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Ariute JC, Felice AG, Soares S, da Gama MAS, de Souza EB, Azevedo V, Brenig B, Aburjaile F, Benko-Iseppon AM. Characterization and Association of Rips Repertoire to Host Range of Novel Ralstonia solanacearum Strains by In Silico Approaches. Microorganisms 2023; 11:microorganisms11040954. [PMID: 37110377 PMCID: PMC10144018 DOI: 10.3390/microorganisms11040954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/24/2022] [Accepted: 01/28/2023] [Indexed: 04/29/2023] Open
Abstract
Ralstonia solanacearum species complex (RSSC) cause several phytobacteriosis in many economically important crops around the globe, especially in the tropics. In Brazil, phylotypes I and II cause bacterial wilt (BW) and are indistinguishable by classical microbiological and phytopathological methods, while Moko disease is caused only by phylotype II strains. Type III effectors of RSSC (Rips) are key molecular actors regarding pathogenesis and are associated with specificity to some hosts. In this study, we sequenced and characterized 14 newly RSSC isolates from Brazil's Northern and Northeastern regions, including BW and Moko ecotypes. Virulence and resistance sequences were annotated, and the Rips repertoire was predicted. Confirming previous studies, RSSC pangenome is open as α≅0.77. Genomic information regarding these isolates matches those for R. solanacearum in NCBI. All of them fit in phylotype II with a similarity above 96%, with five isolates in phylotype IIB and nine in phylotype IIA. Almost all R. solanacearum genomes in NCBI are actually from other species in RSSC. Rips repertoire of Moko IIB was more homogeneous, except for isolate B4, which presented ten non-shared Rips. Rips repertoire of phylotype IIA was more diverse in both Moko and BW, with 43 common shared Rips among all 14 isolates. New BW isolates shared more Rips with Moko IIA and Moko IIB than with other public BW genome isolates from Brazil. Rips not shared with other isolates might contribute to individual virulence, but commonly shared Rips are good avirulence candidates. The high number of Rips shared by new Moko and BW isolates suggests they are actually Moko isolates infecting solanaceous hosts. Finally, infection assays and Rips expression on different hosts are needed to better elucidate the association between Rips repertoire and host specificities.
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Affiliation(s)
- Juan Carlos Ariute
- Preventive Veterinary Medicine Departament, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
- Genetics Department, Universidade Federal de Pernambuco, Recife 50740-600, Pernambuco, Brazil
| | - Andrei Giachetto Felice
- Institute of Biological and Natural Sciences, Universidade Federal do Triângulo Mineiro, Uberaba 38025-180, Minas Gerais, Brazil
| | - Siomar Soares
- Institute of Biological and Natural Sciences, Universidade Federal do Triângulo Mineiro, Uberaba 38025-180, Minas Gerais, Brazil
| | | | - Elineide Barbosa de Souza
- Department of Agronomy, Universidade Federal Rural de Pernambuco, Recife 52171-900, Pernambuco, Brazil
| | - Vasco Azevedo
- Genetics, Ecology and Evolution Department, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Bertram Brenig
- Institute of Veterinary Medicine, University Göttingen, 37077 Göttingen, Germany
| | - Flávia Aburjaile
- Preventive Veterinary Medicine Departament, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Ana Maria Benko-Iseppon
- Genetics Department, Universidade Federal de Pernambuco, Recife 50740-600, Pernambuco, Brazil
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Cellier G, Nordey T, Cortada L, Gauche M, Rasoamanana H, Yahiaoui N, Rébert E, Prior P, Chéron JJ, Poussier S, Pruvost O. Molecular Epidemiology of Ralstonia pseudosolanacearum Phylotype I Strains in the Southwest Indian Ocean Region and Their Relatedness to African Strains. PHYTOPATHOLOGY 2023; 113:423-435. [PMID: 36399027 DOI: 10.1094/phyto-09-22-0355-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The increasing requirement for developing tools enabling fine strain traceability responsible for epidemics is tightly linked with the need to understand factors shaping pathogen populations and their environmental interactions. Bacterial wilt caused by the Ralstonia solanacearum species complex (RSSC) is one of the most important plant diseases in tropical and subtropical regions. Sadly, little, outdated, or no information on its epidemiology is reported in the literature, although alarming outbreaks are regularly reported as disasters. A large set of phylotype I isolates (n = 2,608) was retrieved from diseased plants in fields across the Southwest Indian Ocean (SWIO) and Africa. This collection enabled further assessment of the epidemiological discriminating power of the previously published RS1-MLVA14 scheme. Thirteen markers were validated and characterized as not equally informative. Most had little infra-sequevar polymorphism, and their performance depended on the sequevar. Strong correlation was found with a previous multilocus sequence typing scheme. However, 2 to 3% of sequevars were not correctly assigned through endoglucanase gene sequence. Discriminant analysis of principal components (DAPC) revealed four groups with strong phylogenetic relatedness to sequevars 31, 33, and 18. Phylotype I-31 isolates were highly prevalent in the SWIO and Africa, but their dissemination pathways remain unclear. Tanzania and Mauritius showed the greatest diversity of RSSC strains, as the four DAPC groups were retrieved. Mauritius was the sole territory harboring a vast phylogenetic diversity and all DAPC groups. More research is still needed to understand the high prevalence of phylotype I-31 at such a large geographic scale.
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Affiliation(s)
- Gilles Cellier
- Anses, Plant Health Laboratory, Saint Pierre, Reunion Island
| | | | - Laura Cortada
- East Africa Hub, International Institute of Tropical Agriculture (IITA), Nairobi, Kenya
- Nematology Section, Department of Biology, Ghent University, Ghent, Belgium
| | - Mirana Gauche
- University of Reunion Island, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint Pierre, Reunion Island
- CIRAD, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint Pierre, Reunion Island
| | - Hasina Rasoamanana
- University of Reunion Island, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint Pierre, Reunion Island
- CIRAD, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint Pierre, Reunion Island
| | - Noura Yahiaoui
- Anses, Plant Health Laboratory, Saint Pierre, Reunion Island
- University of Reunion Island, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint Pierre, Reunion Island
- CIRAD, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint Pierre, Reunion Island
| | - Emeline Rébert
- University of Reunion Island, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint Pierre, Reunion Island
- CIRAD, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint Pierre, Reunion Island
| | - Philippe Prior
- INRAE, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint-Pierre, Reunion Island
| | - Jean Jacques Chéron
- CIRAD, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint Pierre, Reunion Island
| | - Stéphane Poussier
- University of Reunion Island, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint Pierre, Reunion Island
| | - Olivier Pruvost
- CIRAD, UMR Peuplements végétaux et bioagresseurs en milieu tropical, Saint Pierre, Reunion Island
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Wang Z, Zhang Y, Bo G, Zhang Y, Chen Y, Shen M, Zhang P, Li G, Zhou J, Li Z, Yang J. Ralstonia solanacearum Infection Disturbed the Microbiome Structure Throughout the Whole Tobacco Crop Niche as Well as the Nitrogen Metabolism in Soil. Front Bioeng Biotechnol 2022; 10:903555. [PMID: 35800334 PMCID: PMC9253565 DOI: 10.3389/fbioe.2022.903555] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 05/27/2022] [Indexed: 01/23/2023] Open
Abstract
Infections of Ralstonia solanacearum result in huge agricultural and economic losses. As known, the proposal of effective biological measures for the control of soil disease depends on the complex interactions between pathogens, soil microbiota and soil properties, which remains to be studied. Previous studies have shown that the phosphorus availability increased pathobiome abundance and infection of rhizosphere microbial networks by Ralstonia. Similarly, as a nutrient necessary for plant growth, nitrogen has also been suggested to be strongly associated with Ralstonia infection. To further reveal the relationship between soil nitrogen content, soil nitrogen metabolism and Ralstonia pathogens, we investigated the effects of R. solanacearum infection on the whole tobacco niche and its soil nitrogen metabolism. The results demonstrated that Ralstonia infection resulted in a reduction of the ammonium nitrogen in soil and the total nitrogen in plant. The microbes in rhizosphere and the plant’s endophytes were also significantly disturbed by the infection. Rhodanobacter which is involved in nitrogen metabolism significantly decreased. Moreover, the load of microbial nitrogen metabolism genes in the rhizosphere soil significantly varied after the infection, resulting in a stronger denitrification process in the diseased soil. These results suggest that the application management strategies of nitrogen fertilizing and a balanced regulation of the rhizosphere and the endophytic microbes could be promising strategies in the biological control of soil-borne secondary disasters.
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Affiliation(s)
- Zhaobao Wang
- Energy-Rich Compounds Production by Photosynthetic Carbon Fixation Research Center, Shandong Key Lab of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Yuzhen Zhang
- Energy-Rich Compounds Production by Photosynthetic Carbon Fixation Research Center, Shandong Key Lab of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Guodong Bo
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Yanping Zhang
- Energy-Rich Compounds Production by Photosynthetic Carbon Fixation Research Center, Shandong Key Lab of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Yu Chen
- Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao, China
| | - Minchong Shen
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Peng Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Guitong Li
- Energy-Rich Compounds Production by Photosynthetic Carbon Fixation Research Center, Shandong Key Lab of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Jie Zhou
- Energy-Rich Compounds Production by Photosynthetic Carbon Fixation Research Center, Shandong Key Lab of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Zhengfeng Li
- China Tobacco Yunnan Industrial Co., Ltd., Kunming, China
| | - Jianming Yang
- Energy-Rich Compounds Production by Photosynthetic Carbon Fixation Research Center, Shandong Key Lab of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
- *Correspondence: Jianming Yang,
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Rasoamanana H, Ravelomanantsoa S, Yahiaoui N, Dianzinga N, Rébert E, Gauche MM, Pecrix Y, Costet L, Rieux A, Prior P, Robène I, Cellier G, Guérin F, Poussier S. Contrasting genetic diversity and structure among Malagasy Ralstonia pseudosolanacearum phylotype I populations inferred from an optimized Multilocus Variable Number of Tandem Repeat Analysis scheme. PLoS One 2020; 15:e0242846. [PMID: 33290390 PMCID: PMC7723262 DOI: 10.1371/journal.pone.0242846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 11/10/2020] [Indexed: 11/18/2022] Open
Abstract
The Ralstonia solanacearum species complex (RSSC), composed of three species and four phylotypes, are globally distributed soil-borne bacteria with a very broad host range. In 2009, a devastating potato bacterial wilt outbreak was declared in the central highlands of Madagascar, which reduced the production of vegetable crops including potato, eggplant, tomato and pepper. A molecular epidemiology study of Malagasy RSSC strains carried out between 2013 and 2017 identified R. pseudosolanacearum (phylotypes I and III) and R. solanacearum (phylotype II). A previously published population biology analysis of phylotypes II and III using two MultiLocus Variable Number of Tandem Repeats Analysis (MLVA) schemes revealed an emergent epidemic phylotype II (sequevar 1) group and endemic phylotype III isolates. We developed an optimized MLVA scheme (RS1-MLVA14) to characterize phylotype I strains in Madagascar to understand their genetic diversity and structure. The collection included isolates from 16 fields of different Solanaceae species sampled in Analamanga and Itasy regions (highlands) in 2013 (123 strains) and in Atsinanana region (lowlands) in 2006 (25 strains). Thirty-one haplotypes were identified, two of them being particularly prevalent: MT007 (30.14%) and MT004 (16.44%) (sequevar 18). Genetic diversity analysis revealed a significant contrasting level of diversity according to elevation and sampling region. More diverse at low altitude than at high altitude, the Malagasy phylotype I isolates were structured in two clusters, probably resulting from different historical introductions. Interestingly, the most prevalent Malagasy phylotype I isolates were genetically distant from regional and worldwide isolates. In this work, we demonstrated that the RS1-MLVA14 scheme can resolve differences from regional to field scales and is thus suited for deciphering the epidemiology of phylotype I populations.
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Affiliation(s)
- Hasina Rasoamanana
- UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Université de La Réunion, Saint-Pierre, Réunion, France
| | - Santatra Ravelomanantsoa
- Centre National de la Recherche Appliquée au Développement Rural FOFIFA, Antananarivo, Madagascar
| | - Noura Yahiaoui
- UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Université de La Réunion, Saint-Pierre, Réunion, France
| | - Niry Dianzinga
- UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Université de La Réunion, Saint-Pierre, Réunion, France
| | - Emeline Rébert
- UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Université de La Réunion, Saint-Pierre, Réunion, France
| | - Miharisoa-Mirana Gauche
- UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Université de La Réunion, Saint-Pierre, Réunion, France
| | - Yann Pecrix
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement, UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Saint-Pierre, Réunion, France
| | - Laurent Costet
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement, UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Saint-Pierre, Réunion, France
| | - Adrien Rieux
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement, UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Saint-Pierre, Réunion, France
| | - Philippe Prior
- Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement, UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Saint-Pierre, Réunion, France
| | - Isabelle Robène
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement, UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Saint-Pierre, Réunion, France
| | - Gilles Cellier
- Anses - Plant Health Laboratory - Tropical Pests and Diseases Unit, Saint-Pierre, Réunion, France
| | - Fabien Guérin
- UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Université de La Réunion, Saint-Pierre, Réunion, France
| | - Stéphane Poussier
- UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical, Université de La Réunion, Saint-Pierre, Réunion, France
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