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Zerbo KBF, Yameogo F, Wonni I, Somda I. Analysis of the Genetic Variation and Geographic Distribution Patterns of Xanthomonas citri pv. citri Strains in Citrus Production in Burkina Faso. PHYTOPATHOLOGY 2024:PHYTO04240121R. [PMID: 38829919 DOI: 10.1094/phyto-04-24-0121-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
It is essential to have a thorough knowledge of the genetic variation among different strains of Xanthomonas citri pv. citri, which is responsible for causing citrus bacterial canker. This understanding is important for studying disease characteristics, population structure, and evolution and ultimately for developing sustainable methods of control. A total of 48 strains obtained from citrus production areas in Burkina Faso in 2012, 2020, and 2021 were subjected to Polymerase Chain reaction (PCR) tests using specific primers. The aim was to examine the distribution of type 3 effectors and determine the geographical origins of the strains. The examination of the distribution of type 3 non-transcription-activator-like effectors (TALEs) revealed a broader range of strains obtained in 2020 and 2021 than in 2012. However, all the strains possessed a shared set of three genes, specifically, XopE2, XopN, and AvrBs2. Furthermore, all examined effectors were observed in the Bobo-Dioulasso region. Regarding the characterization of TALEs, two profiles containing two to three TALEs were discovered. Profile 1, consisting of two TALEs, was found in 37 X. citri pv. citri strains, whereas Profile 2, comprising three TALEs, was detected in 11 strains. Among the three TALEs (A, B, and C) that were identified, TALEs B and C were present in all the strains. The correlation matrix indicated a positive association between the type 3 effector content of strains and the duration of their isolation. Principal component analysis revealed a limited organization of the strains under investigation. [Formula: see text] Copyright © 2024 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Kevin Ben Fabrice Zerbo
- Centre National de la Recherche Scientifique et Technologique/Institut de l'Environnement et de Recherches Agricoles (INERA)/Laboratoire Mixte International/Observatoire des Agents Pathogènes, Biosécurité et Biodiversité (LMI PathoBios), 01 BP 910, Bobo-Dioulasso, Burkina Faso
- Université Nazi BONI/Clinique des Plantes, 01 BP1091, Bobo-Dioulasso, Burkina Faso
| | - Florence Yameogo
- Centre National de la Recherche Scientifique et Technologique/Institut de l'Environnement et de Recherches Agricoles (INERA)/Laboratoire Mixte International/Observatoire des Agents Pathogènes, Biosécurité et Biodiversité (LMI PathoBios), 01 BP 910, Bobo-Dioulasso, Burkina Faso
- Université Nazi BONI/Clinique des Plantes, 01 BP1091, Bobo-Dioulasso, Burkina Faso
| | - Issa Wonni
- Centre National de la Recherche Scientifique et Technologique/Institut de l'Environnement et de Recherches Agricoles (INERA)/Laboratoire Mixte International/Observatoire des Agents Pathogènes, Biosécurité et Biodiversité (LMI PathoBios), 01 BP 910, Bobo-Dioulasso, Burkina Faso
| | - Irénée Somda
- Université Nazi BONI/Clinique des Plantes, 01 BP1091, Bobo-Dioulasso, Burkina Faso
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Xu J, Zhang Y, Li J, Teper D, Sun X, Jones D, Wang Y, Tao J, Goss EM, Jones JB, Wang N. Phylogenomic analysis of 343 Xanthomonas citri pv. citri strains unravels introduction history and dispersal paths. PLoS Pathog 2023; 19:e1011876. [PMID: 38100539 PMCID: PMC10756548 DOI: 10.1371/journal.ppat.1011876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 12/29/2023] [Accepted: 11/30/2023] [Indexed: 12/17/2023] Open
Abstract
Xanthomonas citri pv. citri (Xcc) causes the devastating citrus canker disease. Xcc is known to have been introduced into Florida, USA in at least three different events in 1915, 1986 and 1995 with the first two claimed to be eradicated. It was questioned whether the Xcc introduction in 1986 has been successfully eradicated. Furthermore, it is unknown how Xcc has spread throughout the citrus groves in Florida. In this study, we investigated the population structure of Xcc to address these questions. We sequenced the whole genome of 343 Xcc strains collected from Florida groves between 1997 and 2016. Our analysis revealed two distinct clusters of Xcc. Our data strongly indicate that the claimed eradication of the 1986 Xcc introduction was not successful and Xcc strains from 1986 introduction were present in samples from at least 8 counties collected after 1994. Importantly, our data revealed that the Cluster 2 strains, which are present in all 20 citrus-producing counties sampled in Florida, originated from the Xcc introduction event in the Miami area in 1995. Our data suggest that Polk County is the epicenter of the dispersal of Cluster 2 Xcc strains, which is consistent with the fact that three major hurricanes passed through Polk County in 2004. As copper-based products have been extensively used to control citrus canker, we also investigated whether Xcc strains have developed resistance to copper. Notably, none of the 343 strains contained known copper resistance genes. Twenty randomly selected Xcc strains displayed sensitivity to copper. Overall, this study provides valuable insights into the introduction, eradication, spread, and copper resistance of Xcc in Florida.
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Affiliation(s)
- Jin Xu
- Citrus Research and Education Center, Department of Microbiology and Cell Science, IFAS, University of Florida, Lake Alfred, Florida, United States of America
| | - Yanan Zhang
- Citrus Research and Education Center, Department of Microbiology and Cell Science, IFAS, University of Florida, Lake Alfred, Florida, United States of America
| | - Jinyun Li
- Citrus Research and Education Center, Department of Microbiology and Cell Science, IFAS, University of Florida, Lake Alfred, Florida, United States of America
| | - Doron Teper
- Citrus Research and Education Center, Department of Microbiology and Cell Science, IFAS, University of Florida, Lake Alfred, Florida, United States of America
| | - Xiaoan Sun
- Florida Department of Agriculture and Consumer Services, Gainesville, Florida, United States of America
| | - Debra Jones
- Florida Department of Agriculture and Consumer Services, Gainesville, Florida, United States of America
| | - Yayu Wang
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, China
| | - Jin Tao
- Guangdong Magigene Biotechnology Co., Ltd., Guangzhou, China
| | - Erica M. Goss
- Department of Plant Pathology, IFAS, University of Florida, Gainesville, Florida, United States of America
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida, United States of America
| | - Jeffrey B. Jones
- Department of Plant Pathology, IFAS, University of Florida, Gainesville, Florida, United States of America
| | - Nian Wang
- Citrus Research and Education Center, Department of Microbiology and Cell Science, IFAS, University of Florida, Lake Alfred, Florida, United States of America
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Yu Y, Liu H, Xia H, Chu Z. Double- or Triple-Tiered Protection: Prospects for the Sustainable Application of Copper-Based Antimicrobial Compounds for Another Fourteen Decades. Int J Mol Sci 2023; 24:10893. [PMID: 37446071 DOI: 10.3390/ijms241310893] [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: 03/01/2023] [Revised: 06/23/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
Copper (Cu)-based antimicrobial compounds (CBACs) have been widely used to control phytopathogens for nearly fourteen decades. Since the first commercialized Bordeaux mixture was introduced, CBACs have been gradually developed from highly to slightly soluble reagents and from inorganic to synthetic organic, with nanomaterials being a recent development. Traditionally, slightly soluble CBACs form a physical film on the surface of plant tissues, separating the micro-organisms from the host, then release divalent or monovalent copper ions (Cu2+ or Cu+) to construct a secondary layer of protection which inhibits the growth of pathogens. Recent progress has demonstrated that the release of a low concentration of Cu2+ may elicit immune responses in plants. This supports a triple-tiered protection role of CBACs: break contact, inhibit microorganisms, and stimulate host immunity. This spatial defense system, which is integrated both inside and outside the plant cell, provides long-lasting and broad-spectrum protection, even against emergent copper-resistant strains. Here, we review recent findings and highlight the perspectives underlying mitigation strategies for the sustainable utilization of CBACs.
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Affiliation(s)
- Yue Yu
- State Key Laboratory of Hybrid Rice, Hubei Hongshan Laboratory, College of Life Sciences, Wuhan University, Wuhan 430072, China
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Haifeng Liu
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, China
| | - Haoran Xia
- State Key Laboratory of Hybrid Rice, Hubei Hongshan Laboratory, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Zhaohui Chu
- State Key Laboratory of Hybrid Rice, Hubei Hongshan Laboratory, College of Life Sciences, Wuhan University, Wuhan 430072, China
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Costa J, Pothier JF, Boch J, Stefani E, Koebnik R. Integrating Science on Xanthomonas and Xylella for Integrated Plant Disease Management. Microorganisms 2022; 11:microorganisms11010006. [PMID: 36677298 PMCID: PMC9861534 DOI: 10.3390/microorganisms11010006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 12/03/2022] [Indexed: 12/24/2022] Open
Abstract
Present, emerging or re-emerging plant diseases due to infection by bacteria of the Lysobacteraceae (syn: Xanthomonadaceae) family are continually challenging food security and cause significant losses to the economies of European countries each year [...].
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Affiliation(s)
- Joana Costa
- University of Coimbra, Centre for Functional Ecology, Department of Life Sciences, 3000-456 Coimbra, Portugal
- Laboratory for Phytopathology, Instituto Pedro Nunes, 3030-199 Coimbra, Portugal
| | - Joël F. Pothier
- Environmental Genomics and Systems Biology Research Group, Institute of Natural Resource Sciences, Zurich University of Applied Sciences (ZHAW), 8820 Wädenswil, Switzerland
| | - Jens Boch
- Institute of Plant Genetics, Leibniz Universität Hannover, 30419 Hannover, Germany
| | - Emilio Stefani
- Department of Life Sciences, University of Modena and Reggio Emilia, 42122 Reggio Emilia, Italy
| | - Ralf Koebnik
- Plant Health Institute of Montpellier, University of Montpellier, CIRAD, INRAE, Institut Agro, IRD, 34394 Montpellier, France
- Correspondence: ; Tel.: +33-467-416228
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Pruvost O, Ibrahim YE, Sharafaddin AH, Boyer K, Widyawan A, Al‐Saleh MA. Molecular epidemiology of the citrus bacterial pathogen Xanthomonas citri pv. citri from the Arabian Peninsula reveals a complex structure of specialist and generalist strains. Evol Appl 2022; 15:1423-1435. [PMID: 36187189 PMCID: PMC9488683 DOI: 10.1111/eva.13451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 06/16/2022] [Accepted: 07/11/2022] [Indexed: 11/30/2022] Open
Abstract
Molecular epidemiology studies are essential to refine our understanding of migrations of phytopathogenic bacteria, the major determining factor in their emergence, and to understand the factors that shape their population structure. Microsatellite and minisatellite typing are useful techniques for deciphering the population structure of Xanthomonas citri pv. citri, the causal agent of Asiatic citrus canker. This paper presents a molecular epidemiology study, which has improved our understanding of the history of the pathogen's introductions into the Arabian Peninsula, since it was first reported in the 1980s. An unexpectedly high genetic diversity of the pathogen was revealed. The four distinct genetic lineages within X. citri pv. citri, which have been reported throughout the world, were identified in the Arabian Peninsula, most likely as the result of multiple introductions. No copper-resistant X. citri pv. citri strains were identified. The pathogen's population structure on Mexican lime (their shared host species) was closely examined in two countries, Saudi Arabia and Yemen. We highlighted the marked prevalence of specialist pathotype A* strains in both countries, which suggests that specialist strains of X. citri pv. citri may perform better than generalist strains when they occur concomitantly in this environment. Subclade 4.2 was the prevailing lineage identified. Several analyses (genetic structure deciphered by discriminant analysis of principal components, RST-based genetic differentiation, geographic structure) congruently suggested the role of human activities in the pathogen's spread. We discuss the implications of these results on the management of Asiatic citrus canker in the region.
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Affiliation(s)
| | - Yasser Eid Ibrahim
- Department of Plant Protection, College of Food and Agriculture SciencesKing Saud UniversityRiyadhSaudi Arabia
| | - Anwar Hamoud Sharafaddin
- Department of Plant Protection, College of Food and Agriculture SciencesKing Saud UniversityRiyadhSaudi Arabia
| | | | - Arya Widyawan
- Department of Plant Protection, College of Food and Agriculture SciencesKing Saud UniversityRiyadhSaudi Arabia
| | - Mohammed Ali Al‐Saleh
- Department of Plant Protection, College of Food and Agriculture SciencesKing Saud UniversityRiyadhSaudi Arabia
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