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2022
Lima, Lídia Passos; Pereira, Juliana Biar; Flores, Anthony Jhoao Fasabi; Lorenzetti, Alan Péricles Rodrigues; Boechat, Ana Laura; Pereda, Maria Claudia; Gualtieri, Sophia; Prado, Daniele Ferreira; Rocha, Diego; Ceseti, Lucas Moraes; Baldini, Regina Lúcia; Farah, Chuck S.; Koide, Tie; Benedetti, Celso Eduardo; Alvarez-Martinez, Cristina E.
An Extracytoplasmic Function Sigma Factor Required for Full Virulence in Xanthomonas citri pv. citri Journal Article
Em: Journal of Bacteriology, vol. 204, iss. 5, 2022, ISSN: 10985530.
Resumo | Links | BibTeX | Tags: phytopathogens, regulation of gene expression, sigma factors
@article{nokey,
title = {An Extracytoplasmic Function Sigma Factor Required for Full Virulence in Xanthomonas citri pv. citri},
author = {Lídia Passos Lima and Juliana Biar Pereira and Anthony Jhoao Fasabi Flores and Alan Péricles Rodrigues Lorenzetti and Ana Laura Boechat and Maria Claudia Pereda and Sophia Gualtieri and Daniele Ferreira Prado and Diego Rocha and Lucas Moraes Ceseti and Regina Lúcia Baldini and Chuck S. Farah and Tie Koide and Celso Eduardo Benedetti and Cristina E. Alvarez-Martinez},
url = {https://journals.asm.org/doi/10.1128/jb.00624-21},
doi = {10.1128/JB.00624-21/SUPPL_FILE/JB.00624-21-S0002.XLSX},
issn = {10985530},
year = {2022},
date = {2022-01-01},
journal = {Journal of Bacteriology},
volume = {204},
issue = {5},
publisher = {American Society for Microbiology},
abstract = {The genus Xanthomonas includes more than 30 phytopathogenic species that infect a wide range of plants and cause severe diseases that greatly impact crop productivity. These bacteria are highly adapted to the soil and plant environment, being found in decaying material, as epiphytes, and colonizing the plant mesophyll. Signal transduction mechanisms involved in the responses of Xanthomonas to environmental changes are still poorly characterized. Xanthomonad genomes typically encode several representatives of the extracytoplasmic function s (s ECF) factors, whose physiological roles remain elusive. In this work, we functionally characterized the Xanthomonas citri pv. citri EcfL, a s ECF factor homologous to members of the iron-responsive FecI-like group. We show that EcfL is not required or induced during iron starvation, despite presenting the common features of other FecI-like s ECF factors. EcfL positively regulates one operon composed of three genes that encode a TonB-dependent receptor involved in cell surface signaling, an acid phosphatase, and a lectin-domain containing protein. Furthermore, we demonstrate that EcfL is required for full virulence in citrus, and its regulon is induced inside the plant mesophyll and in response to acid stress. Together, our study suggests a role for EcfL in the adaptation of X. citri to the plant environment, in this way contributing to its ability to cause citrus canker disease.},
keywords = {phytopathogens, regulation of gene expression, sigma factors},
pubstate = {published},
tppubtype = {article}
}
The genus Xanthomonas includes more than 30 phytopathogenic species that infect a wide range of plants and cause severe diseases that greatly impact crop productivity. These bacteria are highly adapted to the soil and plant environment, being found in decaying material, as epiphytes, and colonizing the plant mesophyll. Signal transduction mechanisms involved in the responses of Xanthomonas to environmental changes are still poorly characterized. Xanthomonad genomes typically encode several representatives of the extracytoplasmic function s (s ECF) factors, whose physiological roles remain elusive. In this work, we functionally characterized the Xanthomonas citri pv. citri EcfL, a s ECF factor homologous to members of the iron-responsive FecI-like group. We show that EcfL is not required or induced during iron starvation, despite presenting the common features of other FecI-like s ECF factors. EcfL positively regulates one operon composed of three genes that encode a TonB-dependent receptor involved in cell surface signaling, an acid phosphatase, and a lectin-domain containing protein. Furthermore, we demonstrate that EcfL is required for full virulence in citrus, and its regulon is induced inside the plant mesophyll and in response to acid stress. Together, our study suggests a role for EcfL in the adaptation of X. citri to the plant environment, in this way contributing to its ability to cause citrus canker disease.
Lima, Lídia Passos; Pereira, Juliana Biar; Flores, Anthony Jhoao Fasabi; Lorenzetti, Alan Péricles Rodrigues; Boechat, Ana Laura; Pereda, Maria Claudia; Gualtieri, Sophia; Prado, Daniele Ferreira; Rocha, Diego; Ceseti, Lucas Moraes; Baldini, Regina Lúcia; Farah, Chuck S.; Koide, Tie; Benedetti, Celso Eduardo; Alvarez-Martinez, Cristina E.
An Extracytoplasmic Function Sigma Factor Required for Full Virulence in Xanthomonas citri pv. citri Journal Article
Em: Journal of Bacteriology, vol. 204, iss. 5, 2022, ISSN: 10985530.
Resumo | Links | BibTeX | Tags: phytopathogens, regulation of gene expression, sigma factors
@article{nokey,
title = {An Extracytoplasmic Function Sigma Factor Required for Full Virulence in Xanthomonas citri pv. citri},
author = {Lídia Passos Lima and Juliana Biar Pereira and Anthony Jhoao Fasabi Flores and Alan Péricles Rodrigues Lorenzetti and Ana Laura Boechat and Maria Claudia Pereda and Sophia Gualtieri and Daniele Ferreira Prado and Diego Rocha and Lucas Moraes Ceseti and Regina Lúcia Baldini and Chuck S. Farah and Tie Koide and Celso Eduardo Benedetti and Cristina E. Alvarez-Martinez},
url = {https://journals.asm.org/doi/10.1128/jb.00624-21},
doi = {10.1128/JB.00624-21/SUPPL_FILE/JB.00624-21-S0002.XLSX},
issn = {10985530},
year = {2022},
date = {2022-01-01},
journal = {Journal of Bacteriology},
volume = {204},
issue = {5},
publisher = {American Society for Microbiology},
abstract = {The genus Xanthomonas includes more than 30 phytopathogenic species that infect a wide range of plants and cause severe diseases that greatly impact crop productivity. These bacteria are highly adapted to the soil and plant environment, being found in decaying material, as epiphytes, and colonizing the plant mesophyll. Signal transduction mechanisms involved in the responses of Xanthomonas to environmental changes are still poorly characterized. Xanthomonad genomes typically encode several representatives of the extracytoplasmic function s (s ECF) factors, whose physiological roles remain elusive. In this work, we functionally characterized the Xanthomonas citri pv. citri EcfL, a s ECF factor homologous to members of the iron-responsive FecI-like group. We show that EcfL is not required or induced during iron starvation, despite presenting the common features of other FecI-like s ECF factors. EcfL positively regulates one operon composed of three genes that encode a TonB-dependent receptor involved in cell surface signaling, an acid phosphatase, and a lectin-domain containing protein. Furthermore, we demonstrate that EcfL is required for full virulence in citrus, and its regulon is induced inside the plant mesophyll and in response to acid stress. Together, our study suggests a role for EcfL in the adaptation of X. citri to the plant environment, in this way contributing to its ability to cause citrus canker disease.},
keywords = {phytopathogens, regulation of gene expression, sigma factors},
pubstate = {published},
tppubtype = {article}
}
The genus Xanthomonas includes more than 30 phytopathogenic species that infect a wide range of plants and cause severe diseases that greatly impact crop productivity. These bacteria are highly adapted to the soil and plant environment, being found in decaying material, as epiphytes, and colonizing the plant mesophyll. Signal transduction mechanisms involved in the responses of Xanthomonas to environmental changes are still poorly characterized. Xanthomonad genomes typically encode several representatives of the extracytoplasmic function s (s ECF) factors, whose physiological roles remain elusive. In this work, we functionally characterized the Xanthomonas citri pv. citri EcfL, a s ECF factor homologous to members of the iron-responsive FecI-like group. We show that EcfL is not required or induced during iron starvation, despite presenting the common features of other FecI-like s ECF factors. EcfL positively regulates one operon composed of three genes that encode a TonB-dependent receptor involved in cell surface signaling, an acid phosphatase, and a lectin-domain containing protein. Furthermore, we demonstrate that EcfL is required for full virulence in citrus, and its regulon is induced inside the plant mesophyll and in response to acid stress. Together, our study suggests a role for EcfL in the adaptation of X. citri to the plant environment, in this way contributing to its ability to cause citrus canker disease.