Article
Biochemistry & Molecular Biology
Adamantia Varympopi, Anastasia Dimopoulou, Dimitris Papafotis, Pavlos Avramidis, Ioannis Sarris, Theodora Karamanidou, Alexandra Kaldeli Kerou, Afroditi Vlachou, Eleftherios Vellis, Andreas Giannopoulos, Kosmas Haralampidis, Ioannis Theologidis, Dimitris G. Hatzinikolaou, Alexander Tsouknidas, Nicholas Skandalis
Summary: This study tested the ability of two copper nanoparticle products to control bacterial spot disease in tomatoes, and found that both nanoparticles effectively suppressed the growth of the causal agent and exhibited superior bioavailability compared to conventional formulations. This is an important report linking copper bioavailability to nanoparticle efficacy.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Multidisciplinary Sciences
Shenghua Gao, Fei Wang, Juntawong Niran, Ning Li, Yanxu Yin, Chuying Yu, Chunhai Jiao, Minghua Yao
Summary: The study conducted a transcriptomic analysis of a susceptible and a resistant pepper cultivar infected with Xanthomonas campestris pv. vesicatoria (Xcv), identifying a total of 38,269 expressed genes with 11,232 differentially expressed genes (DEGs). Functional enrichment analysis revealed key pathways involved in plant-pathogen interaction, MAPK signaling, plant hormone signaling, and secondary metabolism. Furthermore, the study identified 1,599 defense-related genes potentially regulating pepper resistance to Xcv, highlighting the importance of genes such as pattern recognition receptors, mitogen-activated protein kinases, calcium signaling molecules, and transcription factors.
Article
Plant Sciences
Fei Wang, Shenghua Gao, Juntawong Niran, Ning Li, Yanxu Yin, Chuying Yu, Chunhai Jiao, Minghua Yao
Summary: This study investigates the proteomic changes in response to Xanthomonas campestris pv. vesicatoria (Xcv) infection in bell peppers. Various defense-associated proteins were identified as up-regulated, providing insights into the molecular basis of pepper resistance to Xcv and potential strategies for improving disease resistance in pepper cultivars.
HORTICULTURAL PLANT JOURNAL
(2022)
Article
Microbiology
Anuj Sharma, Sujan Timilsina, Peter Abrahamian, Gerald Minsavage, James Colee, Peter S. Ojiambo, Erica M. Goss, Gary E. Vallad, Jeffrey B. Jones
Summary: The study revealed the key role of the effector gene xopJ2 in the dispersal and evolution of Xanthomonas perforans populations on tomato, showing that this gene can enhance the pathogen's fitness in the field, leading to its rapid fixation within cropping seasons. Through simulation experiments and logistic model analysis, it was found that wild-type bacteria dispersed approximately three times faster than xopJ2 mutants, further demonstrating the significant impact of the xopJ2 gene on the population dynamics of Xanthomonas perforans.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Plant Sciences
Ebrahim Osdaghi, Jeffrey B. Jones, Anuj Sharma, Erica M. Goss, Peter Abrahamian, Eric A. Newberry, Neha Potnis, Renato Carvalho, Manoj Choudhary, Mathews L. Paret, Sujan Timilsina, Gary E. Vallad
Summary: The disease symptoms include water-soaked areas, chlorosis, and necrotic spots on plants, with host range mainly on tomatoes and peppers. The pathogen belongs to Xanthomonas genus and has synonyms like Bacterium vesicatorium, with gram-negative colonies found in general culture media. It is widespread in Africa, Brazil, Canada, the USA, Australia, eastern Europe, and south-east Asia.
MOLECULAR PLANT PATHOLOGY
(2021)
Article
Microbiology
Kaihong Bai, Huayu Yan, Xing Chen, Qingyang Lyu, Na Jiang, Jianqiang Li, Laixin Luo
Summary: The alarmone ppGpp plays a crucial role in Xanthomonas campestris pv. campestris (Xcc) by influencing physiology, pathogenicity, and stress resistance, primarily through the mediation of SpoT. This study sheds new light on the significance of ppGpp in the biology of Xcc and may have broader implications for the survival and pathogenicity of other bacterial pathogens.
MICROBIOLOGY SPECTRUM
(2021)
Article
Biotechnology & Applied Microbiology
Kaihong Bai, Xiaoli Xu, Xudong Wang, Yao Li, Chengxuan Yu, Na Jiang, Jianqiang Li, Laixin Luo
Summary: This study used RNA-seq technology to investigate the mechanism of VBNC state induced by copper ion in Xcc. The results showed significant changes in gene expression and enriched metabolism-related pathways in different VBNC stages. Genes associated with cell motility were down-regulated, while pathogenicity related genes were up-regulated. This study not only summarized the related pathways of VBNC state, but also provided new ideas for studying gene expression profiles in different survival states under stress.
Article
Ecology
A. Akhter, M. S. Asif, W. Anwar, Z. E. H. Aftab, M. Khurshid, A. Hashem, G. D. Avela-Quezada, E. F. Abd-Allah
Summary: Biochar has been found to improve plant growth and activate defense mechanisms against biotic and abiotic stresses. In our study, we investigated the effect of rice straw biochar and flyash biochar on plant growth and disease suppression in chilli plants. The application of rice straw biochar significantly increased plant growth and enhanced defense-related biochemicals, resulting in a reduction in bacterial leaf spot development. Furthermore, rice straw biochar also showed inhibitory effects on pathogenic fungi and bacteria. Overall, our findings suggest that biochar amendment can have positive effects on plant health and disease suppression.
APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH
(2023)
Article
Plant Sciences
Lu Lu, Sokrat G. Monakhos, Yong Pyo Lim, So Young Yi
Summary: The study identified significant differences in the expression of defense-related genes and antioxidant activity between black rot disease-resistant cabbage lines and susceptible lines, indicating a potential role for Xcc-induced reactive oxygen species in black rot disease development.
Article
Microbiology
Filip Gazdik, Samuel Magnus, Steven J. Roberts, Rafal Baranski, Jana Cechova, Robert Pokluda, Ales Eichmeier, Dariusz Grzebelus, Miroslav Baranek
Summary: This study aimed to monitor the persistence of Xanthomonas campestris pv. campestris (Xcc) in field soil in central Europe, using different PCR assays. It was found that Xcc can persist in soil for up to two years, and the nested real-time PCR method showed higher sensitivity in detecting Xcc in soil compared to conventional PCR.
Article
Plant Sciences
Biswajit Samal, Subhadeep Chatterjee
Summary: The study revealed the important role of quorum sensing in phytopathogens, facilitating Xanthomonas campestris colonization in cabbage leaves and triggering chlorosis, promoting systemic infection. The quorum sensing response in the Xanthomonas group maximizes population fitness, triggering host chlorophagy at specific stages and establishing systemic infection.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Multidisciplinary Sciences
Yong-Liang Gan, Li-Yan Yang, Li-Chao Yang, Wan-Lian Li, Xue-Lian Liang, Wei Jiang, Guo-Feng Jiang, Xiao-Hong Hang, Mei Yang, Ji-Liang Tang, Bo-Le Jiang
Summary: The study identified a novel domain at the C-terminal end of HpaB in Xanthomonas campestris pv. campestris that contributes to virulence and hypersensitive response, revealing its involvement in the disassembly of chaperone-effector complex during the secretion of T3Es.
Article
Plant Sciences
Li Yang, Chuanji Zhao, Zetao Bai, Lingli Yang, M. Eric Schranz, Shengyi Liu, Klaas Bouwmeester
Summary: This study compared two Brassica napus lines with different resistance levels to black rot disease and evaluated the differential gene expression during infection. The resistant line showed a gradual increase in differentially expressed genes (DEGs), while the susceptible line displayed a steady amount of DEGs. Analysis of gene co-expression networks identified multiple defense-related genes and enriched pathways associated with defense.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Multidisciplinary Sciences
Zill-E-Huma Aftab, Waqar Aslam, Arusa Aftab, Adnan Noor Shah, Adnan Akhter, Usama Fakhar, Iffat Siddiqui, Waseem Ahmed, Farzana Majid, Jacek Wrobel, Muhammad Danish Ali, Muzammil Aftab, Mohamed A. A. Ahmed, Hazem M. Kalaji, Asad Abbas, Umar Khalid
Summary: The study found that rice straw biochar nanoparticles and fly ash nanoparticles, as soil amendments, can significantly improve the growth and yield of chili pepper plants, and reduce the quantity of Xanthomonas campestris pv. vesicatoria. Rice straw biochar nanoparticles were more effective in enhancing plant biomass, while both types of nanoparticles showed inhibitory effects on the pathogen.
SCIENTIFIC REPORTS
(2022)
Article
Agronomy
Jia-Bao Li, Lan-Tu Xiong, Yan-Rong Lu, Yu-Qing Zhang, Xiao-Li Xu, Hai-Hong Wang, Xin Deng, Xu-Hong Hu, Zi-Ning Cui
Summary: Cruciferous black rot, caused by Xcc infection, is a widespread disease globally. Excessive use of bactericide leads to bacterial resistance. This study discovered that compound SPF-9 inhibits virulence and pathogenicity of Xcc, showing potential as a novel T3SS inhibitor.
PEST MANAGEMENT SCIENCE
(2023)