Article
Multidisciplinary Sciences
Daryna Sokolova, Anna Smolarska, Przemyslaw Bartnik, Lukasz Rabalski, Maciej Kosinski, Magdalena Narajczyk, Dorota M. Krzyzanowska, Magdalena Rajewska, Inez Mruk, Paulina Czaplewska, Sylwia Jafra, Robert Czajkowski
Summary: This study identified two D. solani IPO 2222 mutants, DsR34 and DsR207, that showed reduced ability to macerate potato tuber tissues compared to the wildtype strain. Genome sequencing revealed altered genes encoding secretion protein HlyD and elongation factor Tu, which impacted the proteomes of the mutants.
SCIENTIFIC REPORTS
(2023)
Article
Microbiology
Marcin Borowicz, Dorota M. Krzyzanowska, Magdalena Narajczyk, Marta Sobolewska, Magdalena Rajewska, Paulina Czaplewska, Katarzyna Wegrzyn, Robert Czajkowski
Summary: Tailocins are nanomolecular machines produced by bacteria with bactericidal activity. In this study, a new tailocin produced by the plant pathogenic bacterium Dickeya dadantii was characterized. The tailocins showed resistance to pH, temperature, and high osmolarity, and had bactericidal activity against certain strains, but were not toxic to other bacteria and nematodes.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Microbiology
Cristina Bez, Alfonso Esposito, Hang Dinh Thuy, Minh Nguyen Hong, Giampiero Vale, Danilo Licastro, Iris Bertani, Silvano Piazza, Vittorio Venturi
Summary: This study focused on the pathobiome analysis of rice foot rot disease caused by Dickeya zeae, revealing the impact of the bacterial pathogen on the resident microbiome and the interactions between the pathogen and the microbial community involved in the disease process. The presence of D. zeae was found to alter the resident bacterial community and lead to the formation of microbial consortia associated with the disease state. Additionally, several bacterial species were identified to be co-present with the pathogen, suggesting their potential involvement in the disease process.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Multidisciplinary Sciences
Guy Condemine, Bastien Le Derout
Summary: Dickeya are plant pathogenic bacteria that can cause diseases in a wide range of plants. The Out type 2 secretion system (T2SS) is essential for the virulence of Dickeya. Previous studies have shown that the T2SS of D. dadantii secretes various plant cell wall degrading enzymes, including pectinases and cellulases. However, the full range of exoproteins that it can secrete has not yet been fully identified. In this study, we identified four new Out-secreted proteins and demonstrated the importance of two of these proteins in the virulence of D. dadantii.
Article
Biochemistry & Molecular Biology
Robert Czajkowski, Lukasz Rabalski, Przemyslaw Bartnik, Sylwia Jafra
Summary: Dickeya solani is an emerging plant-pathogenic bacterium causing disease symptoms in various agriculturally relevant crop species. Most sequenced genomes of D. solani strains come from potato, but this study presents the first complete high-quality genome of D. solani IPO 2019 isolated from an ornamental plant, providing valuable resources for comparative genomic studies.
MOLECULAR PLANT-MICROBE INTERACTIONS
(2021)
Article
Multidisciplinary Sciences
Przemyslaw Bartnik, Kinga Lewtak, Marta Fiolka, Paulina Czaplewska, Magdalena Narajczyk, Robert Czajkowski
Summary: Resistance to bacteriophage infections in Dickeya solani comes at a cost, compromising its ability to grow and cause disease in potato plants.
SCIENTIFIC REPORTS
(2022)
Article
Plant Sciences
Bimala Acharya, Lucas Mackasmiel, Ali Taheri, Christine A. Ondzighi-Assoume, Yiqun Weng, C. Korsi Dumenyo
Summary: This study aims to identify BW-resistant melon accessions in the USDA collection, and four highly resistant lines were identified through mechanical inoculation experiments. Fluorescent microscopy was used to observe the colonization dynamics of bacteria in resistant and susceptible melon samples, providing insights into possible mechanisms of BW resistance.
Article
Biotechnology & Applied Microbiology
Fan Liu, Ming Hu, Xu Tan, Yang Xue, Chuhao Li, Si Wang, Mingfa Lv, Xiaoyuan Chen, Xiaofan Zhou, Lian-hui Zhang, Jianuan Zhou
Summary: This study constructed a biosensor for monitoring the virulence factor in a specific bacterial strain, Dickeya, and screened out two bacteria with high inhibition efficiency against Dickeya. The results showed that these bacteria can reduce the virulence and PCWDEs production of Dickeya and have the potential for biocontrol of plant diseases.
MICROBIAL BIOTECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Camille Pineau, Natalia Guschinskaya, Isabelle R. Goncalves, Florence Ruaudel, Xavier Robert, Patrice Gouet, Lionel Ballut, Vladimir E. Shevchik
Summary: The type II secretion system transports fully folded proteins through the outer membrane of Gram-negative bacteria, with secretion determinants potentially being of a structural nature. Certain phytopathogenic gamma-proteobacteria secrete similar sets of enzymes via T2SS, but the fine-tuned control of protein recruitment is evident in the secretion of orthologous enzymes by different bacteria. Structural and functional analyses suggest that distant and flexible loop regions play a crucial role in protein secretion, with potential disorder-to-order transitions involved in the recruitment mechanism of T2SS.
JOURNAL OF BIOLOGICAL CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Dingxin Wen, Qingqing Guo, Wan Zhao, Yong Yang, Chunlei Yang, Jun Yu, Yun Hu
Summary: The study found that hydrogen sulfide can prevent tobacco bacterial wilt. The results showed that hydrogen sulfide can inhibit the growth of the bacteria, alter its cell morphology, inhibit biofilm formation and swarming motility, and reduce the population of bacteria invading tobacco roots.
SCIENTIFIC REPORTS
(2023)
Article
Biochemistry & Molecular Biology
Sylvie Reverchon, Sam Meyer, Raphael Forquet, Florence Hommais, Georgi Muskhelishvili, William Nasser
Summary: The study reveals the importance of IHF heterodimeric protein in bacterial adaptation and pathogenicity, as its absence affects the transcriptional organization and virulence gene expression of the bacteria.
NUCLEIC ACIDS RESEARCH
(2021)
Article
Horticulture
Rachidatou Sikirou, Marie Epiphane Dossoumou, Judith Honfoga, Victor Afari-Sefa, Ramasamy Srinivasan, Mathews Paret, Wubetu Bihon
Summary: Bacterial wilt caused by Ralstonia solanacearum is a growing concern in amaranth production in Benin. Host resistance is identified as the most sustainable disease control measure. The study suggests that the UG-AMES13-2 variety from the World Vegetable Center shows high resistance to R. solanacearum and should be promoted for seed production to support farmers.
Article
Plant Sciences
Murat Ozturk, Soner Soylu
Summary: The study identified a natural outbreak of bacterial fire blight disease caused by Erwinia amylovora on strawberries in Turkey for the first time. The presence of the pathogen, which is transmitted by bees, could potentially have a significant impact on local strawberry production in the future.
JOURNAL OF PLANT PATHOLOGY
(2022)
Article
Plant Sciences
Erika Valente de Medeiros, Neyla Thayna Lima, Jose Romualdo de Sousa Lima, Kedma Maria Silva Pinto, Diogo Paes da Costa, Rafaela Felix da Franca, Cicero Luiz Franco Junior, Gustavo Pereira Duda, Antonio Celso Dantas Antonino, Claude Hammecker
Summary: The study demonstrates the potential value of biochar in managing tomato diseases, showing that biochar from different sources can inhibit the growth of R. solanacearum and reduce the severity of bacterial wilt in tomatoes.
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2022)
Article
Agriculture, Multidisciplinary
W. A. P. G. Weeraratne, D. M. K. K. Dissanayake
Summary: The study identified the causal pathogen of bacterial soft rot of A. vera in Sri Lanka as Dickeya chrysanthemi, providing valuable information for disease management strategies and prevention of outbreaks.
JOURNAL OF AGRICULTURAL SCIENCES
(2021)
Article
Agronomy
Anita Vegh, Maria Hevesi, Eva Pajtli, Laszlo Palkovics
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2017)
Article
Biotechnology & Applied Microbiology
Aszteria Almasi, Katatin Nemes, Zsofia Csomor, Istvan Tobias, Laszlo Palkovics, Katalin Salanki
JOURNAL OF GENERAL VIROLOGY
(2017)
Article
Agronomy
Ibolya Ember, Peter Bodor, Zsolt Zsofi, Zita Palfi, Marta Ladanyi, Gyorgy Pasti, Tamas Deak, Diana Sardy Nyitraine, Borbala Balo, Andras Szekeres, Otto Bencsik, Xavier Foissac, Laszlo Palkovics, Jacobus Johannes Hunter, Gyorgy Denes Bisztray
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2018)
Article
Plant Sciences
Evelin Kaman-Toth, Tamas Danko, Gabor Gullner, Zoltan Bozso, Laszlo Palkovics, Miklos Pogany
MOLECULAR PLANT PATHOLOGY
(2019)
Editorial Material
Plant Sciences
Janos Agoston, Aszteria Almasi, Katalin Salanki, Laszlo Palkovics
JOURNAL OF PLANT PATHOLOGY
(2019)
Editorial Material
Plant Sciences
Janos Agoston, Aszteria Almasi, Katalin Nemes, Katalin Salanki, Laszlo Palkovics
JOURNAL OF PLANT PATHOLOGY
(2020)
Article
Agronomy
Janos Agoston, Aszteria Almasi, Katalin Salanki, Laszlo Palkovics
Summary: Grape hyacinth plants showing mosaic symptoms were found to be infected by several viruses including Hyacinth mosaic virus, Muscari mosaic virus, Arabis mosaic virus, Cucumber mosaic virus and Tobacco rattle virus. A novel potyvirus species tentatively named Muscari chlorotic mottle virus was identified in one of the grape hyacinth plants. Phylogenetic analysis was conducted by comparing nucleotide sequences and building Maximum Likelihood trees.
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2021)
Article
Plant Sciences
Janos Agoston, Aszteria Almasi, Katalin Salanki, Laszlo Palkovics
Article
Virology
Reka Saray, Attila Fabian, Laszlo Palkovics, Katalin Salanki
Summary: This study identified the important role of the Ser28 site of CMV MP in viral pathogenicity on tobacco, cucumber, and Chenopodium, and highlighted the significance of phosphorylatable amino acids in symptom formation. The subcellular localization of CMV MP was determined using confocal laser-scanning microscopy, revealing essential factors for its localization at plasmodesmata.
Article
Agronomy
Janos Agoston, Aszteria Almasi, Katalin Salanki, Laszlo Palkovics
Summary: In autumn 2017, autumn daffodil plants with yellow-green stripes on the leaves were observed at a botanical garden in Budapest, Hungary. Tests revealed that the symptomatic S. lutea leaf samples were infected with Narcissus late season yellows virus, marking the first report of this virus on Sternbergia lutea as a host.
PHYTOPATHOLOGIA MEDITERRANEA
(2021)
Article
Forestry
Imola Tenorio-Baigorria, Gergely Botyanszki, Rita Gyuris, Gyorgy Zsigo, Laszlo Palkovics, Anita Vegh
Summary: This study discovered a new disease in horse-chestnut trees in Hungary, characterized by longitudinal cracks on the trunk and branches and the oozing of brown liquid. Analysis confirmed that the causal agent belongs to the genus Brenneria.
Article
Agronomy
Laszlo Sandor Koncz, Marietta Petroczy, Bela Penzes, Marta Ladanyi, Laszlo Palkovics, Piroska Gyocsi, Geza Nagy, Janos agoston, Jozsef Fail
Summary: The pathogen 'Candidatus Phytoplasma prunorum' was identified as the cause of apricot tree decline in European countries. It was found in both plant tissues and insects, with a 29.6% incidence rate in apricot trees. The plum psyllid, Cacopsylla pruni, was confirmed as the main insect vector, with several infected adults observed. The related species, Cacopsylla crataegi, was also abundant and infected with the pathogen.
Proceedings Paper
Automation & Control Systems
K. Nagy, E. Hajrizi, L. Palkovics
Article
Agronomy
Bianka Bagi, Csaba Nagy, Annamaria Toth, Laszlo Palkovics, Marietta Petroczy
PHYTOPATHOLOGIA MEDITERRANEA
(2020)
Article
Plant Sciences
A. Lantos, M. Petroczy, R. Olah, L. Palkovics
JOURNAL OF PLANT PATHOLOGY
(2017)
