Article
Biochemistry & Molecular Biology
Mei Zhu, Yan Li, Xuesha Long, Congyu Wang, Guiping Ouyang, Zhenchao Wang
Summary: Compound 2-(butyldisulfanyl) quinazolin-4(3H)-one exhibited strong anti-Xac activity and effectively controlled citrus canker. It reduced biofilm formation, increased reactive oxygen species levels, damaged bacterial morphology, and caused bacterial death. Through down-regulation of enzymes in the MEP pathway, this compound showed destructive ability against Xac. Overall, this study suggests that such derivatives hold promise as novel bactericides for citrus canker control.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Valeria Di Paolo, Fiorella Masotti, Cecilia V. Vranych, Carolina Grandellis, Betiana S. Garavaglia, Natalia Gottig, Jorgelina Ottado
Summary: Plant natriuretic peptides (PNPs) play an important role in regulating ions and water homeostasis in plants, and the causal agent of citrus canker disease, Xanthomonas citri subsp. citri (Xcc), possesses a similar peptide called XacPNP. Both AtPNP-A and XacPNP require the presence of the receptor AtPNP-R1 to induce stomatal aperture and maintain photosynthetic efficiency and water homeostasis in plant tissues during infection. The interaction between XacPNP and AtPNP-R1 triggers similar plant responses as its plant counterpart.
Article
Plant Sciences
Wenting Li, Zhenxi Li, Jiaquan Huang, Meirong Xu, Zheng Zheng, Xiaoling Deng
Summary: This study provides a reliable CRISPR/cas system for Xcc strains and identifies 15 types of CRISPR arrays with 25 spacers in XccA strains from six provinces in China. The phylogenetic analysis based on the CRISPR locus shows a more reliable and accurate typing result compared to commonly used loci. In addition, seven associated cas genes are found adjacent to the CRISPR array.
HORTICULTURAL PLANT JOURNAL
(2022)
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
Agronomy
Yun-Jiao Zhang, Yi-Bo Pang, Xin-Yi Wang, Yong-Hui Jiang, Daniela D. Herrera-Balandrano, Yan Jin, Su-Yan Wang, Pedro Laborda
Summary: The application of exogenous genistein inhibited soybean plant growth temporarily, increased disease resistance against Xag and fungal pathogen Sclerotinia sclerotiorum. It also enhanced antioxidant capacity, reduced H2O2 level, and promoted phenolics accumulation in infected leaves. Exogenous genistein altered the endogenous isoflavone profile, leading to increased genistin levels with strong antibacterial activity against Xag.
PEST MANAGEMENT SCIENCE
(2022)
Article
Horticulture
Ashok Kumar Mahawer, Anil Kumar Dubey, Om Prakash Awasthi, Dinesh Singh, Anil Dahuja, Amitha Mithra Sevanthi, Amrender Kumar, Amit Kumar Goswami, Nimisha Sharma, Jagdish Yadav, Amit Kumar Kesharwani, Abhijeet Shankar Kashyap, Aditya Kulshreshtha, Ravinder Pal Singh, Amrut Morade, Radha Mohan Sharma
Summary: India is a leading citrus-producing country with significant production of lemons and limes. However, its contribution to the global citrus market is limited due to factors like citrus canker. This study investigated the impact of Xanthomonas citri pv. citri on different Citrus spp. and found that susceptible genotypes showed greater degradation in chlorophyll content and reduction in leaf gas exchange parameters compared to resistant genotypes. Resistant genotypes also exhibited higher activities of antioxidant enzymes and phenolics. The results provide insights into the pathogen mechanism and resistance in Citrus species.
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
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
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
Microbiology
Paula M. M. Martins, Thomas K. Wood, Alessandra A. de Souza
Summary: Citrus canker disease, caused by the bacterium Xanthomonas citri subsp. citri, poses a constant threat to citrus-producing areas and requires agricultural practices to limit its spread. Research has shown that X. citri forms dormant cells with reduced metabolism, leading to tolerance to antibiotics. This knowledge could potentially lead to more efficient management practices for controlling the spread of the disease.
Article
Agronomy
Helvio Gledson Maciel Ferraz, Jorge Luis Badel, Yane Fernandes Neves, Ana Carolina Lopes Eloi, Pedro Marcus Pereira Vidigal, Lucio Mauro da Silva Guimaraes, Acelino Couto Alfenas
Summary: The causal agent of bacterial leaf blight (BLB) in eucalypt plants in Brazil has been identified as Xanthomonas spp., with high genetic diversity. The transfer of Xanthomonas axonopodis pv. eucalyptorum to Xanthomonas citri is proposed. These findings are crucial for the management of eucalypt BLB in nurseries and fields.
Article
Plant Sciences
Wenting Li, Zhenxi Li, Ling Zhang, Xiaoling Deng, Zheng Zheng
Summary: This study presents the genome sequence of the oldest X. citri pv. citri strain from historical citrus canker specimens in China, which will contribute to the genomic evolution research of X. citri pv. citri.
Article
Horticulture
Qi Wu, Mingming Zhao, Yi Li, Dazhi Li, Xianfeng Ma, Ziniu Deng
Summary: In this study, the BAK1 gene was identified as a disease resistance gene involved in plant-microbe interaction between citrus and Xcc. Functional investigations of this gene revealed that both CsBAK1 or CmBAK1 could inhibit the growth of Xcc to some extent. Critical regions of the CmBAK1 promoter sequence were identified, and a transcription factor named CmRAP2-13 was found to activate the expression of CmBAK1. Transcriptional analysis showed an increase in CsRAP2-13 levels in Citron C-05, American citron, and Finger citron.
Article
Horticulture
Jyotsana Sharma, Nanjundappa Manjunatha, Somnath S. Pokhare, Prakash G. Patil, Ruchi Agarrwal, Mansi G. Chakranarayan, Anita Aralimar, Priya Devagire, Rajiv A. Marathe
Summary: Xanthomonas axonopodis pv. punicae (Xap) causes bacterial blight disease in pomegranates, resulting in significant economic loss. The lack of resistant varieties and monoculture of susceptible varieties have worsened the problem. Xap has shown low sensitivity to streptomycin under field conditions, and molecular analysis suggests that horizontal gene transfer and gene mutations may be responsible for this lower sensitivity.
Article
Plant Sciences
S. Pazarlar, U. Sanver, N. Cetinkaya
Summary: The study conducted a systematic analysis of the defense responses in D,L-Pip-pretreated cucumber plants against two pathogens. The results showed that exogenously applied D,L-Pip induced SAR against P. xanthii and Psl, leading to increased accumulation of salicylic acid and enhanced defense reactions through ROS production.
Review
Biochemistry & Molecular Biology
Carolina Grandellis, Cecilia V. Vranych, Ainelen Piazza, Betiana S. Garavaglia, Natalia Gottig, Jorgelina Ottado
CURRENT ISSUES IN MOLECULAR BIOLOGY
(2016)
Article
Genetics & Heredity
Carolina Grandellis, Veronica Giammaria, Elisa Fantino, Ignacio Cerrudo, Sandra Bachmann, Franco Santin, Rita M. Ulloa
FUNCTIONAL & INTEGRATIVE GENOMICS
(2016)
Article
Plant Sciences
Florencia A. Ficarra, Carolina Grandellis, Estela M. Galvan, Luis Ielpi, Regina Feil, John E. Lunn, Natalia Gottig, Jorgelina Ottado
MOLECULAR PLANT PATHOLOGY
(2017)
Article
Plant Sciences
Franco Santin, Sneha Bhogale, Elisa Fantino, Carolina Grandellis, Anjan K. Banerjee, Rita M. Ulloa
PHYSIOLOGIA PLANTARUM
(2017)
Article
Plant Sciences
Pooja Sharma, Tian Lin, Carolina Grandellis, Mei Yu, David J. Hannapel
JOURNAL OF EXPERIMENTAL BOTANY
(2014)
Article
Biochemistry & Molecular Biology
Pablo Ruben Gargantini, Veronica Giammaria, Carolina Grandellis, Sergio E. Feingold, Sara Maldonado, Rita Maria Ulloa
PLANT MOLECULAR BIOLOGY
(2009)
Article
Plant Sciences
Veronica Giammaria, Carolina Grandellis, Sandra Bachmann, Pablo Ruben Gargantini, Sergio Enrique Feingold, Glenn Bryan, Rita Maria Ulloa
Article
Plant Sciences
Maria Noelia Muniz Garcia, Veronica Giammaria, Carolina Grandellis, Maria Teresa Tellez-Inon, Rita Maria Ulloa, Daniela Andrea Capiati
Article
Plant Sciences
Carolina Grandellis, Veronica Giammaria, Magali Bialer, Franco Santin, Tian Lin, David J. Hannapel, Rita M. Ulloa
Article
Plant Sciences
Carolina Grandellis, Betiana S. Garavaglia, Natalia Gottig, Caroline Lonez, Jean-Marie Ruysschaert, Jorgelina Ottado
Article
Multidisciplinary Sciences
Carolina Grandellis, Elisa Fantino, Maria Noelia Muniz Garcia, Magali Graciela Bialer, Franco Santin, Daniela Andrea Capiati, Rita Maria Ulloa