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Dapuliga CC, Claussen M, Schmidt S. First draft genome sequence of a Pectobacterium polaris strain isolated in South Africa from potato tuber affected by soft rot. Microbiol Resour Announc 2024; 13:e0069124. [PMID: 39248549 DOI: 10.1128/mra.00691-24] [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: 06/23/2024] [Accepted: 08/01/2024] [Indexed: 09/10/2024] Open
Abstract
A phytopathogenic strain of Pectobacterium polaris (designated SRB2) was isolated for the first time in South Africa from a potato tuber affected by soft rot. The draft genome of strain SRB2 encodes various plant cell wall-degrading enzymes and genes associated with biofilm formation and virulence. Antibiotic resistance genes were not detected.
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Affiliation(s)
- Christiana C Dapuliga
- Discipline of Microbiology, School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - Maike Claussen
- Discipline of Microbiology, School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - Stefan Schmidt
- Discipline of Microbiology, School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
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2
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Ma X, Zhang X, Stodghill P, Rioux R, Shrestha S, Babler B, Rivedal H, Frost K, Hao J, Secor G, Swingle B. Analysis of soft rot Pectobacteriaceae population diversity in US potato growing regions between 2015 and 2022. Front Microbiol 2024; 15:1403121. [PMID: 39351298 PMCID: PMC11439646 DOI: 10.3389/fmicb.2024.1403121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 08/21/2024] [Indexed: 10/04/2024] Open
Abstract
Introduction Soft rot Pectobacteriaceae (SRP) bacteria are globally dispersed pathogens that cause significant economic loss in potato and other crops. Our understanding of the SRP species diversity has expanded in recent years due to advances and adoption of whole-genome sequence technologies. There are currently 34 recognized SRP species that belong to the Dickeya and Pectobacterium genera. Methods We used whole-genome sequencing based analysis to describe the current distribution and epidemiology of SRP isolated from diseased potato samples obtained from commercial potato cropping systems in the United States. Our primary objectives in the present study were to: (1) identify the species of these SRP isolates recovered from potato samples across 14 states in the US, (2) describe the variation among SRP isolates from various US locations and track their temporal changes, and (3) evaluate the evolutionary relationships among these SRP isolates to deduce their source. We collected 118 SRP strains from diseased potato plants and tubers in 14 states between 2015 and 2022. Results We identified three Dickeya and eight Pectobacterium species from diseased potato samples. Dickeya dianthicola, Pectobacterium parmentieri, P. carotovorum, and P. versatile appeared to be the predominant species, constituting 83% of the isolates. Furthermore, all D. dianthicola strains studied here as well as 90% of US D. dianthicola isolates sequenced to date exhibit significant clonality. Discussion The prevalence of this specific group of D. dianthicola, temporally and geographically, aligns with the occurrence of blackleg and soft rot outbreaks in the northeastern US after 2014. The genomic diversity observed in P. parmentieri implies multiple introductions to the US from at least four distinct sources, earlier than the arrival of the predominant group of D. dianthicola. In contrast, P. carotovorum and P. versatile appear to be widespread, long-term endemic strains in the US.
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Affiliation(s)
- Xing Ma
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
| | - Xiuyan Zhang
- School of Food and Agriculture, University of Maine, Orono, ME, United States
| | - Paul Stodghill
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
- Emerging Pests and Pathogens Research Unit, United States Department of Agriculture-Agricultural Research Service, Robert W. Holley Center, Ithaca, NY, United States
| | - Renee Rioux
- Department of Plant Pathology, University of Wisconsin-Madison, Madison, WI, United States
| | - Smita Shrestha
- Department of Plant Pathology, University of Wisconsin-Madison, Madison, WI, United States
| | - Brooke Babler
- Wisconsin Seed Potato Certification Program, Department of Plant Pathology, University of Wisconsin-Madison, Middleton, WI, United States
| | - Hannah Rivedal
- Forage Seed and Cereal Research Unit, United States Department of Agriculture-Agricultural Research Service, Corvallis, OR, United States
| | - Kenneth Frost
- Department of Botany and Plant Pathology and Hermiston Agricultural Research and Extension Center, Oregon State University, Hermiston, OR, United States
| | - Jianjun Hao
- School of Food and Agriculture, University of Maine, Orono, ME, United States
| | - Gary Secor
- Department of Plant Pathology, North Dakota State University, Fargo, ND, United States
| | - Bryan Swingle
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
- Emerging Pests and Pathogens Research Unit, United States Department of Agriculture-Agricultural Research Service, Robert W. Holley Center, Ithaca, NY, United States
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Vasilyeva AA, Evseev PV, Ignatov AN, Dzhalilov FSU. Pectobacterium punjabense Causing Blackleg and Soft Rot of Potato: The First Report in the Russian Federation. PLANTS (BASEL, SWITZERLAND) 2024; 13:2144. [PMID: 39124263 PMCID: PMC11313954 DOI: 10.3390/plants13152144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/19/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024]
Abstract
Phytopathogenic bacteria of the genus Pectobacterium are responsible for several diseases that affect potato (Solanum tuberosum L.) production worldwide, including blackleg and tuber soft rot. These bacteria are highly diverse, with over 17 different species currently identified. However, some of the recently described species, such as Pectobacterium punjabense, are still poorly understood. In this study, we focused on P. punjabense isolates collected from diseased potato tubers in Russia in 2021. Whole-genome sequencing was used to characterise the genomic diversity of the pathogen and determine the biochemical profiles of the isolated bacteria. The ability of these isolates to cause soft rot symptoms was tested. A comparative assessment of the potential pathogenicity of the Pectobacterium isolates was conducted by infecting potato tubers and measuring the accumulation of biomass in a liquid medium during cultivation at different temperatures. A TaqMan qPCR assay was developed for the highly sensitive and specific characterisation of P. punjabense strains, which can be used in diagnostic systems. This is the first report on P. punjabense causing potato disease in the Russian Federation.
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Affiliation(s)
- Anna A. Vasilyeva
- Department of Plant Protection, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya Str. 49, 127434 Moscow, Russia; (P.V.E.); (A.N.I.)
| | - Peter V. Evseev
- Department of Plant Protection, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya Str. 49, 127434 Moscow, Russia; (P.V.E.); (A.N.I.)
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str. 16/10, 117997 Moscow, Russia
- Laboratory of Molecular Microbiology, Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Alexandr N. Ignatov
- Department of Plant Protection, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya Str. 49, 127434 Moscow, Russia; (P.V.E.); (A.N.I.)
- Agrobiotechnology Department, Agrarian and Technological Institute, RUDN University, Miklukho-Maklaya Str. 6, 117198 Moscow, Russia
| | - Fevzi S.-U. Dzhalilov
- Department of Plant Protection, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya Str. 49, 127434 Moscow, Russia; (P.V.E.); (A.N.I.)
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Tang WC, Wang LH, Chan JJ, Goh RP, Wu YF, Chu CC. Inter- and Intra-Specific Variations in Phenotypic Traits of Pectobacterium Strains Isolated from Diverse Eudicots and Monocots in Taiwan. PLANT DISEASE 2024; 108:2410-2421. [PMID: 38506909 DOI: 10.1094/pdis-10-23-2130-re] [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: 03/21/2024]
Abstract
Pectobacterium spp. are phytopathogenic bacteria whose phylogeny has been continuously revised throughout the years. Previous studies on Pectobacterium's phenotypic diversity often analyzed strains obtained from specific crops or adopted outdated Pectobacterium classification systems. Therefore, a current perspective on trait variations in Pectobacterium species or strains infecting more diverse plant species is limited. This study conducted phylogenetic and phenotypic analyses on strains isolated from eight eudicot and four monocot families in Taiwan. Phylogenetic analysis on 78 strains identified six recognized species, namely, P. brasiliense, P. aroidearum, P. actinidiae, P. colocasium, P. carotovorum, and P. versatile. Among these, the first two were the most predominant species. Patterns suggesting varying host preferences among bacterial species were detected; most P. aroidearum strains were isolated from monocots, whereas P. brasiliense and P. actinidiae tended to exhibit preferences for eudicots. Physiological tests and Biolog analyses conducted on representative strains of each species revealed great within-species phenotypic variations. Despite these strain-level variations, a combination of indole production and phosphatase activity tests was capable of distinguishing all representative strains of P. brasiliense from those of other identified species. Inoculation assays on potato, bok choy, calla lily, and onion showed inter- and intra-specific heterogeneities in the tested strains' maceration potentials. Virulence patterns across Pectobacterium species and strains differed depending on the inoculated host. Altogether, the findings from this work expand the understanding of Pectobacterium's phenotypic diversity and provide implications for pathogen identification and management.
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Affiliation(s)
- Wen-Chien Tang
- Department of Plant Pathology, National Chung Hsing University, Taichung City 40227, Taiwan
| | - Liang-Hsuan Wang
- Department of Plant Pathology, National Chung Hsing University, Taichung City 40227, Taiwan
| | - Jiun-Jie Chan
- Department of Plant Pathology, National Chung Hsing University, Taichung City 40227, Taiwan
| | - Reun-Ping Goh
- Department of Plant Pathology, National Chung Hsing University, Taichung City 40227, Taiwan
| | - Yea-Fang Wu
- Tainan District Agricultural Research and Extension Station, Ministry of Agriculture, Tainan 71246, Taiwan
| | - Chia-Ching Chu
- Department of Plant Pathology, National Chung Hsing University, Taichung City 40227, Taiwan
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Arizala D, Arif M. Impact of Homologous Recombination on Core Genome Evolution and Host Adaptation of Pectobacterium parmentieri. Genome Biol Evol 2024; 16:evae032. [PMID: 38385549 PMCID: PMC10946231 DOI: 10.1093/gbe/evae032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/02/2024] [Accepted: 02/11/2024] [Indexed: 02/23/2024] Open
Abstract
Homologous recombination is a major force mechanism driving bacterial evolution, host adaptability, and acquisition of novel virulence traits. Pectobacterium parmentieri is a plant bacterial pathogen distributed worldwide, primarily affecting potatoes, by causing soft rot and blackleg diseases. The goal of this investigation was to understand the impact of homologous recombination on the genomic evolution of P. parmentieri. Analysis of P. parmentieri genomes using Roary revealed a dynamic pan-genome with 3,742 core genes and over 55% accessory genome variability. Bayesian population structure analysis identified 7 lineages, indicating species heterogeneity. ClonalFrameML analysis displayed 5,125 recombination events, with the lineage 4 exhibiting the highest events. fastGEAR analysis identified 486 ancestral and 941 recent recombination events ranging from 43 bp to 119 kb and 36 bp to 13.96 kb, respectively, suggesting ongoing adaptation. Notably, 11% (412 genes) of the core genome underwent recent recombination, with lineage 1 as the main donor. The prevalence of recent recombination (double compared to ancient) events implies continuous adaptation, possibly driven by global potato trade. Recombination events were found in genes involved in vital cellular processes (DNA replication, DNA repair, RNA processing, homeostasis, and metabolism), pathogenicity determinants (type secretion systems, cell-wall degrading enzymes, iron scavengers, lipopolysaccharides (LPS), flagellum, etc.), antimicrobial compounds (phenazine and colicin) and even CRISPR-Cas genes. Overall, these results emphasize the potential role of homologous recombination in P. parmentieri's evolutionary dynamics, influencing host colonization, pathogenicity, adaptive immunity, and ecological fitness.
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Affiliation(s)
- Dario Arizala
- Department of Plant and Environmental Protection Sciences, University of Hawaii at Manoa, Honolulu, HI, USA
| | - Mohammad Arif
- Department of Plant and Environmental Protection Sciences, University of Hawaii at Manoa, Honolulu, HI, USA
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Mainello-Land AM, Bibi S, Gugino B, Bull CT. Multilocus sequence and phenotypic analysis of Pectobacterium and Dickeya type strains for identification of soft rot Pectobacteriaceae from symptomatic potato stems and tubers in Pennsylvania. Syst Appl Microbiol 2024; 47:126476. [PMID: 38113702 DOI: 10.1016/j.syapm.2023.126476] [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: 09/08/2023] [Revised: 11/13/2023] [Accepted: 11/24/2023] [Indexed: 12/21/2023]
Abstract
Outbreaks of potato blackleg and soft rot caused by Pectobacterium species and more recently Dickeya species across the U.S. mid-Atlantic region have caused yield loss due to poor emergence as well as losses from stem and tuber rot. To develop management strategies for soft rot diseases, we must first identify which members of the soft rot Pectobacteriaceae are present in regional potato plantings. However, the rapidly expanding number of soft rot Pectobacteriaceae species and the lack of readily available comparative data for type strains of Pectobacterium and Dickeya hinder quick identification. This manuscript provides a comparative analysis of soft rot Pectobacteriaceae and a comprehensive comparison of type strains from this group using rep-PCR, MLSA and 16S sequence analysis, as well as phenotypic and physiological analyses using Biolog GEN III plates. These data were used to identify isolates cultured from symptomatic potato stems collected between 2016 and 2018. The isolates were characterized for phenotypic traits and by sequence analysis to identify the bacteria from potatoes with blackleg and soft rot symptoms in Pennsylvania potato fields. In this survey, P. actinidiae, P. brasiliense, P. polonicum, P. polaris, P. punjabense, P. parmentieri, and P. versatile were identified from Pennsylvania for the first time. Importantly, the presence of P. actinidiae in Pennsylvania represents the first report of this organism in the U.S. As expected, P. carotorvorum and D. dianthicola were also isolated. In addition to a resource for future work studying the Dickeya and Pectobacterium associated with potato blackleg and soft rot, we provide recommendations for future surveys to monitor for quarantine or emerging soft rot Pectobacteriace regionally.
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Affiliation(s)
- Amanda M Mainello-Land
- Department of Plant Pathology and Environmental Microbiology, The Pennsylvania State University, University Park, PA 16802, USA
| | - Shaheen Bibi
- Department of Plant Pathology and Environmental Microbiology, The Pennsylvania State University, University Park, PA 16802, USA
| | - Beth Gugino
- Department of Plant Pathology and Environmental Microbiology, The Pennsylvania State University, University Park, PA 16802, USA
| | - Carolee T Bull
- Department of Plant Pathology and Environmental Microbiology, The Pennsylvania State University, University Park, PA 16802, USA; Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa.
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7
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Su Y, Li X, Li L, Lukianova A, Tokmakova A, Chen C, Fu L, Tian Y, Shi Y, Xie J, Miroshnikov KA, Yang J, Xie H. Occurrence, Characteristics, and qPCR-Based Identification of Pectobacterium versatile Causing Soft Rot of Chinese Cabbage in China. PLANT DISEASE 2023; 107:2751-2762. [PMID: 36973901 DOI: 10.1094/pdis-12-22-2770-re] [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: 06/18/2023]
Abstract
Pectobacterium is one of the most important genera of phytopathogenic bacteria. It can cause soft-rot diseases on a wide range of plant species across the world. In this study, three Pectobacterium strains (KC01, KC02, and KC03) were isolated from soft-rotted Chinese cabbage in Beijing, China. These three strains were identified as Pectobacterium versatile based on phylogenetic analysis of Pectobacterium 16S ribosomal RNA, pmrA, and 504 Pectobacterium core genes, as well as a genomic average nucleotide identity analysis. Their biochemical characteristics were found to be similar to the P. versatile type strain ICMP9168T but differed in response to citric acid, stachyose, D-glucuronic acid, dextrin, and N-acetyl-β-D-mannosamine. All of the tested P. versatile strains showed different carbohydrate utilization abilities compared with P. carotovorum and P. odoriferum, particularly in their ability to utilize D-arabitol, L-rhamnose, and L-serine. Under laboratory conditions, the maceration ability of P. versatile on Chinese cabbage was the highest at 28°C, compared with those at 13, 28, 23, and 33°C. Additionally, P. versatile could infect all of the 17 known Pectobacterium host plants, except for Welsh onion (Allium fistulosum). A SYBR Green quantitative PCR (qPCR) detection system was developed to distinguish P. versatile from other soft-rot bacteria based on the combined performance of melting curve (with a single melting peak at around 85°C) and fluorescence curve (with cycle threshold <30) when the bacterial genomic DNA concentration was in the range of 10 pg/µl to 10 ng/µl. This study is the first to report the presence of P. versatile on Chinese cabbage in China, as well as a specific and sensitive qPCR assay that can be used to quickly identify P. versatile. The work contributes to a better understanding of P. versatile and will facilitate the effective diagnosis of soft-rot disease, ultimately benefitting commercial crop production.
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Affiliation(s)
- Yanyan Su
- Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Xiaoying Li
- Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Lei Li
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Anna Lukianova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow 117997, Russia
| | - Anna Tokmakova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow 117997, Russia
| | - Changlong Chen
- Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Lu Fu
- Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Yu Tian
- Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Yanxia Shi
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jianbo Xie
- National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Konstantin A Miroshnikov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow 117997, Russia
| | - Jungang Yang
- Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Hua Xie
- Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
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Hong SM, Ten LN, Park KT, Back CG, Waleron M, Kang IK, Lee SY, Jung HY. Pectobacterium jejuense sp. nov. Isolated from Cucumber Stem Tissue. Curr Microbiol 2023; 80:308. [PMID: 37528256 DOI: 10.1007/s00284-023-03419-5] [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: 03/30/2023] [Accepted: 07/16/2023] [Indexed: 08/03/2023]
Abstract
A single Pectobacterium-like strain named 13-115T was isolated from a specimen of diseased cucumber stem tissue collected on Jeju Island, South Korea. The strain presented a rod-like shape and was negative for Gram staining. When grown on R2A medium at 25 °C, strain 13-115T formed round, convex and white colonies. This strain showed growth at temperatures ranging from 10 to 30 °C and tolerated a pH range of 6-9. The strain could also tolerate NaCl concentrations up to 5%. Analysis of the 16S rRNA gene sequence revealed that strain 13-115T exhibited similarity of over 99% with Pectobacterium brasiliense, P. carotovorum, P. polaris, and P. parvum. By conducting multilocus sequence analyses using dnaX, leuS, and recA genes, a separate phylogenetic lineage was discovered between strain 13-115T and other members of the genus Pectobacterium. Moreover, the strain showed relatively low in silico DNA-DNA hybridization (<60.6%) and average nucleotide identity (ANI) (<94.9%) values with recognized Pectobacterium species. The isolate has a genome size of 5,069,478 bp and a genomic G + C content of 52.04 mol%. Major fatty acids identified in the strain included C16:0 (28.99%), summed feature 3 (C16:1 ω7c and/or C16:1 ω6c; 28.85%), and C18:1 ω7c (19.01%). Pathogenicity assay confirmed that the novel strain induced soft rot symptoms in cucumber plants and Koch's postulates were fulfilled. Molecular analysis and phenotypic data indicated that strain 13-115T could be classified as a new species within the Pectobacterium genus, which has been named Pectobacterium jejuense. The type strain is 13-115T (= KCTC 92800T = JCM 35940T).
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Affiliation(s)
- Soo-Min Hong
- College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Leonid N Ten
- Institute of Plant Medicine, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Kyoung-Taek Park
- College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Chang-Gi Back
- National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju, 55365, Republic of Korea
| | - Malgorzata Waleron
- Intercollegiate Faculty of Biotechnology UG and MUG, 58 Abrahama Street, 80-307, Gdansk, Poland
| | - In-Kyu Kang
- College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Seung-Yeol Lee
- College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
- Institute of Plant Medicine, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Hee-Young Jung
- College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea.
- Institute of Plant Medicine, Kyungpook National University, Daegu, 41566, Republic of Korea.
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da Silva SP, da Silva JDF, da Costa CBL, da Silva PM, de Freitas AFS, da Silva CES, da Silva AR, de Oliveira AM, Sá RA, Peixoto AR, de Oliveira APS, Paiva PMG, Napoleão TH. Purification, Characterization, and Assessment of Antimicrobial Activity and Toxicity of Portulaca elatior Leaf Lectin (PeLL). Probiotics Antimicrob Proteins 2023; 15:287-299. [PMID: 34420188 DOI: 10.1007/s12602-021-09837-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2021] [Indexed: 10/20/2022]
Abstract
Lectins are carbohydrate-binding proteins with several bioactivities, including antimicrobial properties. Portulaca elatior is a species found at Brazilian Caatinga and data on the biochemical composition of this plant are scarce. The present work describes the purification of P. elatior leaf lectin (PeLL) as well as the assessment of its antimicrobial activity and toxicity. PeLL, isolated by chromatography on a chitin column, had native liquid charge and subunit composition evaluated by electrophoresis. Hemagglutinating activity (HA) of PeLL was determined in the presence of carbohydrates or divalent cations, as well as after heating and incubation at different pH values. Changes in the lectin conformation were monitored by evaluating intrinsic tryptophan fluorescence and using the extrinsic probe bis-ANS. Antimicrobial activity was evaluated against Pectobacterium strains and Candida species. The minimal inhibitory (MIC), bactericidal (MBC), and fungicidal (MFC) concentrations were determined. Finally, PeLL was evaluated for in vitro hemolytic activity in human erythrocytes and in vivo acute toxicity in mice (5 and 10 mg/kg b.w. per os). PeLL (pI 5.4; 20 kDa) had its HA was inhibited by mannose, galactose, Ca2+, Mg2+, and Mn2+. PeLL HA was resistant to heating at 100 °C, although conformational changes were detected. PeLL was more active in the acidic pH range, in which no conformational changes were observed. The lectin presented MIC and MBC of 0.185 and 0.74 μg/mL for all Pectobacterium strains, respectively; MIC of 1.48 μg/mL for C. albicans, C. tropicalis, and C. krusei; MIC and MFC of 0.74 and 2.96 μg/mL for C. parapsilosis. No hemolytic activity or signs of acute toxicity were observed in the mice. In conclusion, a new, low-toxic, and thermostable lectin was isolated from P. elatior leaves, being the first plant compound to show antibacterial activity against Pectobacterium.
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Affiliation(s)
- Suéllen Pedrosa da Silva
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
| | | | | | - Pollyanna Michelle da Silva
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
| | | | | | - Abdênego Rodrigues da Silva
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
| | - Alisson Macário de Oliveira
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
| | - Roberto Araújo Sá
- Centro Acadêmico Do Agreste, Universidade Federal de Pernambuco, Caruaru, Pernambuco, Brazil
| | - Ana Rosa Peixoto
- Departamento de Tecnologia E Ciências Sociais, Universidade Do Estado da Bahia, Juazeiro, Bahia, Brazil
| | | | - Patrícia Maria Guedes Paiva
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
| | - Thiago Henrique Napoleão
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
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Sharma A, Gupta AK, Devi B. Current trends in management of bacterial pathogens infecting plants. Antonie Van Leeuwenhoek 2023; 116:303-326. [PMID: 36683073 DOI: 10.1007/s10482-023-01809-0] [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: 09/08/2022] [Accepted: 01/08/2023] [Indexed: 01/24/2023]
Abstract
Plants are continuously challenged by different pathogenic microbes that reduce the quality and quantity of produce and therefore pose a serious threat to food security. Among them bacterial pathogens are known to cause disease outbreaks with devastating economic losses in temperate, tropical and subtropical regions throughout the world. Bacteria are structurally simple prokaryotic microorganisms and are diverse from a metabolic standpoint. Bacterial infection process mainly involves successful attachment or penetration by using extracellular enzymes, type secretion systems, toxins, growth regulators and by exploiting different molecules that modulate plant defence resulting in successful colonization. Theses bacterial pathogens are extremely difficult to control as they develop resistance to antibiotics. Therefore, attempts are made to search for innovative methods of disease management by the targeting bacterial virulence and manipulating the genes in host plants by exploiting genome editing methods. Here, we review the recent developments in bacterial disease management including the bioactive antimicrobial compounds, bacteriophage therapy, quorum-quenching mediated control, nanoparticles and CRISPR/Cas based genome editing techniques for bacterial disease management. Future research should focus on implementation of smart delivery systems and consumer acceptance of these innovative methods for sustainable disease management.
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Affiliation(s)
- Aditi Sharma
- College of Horticulture and Forestry, Thunag- Mandi, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh, 173 230, India.
| | - A K Gupta
- Department of Plant Pathology, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh, 173 230, India
| | - Banita Devi
- Department of Plant Pathology, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh, 173 230, India
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Cigna J, Robic K, Dewaegeneire P, Hélias V, Beury A, Faure D. Efficacy of Soft-Rot Disease Biocontrol Agents in the Inhibition of Production Field Pathogen Isolates. Microorganisms 2023; 11:microorganisms11020372. [PMID: 36838337 PMCID: PMC9961933 DOI: 10.3390/microorganisms11020372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/25/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
The Dickeya and Pectobacterium bacterial species cause blackleg and soft-rot diseases on potato plants and tubers. Prophylactic actions are essential to conserve a high quality of seed potato tubers. Biocontrol approaches are emerging, but we need to know how efficient biocontrol agents are when facing the natural diversity of pathogens. In this work, we sampled 16 production fields, which were excluded from the seed tuber certification scheme, as well as seven experimental parcels, which were planted with seed tubers from those production fields. We collected and characterized 669 Dickeya and Pectobacterium isolates, all characterized using nucleotide sequence of the gapA gene. This deep sampling effort highlighted eleven Dickeya and Pectobacterium species, including four dominant species namely D. solani, D. dianthicola, P. atrosepticum and P. parmentieri. Variations in the relative abundance of pathogens revealed different diversity patterns at a field or parcel level. The Dickeya-enriched patterns were maintained in parcels planted with rejected seed tubers, suggesting a vertical transmission of the pathogen consortium. Then, we retained 41 isolates representing the observed species diversity of pathogens and we tested each of them against six biocontrol agents. From this work, we confirmed the importance of prophylactic actions to discard contaminated seed tubers. We also identified a couple of biocontrol agents of the Pseudomonas genus that were efficient against a wide range of pathogen species.
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Affiliation(s)
- Jérémy Cigna
- French Federation of Seed Potato Growers (FN3PT/inov3PT), 75008 Paris, France
- Correspondence: (J.C.); (D.F.)
| | - Kévin Robic
- French Federation of Seed Potato Growers (FN3PT/inov3PT), 75008 Paris, France
- Institute for Integrative Biology of the Cell (I2BC), Paris-Saclay University, CEA, CNRS, 91190 Gif-sur-Yvette, France
| | | | - Valérie Hélias
- French Federation of Seed Potato Growers (FN3PT/inov3PT), 75008 Paris, France
| | - Amélie Beury
- French Federation of Seed Potato Growers (FN3PT/inov3PT), 75008 Paris, France
| | - Denis Faure
- Institute for Integrative Biology of the Cell (I2BC), Paris-Saclay University, CEA, CNRS, 91190 Gif-sur-Yvette, France
- Correspondence: (J.C.); (D.F.)
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12
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Loc M, Milošević D, Ivanović Ž, Ignjatov M, Budakov D, Grahovac J, Grahovac M. Genetic Diversity of Pectobacterium spp. on Potato in Serbia. Microorganisms 2022; 10:microorganisms10091840. [PMID: 36144442 PMCID: PMC9503840 DOI: 10.3390/microorganisms10091840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/28/2022] [Accepted: 09/07/2022] [Indexed: 11/17/2022] Open
Abstract
Pectobacterium is a diverse genus which comprises of multiple destructive bacterial species which cause soft rot/blackleg/wilt disease complex in a wide variety of crops by employing high levels of virulence factors. During the 2018, 2019 and 2020 potato growing seasons, numerous outbreaks of bacterial wilt, stem blackleg and tuber soft rot were recorded, and symptomatic plant samples from ten localities in the Province of Vojvodina (Serbia) were collected and analysed. Bacterial soft-rot pathogens were detected in 63 samples using genus and species-specific primers. Through 16S rRNA Sanger sequencing of 19 representative isolates, the identity of P. brasiliense (73.7%), P. punjabense (15.8%), and P. carotovorum (10.5%) species were revealed. To further validate the identification, genotypic profiling of Pectobacterium strains using rep-PCR (ERIC, BOX, REP) was conducted for 25 selected isolates and the phylogenetic assessment based on four selected housekeeping genes (gyrA, recA, rpoA, and rpoS). Physiological and biochemical properties were analysed using basic microbiological tests and VITEK® 2 GN card, and pathogenicity was confirmed on cv. VR808 and cv. Desiree potato tubers and plants. This study confirmed the distinctiveness of the newly described P. punjabense in Serbia as well as the high diversity of Pectobacterium brasiliense and Pectobacterium carotovorum species in Serbia.
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Affiliation(s)
- Marta Loc
- Department of Plant and Environmental Protection, Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia
| | - Dragana Milošević
- Laboratory for Seed Testing, Institute of Field and Vegetable Crops, Maksima Gorkog 30, 21101 Novi Sad, Serbia
| | - Žarko Ivanović
- Department of Plant Diseases, Institute for Plant Protection and Environment, Teodora Drajzera 9, 11040 Belgrade, Serbia
| | - Maja Ignjatov
- Laboratory for Seed Testing, Institute of Field and Vegetable Crops, Maksima Gorkog 30, 21101 Novi Sad, Serbia
| | - Dragana Budakov
- Department of Plant and Environmental Protection, Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia
| | - Jovana Grahovac
- Department of Biotechnology and Pharmaceutical Engineering, Faculty of Technology, University of Novi Sad, Bulevar cara Lazara 1, 21102 Novi Sad, Serbia
| | - Mila Grahovac
- Department of Plant and Environmental Protection, Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia
- Correspondence:
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13
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Smoktunowicz M, Jonca J, Stachowska A, May M, Waleron MM, Waleron M, Waleron K. The International Trade of Ware Vegetables and Orna-Mental Plants—An Underestimated Risk of Accelerated Spreading of Phytopathogenic Bacteria in the Era of Globalisation and Ongoing Climatic Changes. Pathogens 2022; 11:pathogens11070728. [PMID: 35889973 PMCID: PMC9319320 DOI: 10.3390/pathogens11070728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/18/2022] [Accepted: 06/22/2022] [Indexed: 11/17/2022] Open
Abstract
Bacteria of the genus Pectobacterium are globally occurring pathogens that infect a broad spectrum of plants. The plant cell wall degrading enzymes allow them to cause diseases like soft rot and blackleg. Worldwide trade and exchange of plant material together with the accompanying microorganisms contributed to the rapid spread and consequently the acquisition of new traits by bacteria. The 161 pectinolytic strains were isolated from symptomless vegetables and ornamental plants acquired from Polish and foreign local food markets. All strains except four Dickeya isolates were identified as belonging to the Pectobacterium genus by PCR with species-specific primers and recA gene sequencing. The newly isolated bacteria were assigned to eight species, P. versatile (50 strains), P. carotovorum (33), P. brasiliense (27), P. atrosepticum (19), P. parmentieri (12), P. polaris (11), P. parvum (3) and P. odoriferum (2). ERIC PCR and phenotypic characteristics revealed high heterogeneity among P. carotovorum, P. brasiliense and P. versatile isolates. Moreover, a subset of the newly isolated strains was characterised by high tolerance to changing environmental conditions such as salinity, pH and water availability. These bacteria can effectively macerate the tissues of various plants, including potato, chicory and orchid. Our results indicate that Pectobacterium strains isolated from internationally traded, symptomless vegetables and ornamental plants have high potential for adaptation to adverse environmental conditions and to infect various host plants. These features may contribute to the success of the genus Pectobacterium in spreading between different climatic zones and facilitate the colonisation of different ecological niches.
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Affiliation(s)
- Magdalena Smoktunowicz
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Medical University of Gdansk, 80-416 Gdansk, Poland;
| | - Joanna Jonca
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology of the University of Gdansk and the Medical University of Gdansk, 80-307 Gdansk, Poland; (J.J.); (A.S.); (M.M.); (M.M.W.)
| | - Aneta Stachowska
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology of the University of Gdansk and the Medical University of Gdansk, 80-307 Gdansk, Poland; (J.J.); (A.S.); (M.M.); (M.M.W.)
| | - Michal May
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology of the University of Gdansk and the Medical University of Gdansk, 80-307 Gdansk, Poland; (J.J.); (A.S.); (M.M.); (M.M.W.)
| | - Michal Mateusz Waleron
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology of the University of Gdansk and the Medical University of Gdansk, 80-307 Gdansk, Poland; (J.J.); (A.S.); (M.M.); (M.M.W.)
| | - Malgorzata Waleron
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology of the University of Gdansk and the Medical University of Gdansk, 80-307 Gdansk, Poland; (J.J.); (A.S.); (M.M.); (M.M.W.)
- Correspondence: (M.W.); (K.W.)
| | - Krzysztof Waleron
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Medical University of Gdansk, 80-416 Gdansk, Poland;
- Correspondence: (M.W.); (K.W.)
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14
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Wang J, Han W, Pirhonen M, Pan Y, Zhang D, Zhao D, Li Q, Cheng J, Yang Z, Zhu J. High-Quality Complete Genome Resource of Pectobacterium parvum Isolate FN20211 Causing Aerial Stem Rot of Potato. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2022; 35:488-491. [PMID: 35491949 DOI: 10.1094/mpmi-01-22-0009-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: 06/14/2023]
Affiliation(s)
- Jinhui Wang
- Hebei Agricultural University, College of Plant Protection, Baoding 071001, China
| | - Wanxin Han
- Hebei Agricultural University, College of Plant Protection, Baoding 071001, China
| | - Minna Pirhonen
- University of Helsinki, Department of Agricultural Sciences, P. O. Box 27, FI-00014 University of Helsinki, Finland
| | - Yang Pan
- Hebei Agricultural University, College of Plant Protection, Baoding 071001, China
| | - Dai Zhang
- Hebei Agricultural University, College of Plant Protection, Baoding 071001, China
| | - Dongmei Zhao
- Hebei Agricultural University, College of Plant Protection, Baoding 071001, China
| | - Qian Li
- Hebei Agricultural University, College of Plant Protection, Baoding 071001, China
| | - Jianing Cheng
- Hebei Agricultural University, Agricultural Business Training and Entrepreneurship Center, Baoding 071001, China
| | - Zhihui Yang
- Hebei Agricultural University, College of Plant Protection, Baoding 071001, China
| | - Jiehua Zhu
- Hebei Agricultural University, College of Plant Protection, Baoding 071001, China
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15
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Insights into complex infection by two Pectobacterium species causing potato blackleg and soft rot. Microbiol Res 2022; 261:127072. [DOI: 10.1016/j.micres.2022.127072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 04/02/2022] [Accepted: 05/11/2022] [Indexed: 11/19/2022]
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16
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Zhou J, Hu M, Hu A, Li C, Ren X, Tao M, Xue Y, Chen S, Tang C, Xu Y, Zhang L, Zhou X. Isolation and Genome Analysis of Pectobacterium colocasium sp. nov. and Pectobacterium aroidearum, Two New Pathogens of Taro. FRONTIERS IN PLANT SCIENCE 2022; 13:852750. [PMID: 35557713 PMCID: PMC9088014 DOI: 10.3389/fpls.2022.852750] [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: 01/11/2022] [Accepted: 03/28/2022] [Indexed: 06/15/2023]
Abstract
Bacterial soft rot is one of the most destructive diseases of taro (Colocasia esculenta) worldwide. In recent years, frequent outbreaks of soft rot disease have seriously affected taro production and became a major constraint to the development of taro planting in China. However, little is known about the causal agents of this disease, and the only reported pathogens are two Dickeya species and P. carotovorum. In this study, we report taro soft rot caused by two novel Pectobacterium strains, LJ1 and LJ2, isolated from taro corms in Ruyuan County, Shaoguan City, Guangdong Province, China. We showed that LJ1 and LJ2 fulfill Koch's postulates for taro soft rot. The two pathogens can infect taro both individually and simultaneously, and neither synergistic nor antagonistic interaction was observed between the two pathogens. Genome sequencing of the two strains indicated that LJ1 represents a novel species of the genus Pectobacterium, for which the name "Pectobacterium colocasium sp. nov." is proposed, while LJ2 belongs to Pectobacterium aroidearum. Pan-genome analysis revealed multiple pathogenicity-related differences between LJ1, LJ2, and other Pectobacterium species, including unique virulence factors, variation in the copy number and organization of Type III, IV, and VI secretion systems, and differential production of plant cell wall degrading enzymes. This study identifies two new soft rot Pectobacteriaceae (SRP) pathogens causing taro soft rot in China, reports a new case of co-infection of plant pathogens, and provides valuable resources for further investigation of the pathogenic mechanisms of SRP.
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Affiliation(s)
- Jianuan Zhou
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
| | - Ming Hu
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
| | - Anqun Hu
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
| | - Chuhao Li
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
| | - Xinyue Ren
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
| | - Min Tao
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
| | - Yang Xue
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
| | - Shanshan Chen
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
| | - Chongzhi Tang
- Guangdong Tianhe Agricultural Means of Production Co., Ltd., Guangzhou, China
| | - Yiwu Xu
- Guangdong Tianhe Agricultural Means of Production Co., Ltd., Guangzhou, China
- Qingyuan Agricultural Science and Technology Service Co., Ltd., Qingyuan, China
| | - Lianhui Zhang
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
| | - Xiaofan Zhou
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, China
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17
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Suárez MB, Diego M, Feria FJ, Martín-Robles MJ, Moreno S, Palomo JL. New PCR-Based Assay for the Identification of Pectobacterium carotovorum Causing Potato Soft Rot. PLANT DISEASE 2022; 106:676-684. [PMID: 34569833 DOI: 10.1094/pdis-08-21-1676-re] [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: 06/13/2023]
Abstract
Soft rot on potato tuber is a destructive disease caused by pathogenic bacterial species of the genera Pectobacterium and Dickeya. Accurate identification of the causal agent is necessary to ensure adequate disease management because different species may have distinct levels of aggressiveness and host range. One of the most important potato pathogens is Pectobacterium carotovorum, a highly heterogeneous species capable of infecting multiple hosts. The complexity of this species, until recently divided into several subspecies, has made it difficult to develop precise diagnostic tests. This study proposes a PCR assay based on the new pair of primers Pcar1F/R to facilitate the identification of potato isolates of P. carotovorum according to the most recent taxonomic description of this species. The new primers were designed on a variable segment of the 16S rRNA gene and the intergenic spacer region of available DNA sequences from classical and recently established species in the genus Pectobacterium. The results of the PCR analysis of genomic DNA from 32 Pectobacterium and Dickeya strains confirmed that the Pcar1F/R primers have sufficient nucleotide differences to discriminate between P. carotovorum and other Pectobacterium species associated with damage to potato crops, with the exception of Pectobacterium versatile, which improves the specificity of the currently available primers. The proposed assay was originally developed as a conventional PCR but was later adapted to the real-time PCR format for application in combination with the existing real-time PCR test for the potato-specific pathogen Pectobacterium parmentieri. This should be useful for the routine diagnosis of potato soft rot.
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Affiliation(s)
- M Belén Suárez
- Instituto de Biología Funcional y Genómica, Universidad de Salamanca, Consejo Superior de Investigaciones Científicas, 37007 Salamanca, Spain
- Departamento de Microbiología y Genética, Universidad de, Salamanca, 37007 Salamanca, Spain
| | - Marta Diego
- Instituto de Biología Funcional y Genómica, Universidad de Salamanca, Consejo Superior de Investigaciones Científicas, 37007 Salamanca, Spain
- Centro Regional de Diagnóstico (CRD), Junta de Castilla y León, 37340 Aldearrubia, Spain
| | - Francisco J Feria
- Instituto de Biología Funcional y Genómica, Universidad de Salamanca, Consejo Superior de Investigaciones Científicas, 37007 Salamanca, Spain
- Centro Regional de Diagnóstico (CRD), Junta de Castilla y León, 37340 Aldearrubia, Spain
| | - Manuel J Martín-Robles
- Centro Regional de Diagnóstico (CRD), Junta de Castilla y León, 37340 Aldearrubia, Spain
| | - Sergio Moreno
- Instituto de Biología Funcional y Genómica, Universidad de Salamanca, Consejo Superior de Investigaciones Científicas, 37007 Salamanca, Spain
| | - Jose Luis Palomo
- Centro Regional de Diagnóstico (CRD), Junta de Castilla y León, 37340 Aldearrubia, Spain
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18
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Arizala D, Dobhal S, Babler B, Crockford AB, Rioux RA, Alvarez AM, Arif M. Development of a multiplex TaqMan qPCR targeting unique genomic regions for the specific and sensitive detection of Pectobacterium species and P. parmentieri. J Appl Microbiol 2022; 132:3089-3110. [PMID: 35026058 DOI: 10.1111/jam.15447] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 12/13/2021] [Accepted: 01/06/2022] [Indexed: 11/26/2022]
Abstract
AIM The newly defined species P. parmentieri has emerged as an aggressive pathogen that causes soft rot and blackleg diseases on potato and has been widely disseminated across the globe, jeopardizing the productivity and potato food safety. The implementation of a fast and accurate detection tool is imperative to control, monitor and prevent further spread of these pathogens. The objective of this work was to develop a specific and sensitive multiplex TaqMan qPCR to detect P. parmentieri and distinguish it from all known Pectobacterium species. A universal internal control (UIC) was included to enhance the reliability of the assay. METHODS AND RESULTS A comparative genomics approach was used to identify O-acetyltransferase and the XRE family transcriptional regulator as specific targets for primers/probe design for the detection of the Pectobacterium genus and P. parmentieri, respectively. Specificity was assessed with 35 and 25 strains included inclusivity and exclusivity panels, respectively, isolated from different geographic locations and sources. The assay specifically detected all 35 strains of Pectobacterium sp. and all 15 P. parmentieri strains. No cross-reactivity was detected during assay validation. Our assay detected up to 10 fg genomic DNA and 1 CFU ml-1 bacterial culture. No change in the detection threshold (1 CFU ml-1 ) was observed in spiked assays after adding host tissue to the reactions. The assay was validated with naturally and artificially infected host tissues and soil rhizosphere samples. All infected plant samples containing the target pathogens were accurately amplified. CONCLUSION The presented multiplex TaqMan qPCR diagnostic assay is highly specific, sensitive, reliable for the detection of Pectobacterium species and P. parmentieri with no false positives or false negatives. SIGNIFICANCE AND IMPACT The developed assay can be adopted for multiple purposes such as seed certification programs, surveillance, biosecurity, microbial forensics, quarantine, border protection, inspections, and epidemiology.
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Affiliation(s)
- Dario Arizala
- Department of Plant and Environmental Protection Sciences, University of Hawaii at Manoa, Honolulu
| | - Shefali Dobhal
- Department of Plant and Environmental Protection Sciences, University of Hawaii at Manoa, Honolulu
| | - Brooke Babler
- Department of Plant Pathology, University of Wisconsin-Madison
| | | | - Renee A Rioux
- Department of Plant Pathology, University of Wisconsin-Madison
| | - Anne M Alvarez
- Department of Plant and Environmental Protection Sciences, University of Hawaii at Manoa, Honolulu
| | - Mohammad Arif
- Department of Plant and Environmental Protection Sciences, University of Hawaii at Manoa, Honolulu
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19
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Ge T, Jiang H, Tan EH, Johnson SB, Larkin RP, Charkowski AO, Secor G, Hao J. Pangenomic Analysis of Dickeya dianthicola Strains Related to the Outbreak of Blackleg and Soft Rot of Potato in the United States. PLANT DISEASE 2021; 105:3946-3955. [PMID: 34213964 DOI: 10.1094/pdis-03-21-0587-re] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Dickeya dianthicola has caused an outbreak of blackleg and soft rot of potato in the eastern half of the United States since 2015. To investigate genetic diversity of the pathogen, a comparative analysis was conducted on genomes of D. dianthicola strains. Whole genomes of 16 strains from the United States outbreak were assembled and compared with 16 previously sequenced genomes of D. dianthicola isolated from potato or carnation. Among the 32 strains, eight distinct clades were distinguished based on phylogenomic analysis. The outbreak strains were grouped into three clades, with the majority of the strains in clade I. Clade I strains were unique and homogeneous, suggesting a recent incursion of this strain into potato production from alternative hosts or environmental sources. The pangenome of the 32 strains contained 6,693 genes, 3,377 of which were core genes. By screening primary protein subunits associated with virulence from all U.S. strains, we found that many virulence-related gene clusters, such as plant cell wall degrading enzyme genes, flagellar and chemotaxis related genes, two-component regulatory genes, and type I/II/III secretion system genes, were highly conserved but that type IV and type VI secretion system genes varied. The clade I strains encoded two clusters of type IV secretion systems, whereas the clade II and III strains encoded only one cluster. Clade I and II strains encoded one more VgrG/PAAR spike protein than did clade III. Thus, we predicted that the presence of additional virulence-related genes may have enabled the unique clade I strain to become predominant in the U.S. outbreak.
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Affiliation(s)
- Tongling Ge
- School of Food and Agriculture, University of Maine, Orono, ME 04469
| | - He Jiang
- School of Food and Agriculture, University of Maine, Orono, ME 04469
| | - Ek Han Tan
- School of Biology and Ecology, University of Maine, Orono, ME 04469
| | | | - Robert P Larkin
- USDA-ARS, New England Plant, Soil, and Water Laboratory, University of Maine, Orono, ME 04469
| | - Amy O Charkowski
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO 80523
| | - Gary Secor
- Department of Plant Pathology, North Dakota State University, Fargo, ND58108
| | - Jianjun Hao
- School of Food and Agriculture, University of Maine, Orono, ME 04469
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20
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Ben Moussa H, Pédron J, Bertrand C, Hecquet A, Barny MA. Pectobacterium quasiaquaticum sp. nov., isolated from waterways. Int J Syst Evol Microbiol 2021; 71. [PMID: 34633924 DOI: 10.1099/ijsem.0.005042] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Through this study, we established the taxonomic status of seven strains belonging to the genus Pectobacterium (A477-S1-J17T, A398-S21-F17, A535-S3-A17, A411-S4-F17, A113-S21-F16, FL63-S17 and FL60-S17) collected from four different river streams and an artificial lake in south-east France between 2016 and 2017. Ecological surveys in rivers and lakes pointed out different repartition of strains belonging to this clade compared to the closest species, Pectobacterium aquaticum. The main phenotypic difference observed between these strains and the P. aquaticum type strain was strongly impaired growth with rhamnose as the sole carbon source. This correlates with three different forms of pseudogenization of the l-rhamnose/proton symporter gene rhaT in the genomes of strains belonging to this clade. Phylogenetic analysis using gapA gene sequences and multi locus sequence analysis of the core genome showed that these strains formed a distinct clade within the genus Pectobacterium closely related to P. aquaticum. Digital DNA-DNA hybridization (dDDH) and average nucleotide identity (ANI) values showed a clear discontinuity between the new clade and P. aquaticum. However, the calculated values are potentially consistent with either splitting or merging of this new clade with P. aquaticum. In support of the split, ANI coverages were higher within this new clade than between this new clade and P. aquaticum. The split is also consistent with the range of observed ANI or dDDH values that currently separate several accepted species within the genus Pectobacterium. On the basis of these data,strains A477-S1-J17T, A398-S21-F17, A535-S3-A17, A411-S4-F17, A113-S21-F16, FL63-S17 and FL60-S17 represent a novel species of the genus Pectobacterium, for which the name Pectobacterium quasiaquaticum sp. nov. is proposed. The type strain is A477-S1-J17T (=CFBP 8805T=LMG 32181T).
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Affiliation(s)
- Hajar Ben Moussa
- Sorbonne Université, INRAE, Institute of Ecology and Environmental Sciences-Paris, 4 place 7 Jussieu, F-75 252 Paris, France
| | - Jacques Pédron
- Sorbonne Université, INRAE, Institute of Ecology and Environmental Sciences-Paris, 4 place 7 Jussieu, F-75 252 Paris, France
| | - Claire Bertrand
- Sorbonne Université, INRAE, Institute of Ecology and Environmental Sciences-Paris, 4 place 7 Jussieu, F-75 252 Paris, France
| | - Amandine Hecquet
- Sorbonne Université, INRAE, Institute of Ecology and Environmental Sciences-Paris, 4 place 7 Jussieu, F-75 252 Paris, France
| | - Marie-Anne Barny
- Sorbonne Université, INRAE, Institute of Ecology and Environmental Sciences-Paris, 4 place 7 Jussieu, F-75 252 Paris, France
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21
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Chen C, Li X, Bo Z, Du W, Fu L, Tian Y, Cui S, Shi Y, Xie H. Occurrence, Characteristics, and PCR-Based Detection of Pectobacterium polaris Causing Soft Rot of Chinese Cabbage in China. PLANT DISEASE 2021; 105:2880-2887. [PMID: 33834854 DOI: 10.1094/pdis-12-20-2752-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Bacterial soft rot is an important disease of Chinese cabbage (Brassica rapa L. ssp. pekinensis) in China and many other countries. Four pectinolytic bacterial strains (WBC1, WBC6, WBC9, and WBC11) were isolated from soft-rotted Chinese cabbage in Beijing, China. Based on 16S rDNA and pmrA gene sequence analyses, multilocus sequence analysis (MLSA), and genomic average nucleotide identity (ANI) analysis, these four strains were identified as Pectobacterium polaris. This species, previously reported from potato in countries not including China, is a new soft rot pathogen of Chinese cabbage in China. Biochemical characteristics of these P. polaris strains tested by Biolog were mostly consistent with those of P. polaris NIBIO1006T. Their pathogenicity on Chinese cabbage is temperature dependent, with all four strains as well as the type strain exhibiting high pathogenicity at 23°C and 28°C. These four strains infected Lactuca sativa, Daucus carota, Solanum tuberosum, and Capsicum annuum by artificial inoculation. Specific polymerase chain reaction (PCR) and quantitative PCR (qPCR) primers for P. polaris were developed on the basis of its specific gene sequences (determined by genome comparison methods). Both PCR and qPCR detected not only genomic DNA of P. polaris but also the pathogen from diseased plant tissues even before external symptoms appeared. Their detection sensitivities were as low as 1 pg and 100 pg genomic DNA of P. polaris, respectively. To our knowledge, this study is the first to both report the emergence of P. polaris on Chinese cabbage in China and provide rapid and accurate PCR/qPCR-based detection systems specific for P. polaris.
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Affiliation(s)
- Changlong Chen
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences/Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, China
| | - Xiaoying Li
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences/Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, China
| | - Zijing Bo
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences/Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, China
- School of Life Sciences, University of Yantai, Shandong 264005, China
| | - Wenxiao Du
- School of Life Sciences, University of Yantai, Shandong 264005, China
| | - Lu Fu
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences/Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, China
| | - Yu Tian
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences/Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, China
| | - Shuang Cui
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences/Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, China
| | - Yanxia Shi
- School Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Hua Xie
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences/Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, China
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Ma X, Stodghill P, Gao M, Perry KL, Swingle B. Identification of Pectobacterium versatile Causing Blackleg of Potato in New York State. PLANT DISEASE 2021; 105:2585-2594. [PMID: 33404272 DOI: 10.1094/pdis-09-20-2089-re] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Soft rot bacteria classified in the Pectobacteriaceae (SRP), including Pectobacterium and Dickeya spp., are responsible for soft rot and blackleg diseases of potato. Since 2014, blackleg outbreaks caused by D. dianthicola have increased in the United States and Canada. Our previous study found that the most abundant causal organisms of blackleg disease in New York State were P. parmentieri and D. dianthicola, with the latter being the only Dickeya species reported. In the present study, we identified and characterized pathogenic SRP bacteria from 19 potato samples collected in New York State during the 2017 growing season. We used genome sequence comparison to determine the pathogens' species. We found eight P. versatile, one P. atrosepticum, two P. carotovorum, two P. parmentieri, and six D. dianthicola isolates in our 2017 SRP collection. This is the first time that P. versatile has been reported to cause potato blackleg disease in New York State. We determined the phylogenetic relationships between the SRP strains by using 151 single-copy orthologous gene sequences shared among the set of bacteria in our analysis, which provided better resolution than phylogenies constructed with the dnaX gene.
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Affiliation(s)
- Xing Ma
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, U.S.A
| | - Paul Stodghill
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, U.S.A
- Emerging Pests and Pathogens Research Unit, Robert W. Holley Center, U.S. Department of Agriculture Agricultural Research Service, Ithaca, NY 14853, U.S.A
| | - Miao Gao
- Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture, and Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Keith L Perry
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, U.S.A
| | - Bryan Swingle
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, U.S.A
- Emerging Pests and Pathogens Research Unit, Robert W. Holley Center, U.S. Department of Agriculture Agricultural Research Service, Ithaca, NY 14853, U.S.A
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Wang J, Han W, Li Z, Cheng J, Pan Y, Zhao D, Zhang D, Li Q, Yang Z, Zhu J. First Report of Pectobacterium polaris Causing Aerial Stem Rot of Potato in China. PLANT DISEASE 2021; 106:755. [PMID: 34410861 DOI: 10.1094/pdis-06-21-1269-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In July 2020, potato plants (cv. Xisen 6) showing characteristic symptoms of aerial stem rot were observed in a field in Fengning Manchu Autonomous County, Chengde, Hebei Province (northern China). The disease incidence in that field (5 ha in size) was more than 50%. Aerial stem rot of potato has increased in prevalence over recent years in Chengde, it can cause significant yield loss on susceptible cultivars such as Xisen 6 and Huangxin 226. Affected stem (light brown and water-soaked stem sections) pieces ca. 0.5 cm in length were surface-sterilized by dipping them in 75% ethanol for one min and then three successive rinses with sterile distilled water. Then, the tissues were soaked in 200 µl 0.9% saline for 20 min. Aliquots (20 μl) of three tenfold dilutions of the tissue specimen soaking solution were plated onto the crystal violet pectate (CVP) medium. The CVP plates were incubated at 28°C for 48 h. Colonies producing pits were restreaked and purified on Luria-Bertani (LB) agar plates. The bacterial gDNA was extracted using the EasyPure Bacteria Genomic DNA Kit (TransGen Biotech, Beijing, China). The 16S rDNA region was amplified by PCR using the universal primers 27F/1492R (Weisburg et al. 1991) and sequenced. Results of the Blastn analysis of the 16S rDNA amplicons (MZ348607, MZ348608) suggested that the isolates FN20211 and FN20222 belonged to the genus Pectobacterium. Housekeeping genes including acnA, gapA, icdA, mdh, proA and rpoS were also amplified using a set of primers (Ma et al. 2007; Waleron et al. 2008) followed by sequencing (MZ356250-MZ356261). To determine the species of the stem rot Pectobacterium isolates, multi-locus sequence analysis (MLSA) was performed with six housekeeping genes, and phylogenetic tree was reconstructed using RAxML (github.com/stamatak/standard-RAxML). No sequence variation was observed at any MLSA locus between FN20211 and FN20222. The result of phylogenetic analysis showed that the isolates clustered with P. polaris type strain NIBIO1006T, which was isolated from potato (Dees et al. 2017). And the concatenated sequence of the six loci of isolate FN20211/FN20222 is 100% identical to those of the strains PZ1 (CP046377.1) and WBC1 (GCF_011378945.1), which were isolated from potato in South Korea and from Chinese cabbage in China, respectively. Potato seedlings (cv. Xisen 6 and Favorita) were inoculated with the isolates FN20211 and FN20222 by injecting 100 µl of bacterial suspensions (108 CFU·mL-1) into the upper parts of the stems of potato plants, or injected with 100 µl of 0.9% saline as control. The seedlings were grown at 25°C and 50% relative humidity. Three days after inoculation, only the bacteria-inoculated seedlings showed disease symptoms resembling to those observed in the field. Bacterial colonies were obtained from the infected stems and were identified using the same PCR primers as described above. Therefore, P. polaris isolates FN20211 and FN20222 fulfill Koch's postulates for aerial stem rot of potato. P. polaris causing blackleg and soft rot on potato plants has been reported in European countries including Netherlands, Norway (Dees et al. 2017) and Poland (Waleron et al. 2019), and also in Pakistan (Sarfraz et al. 2019) and Russia (Voronina et al. 2021). To our knowledge, this is the first report of P. polaris causing aerial stem rot of potato in China. The stem rot poses a significant threat to the local potato industry, and further research on epidemiology and disease management options is needed.
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Affiliation(s)
- Jinhui Wang
- Hebei Agricultural University, 74562, College of Plant Protection, Baoding, Hebei, China;
| | - Wanxin Han
- Hebei Agricultural University, 74562, College of Plant Protection, Baoding, Hebei, China;
| | - Zheng Li
- Hebei Agricultural University, 74562, College of Plant Protection, Baoding, Hebei, China;
| | - Jianing Cheng
- Hebei Agricultural University, 74562, Agricultural Business Training and Entrepreneurship Center, Baoding, Hebei, China;
| | - Yang Pan
- Hebei Agricultural University, 74562, College of Plant Protection, Baoding, Hebei, China;
| | - Dongmei Zhao
- Hebei Agricultural University, 74562, College of Plant Protection, Baoding, Hebei, China;
| | - Dai Zhang
- Hebei Agricultural University, 74562, College of Plant Protection, Baoding, Hebei, China;
| | - Qian Li
- Hebei Agricultural University, 74562, College of Plant Protection, Baoding, Hebei, China;
| | - Zhihui Yang
- Hebei Agricultural University, 74562, College of Plant Protection, Baoding, Hebei, China
- Hebei Agricultural University, 74562, Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, Hebei, China;
| | - Jiehua Zhu
- Hebei Agricultural University, 74562, College of Plant Protection, Baoding, Hebei, China
- Hebei Agricultural University, 74562, Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, Hebei, China;
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Species of Dickeya and Pectobacterium Isolated during an Outbreak of Blackleg and Soft Rot of Potato in Northeastern and North Central United States. Microorganisms 2021; 9:microorganisms9081733. [PMID: 34442812 PMCID: PMC8401272 DOI: 10.3390/microorganisms9081733] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/09/2021] [Accepted: 08/11/2021] [Indexed: 12/04/2022] Open
Abstract
An outbreak of bacterial soft rot and blackleg of potato has occurred since 2014 with the epicenter being in the northeastern region of the United States. Multiple species of Pectobacterium and Dickeya are causal agents, resulting in losses to commercial and seed potato production over the past decade in the Northeastern and North Central United States. To clarify the pathogen present at the outset of the epidemic in 2015 and 2016, a phylogenetic study was made of 121 pectolytic soft rot bacteria isolated from symptomatic potato; also included were 27 type strains of Dickeya and Pectobacterium species, and 47 historic reference strains. Phylogenetic trees constructed based on multilocus sequence alignments of concatenated dnaJ, dnaX and gyrB fragments revealed the epidemic isolates to cluster with type strains of D. chrysanthemi, D. dianthicola, D. dadantii, P. atrosepticum, P. brasiliense, P. carotovorum, P. parmentieri, P. polaris, P. punjabense, and P. versatile. Genetic diversity within D. dianthicola strains was low, with one sequence type (ST1) identified in 17 of 19 strains. Pectobacterium parmentieri was more diverse, with ten sequence types detected among 37 of the 2015–2016 strains. This study can aid in monitoring future shifts in potato soft rot pathogens within the U.S. and inform strategies for disease management.
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25
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Xu P, Wang H, Qin C, Li Z, Lin C, Liu W, Miao W. Analysis of the Taxonomy and Pathogenic Factors of Pectobacterium aroidearum L6 Using Whole-Genome Sequencing and Comparative Genomics. Front Microbiol 2021; 12:679102. [PMID: 34276610 PMCID: PMC8282894 DOI: 10.3389/fmicb.2021.679102] [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: 03/22/2021] [Accepted: 06/07/2021] [Indexed: 11/24/2022] Open
Abstract
Soft rot pectobacteria are devastating plant pathogens with a global distribution and a broad host range. Pectobacterium aroidearum L6, previously isolated from leaves of Syngonium podophyllum, is a pectolytic bacterial pathogen that causes typical soft rot on S. podophyllum. There is a shortage for genome data of P. aroidearum, which seriously hinders research on classification and pathogenesis of Pectobacterium. We present here the complete genome sequence of P. aroidearum L6. The L6 strain carries a single 4,995,896-bp chromosome with 53.10% G + C content and harbors 4,306 predicted protein-coding genes. We estimated in silico DNA-DNA hybridization and average nucleotide identity values in combination with the whole-genome-based phylogeny from 19 Pectobacterium strains including P. aroidearum L6. The results showed that L6 and PC1 formed a population distinct from other populations of the Pectobacterium genus. Phylogenetic analysis based on 16S rRNA and genome sequences showed a close evolutionary relationship among Pectobacterium species. Overall, evolutionary analysis showed that L6 was in the same branch with PC1. In comparison with 18 Pectobacterium spp. reference pathogens, strain L6 had 2,712 gene families, among which 1,632 gene families were identified as orthologous to those strains, as well as 1 putative unique gene family. We discovered 478 genes, 10.4% of the total of predicted genes, that were potentially related to pathogenesis using the Virulence Factors of Pathogenic Bacteria database. A total of 25 genes were related to toxins, 35 encoded plant cell-wall degrading enzymes, and 122 were involved in secretion systems. This study provides a foundation for a better understanding of the genomic structure of P. aroidearum and particularly offers information for the discovery of potential pathogenic factors and the development of more effective strategies against this pathogen.
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Affiliation(s)
- Peidong Xu
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, China
- School of Life Sciences, Hainan University, Haikou, China
| | - Huanwei Wang
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, China
| | - Chunxiu Qin
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, China
| | - Zengping Li
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, China
| | - Chunhua Lin
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, China
| | - Wenbo Liu
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, China
| | - Weiguo Miao
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, China
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26
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Liang KYH, Orata FD, Boucher YF, Case RJ. Roseobacters in a Sea of Poly- and Paraphyly: Whole Genome-Based Taxonomy of the Family Rhodobacteraceae and the Proposal for the Split of the "Roseobacter Clade" Into a Novel Family, Roseobacteraceae fam. nov. Front Microbiol 2021; 12:683109. [PMID: 34248901 PMCID: PMC8267831 DOI: 10.3389/fmicb.2021.683109] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 05/27/2021] [Indexed: 11/13/2022] Open
Abstract
The family Rhodobacteraceae consists of alphaproteobacteria that are metabolically, phenotypically, and ecologically diverse. It includes the roseobacter clade, an informal designation, representing one of the most abundant groups of marine bacteria. The rapid pace of discovery of novel roseobacters in the last three decades meant that the best practice for taxonomic classification, a polyphasic approach utilizing phenotypic, genotypic, and phylogenetic characteristics, was not always followed. Early efforts for classification relied heavily on 16S rRNA gene sequence similarity and resulted in numerous taxonomic inconsistencies, with several poly- and paraphyletic genera within this family. Next-generation sequencing technologies have allowed whole-genome sequences to be obtained for most type strains, making a revision of their taxonomy possible. In this study, we performed whole-genome phylogenetic and genotypic analyses combined with a meta-analysis of phenotypic data to review taxonomic classifications of 331 type strains (under 119 genera) within the Rhodobacteraceae family. Representatives of the roseobacter clade not only have different environmental adaptions from other Rhodobacteraceae isolates but were also found to be distinct based on genomic, phylogenetic, and in silico-predicted phenotypic data. As such, we propose to move this group of bacteria into a new family, Roseobacteraceae fam. nov. In total, reclassifications resulted to 327 species and 128 genera, suggesting that misidentification is more problematic at the genus than species level. By resolving taxonomic inconsistencies of type strains within this family, we have established a set of coherent criteria based on whole-genome-based analyses that will help guide future taxonomic efforts and prevent the propagation of errors.
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Affiliation(s)
- Kevin Y H Liang
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Fabini D Orata
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Yann F Boucher
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada.,Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore.,Saw Swee Hock School of Public Health, National University Singapore, Singapore, Singapore
| | - Rebecca J Case
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada.,Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
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27
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Bugaeva EN, Voronina MV, Vasiliev DM, Lukianova AA, Landyshev NN, Ignatov AN, Miroshnikov KA. Use of a Specific Phage Cocktail for Soft Rot Control on Ware Potatoes: A Case Study. Viruses 2021; 13:1095. [PMID: 34201375 PMCID: PMC8229397 DOI: 10.3390/v13061095] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 05/31/2021] [Accepted: 06/04/2021] [Indexed: 01/15/2023] Open
Abstract
Using bacteriophages (bacterial viruses) to control pathogenic bacteria is a promising approach in horticulture. However, the application of this strategy in real conditions requires compliance with particular technological and environmental restraints. The presented paper concerns the process of phage selection to create a cocktail that is efficient against the circulating causal agents of potato soft rot. The resulting phage cocktail causes a complete lysis of a mixture of circulating pectobacterial strains in vitro. In the context of being used to treat ware potatoes during off-season storage, the protocol of phage application via the humidity maintenance system was designed. The phage cocktail was shown to reduce the population of Pectobacterium spp. 10-12-fold, achieving a population that was below a symptomatic threshold.
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Affiliation(s)
- Eugenia N. Bugaeva
- Research Center “PhytoEngineering” Ltd., 141880 Rogachevo, Moscow Region, Russia; (E.N.B.); (M.V.V.); (D.M.V.); (A.N.I.)
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str., 16/10, 117997 Moscow, Russia; (A.A.L.); (N.N.L.)
| | - Maya V. Voronina
- Research Center “PhytoEngineering” Ltd., 141880 Rogachevo, Moscow Region, Russia; (E.N.B.); (M.V.V.); (D.M.V.); (A.N.I.)
| | - Dmitry M. Vasiliev
- Research Center “PhytoEngineering” Ltd., 141880 Rogachevo, Moscow Region, Russia; (E.N.B.); (M.V.V.); (D.M.V.); (A.N.I.)
| | - Anna A. Lukianova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str., 16/10, 117997 Moscow, Russia; (A.A.L.); (N.N.L.)
- Department of Biology, Lomonosov Moscow State University, Leninskie gory, 1, bldg. 12, 119234 Moscow, Russia
| | - Nikolay N. Landyshev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str., 16/10, 117997 Moscow, Russia; (A.A.L.); (N.N.L.)
- Institute of Medicine, RUDN University, Miklukho-Maklaya Str., 8, 117198 Moscow, Russia
| | - Alexander N. Ignatov
- Research Center “PhytoEngineering” Ltd., 141880 Rogachevo, Moscow Region, Russia; (E.N.B.); (M.V.V.); (D.M.V.); (A.N.I.)
- Agrobiotechnology Department, Agrarian and Technological Institute, RUDN University, Miklukho-Maklaya Str., 6, 117198 Moscow, Russia
| | - Konstantin A. Miroshnikov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str., 16/10, 117997 Moscow, Russia; (A.A.L.); (N.N.L.)
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Genome-Wide Analyses of the Temperature-Responsive Genetic Loci of the Pectinolytic Plant Pathogenic Pectobacterium atrosepticum. Int J Mol Sci 2021; 22:ijms22094839. [PMID: 34063632 PMCID: PMC8125463 DOI: 10.3390/ijms22094839] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 12/12/2022] Open
Abstract
Temperature is one of the critical factors affecting gene expression in bacteria. Despite the general interest in the link between bacterial phenotypes and environmental temperature, little is known about temperature-dependent gene expression in plant pathogenic Pectobacterium atrosepticum, a causative agent of potato blackleg and tuber soft rot worldwide. In this study, twenty-nine P. atrosepticum SCRI1043 thermoregulated genes were identified using Tn5-based transposon mutagenesis coupled with an inducible promotorless gusA gene as a reporter. From the pool of 29 genes, 14 were up-regulated at 18 °C, whereas 15 other genes were up-regulated at 28 °C. Among the thermoregulated loci, genes involved in primary bacterial metabolism, membrane-related proteins, fitness-corresponding factors, and several hypothetical proteins were found. The Tn5 mutants were tested for their pathogenicity in planta and for features that are likely to remain important for the pathogen to succeed in the (plant) environment. Five Tn5 mutants expressed visible phenotypes differentiating these mutants from the phenotype of the SCRI1043 wild-type strain. The gene disruptions in the Tn5 transposon mutants caused alterations in bacterial generation time, ability to form a biofilm, production of lipopolysaccharides, and virulence on potato tuber slices. The consequences of environmental temperature on the ability of P. atrosepticum to cause disease symptoms in potato are discussed.
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29
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Lu Q, Yan F, Liu Y, Li Q, Yang M, Liu P. Comparative Genomic Analyses Reveal Functional Insights Into Key Determinants of the Pathogenesis of Pectobacterium actinidiae in Kiwifruit. PHYTOPATHOLOGY 2021; 111:789-798. [PMID: 33245255 DOI: 10.1094/phyto-07-20-0287-r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The Gram-negative bacterial species Pectobacterium actinidiae causes summer canker in kiwifruit plants. However, little is known about its virulence factors and mechanisms of genetic adaptation. We aimed to identify the key determinants that control the virulence of P. actinidiae in kiwifruit by genomic and functional analyses. Analysis of four P. actinidiae isolates indicated low genetic variability with an average of 98.7% genome-level sequence similarity and 82% shared protein-coding gene content. Phylogenetic analysis, based on both bulk single nucleotide polymorphisms (SNPs) and single-copy genes, revealed that P. actinidiae strains cluster into a single clade, which is closely related to the clades of P. odoriferum (species with a completely different host range). Through comparison between these two clades of strains, 746 unique core orthologs/genes were clustered in the clades of P. actinidiae, especially key virulence determinants involved in the biosynthesis of secretion systems (type III, IV, and VI), iron, flagellar structure, and the quorum-sensing system. Our results provide insights into the pathogenomics underlying the genetic diversification and evolution of pathogenicity in P. actinidiae species.
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Affiliation(s)
- Qi Lu
- School of Horticulture, Anhui Agricultural University, Hefei 230036, People's Republic of China
| | - Fuhua Yan
- Lishui Academy of Agricultural and Forestry Sciences, Lishui 323000, People's Republic of China
| | - Yuanyuan Liu
- School of Horticulture, Anhui Agricultural University, Hefei 230036, People's Republic of China
| | - Qiaohong Li
- Kiwifruit Breeding and Utilization Key Laboratory, Sichuan Provincial Academy of Natural Resource Sciences, Chengdu 610015, People's Republic of China
| | - Meng Yang
- School of Horticulture, Hebei Agricultural University, Baoding 071001, People's Republic of China
| | - Pu Liu
- School of Horticulture, Anhui Agricultural University, Hefei 230036, People's Republic of China
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30
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European Population of Pectobacterium punjabense: Genomic Diversity, Tuber Maceration Capacity and a Detection Tool for This Rarely Occurring Potato Pathogen. Microorganisms 2021; 9:microorganisms9040781. [PMID: 33917923 PMCID: PMC8068253 DOI: 10.3390/microorganisms9040781] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/02/2021] [Accepted: 04/06/2021] [Indexed: 11/16/2022] Open
Abstract
Enterobacteria belonging to the Pectobacterium and Dickeya genera are responsible for soft rot and blackleg diseases occurring in many crops around the world. Since 2016, the number of described species has more than doubled. However, some new species, such as Pectobacterium punjabense, are often poorly characterized, and little is known about their genomic and phenotypic variation. Here, we explored several European culture collections and identified seven strains of P. punjabense. All were collected from potato blackleg symptoms, sometimes from a long time ago, i.e., the IFB5596 strain isolated almost 25 years ago. We showed that this species remains rare, with less than 0.24% of P. punjabense strains identified among pectinolytic bacteria present in the surveyed collections. The analysis of the genomic diversity revealed the non-clonal character of P. punjabense species. Furthermore, the strains showed aggressiveness differences. Finally, a qPCR Taqman assay was developed for rapid and specific strain characterization and for use in diagnostic programs.
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31
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Biocontrol of Soft Rot Caused by Pectobacterium odoriferum with Bacteriophage phiPccP-1 in Kimchi Cabbage. Microorganisms 2021; 9:microorganisms9040779. [PMID: 33917817 PMCID: PMC8068257 DOI: 10.3390/microorganisms9040779] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/02/2021] [Accepted: 04/06/2021] [Indexed: 11/17/2022] Open
Abstract
Pectobacterium odoriferum has recently emerged as a widely infective and destructive pathogen causing soft-rot disease in various vegetables. Bacteriophage phiPccP-1 isolated from Pyeongchang, South Korea, showed lytic activity against P. odoriferum Pco14 and two other Pectobacterium species. The transmission electron microscopy and genome phylograms revealed that phiPccP-1 belongs to the Unyawovirus genus, Studiervirinae subfamily of the Autographivirinae family. Genome comparison showed that its 40,487 bp double-stranded DNA genome shares significant similarity with Pectobacterium phage DU_PP_II with the identity reaching 98% of the genome. The phiPccP-1 application significantly inhibited the development of soft-rot disease in the mature leaves of the harvested Kimchi cabbage up to 48 h after Pco14 inoculation compared to the untreated leaves, suggesting that phiPccP-1 can protect Kimchi cabbage from soft-rot disease after harvest. Remarkably, bioassays with phiPccP-1 in Kimchi cabbage seedlings grown in the growth chamber successfully demonstrated its prophylactic and therapeutic potential in the control of bacterial soft-rot disease in Kimchi cabbage. These results indicate that bacteriophage phiPccP-1 can be used as a potential biological agent for controlling soft rot disease in Kimchi cabbage.
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Voronina MV, Lukianova AA, Shneider MM, Korzhenkov AA, Toschakov SV, Miroshnikov KA, Vasiliev DM, Ignatov A. First Report of Pectobacterium polaris Causing Soft Rot and Black Leg of Potato in Russia. PLANT DISEASE 2021; 105:1851. [PMID: 33496602 DOI: 10.1094/pdis-09-20-1864-pdn] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Blackleg and soft rot of potato (Solanum tuberosum) were monitored in the Central European part of Russia within a period of 2012- 2019. Symptoms included decay of tubers, blackening of stem vascular bundles, and partial yellowing of leaves. The disease causes serious potato yield losses in the field and storage. Pectobacterium parmentieri, P. brasiliense, P. versatile (syn. Ca. Pectobacterium maceratum), P. carotovorum, P. atrosepticum, Dickeya dianthicola, and D. solani are considered as main causal agents of soft rot and blackleg disease in Russia (Voronina et al. 2019, Ngoc Ha et al., 2019, Shirshikov et al. 2018, Kornev et al. 2012). Potato plant samples collected in commercial fields in routine plant health assay were used for bacteria isolation on crystal violet pectate agar (CVP) (Helias et al. 2012) as described previously (Voronina et al. 2019). Bacterial colonies producing pitting on CVP were re-isolated and purified on nutrient broth yeast extract medium. DNA of bacterial isolates was extracted, and polymerase chain reaction (PCR) amplifications were performed using gapA primers (Cigna et al. 2017) followed by sequencing. DNA sequence alignment showed that the isolates F099, F100, F106, F109, and F118 were identical (deposited as part of NCBI Ref.Seq. for F109 NZ_RRYS01000004.1, locus KHDHEBDM_RS06360) and grouped together with the type strain Pectobacterium polaris NIBIO1006T (CP017481), a new species described as a potato pathogen (Dees et al. 2017). These strains were negative in diagnostic PCR assays using specific primers Y45/Y46 for the detection of P. atrosepticum, Br1f and L1r for P. brasiliense (Duarte et al. 2004), and ADE1/ADE2 for Dickeya sp. (Nassar et al. 1996). To further validate the identification, strain F109 of P. polaris was selected for genome sequencing. The genome of P. polaris strain F109, (NCBI Reference Sequence NZ_RRYS00000000.1) reveals >99% sequence similarity with type strain P. polaris IPO_1606 (GenBank accession GCA_902143345.1). The strain F109 was deposited to All-Russian Collection of Microorganisms under number VKM V-3420. Thus, the characterization of five isolates provided evidence that a previously unreported pathogen was present in the surveyed fields. The isolates were uniform in genetic and physiological properties; they were gram negative, facultative anaerobes with pectinolytic activity, negative for oxidase, urease, indole production, gelatin liquefaction. All isolates were catalase positive, produced acid from lactose, rhamnose, saccharose, xylose, and trehalose, and were tolerant to 5% NaCl, unable to utilize malonate and citrate. All the isolates grew at 37°C. All isolates caused soft rot symptoms on 10 inoculated potato tubers. They produced typical black leg rot symptoms in young potato plants inoculated with 107 CFU/ml of the pathogen by stem injection and incubated at 25°C for 48 h. The bacteria were re-isolated successfully from symptomatic potato and pathogen confirmed by gapA sequencing to complete Koch's postulates. To our knowledge, this is the first report of blackleg and soft rot caused by P. polaris on potato in the Russian Federation. According to the data of commercial diagnostic laboratory "PhytoEngineering" (Moscow region), P. polaris occurred in 5% potato seed stocks harvested in 2017-2019 in the Moscow region. This finding may indicate that new Pectobacterium strains have adapted to a diverse environment, which is consistent with widespread distribution of commercial seed potatoes. The author(s) declare no conflict of interest. Funding: This work was supported by Russian Science Foundation grant #16-16-00073.
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Affiliation(s)
| | - Anna A Lukianova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry Russian Academy of Sciences, 68485, Molecular bioengineering, Moscow, Moscow, Russian Federation;
| | - Mikhail M Shneider
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry Russian Academy of Sciences, 68485, Moscow, Moscow, Russian Federation;
| | - Aleksei A Korzhenkov
- National Research Center Kurchatov Institute, 68636, Moscow, Moscow, Russian Federation;
| | - Stepan V Toschakov
- Immanuel Kant Baltic Federal University, 64920, Kaliningrad, Russian Federation;
| | - Kostantin A Miroshnikov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry Russian Academy of Sciences, 68485, Molecular bioengineering, Moscow, Moscow, Russian Federation;
| | - Dmitri M Vasiliev
- PhytoEngineering R&D Center, Diagnostic Laboratory, Rogachevo, Moscow region, Russian Federation;
| | - Aleksandr Ignatov
- Рeoples' Friendship University of Russia (RUDN University), Moscow, Russian Federation;
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Oulghazi S, Sarfraz S, Zaczek-Moczydłowska MA, Khayi S, Ed-Dra A, Lekbach Y, Campbell K, Novungayo Moleleki L, O’Hanlon R, Faure D. Pectobacterium brasiliense: Genomics, Host Range and Disease Management. Microorganisms 2021; 9:E106. [PMID: 33466309 PMCID: PMC7824751 DOI: 10.3390/microorganisms9010106] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 12/13/2022] Open
Abstract
Pectobacterium brasiliense (Pbr) is considered as one of the most virulent species among the Pectobacteriaceae. This species has a broad host range within horticulture crops and is well distributed elsewhere. It has been found to be pathogenic not only in the field causing blackleg and soft rot of potato, but it is also transmitted via storage causing soft rot of other vegetables. Genomic analysis and other cost-effective molecular detection methods such as a quantitative polymerase chain reaction (qPCR) are essential to investigate the ecology and pathogenesis of the Pbr. The lack of fast, field deployable point-of-care testing (POCT) methods, specific control strategies and current limited genomic knowledge make management of this species difficult. Thus far, no comprehensive review exists about Pbr, however there is an intense need to research the biology, detection, pathogenicity and management of Pbr, not only because of its fast distribution across Europe and other countries but also due to its increased survival to various climatic conditions. This review outlines the information available in peer-reviewed literature regarding host range, detection methods, genomics, geographical distribution, nomenclature and taxonomical evolution along with some of the possible management and control strategies. In summary, the conclusions and a further directions highlight the management of this species.
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Affiliation(s)
- Said Oulghazi
- Department of Biology, Faculty of Sciences, Moulay Ismaïl University, BP.11201, Zitoune Meknes 50000, Morocco; (S.O.); (A.E.-D.)
- Institute for Integrative Biology of the Cell (I2BC), CEA CNRS University Paris-Saclay, 91190 Gif-sur-Yvette, France
| | - Sohaib Sarfraz
- Department of Plant Pathology, Faculty of Agriculture, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan;
| | - Maja A. Zaczek-Moczydłowska
- Institute for Global Food Security, School of Biological Sciences, Queen’s University, Belfast BT9 5DL, UK; (M.A.Z.-M.); (K.C.)
| | - Slimane Khayi
- Biotechnology Research Unit, CRRA-Rabat, National Institute for Agricultural Research (INRA), Rabat 10101, Morocco;
| | - Abdelaziz Ed-Dra
- Department of Biology, Faculty of Sciences, Moulay Ismaïl University, BP.11201, Zitoune Meknes 50000, Morocco; (S.O.); (A.E.-D.)
| | - Yassir Lekbach
- Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang 110819, China;
| | - Katrina Campbell
- Institute for Global Food Security, School of Biological Sciences, Queen’s University, Belfast BT9 5DL, UK; (M.A.Z.-M.); (K.C.)
| | - Lucy Novungayo Moleleki
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria 0002, South Africa;
| | - Richard O’Hanlon
- Agri-Food and Biosciences Institute, 18a Newforge Lane, Belfast BT9 5PX, UK;
- Department of Agriculture, Food and the Marine, D02 WK12 Dublin 2, Ireland
| | - Denis Faure
- Institute for Integrative Biology of the Cell (I2BC), CEA CNRS University Paris-Saclay, 91190 Gif-sur-Yvette, France
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Liu JM, Wang SS, Zheng X, Jin N, Lu J, Huang YT, Fan B, Wang FZ. Antimicrobial Activity Against Phytopathogens and Inhibitory Activity on Solanine in Potatoes of the Endophytic Bacteria Isolated From Potato Tubers. Front Microbiol 2020; 11:570926. [PMID: 33281766 PMCID: PMC7705204 DOI: 10.3389/fmicb.2020.570926] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 09/28/2020] [Indexed: 11/29/2022] Open
Abstract
As an important global crop, the potato (Solanum tuberosum L.) contains the endotoxin solanine that leads to human poisoning and major economic losses. Poisoning symptoms and even acute poisoning may occur when the content of solanine in potatoes exceeds 200 mg/kg. In addition, potatoes are susceptible to some pathogenic bacteria, including Streptomyces scabies and Erwinia carotovora subsp. atroseptica (Van Hall) dye, which can cause potato scab and potato blackleg disease, respectively. In this study, 37 culturable endophytic bacteria strains were obtained from potato tubers based on the culture-dependent method. Results indicated that nine strains showed antimicrobial activity against at least one pathogen by antimicrobial activity screening and 23 strains showed inhibitory activity on solanine in potato tubers. Among them, strain P-NA2-14 (Bacillus megaterium NBRC 15308T, 99.31%) showed not only better antimicrobial activity against both the two indicator pathogens, but also the best inhibitory activity on solanine, which was proved to be a potential biocontrol bacterium. Meanwhile, the relationship between the distribution of the endophytic bacterial community and the content of solanine in potato tubers was studied by Illumina-based analysis, indicating that the distribution of the endophytic bacterial community was obviously influenced by the content of solanine. The results showed a new insight into the relationship between plant secondary metabolites and endophytic bacteria in potato tubers and provided potential new technical support for the biological control of potato storage.
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Affiliation(s)
| | | | | | | | | | | | - Bei Fan
- Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Feng-Zhong Wang
- Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
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Liu HW, Ji QT, Ren GG, Wang F, Su F, Wang PY, Zhou X, Wu ZB, Li Z, Yang S. Antibacterial Functions and Proposed Modes of Action of Novel 1,2,3,4-Tetrahydro-β-carboline Derivatives that Possess an Attractive 1,3-Diaminopropan-2-ol Pattern against Rice Bacterial Blight, Kiwifruit Bacterial Canker, and Citrus Bacterial Canker. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:12558-12568. [PMID: 33140649 DOI: 10.1021/acs.jafc.0c02528] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In recent years, naturally occurring tetrahydro-β-carboline (THC) alkaloids and their derivatives have been of biological interest. However, few studies and developments have reported the use of such structures in managing plant bacterial diseases. Herein, an array of novel THC derivatives containing an attractive 1,3-diaminopropan-2-ol pattern were prepared to evaluate the antiphytopathogen activity in vitro and in vivo and explore innovative antibacterial frameworks. Notably, target compounds exhibited excellent activities against three rebellious phytopathogens, namely, Pseudomonas syringae pv. actinidiae (Psa), Xanthomonas axonopodis pv. citri, and Xanthomonas oryzae pv. oryzae, at related optimal EC50 values of 2.39 (II9), 2.06 (I23), and 1.69 (II9) μg/mL, respectively. These effects were superior to those of the parent structure 1,2,3,4-THC and positive controls. In vivo assays showed that II9 exhibited excellent control efficiencies of 51.89 and 65.45% at 200 μg/mL against rice bacterial blight and kiwifruit bacterial canker, respectively, and I23 substantially relieved the citrus canker on the leaves. Antibacterial mechanisms indicated that these THC compounds could induce the increment of reactive oxygen species and subsequently endow the tested bacteria with distinct apoptotic behavior. In addition, II9 could alleviate the hypersensitive response and pathogenicity of Psa. Overall, these simple THC derivatives can be further developed as versatile antibacterial agents.
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Affiliation(s)
- Hong-Wu Liu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Qing-Tian Ji
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Gang-Gang Ren
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Fang Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Fen Su
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Pei-Yi Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Xiang Zhou
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Zhi-Bing Wu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Zhong Li
- College of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Song Yang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
- College of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
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Portier P, Pédron J, Taghouti G, Dutrieux C, Barny MA. Updated Taxonomy of Pectobacterium Genus in the CIRM-CFBP Bacterial Collection: When Newly Described Species Reveal "Old" Endemic Population. Microorganisms 2020; 8:microorganisms8091441. [PMID: 32962307 PMCID: PMC7565848 DOI: 10.3390/microorganisms8091441] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 11/16/2022] Open
Abstract
Bacterial collections are invaluable tools for microbiologists. However, their practical use is compromised by imprecise taxonomical assignation of bacterial strains. This is particularly true for soft rotting plant pathogens of the Pectobacterium genus. We analysed the taxonomic status of 265 Pectobacterium strains deposited at CIRM-CFBP collection from 1944 to 2020. This collection gathered Pectobacterium strains isolated in 27 countries from 32 plant species representing 17 botanical families or from nonhost environments. The MLSA approach completed by genomic analysis of 15 strains was performed to update the taxonomic status of these 265 strains. The results showed that the CIRM-CFBP Pectobacterium collection harboured at least one strain of each species, with the exception of P. polonicum. Yet, seven strains could not be assigned to any of the described species and may represent at least two new species. Surprisingly, P. versatile, recently described in 2019, is the most prevalent species among CIRM-CFBP strains. An analysis of P. versatile strains revealed that this species is pandemic and isolated from various host plants and environments. At the opposite, other species gathered strains isolated from only one botanical family or exclusively from a freshwater environment. Our work also revealed new host plants for several Pectobacterium spp.
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Affiliation(s)
- Perrine Portier
- IRHS-UMR1345, CIRM-CFBP, Institut Agro, INRAE, Université d’Angers, SFR 4207 QuaSav, 49071 Beaucouzé, France; (P.P.); (G.T.); (C.D.)
| | - Jacques Pédron
- Sorbonne Université, INRAE, Institute of Ecology and Environmental Sciences-Paris, 4 place Jussieu, F-75 252 Paris, France;
| | - Géraldine Taghouti
- IRHS-UMR1345, CIRM-CFBP, Institut Agro, INRAE, Université d’Angers, SFR 4207 QuaSav, 49071 Beaucouzé, France; (P.P.); (G.T.); (C.D.)
| | - Cécile Dutrieux
- IRHS-UMR1345, CIRM-CFBP, Institut Agro, INRAE, Université d’Angers, SFR 4207 QuaSav, 49071 Beaucouzé, France; (P.P.); (G.T.); (C.D.)
| | - Marie-Anne Barny
- Sorbonne Université, INRAE, Institute of Ecology and Environmental Sciences-Paris, 4 place Jussieu, F-75 252 Paris, France;
- Correspondence:
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Jee S, Choi JG, Lee YG, Kwon M, Hwang I, Heu S. Distribution of Pectobacterium Species Isolated in South Korea and Comparison of Temperature Effects on Pathogenicity. THE PLANT PATHOLOGY JOURNAL 2020; 36:346-354. [PMID: 32788893 PMCID: PMC7403519 DOI: 10.5423/ppj.oa.09.2019.0235] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 06/16/2020] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
Pectobacterium, which causes soft rot disease, is divided into 18 species based on the current classification. A total of 225 Pectobacterium strains were isolated from 10 main cultivation regions of potato (Solanum tuberosum), napa cabbage (Brassica rapa subsp. pekinensis), and radish (Raphanus sativus) in South Korea; 202 isolates (90%) were from potato, 18 from napa cabbage, and five from radish. Strains were identified using the Biolog test and phylogenetic analysis. The pathogenicity and swimming motility were tested at four different temperatures. Pectolytic activity and plant cell-wall degrading enzyme (PCWDE) activity were evaluated for six species (P. carotovorum subsp. carotovorum, Pcc; P. odoriferum, Pod; P. brasiliense, Pbr; P. versatile, Pve; P. polaris, Ppo; P. parmentieri, Ppa). Pod, Pcc, Pbr, and Pve were the most prevalent species. Although P. atrosepticum is a widespread pathogen in other countries, it was not found here. This is the first report of Ppo, Ppa, and Pve in South Korea. Pectobacterium species showed stronger activity at 28°C and 32°C than at 24°C, and showed weak activity at 37°C. Pectolytic activity decreased with increasing temperature. Activity of pectate lyase was not significantly affected by temperature. Activity of protease, cellulase, and polygalacturonase decreased with increasing temperature. The inability of isolated Pectobacterium to soften host tissues at 37°C may be a consequence of decreased motility and PCWDE activity. These data suggest that future increases in temperature as a result of climate change may affect the population dynamics of Pectobacterium.
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Affiliation(s)
- Samnyu Jee
- Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration, Pyeongchang 25342, Korea
| | - Jang-Gyu Choi
- Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration, Pyeongchang 25342, Korea
| | - Young-Gyu Lee
- Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration, Pyeongchang 25342, Korea
| | - Min Kwon
- Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration, Pyeongchang 25342, Korea
| | - Ingyu Hwang
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Korea
| | - Sunggi Heu
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613, Korea
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Diversity of Pectobacteriaceae Species in Potato Growing Regions in Northern Morocco. Microorganisms 2020; 8:microorganisms8060895. [PMID: 32545839 PMCID: PMC7356628 DOI: 10.3390/microorganisms8060895] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/30/2020] [Accepted: 06/09/2020] [Indexed: 11/17/2022] Open
Abstract
Dickeya and Pectobacterium pathogens are causative agents of several diseases that affect many crops worldwide. This work investigated the species diversity of these pathogens in Morocco, where Dickeya pathogens have only been isolated from potato fields recently. To this end, samplings were conducted in three major potato growing areas over a three-year period (2015-2017). Pathogens were characterized by sequence determination of both the gapA gene marker and genomes using Illumina and Oxford Nanopore technologies. We isolated 119 pathogens belonging to P. versatile (19%), P. carotovorum (3%), P. polaris (5%), P. brasiliense (56%) and D. dianthicola (17%). Their taxonomic assignation was confirmed by draft genome analyses of 10 representative strains of the collected species. D. dianthicola were isolated from a unique area where a wide species diversity of pectinolytic pathogens was observed. In tuber rotting assays, D. dianthicola isolates were more aggressive than Pectobacterium isolates. The complete genome sequence of D. dianthicola LAR.16.03.LID was obtained and compared with other D. dianthicola genomes from public databases. Overall, this study highlighted the ecological context from which some Dickeya and Pectobacterium species emerged in Morocco, and reported the first complete genome of a D. dianthicola strain isolated in Morocco that will be suitable for further epidemiological studies.
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Sarfraz S, Sahi ST, Oulghazi S, Riaz K, Rajput NA, Atiq M, Tufail MR, Hameed A, Faure D. Species Diversity of Dickeya and Pectobacterium Causing Potato Blackleg Disease in Pakistan. PLANT DISEASE 2020; 104:1492-1499. [PMID: 32150503 DOI: 10.1094/pdis-08-19-1743-re] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Potato blackleg is caused by a diverse species of pectinolytic bacteria. In Pakistan, approximately 90% of the pathogens involved belong to Pectobacterium atrosepticum. Survey (2014 to 2017), sampling, and isolation from different potato growing areas of Punjab, Pakistan depicted an overall disease incidence of approximately 15%. Thirty-six pectinolytic strains confirmed through biochemical and pathogenicity testing were characterized via gapA gene to identify them at the species level. To further validate the identification, one strain from each species SS26 (P. atrosepticum), SS28 (Pectobacterium polaris), SS70 (Dickeya dianthicola), SS90 (Pectobacterium parmentieri), SS95 (Pectobacterium punjabense), and SS96 (Pectobacterium versatile) were selected for draft genome sequencing and multilocus sequence analysis of 13 housekeeping genes (fusA, rpoD, acnA, purA, gyrB, recA, mdh, mtlD, groEL, secY, glyA, gapA, and rplB). Phylogenetic analysis revealed considerable genetic diversity in the genus Pectobacterium. In silico DNA-DNA hybridization and average nucleotide identity values of the strains selected for genome sequencing were determined with other reference Pectobacterium and Dickeya strains. Moreover, all six representative strains were also phenotypically characterized on the basis of metabolism of different carbon sources. Overall, on the basis of genotypic and phenotypic characteristics, these 36 isolates were grouped into six species: P. atrosepticum, P. versatile, P. parmentieri, P. polaris, P. punjabense, and D. dianthicola.
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Affiliation(s)
- Sohaib Sarfraz
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
- Department of Plant Pathology, Faculty of Agriculture, University of Agriculture Faisalabad 38000, Pakistan
| | - Shahbaz Talib Sahi
- Department of Plant Pathology, Faculty of Agriculture, University of Agriculture Faisalabad 38000, Pakistan
| | - Saïd Oulghazi
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
- Department of Biology, Faculty of Sciences, Moulay Ismaïl University, Meknes, Morocco
| | - Kashif Riaz
- Department of Plant Pathology, Faculty of Agriculture, University of Agriculture Faisalabad 38000, Pakistan
| | - Nasir Ahmed Rajput
- Department of Plant Pathology, Faculty of Agriculture, University of Agriculture Faisalabad 38000, Pakistan
| | - Muhammad Atiq
- Department of Plant Pathology, Faculty of Agriculture, University of Agriculture Faisalabad 38000, Pakistan
| | - Muhammad Rizwan Tufail
- Department of Plant Pathology, Faculty of Agriculture, University of Agriculture Faisalabad 38000, Pakistan
| | - Akhtar Hameed
- Department of Plant Pathology, Faculty of Agriculture, University of Agriculture Faisalabad 38000, Pakistan
| | - Denis Faure
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
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Autographivirinae Bacteriophage Arno 160 Infects Pectobacterium carotovorum via Depolymerization of the Bacterial O-Polysaccharide. Int J Mol Sci 2020; 21:ijms21093170. [PMID: 32365879 PMCID: PMC7246868 DOI: 10.3390/ijms21093170] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/27/2020] [Accepted: 04/28/2020] [Indexed: 11/17/2022] Open
Abstract
Phytopathogenic bacteria belonging to the Pectobacterium and Dickeya genera (soft-rot Pectobacteriaceae) are in the focus of agriculture-related microbiology because of their diversity, their substantial negative impact on the production of potatoes and vegetables, and the prospects of bacteriophage applications for disease control. Because of numerous amendments in the taxonomy of P. carotovorum, there are still a few studied sequenced strains among this species. The present work reports on the isolation and characterization of the phage infectious to the type strain of P. carotovorum. The phage Arno 160 is a lytic Podovirus representing a potential new genus of the subfamily Autographivirinae. It recognizes O-polysaccahride of the host strain and depolymerizes it in the process of infection using a rhamnosidase hydrolytic mechanism. Despite the narrow host range of this phage, it is suitable for phage control application.
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Li X, Fu L, Chen C, Sun W, Tian Y, Xie H. Characteristics and Rapid Diagnosis of Pectobacterium carotovorum ssp. Associated With Bacterial Soft Rot of Vegetables in China. PLANT DISEASE 2020; 104:1158-1166. [PMID: 32053476 DOI: 10.1094/pdis-05-19-1033-re] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Pectobacterium carotovorum, a causal agent of vegetable soft rot, contains three valid subspecies: P. carotovorum subsp. carotovorum (Pcc), P. carotovorum subsp. brasiliensis (Pcb), and P. carotovorum subsp. odoriferum (Pco). Using 16S rDNA sequencing and genus-specific PCR, we identified 72 P. carotovorum strains from Chinese cabbage, bok choy, and celery and assessed their pathogenicity on Chinese cabbage petioles and potato tubers. Based on phylogenetic analysis of pmrA sequences and confirmation by subspecies-specific PCR, the strains were divided into 18 Pcc, 29 Pco, and 25 Pcb. Several characteristic features were also assessed and supported the distinctiveness of the Pco strains. All P. carotovorum strains caused soft rot symptoms on Chinese cabbage and potato, but the Pco strains exhibited the greatest severity. We developed a conventional PCR and a quantitative PCR (qPCR) assay for the identification of Pco based on its specific srlE gene encoding sorbitol-specific phosphotransferase. These two methods could specifically amplify the expected products of 674 and 108 bp, respectively, from all of the Pco strains. The assays demonstrated high sensitivity and could detect as little as 1 and 100 pg/µl of bacterial genomic DNA, respectively. Both assays could also detect the pathogens directly from plant tissues infected with as little as 2.5 × 10-2 CFU/mg of Pco, even before external symptoms appeared. These assays constitute effective tools for disease diagnosis and the rapid identification of soft rot pathogens.
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Affiliation(s)
- Xiaoying Li
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, People's Republic of China
| | - Lu Fu
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, People's Republic of China
| | - Changlong Chen
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, People's Republic of China
| | - Wangwang Sun
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, People's Republic of China
| | - Yu Tian
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, People's Republic of China
| | - Hua Xie
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing 100097, People's Republic of China
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Pasanen M, Waleron M, Schott T, Cleenwerck I, Misztak A, Waleron K, Pritchard L, Bakr R, Degefu Y, van der Wolf J, Vandamme P, Pirhonen M. Pectobacterium parvum sp. nov., having a Salmonella SPI-1-like Type III secretion system and low virulence. Int J Syst Evol Microbiol 2020; 70:2440-2448. [PMID: 32100697 PMCID: PMC7395620 DOI: 10.1099/ijsem.0.004057] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/27/2020] [Accepted: 01/30/2020] [Indexed: 11/25/2022] Open
Abstract
Pectobacterium strains isolated from potato stems in Finland, Poland and the Netherlands were subjected to polyphasic analyses to characterize their genomic and phenotypic features. Phylogenetic analysis based on 382 core proteins showed that the isolates clustered closest to Pectobacterium polaris but could be divided into two clades. Average nucleotide identity (ANI) analysis revealed that the isolates in one of the clades included the P. polaris type strain, whereas the second clade was at the border of the species P. polaris with a 96 % ANI value. In silico genome-to-genome comparisons between the isolates revealed values below 70%, patristic distances based on 1294 core proteins were at the level observed between closely related Pectobacterium species, and the two groups of bacteria differed in genome size, G+C content and results of amplified fragment length polymorphism and Biolog analyses. Comparisons between the genomes revealed that the isolates of the atypical group contained SPI-1-type Type III secretion island and genes coding for proteins known for toxic effects on nematodes or insects, and lacked many genes coding for previously characterized virulence determinants affecting rotting of plant tissue by soft rot bacteria. Furthermore, the atypical isolates could be differentiated from P. polaris by their low virulence, production of antibacterial metabolites and a citrate-negative phenotype. Based on the results of a polyphasic approach including genome-to-genome comparisons, biochemical and virulence assays, presented in this report, we propose delineation of the atypical isolates as a novel species Pectobacterium parvum, for which the isolate s0421T (CFBP 8630T=LMG 30828T) is suggested as a type strain.
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Affiliation(s)
- Miia Pasanen
- Department of Agricultural Sciences, University of Helsinki, Helsinki, Finland
| | - Malgorzata Waleron
- Department of Biotechnology, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Gdansk, Poland
| | | | - Ilse Cleenwerck
- Ghent University, BCCM/LMG Bacteria Collection, Ghent, Belgium
| | - Agnieszka Misztak
- Department of Biotechnology, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Gdansk, Poland
| | - Krzysztof Waleron
- Department of Pharmaceutical Microbiology, Medical University of Gdansk, Gdańsk, Poland
| | - Leighton Pritchard
- Information and Computational Sciences, The James Hutton Institute, Dundee, Scotland, UK
- Present address: Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, UK
| | - Ramadan Bakr
- Department of Agricultural Sciences, University of Helsinki, Helsinki, Finland
- Present address: Department of Agricultural Botany, Faculty of Agriculture, Menoufia University, Shibin Elkom, Egypt
| | | | - Jan van der Wolf
- Wageningen University and Research, Bio-interactions and Plant Health, Wageningen, The Netherlands
| | - Peter Vandamme
- Ghent University, BCCM/LMG Bacteria Collection, Ghent, Belgium
| | - Minna Pirhonen
- Department of Agricultural Sciences, University of Helsinki, Helsinki, Finland
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Development of PCR-Based Detection System for Soft Rot Pectobacteriaceae Pathogens Using Molecular Signatures. Microorganisms 2020; 8:microorganisms8030358. [PMID: 32131497 PMCID: PMC7143467 DOI: 10.3390/microorganisms8030358] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 02/14/2020] [Accepted: 02/27/2020] [Indexed: 11/24/2022] Open
Abstract
Pectobacterium and Dickeya species, usually referred to as soft rot Enterobacteriaceae, are phytopathogenic genera of bacteria that cause soft rot and blackleg diseases and are responsible for significant yield losses in many crops across the globe. Diagnosis of soft rot disease is difficult through visual disease symptoms. Pathogen detection and identification methods based on cultural and morphological identification are time-consuming and not always reliable. A polymerase chain reaction (PCR)-based detection method with the species-specific primers is fast and reliable for detecting soft rot pathogens. We have developed a specific and sensitive detection system for some species of soft rot Pectobacteriaceae pathogens in the Pectobacterium and Dickeya genera based on the use of species-specific primers to amplify unique genomic segments. The specificities of primers were verified by PCR analysis of genomic DNA from 14 strains of Pectobacterium, 8 strains of Dickeya, and 6 strains of non-soft rot bacteria. This PCR assay provides a quick, simple, powerful, and reliable method for detection of soft rot bacteria.
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van den Bosch TJM, Niemi O, Welte CU. Single gene enables plant pathogenic Pectobacterium to overcome host-specific chemical defence. MOLECULAR PLANT PATHOLOGY 2020; 21:349-359. [PMID: 31872947 PMCID: PMC7036374 DOI: 10.1111/mpp.12900] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 10/30/2019] [Accepted: 11/27/2019] [Indexed: 05/04/2023]
Abstract
Plants of the Brassicales order, including Arabidopsis and many common vegetables, produce toxic isothiocyanates to defend themselves against pathogens. Despite this defence, plant pathogenic microorganisms like Pectobacterium cause large yield losses in fields and during storage of crops. The bacterial gene saxA was previously found to encode isothiocyanate hydrolase that degrades isothiocyanates in vitro. Here we demonstrate in planta that saxA is a virulence factor that can overcome the chemical defence system of Brassicales plants. Analysis of the distribution of saxA genes in Pectobacterium suggests that saxA from three different phylogenetic origins are present within this genus. Deletion of saxA genes representing two of the most common classes from P. odoriferum and P. versatile resulted in significantly reduced virulence on Arabidopsis thaliana and Brassica oleracea. Furthermore, expressing saxA from a plasmid in a potato-specific P. parmentieri strain that does not naturally harbour this gene significantly increased the ability of the strain to macerate Arabidopsis. These findings suggest that a single gene may have a significant role in defining the host range of a plant pathogen.
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Affiliation(s)
- Tijs J. M. van den Bosch
- Department of MicrobiologyInstitute for Water and Wetland Research, Radboud UniversityNijmegenNetherlands
| | - Outi Niemi
- Viikki Plant Science CentreFaculty of Biological and Environmental SciencesUniversity of HelsinkiFinland
| | - Cornelia U. Welte
- Department of MicrobiologyInstitute for Water and Wetland Research, Radboud UniversityNijmegenNetherlands
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Lukianova AA, Shneider MM, Evseev PV, Shpirt AM, Bugaeva EN, Kabanova AP, Obraztsova EA, Miroshnikov KK, Senchenkova SN, Shashkov AS, Toschakov SV, Knirel YA, Ignatov AN, Miroshnikov KA. Morphologically Different Pectobacterium brasiliense Bacteriophages PP99 and PP101: Deacetylation of O-Polysaccharide by the Tail Spike Protein of Phage PP99 Accompanies the Infection. Front Microbiol 2020; 10:3147. [PMID: 32038580 PMCID: PMC6989608 DOI: 10.3389/fmicb.2019.03147] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/29/2019] [Indexed: 01/31/2023] Open
Abstract
Soft rot caused by numerous species of Pectobacterium and Dickeya is a serious threat to the world production of potatoes. The application of bacteriophages to combat bacterial infections in medicine, agriculture, and the food industry requires the selection of comprehensively studied lytic phages and the knowledge of their infection mechanism for more rational composition of therapeutic cocktails. We present the study of two bacteriophages, infective for the Pectobacterium brasiliense strain F152. Podoviridae PP99 is a representative of the genus Zindervirus, and Myoviridae PP101 belongs to the still unclassified genomic group. The structure of O-polysaccharide of F152 was established by sugar analysis and 1D and 2D NMR spectroscopy: → 4)-α-D-Manp6Ac-(1→ 2)-α-D-Manp-(1→ 3)-β-D-Galp-(1→
3↑1α-l-6dTalpAc0−2 The recombinant tail spike protein of phage PP99, gp55, was shown to deacetylate the side chain talose residue of bacterial O-polysaccharide, thus providing the selective attachment of the phage to the cell surface. Both phages demonstrate lytic behavior, thus being prospective for therapeutic purposes.
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Affiliation(s)
- Anna A Lukianova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.,Department of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Mikhail M Shneider
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Peter V Evseev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Anna M Shpirt
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | | | - Anastasia P Kabanova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.,Research Center "PhytoEngineering" Ltd., Rogachevo, Moscow, Russia
| | - Ekaterina A Obraztsova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Kirill K Miroshnikov
- Winogradsky Institute of Microbiology, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, Russia
| | - Sofiya N Senchenkova
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Alexander S Shashkov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Stepan V Toschakov
- Winogradsky Institute of Microbiology, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, Russia
| | - Yuriy A Knirel
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | | | - Konstantin A Miroshnikov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
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Genome-Wide Analyses Revealed Remarkable Heterogeneity in Pathogenicity Determinants, Antimicrobial Compounds, and CRISPR-Cas Systems of Complex Phytopathogenic Genus Pectobacterium. Pathogens 2019; 8:pathogens8040247. [PMID: 31756888 PMCID: PMC6963963 DOI: 10.3390/pathogens8040247] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/12/2019] [Accepted: 11/18/2019] [Indexed: 02/07/2023] Open
Abstract
The Pectobacterium genus comprises pectolytic enterobacteria defined as the causal agents of soft rot, blackleg, and aerial stem rot diseases of potato and economically important crops. In this study, we undertook extensive genome-wide comparative analyses of twelve species that conform the Pectobacterium genus. Bioinformatics approaches outlined a low nucleotide identity of P. parmentieri and P. wasabiae with other species, while P. carotovorum subsp. odoriferum was shown to harbor numerous pseudogenes, which suggests low coding capacity and genomic degradation. The genome atlases allowed for distinguishing distinct DNA structures and highlighted suspicious high transcription zones. The analyses unveiled a noteworthy heterogeneity in the pathogenicity determinants. Specifically, phytotoxins, polysaccharides, iron uptake systems, and the type secretion systems III-V were observed in just some species. Likewise, a comparison of gene clusters encoding antimicrobial compounds put in evidence for high conservation of carotovoricin, whereas a few species possessed the phenazine, carbapenem, and carocins. Moreover, three clustered regularly interspaced short palindromic repeats-Cas (CRISPR-Cas) systems: I-E, I-F, and III-A were identified. Surrounding some CRISPR-Cas regions, different toxin and antitoxin systems were found, which suggests bacterial suicide in the case of an immune system failure. Multiple whole-genome alignments shed light on to the presence of a novel cellobiose phosphotransferase system (PTS) exclusive to P. parmenteri, and an unreported T5SS conserved in almost all species. Several regions that were associated with virulence, microbe antagonism, and adaptive immune systems were predicted within genomic islands, which underscored the essential role that horizontal gene transfer has imparted in the dynamic evolution and speciation of Pectobacterium species. Overall, the results decipher the different strategies that each species has developed to infect their hosts, outcompete for food resources, and defend against bacteriophages. Our investigation provides novel genetic insights that will assist in understanding the pathogenic lifestyle of Pectobacterium, a genus that jeopardizes the agriculture sustainability of important crops worldwide.
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Portier P, Pédron J, Taghouti G, Fischer-Le Saux M, Caullireau E, Bertrand C, Laurent A, Chawki K, Oulgazi S, Moumni M, Andrivon D, Dutrieux C, Faure D, Hélias V, Barny MA. Elevation of Pectobacterium carotovorum subsp. odoriferum to species level as Pectobacterium odoriferum sp. nov., proposal of Pectobacterium brasiliense sp. nov. and Pectobacterium actinidiae sp. nov., emended description of Pectobacterium carotovorum and description of Pectobacterium versatile sp. nov., isolated from streams and symptoms on diverse plants. Int J Syst Evol Microbiol 2019; 69:3207-3216. [PMID: 31343401 DOI: 10.1099/ijsem.0.003611] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The Pectobacteriumcarotovorum species corresponds to a complex, including two subspecies with validly published names, two proposed subspecies and two new species, Pectobacterium polaris and Pectobacterium aquaticum. Recent studies suggested that this complex needed revision. We examined the taxonomic status of 144 Pectobacterium strains isolated from a wide range of plant species, various geographical origins and waterways. Sequences of the leuS, dnaX and recA housekeeping genes clustered 114 of these Pectobacterium strains together within a not yet described clade. We sequenced eight strains of this clade and analysed them together with the 102 Pectobacterium genomes available in the NCBI database. Phylogenetic analysis, average nucleotide identity calculation and in silico DNA-DNA hybridization allowed us to differentiate seven clades. This led us to propose the elevation of Pectobacterium carotovorumsubsp. odoriferum to species level as Pectobacteriumodoriferum sp. nov. (type strain CFBP 1878T=LMG 5863T=NCPPB 3839T=ICMP 11533T), the proposal of Pectobacteriumactinidiae sp. nov. (type strain KKH3=LMG 26003 T=KCTC 23131T) and Pectobacteriumbrasiliense sp. nov. (type strain CFBP 6617T= LMG 21371T=NCPPB 4609T), to emend the description of Pectobacterium carotovorum (type strain CFBP 2046T=LMG 2404T=NCPPB 312T=ICMP 5702T), and to propose a novel species, Pectobacterium versatile sp. nov (type strain CFBP6051T= NCPPB 3387T=ICMP 9168T) which includes the strains previously described as 'Candidatus Pectobacterium maceratum'. Phenotypic analysis performed using Biolog GENIII plates on eight strains of P. versatile sp. nov. and related strains completed our analysis.
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Affiliation(s)
- Perrine Portier
- IRHS, CIRM-CFBP, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QuaSaV, 49071, Beaucouzé, France
| | - Jacques Pédron
- Sorbonne Université, INRA, Institute of Ecology and Environmental sciences-Paris, 4 place Jussieu, F-75 252 Paris, France
| | - Géraldine Taghouti
- IRHS, CIRM-CFBP, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QuaSaV, 49071, Beaucouzé, France
| | - Marion Fischer-Le Saux
- IRHS, CIRM-CFBP, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QuaSaV, 49071, Beaucouzé, France
| | - Emma Caullireau
- IRHS, CIRM-CFBP, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QuaSaV, 49071, Beaucouzé, France
| | - Claire Bertrand
- Sorbonne Université, INRA, Institute of Ecology and Environmental sciences-Paris, 4 place Jussieu, F-75 252 Paris, France
| | - Angélique Laurent
- FN3PT/RD3PT, French Federation of Seed Potato Growers, 75008, Paris, France
| | - Khaoula Chawki
- FN3PT/RD3PT, French Federation of Seed Potato Growers, 75008, Paris, France
| | - Saïd Oulgazi
- Institute for Integrative Biology of the Cell (I2BC), CEA CNRS Univ. Paris-Sud, University Paris-Saclay, 91198 Gif-sur-Yvette, France.,Department of Biology, Faculty of Sciences, Moulay Ismaïl University, BP11201 Zitoune, 50 000, Meknes, Morocco
| | - Mohedine Moumni
- Department of Biology, Faculty of Sciences, Moulay Ismaïl University, BP11201 Zitoune, 50 000, Meknes, Morocco
| | - Didier Andrivon
- IGEPP, Agrocampus Ouest, INRA, University Rennes 1, 35653 Le Rheu Cedex, France
| | - Cécile Dutrieux
- IRHS, CIRM-CFBP, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QuaSaV, 49071, Beaucouzé, France
| | - Denis Faure
- Institute for Integrative Biology of the Cell (I2BC), CEA CNRS Univ. Paris-Sud, University Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Valérie Hélias
- FN3PT/RD3PT, French Federation of Seed Potato Growers, 75008, Paris, France
| | - Marie-Anne Barny
- Sorbonne Université, INRA, Institute of Ecology and Environmental sciences-Paris, 4 place Jussieu, F-75 252 Paris, France
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Voronina MV, Bugaeva EN, Vasiliev DM, Kabanova AP, Barannik AP, Shneider MM, Kulikov EE, Korzhenkov AA, Toschakov SV, Ignatov AN, Miroshnikov KA. Characterization of Pectobacterium carotovorum subsp. carotovorum Bacteriophage PP16 Prospective for Biocontrol of Potato Soft Rot. Microbiology (Reading) 2019. [DOI: 10.1134/s0026261719040118] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Waleron M, Misztak A, Waleron M, Franczuk M, Jońca J, Wielgomas B, Mikiciński A, Popović T, Waleron K. Pectobacterium zantedeschiae sp. nov. a new species of a soft rot pathogen isolated from Calla lily (Zantedeschia spp.). Syst Appl Microbiol 2019; 42:275-283. [DOI: 10.1016/j.syapm.2018.08.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/07/2018] [Accepted: 08/09/2018] [Indexed: 11/24/2022]
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Waleron M, Misztak A, Waleron M, Jonca J, Furmaniak M, Waleron K. Pectobacterium polonicum sp. nov. isolated from vegetable fields. Int J Syst Evol Microbiol 2019; 69:1751-1759. [PMID: 30973319 DOI: 10.1099/ijsem.0.003387] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Gram-stain-negative, rod-shaped pectinolytic bacteria strains designated as DPMP315T, DPMP316, DPMP317 and DPMP318 isolated from groundwater sampled from a vegetable field in the North of Poland, were subjected to the polyphasic analyses. Multilocus sequence analyses based on five housekeeping genes (gyrA, recA, recN, rpoA and rpoS) revealed their distinctiveness from the other species of the genus, simultaneously indicating that the newly described species, Pectobacterium punjabense, as well as Pectobacterium parmentieri and P. wasabiae, to be the closest relatives. In silico DNA-DNA hybridization (<43.1 %) and average nucleotide identity (<92.5 %) values of strain DPMP315T with other type strains of species of the genus Pectobacterium supported the delineation of the novel strain as representing a novel species. The phenotypic comparisons, fatty acid methyl esters compositions, genetic rep PCR fingerprint and detailed whole-cell MALDI-TOF mass spectrometry proteomic profiles permitted the differentiation of Polish strains from the type strains of all other known species of the genus Pectobacterium. The results of polyphasic analyses performed for four Polish strains are the basis for the distinction of the novel species. Here, we propose to establish DPMP315T as a type strain (=PCM3006T=LMG 31077T) with the name Pectobacterium polonicum sp. nov.
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Affiliation(s)
- Malgorzata Waleron
- 1Department of Biotechnology, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Abrahama, Poland
| | - Agnieszka Misztak
- 1Department of Biotechnology, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Abrahama, Poland
| | - Michal Waleron
- 1Department of Biotechnology, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Abrahama, Poland
| | - Joanna Jonca
- 2Department of Pharmaceutical Microbiology, Faculty of Pharmacy with Subfaculty of Laboratory Medicine, Medical University of Gdansk, Gdansk, Poland
| | - Magda Furmaniak
- 2Department of Pharmaceutical Microbiology, Faculty of Pharmacy with Subfaculty of Laboratory Medicine, Medical University of Gdansk, Gdansk, Poland
| | - Krzysztof Waleron
- 2Department of Pharmaceutical Microbiology, Faculty of Pharmacy with Subfaculty of Laboratory Medicine, Medical University of Gdansk, Gdansk, Poland
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