleem
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, United States
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad 44000, Pakistan
| | - Kathryn L Kingsley
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, United States
| | - Joan W Bennett
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, United States
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14
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Contribution of Hydrogen Cyanide to the Antagonistic Activity of Pseudomonas Strains Against Phytophthora infestans. Microorganisms 2020; 8:microorganisms8081144. [PMID: 32731625 PMCID: PMC7464445 DOI: 10.3390/microorganisms8081144] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 07/22/2020] [Accepted: 07/27/2020] [Indexed: 11/17/2022] Open
Abstract
Plants face many biotic and abiotic challenges in nature; one of them is attack by disease-causing microbes. Phytophthora infestans, the causal agent of late blight is one of the most prominent pathogens of the potato responsible for multi-billion-dollar losses every year. We have previously reported that potato-associated Pseudomonas strains inhibited P. infestans at various developmental stages. A comparative genomics approach identified several factors putatively involved in this anti-oomycete activity, among which was the production of hydrogen cyanide (HCN). Here, we report the relative contribution of HCN emission to the overall anti-Phytophthora activity of two cyanogenic Pseudomonas strains, P. putida R32 and P. chlororaphis R47. To quantify this contribution, we generated HCN-negative mutants (Δhcn) and compared their activities to those of their respective wild types in different experiments assessing P. infestans mycelial growth, zoospore germination, and infection of potato leaf disks. Using in vitro experiments allowing only volatile-mediated interactions, we observed that HCN accounted for most of the mycelial growth inhibition (57% in R47 and 80% in R32). However, when allowing both volatile and diffusible compound-mediated interactions, HCN only accounted for 1% (R47) and 18% (R32) of mycelial growth inhibition. Likewise, both mutants inhibited zoospore germination in a similar way as their respective wild types. More importantly, leaf disk experiments showed that both wild-type and Δhcn strains of R47 and R32 were able to limit P. infestans infection to a similar extent. Our results suggest that while HCN is a major contributor to the in vitro volatile-mediated restriction of P. infestans mycelial growth, it does not play a major role in the inhibition of other disease-related features such as zoospore germination or infection of plant tissues.
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15
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Börner RA, Kandasamy V, Axelsen AM, Nielsen AT, Bosma EF. Genome editing of lactic acid bacteria: opportunities for food, feed, pharma and biotech. FEMS Microbiol Lett 2019; 366:5251984. [PMID: 30561594 PMCID: PMC6322438 DOI: 10.1093/femsle/fny291] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 12/16/2018] [Indexed: 12/16/2022] Open
Abstract
This mini-review provides a perspective of traditional, emerging and future applications of lactic acid bacteria (LAB) and how genome editing tools can be used to overcome current challenges in all these applications. It also describes available tools and how these can be further developed, and takes current legislation into account. Genome editing tools are necessary for the construction of strains for new applications and products, but can also play a crucial role in traditional ones, such as food and probiotics, as a research tool for gaining mechanistic insights and discovering new properties. Traditionally, recombinant DNA techniques for LAB have strongly focused on being food-grade, but they lack speed and the number of genetically tractable strains is still rather limited. Further tool development will enable rapid construction of multiple mutants or mutant libraries on a genomic level in a wide variety of LAB strains. We also propose an iterative Design–Build–Test–Learn workflow cycle for LAB cell factory development based on systems biology, with ‘cell factory’ expanding beyond its traditional meaning of production strains and making use of genome editing tools to advance LAB understanding, applications and strain development.
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Affiliation(s)
- Rosa A Börner
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet B220, 2800 Kongens Lyngby, Denmark
| | - Vijayalakshmi Kandasamy
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet B220, 2800 Kongens Lyngby, Denmark
| | - Amalie M Axelsen
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet B220, 2800 Kongens Lyngby, Denmark
| | - Alex T Nielsen
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet B220, 2800 Kongens Lyngby, Denmark
| | - Elleke F Bosma
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet B220, 2800 Kongens Lyngby, Denmark
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16
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Tagele SB, Kim SW, Lee HG, Lee YS. Potential of Novel Sequence Type of Burkholderia cenocepacia for Biological Control of Root Rot of Maize ( Zea mays L.) Caused by Fusarium temperatum. Int J Mol Sci 2019; 20:E1005. [PMID: 30813526 PMCID: PMC6429479 DOI: 10.3390/ijms20051005] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/13/2019] [Accepted: 02/17/2019] [Indexed: 11/25/2022] Open
Abstract
In this study, two Burkholderia strains, strain KNU17BI2 and strain KNU17BI3, were isolated from maize rhizospheric soil, South Korea. The 16S rRNA gene and multilocus sequence analysis and typing (MLSA-MLST) were used for the identification of the studied strains. Strain KNU17BI2, which belonged to Burkholderia cenocepacia, was of a novel sequence type (ST) designated ST-1538, while strain KNU17BI3 had a similar allelic profile with the seven loci of Burkholderia contaminans strain LMG 23361. The strains were evaluated in vitro for their specific plant growth promoting (PGP) traits, such as zinc solubilization, phosphate solubilization, ammonia production, 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity, indole acetic acid (IAA) production, siderophore, and hydrolytic enzyme activity. Interestingly, the strains exhibited a positive effect on all of the tested parameters. The strains also showed broad-spectrum antifungal activity against economically important phytopathogens in the dual culture assay. Furthermore, the strains were evaluated under greenhouse conditions for their in vivo effect to promote plant growth and to suppress the root rot of maize that is caused by Fusarium temperatum on four Korean maize cultivars. The results of the greenhouse study revealed that both of the strains were promising to significantly suppress fusarium root rot and enhance plant growth promotion on the four maize cultivars. This study, for the first time, reported in vitro antifungal potential of B. cenocepacia of novel ST against economically important plant pathogens viz., F. temperatum, Fusarium graminearum, Fusarium moniliforme, Fusarium oxysporum f.sp. melonis, Fusarium subglutinans, Phytophthora drechsleri, and Stemphylium lycopersici. This is also the first report of zinc solubilization by B. cenocepacia. Moreover, the present research work reports, for the first time, about the potential of B. cenocepacia and B. contaminans to control the root rot of maize that is caused by F. temperatum. Therefore, we recommend further studies to precisely identify the bioactive chemical compounds behind such activities that would be novel sources of natural products for biological control and plant growth promotion of different crops.
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Affiliation(s)
- Setu Bazie Tagele
- Department of Applied Plant Sciences, Kangwon National University, Chuncheon 24341, Korea.
| | - Sang Woo Kim
- Department of Applied Plant Sciences, Kangwon National University, Chuncheon 24341, Korea.
| | - Hyun Gu Lee
- Department of Applied Plant Sciences, Kangwon National University, Chuncheon 24341, Korea.
| | - Youn Su Lee
- Department of Applied Plant Sciences, Kangwon National University, Chuncheon 24341, Korea.
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17
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De Vrieze M, Germanier F, Vuille N, Weisskopf L. Combining Different Potato-Associated Pseudomonas Strains for Improved Biocontrol of Phytophthora infestans. Front Microbiol 2018; 9:2573. [PMID: 30420845 PMCID: PMC6215842 DOI: 10.3389/fmicb.2018.02573] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 10/09/2018] [Indexed: 11/13/2022] Open
Abstract
Late blight caused by Phytophthora infestans is considered as the most devastating disease of potato and is a re-emerging problem worldwide. Current late blight control practices rely mostly on synthetic fungicides or copper-based products, but growing awareness of the negative impact of these compounds on the environment has led to the search for alternative control measures. A collection of Pseudomonas strains isolated from both the rhizosphere and the phyllosphere of potato was recently characterized for in vitro protective effects against P. infestans. In the present study, we used a leaf disk assay with three different potato cultivars to compare the disease inhibition capacity of nine selected Pseudomonas strains when applied alone or in all possible dual and triple combinations. Results showed a strong cultivar effect and identified strains previously thought to be inactive based on in vitro assays as the best biocontrol candidates. One strain was much more active alone than in combination with other strains, while two other strains provided significantly better protection in dual combination than when applied alone. A subset of five strains was then further selected to determine their mutual influence on each other's survival and growth, as well as to characterize their activity against P. infestans in more details. This revealed that the two strains whose dual combination was particularly efficient were only weakly interfering with each other's growth and had complementary modes of action. Our results highlight the potential to harness the crop's native rhizosphere and phyllosphere microbiome through re-assembling strains with differing modes of action into small communities, thereby providing more consistent protection than with the application of single strains. We consider this as a first step toward more elaborate microbiome management efforts, which shall be integrated into global strategies for sustainable control of potato late blight.
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Affiliation(s)
- Mout De Vrieze
- Department of Biology, University of Fribourg, Fribourg, Switzerland.,Institute for Plant Production Sciences, Agroscope, Nyon, Switzerland
| | - Fanny Germanier
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Nicolas Vuille
- Institute for Plant Production Sciences, Agroscope, Nyon, Switzerland
| | - Laure Weisskopf
- Department of Biology, University of Fribourg, Fribourg, Switzerland
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18
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Postulkova M, Rezanina J, Fiala J, Ruzicka MC, Dostalek P, Branyik T. Suppression of fungal contamination by Pythium oligandrum
during malting of barley. JOURNAL OF THE INSTITUTE OF BREWING 2018. [DOI: 10.1002/jib.518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Michaela Postulkova
- Department of Biotechnology; University of Chemistry and Technology; Technicka 5 166 28 Prague Czech Republic
- Department of Multiphase Reactors; Institute of Chemical Process Fundamentals, Czech Academy of Sciences; Rozvojova 135 165 02 Prague Czech Republic
| | - Jan Rezanina
- Department of Biotechnology; University of Chemistry and Technology; Technicka 5 166 28 Prague Czech Republic
| | - Jaromir Fiala
- Department of Biotechnology; University of Chemistry and Technology; Technicka 5 166 28 Prague Czech Republic
- Research Institute of Brewing and Malting; Lipova 15 120 44 Prague Czech Republic
| | - Marek C. Ruzicka
- Department of Multiphase Reactors; Institute of Chemical Process Fundamentals, Czech Academy of Sciences; Rozvojova 135 165 02 Prague Czech Republic
| | - Pavel Dostalek
- Department of Biotechnology; University of Chemistry and Technology; Technicka 5 166 28 Prague Czech Republic
| | - Tomas Branyik
- Department of Biotechnology; University of Chemistry and Technology; Technicka 5 166 28 Prague Czech Republic
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19
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Jiang N, Cui J, Meng J, Luan Y. A Tomato Nucleotide Binding Sites-Leucine-Rich Repeat Gene Is Positively Involved in Plant Resistance to Phytophthora infestans. PHYTOPATHOLOGY 2018; 108:980-987. [PMID: 29595084 DOI: 10.1094/phyto-12-17-0389-r] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The nucleotide binding sites-leucine-rich repeat (NBS-LRR) genes are key regulatory components of plant to pathogens. Phytophthora infestans-inducible coding sequence encoding an NBS-LRR (SpNBS-LRR) protein in tomato (Solanum pimpinellifolium L3708) was cloned and characterized based on our RNA-Seq data and tomato genome. After sequence analysis, SpNBS-LRR was identified as a hydrophilic protein with no transmembrane topological structure and no signal peptide. SpNBS-LRR had a close genetic relationship to RPS2 of Arabidopsis thaliana by phylogenetic analysis. In addition, SpNBS-LRR gene was mainly expressed in root, with low expression observed in leaf and stem. To further investigate the role of SpNBS-LRR in tomato-P. infestans interaction, SpNBS-LRR was introduced in susceptible tomatoes and three transgenic lines with higher expression level of SpNBS-LRR were selected. These transgenic tomato plants that overexpressed SpNBS-LRR displayed greater resistance than wild-type tomato plants after infection with P. infestans, as shown by decreased disease index, lesion diameters, number of necrotic cells, P. infestans abundance, and higher expression levels of the defense-related genes. This information provides insight into SpNBS-LRR involved in the resistance of tomato to P. infestans infection and candidate for breeding to enhance biotic stress-resistance in tomato.
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Affiliation(s)
- Ning Jiang
- First, second, and fourth authors: School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116024, China; and third author: School of Computer Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jun Cui
- First, second, and fourth authors: School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116024, China; and third author: School of Computer Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jun Meng
- First, second, and fourth authors: School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116024, China; and third author: School of Computer Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yushi Luan
- First, second, and fourth authors: School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116024, China; and third author: School of Computer Science and Technology, Dalian University of Technology, Dalian 116024, China
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20
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Andreazza F, Vacacela Ajila HE, Haddi K, Colares F, Pallini A, Oliveira EE. Toxicity to and egg-laying avoidance of Drosophila suzukii (Diptera: Drosophilidae) caused by an old alternative inorganic insecticide preparation. PEST MANAGEMENT SCIENCE 2018; 74:861-867. [PMID: 29064624 DOI: 10.1002/ps.4772] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/19/2017] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND The application of synthetic insecticides remains the most used tool for the management of spotted-wing drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae). However, management of this pest in the organic production of soft-skinned fruits is a complex task due to the restricted number of registered products. Here, we assess the toxicity of lime sulfur and evaluate whether lime sulfur-treated strawberry plants affected the oviposition and development of D. suzukii. RESULTS Lime sulfur exhibited adequate toxicity to D. suzukii (LC50 = 26.6 mL L-1 ) without phytotoxicity to strawberry plants. When D. suzukii females were exposed to lime sulfur-treated plants in no-choice bioassays, oviposition was significantly (t-test, P < 0.05) reduced compared with that on untreated plants. In free-choice bioassays, D. suzukii females laid significantly (paired t-test, P < 0.05) more eggs on untreated plants. Furthermore, in the free-choice bioassays, immature development was slower for adults that originated from eggs laid on lime sulfur-treated plants than from those laid on untreated plants. CONCLUSIONS Lime sulfur showed adequate control and, therefore, has potential for use as a management tool against D. suzukii infestations in organic production systems. This old, alternative insecticide preparation not only caused adult fly mortality, but also reduced the number of eggs laid on lime sulfur-treated plants. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Felipe Andreazza
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Brazil
| | | | - Khalid Haddi
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Brazil
- Science Without Borders Associate Researcher, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Felipe Colares
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Angelo Pallini
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Eugênio E Oliveira
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Brazil
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21
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Dahlin P, Müller MC, Ekengren S, McKee LS, Bulone V. The Impact of Steroidal Glycoalkaloids on the Physiology of Phytophthora infestans, the Causative Agent of Potato Late Blight. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2017; 30:531-542. [PMID: 28510502 DOI: 10.1094/mpmi-09-16-0186-r] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Steroidal glycoalkaloids (SGAs) are plant secondary metabolites known to be toxic to animals and humans and that have putative roles in defense against pests. The proposed mechanisms of SGA toxicity are sterol-mediated disruption of membranes and inhibition of cholinesterase activity in neurons. It has been suggested that phytopathogenic microorganisms can overcome SGA toxicity by enzymatic deglycosylation of SGAs. Here, we have explored SGA-mediated toxicity toward the invasive oomycete Phytophthora infestans, the causative agent of the late blight disease in potato and tomato, as well as the potential for SGA deglycosylation by this species. Our growth studies indicate that solanidine, the nonglycosylated precursor of the potato SGAs α-chaconine and α-solanine, has a greater physiological impact than its glycosylated forms. All of these compounds were incorporated into the mycelium, but only solanidine could strongly inhibit the growth of P. infestans in liquid culture. Genes encoding several glycoside hydrolases with potential activity on SGAs were identified in the genome of P. infestans and were shown to be expressed. However, we found no indication that deglycosylation of SGAs takes place. We present additional evidence for apparent host-specific adaptation to potato SGAs and assess all results in terms of future pathogen management strategies.
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Affiliation(s)
- Paul Dahlin
- 1 Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), AlbaNova University Centre, 10691 Stockholm, Sweden
- 2 Department of Ecology, Environment and Plant Sciences, Stockholm University, 10691 Stockholm, Sweden
| | - Marion C Müller
- 1 Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), AlbaNova University Centre, 10691 Stockholm, Sweden
- 2 Department of Ecology, Environment and Plant Sciences, Stockholm University, 10691 Stockholm, Sweden
| | - Sophia Ekengren
- 1 Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), AlbaNova University Centre, 10691 Stockholm, Sweden
- 2 Department of Ecology, Environment and Plant Sciences, Stockholm University, 10691 Stockholm, Sweden
| | - Lauren S McKee
- 1 Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), AlbaNova University Centre, 10691 Stockholm, Sweden
- 3 Wallenberg Wood Science Centre, Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), AlbaNova University Centre, 106 91 Stockholm, Sweden; and
| | - Vincent Bulone
- 1 Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), AlbaNova University Centre, 10691 Stockholm, Sweden
- 4 ARC Centre of Excellence in Plant Cell Walls and School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, Urrbrae, SA 5064 Australia
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22
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Morrison CK, Arseneault T, Novinscak A, Filion M. Phenazine-1-Carboxylic Acid Production by Pseudomonas fluorescens LBUM636 Alters Phytophthora infestans Growth and Late Blight Development. PHYTOPATHOLOGY 2017; 107:273-279. [PMID: 27827009 DOI: 10.1094/phyto-06-16-0247-r] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Phytophthora infestans causes late blight of potato, one of the most devastating diseases affecting potato production. Alternative approaches for controlling late blight are being increasingly sought due to increasing environmental concerns over the use of chemical pesticides and the increasing resistance of P. infestans to fungicides. Our research group has isolated a new strain of Pseudomonas fluorescens (LBUM636) of biocontrol interest producing the antibiotic phenazine-1-carboxylic acid (PCA). Wild-type LBUM636 was shown to significantly inhibit the growth of Phytophthora infestans in in vitro confrontational assays whereas its isogenic mutant (phzC-; not producing PCA) only slightly altered the pathogen's growth. Wild-type LBUM636 but not the phzC- mutant also completely repressed disease symptom development on tubers. A pot experiment revealed that wild-type LBUM636 can significantly reduce P. infestans populations in the rhizosphere and in the roots of potato plants, as well as reduce in planta disease symptoms due to PCA production. The expression of eight common plant defense-related genes (ChtA, PR-1b, PR-2, PR-5, LOX, PIN2, PAL-2, and ERF3) was quantified in tubers, roots, and leaves by reverse-transcription quantitative polymerase chain reaction and revealed that the biocontrol observed was not associated with the induction of a plant defense response by LBUM636. Instead, a direct interaction between P. infestans and LBUM636 is required and PCA production appears to be a key factor for LBUM636's biocontrol ability.
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Affiliation(s)
- Christopher K Morrison
- Department of Biology, Université de Moncton, 18 Antonine-Maillet Ave., Moncton, NB, E1A 3E9 Canada
| | - Tanya Arseneault
- Department of Biology, Université de Moncton, 18 Antonine-Maillet Ave., Moncton, NB, E1A 3E9 Canada
| | - Amy Novinscak
- Department of Biology, Université de Moncton, 18 Antonine-Maillet Ave., Moncton, NB, E1A 3E9 Canada
| | - Martin Filion
- Department of Biology, Université de Moncton, 18 Antonine-Maillet Ave., Moncton, NB, E1A 3E9 Canada
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23
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Konstantinovas C, de Oliveira Mendes TA, Vannier-Santos MA, Lima-Santos J. Modulation of Human Immune Response by Fungal Biocontrol Agents. Front Microbiol 2017; 8:39. [PMID: 28217107 PMCID: PMC5289975 DOI: 10.3389/fmicb.2017.00039] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 01/06/2017] [Indexed: 01/29/2023] Open
Abstract
Although the vast majority of biological control agents is generally regarded as safe for humans and environment, the increased exposure of agriculture workers, and consumer population to fungal substances may affect the immune system. Those compounds may be associated with both intense stimulation, resulting in IgE-mediated allergy and immune downmodulation induced by molecules such as cyclosporin A and mycotoxins. This review discusses the potential effects of biocontrol fungal components on human immune responses, possibly associated to infectious, inflammatory diseases, and defective defenses.
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Affiliation(s)
- Cibele Konstantinovas
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz Ilhéus, Brazil
| | | | - Marcos A Vannier-Santos
- Biologia Celular Parasitária, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz Salvador, Brazil
| | - Jane Lima-Santos
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz Ilhéus, Brazil
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24
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Guyer A, De Vrieze M, Bönisch D, Gloor R, Musa T, Bodenhausen N, Bailly A, Weisskopf L. The Anti-Phytophthora Effect of Selected Potato-Associated Pseudomonas Strains: From the Laboratory to the Field. Front Microbiol 2015; 6:1309. [PMID: 26640460 PMCID: PMC4661289 DOI: 10.3389/fmicb.2015.01309] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 11/09/2015] [Indexed: 11/17/2022] Open
Abstract
Late blight, caused by the oomycete Phytophthora infestans, is the most devastating disease of potato. In organic farming, late blight is controlled by repeated applications of copper-based products, which negatively impact the environment. To find alternative solutions for late blight management, we have previously isolated a large collection of bacteria from the phyllosphere and the rhizosphere of potatoes. Here we report the antagonistic potential of these strains when co-cultivated with P. infestans as well as with other potato pathogens. We then focused on three Pseudomonas strains and compared their protective impact against late blight to that of well-known biocontrol strains in planta using a high-throughput leaf disk assay with automated picture analysis. When sprayed on the leaves of potatoes in the greenhouse, the strains were able to survive for at least 15 days. Under field conditions, populations decreased faster but all tested strains could still be retrieved after 8 days. The most active strain in vitro, P. chlororaphis R47, was also the best protectant on leaf disks from plants grown in the greenhouse experiment, but its protection potential could not be verified in the field due to unfavorable infection conditions. However, its protective effect against P. infestans in planta, its survival in the phyllosphere as well as its ability to colonize the potato rhizosphere in very high population densities, suggest a potential for field application, e.g., in the form of tuber treatment or leaf spray.
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Affiliation(s)
- Anouk Guyer
- Agroscope, Institute of Sustainability Sciences Zurich, Switzerland
| | - Mout De Vrieze
- Agroscope, Institute of Sustainability Sciences Zurich, Switzerland ; Agroscope, Institute of Plant Production Sciences Nyon, Switzerland
| | - Denise Bönisch
- Agroscope, Institute of Sustainability Sciences Zurich, Switzerland
| | - Ramona Gloor
- Agroscope, Institute of Sustainability Sciences Zurich, Switzerland ; Agroscope, Institute of Plant Production Sciences Nyon, Switzerland
| | - Tomke Musa
- Agroscope, Institute of Sustainability Sciences Zurich, Switzerland
| | | | - Aurélien Bailly
- Agroscope, Institute of Sustainability Sciences Zurich, Switzerland
| | - Laure Weisskopf
- Agroscope, Institute of Sustainability Sciences Zurich, Switzerland ; Agroscope, Institute of Plant Production Sciences Nyon, Switzerland ; Viticulture and Oenology, CHANGINS, University of Applied Sciences and Arts Western Switzerland Nyon, Switzerland
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Quantification of cyclic dipeptides from cultures of Lactobacillus brevis R2Δ by HRGC/MS using stable isotope dilution assay. Anal Bioanal Chem 2014; 406:2433-44. [DOI: 10.1007/s00216-014-7620-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 12/19/2013] [Accepted: 01/09/2014] [Indexed: 10/25/2022]
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