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2021
Caccalano, M. N.; Dilarri, G.; Zamuner, C. F. C.; Domingues, D. S.; Ferreira, H.
Hexanoic acid: a new potential substitute for copper-based agrochemicals against citrus canker Journal Article
Em: Journal of Applied Microbiology, vol. 131, iss. 5, pp. 2488-2499, 2021, ISSN: 1365-2672.
Resumo | Links | BibTeX | Tags: cell division, Disease management, membrane permeabilization, organic acid, phytotoxicity, Xanthomonas citri
@article{Caccalano2021,
title = {Hexanoic acid: a new potential substitute for copper-based agrochemicals against citrus canker},
author = {M. N. Caccalano and G. Dilarri and C. F. C. Zamuner and D. S. Domingues and H. Ferreira},
url = {https://onlinelibrary.wiley.com/doi/full/10.1111/jam.15125 https://onlinelibrary.wiley.com/doi/abs/10.1111/jam.15125 https://ami-journals.onlinelibrary.wiley.com/doi/10.1111/jam.15125},
doi = {10.1111/JAM.15125},
issn = {1365-2672},
year = {2021},
date = {2021-01-01},
journal = {Journal of Applied Microbiology},
volume = {131},
issue = {5},
pages = {2488-2499},
publisher = {John Wiley & Sons, Ltd},
abstract = {Aims: The aim of the study is to evaluate hexanoic acid (HA) as an alternative to manage citrus canker. Methods and Results: The minimal growth inhibitory concentration of HA against Xanthomonas citri subsp. citri was determined at 2·15 mmol l−1 using a respiratory activity assay. Growth curves at different pH values showed that growth inhibition was not due to media acidification induced by HA. The germination rate and root elongation of Lactuca sativa seeds exposed to different concentrations of HA (varying from 0·86 to 5·16 mmol l−1) were assessed to screen for phytotoxicity. The acid exhibited low phytotoxicity for L. sativa at 1·29 and 2·58 mmol l−1. To evaluate the ability of HA to protect citrus against X. citri infection, leaves of Citrus sinensis were sprayed with the acid and subsequently challenged with X. citri. HA at 3·44 mmol l−1 was able to protect citrus against infection, showing a reduction of three orders of magnitude in the number of citrus canker lesions per cm2 when compared to the untreated negative control. Conclusion: HA is a potential alternative to copper for citrus canker management. Significance and Impact of the Study: HA inhibits X. citri growth, exhibits low phytotoxicity and is an alternative to copper for the protection of citrus plants against bacterial infection.},
keywords = {cell division, Disease management, membrane permeabilization, organic acid, phytotoxicity, Xanthomonas citri},
pubstate = {published},
tppubtype = {article}
}
Aims: The aim of the study is to evaluate hexanoic acid (HA) as an alternative to manage citrus canker. Methods and Results: The minimal growth inhibitory concentration of HA against Xanthomonas citri subsp. citri was determined at 2·15 mmol l−1 using a respiratory activity assay. Growth curves at different pH values showed that growth inhibition was not due to media acidification induced by HA. The germination rate and root elongation of Lactuca sativa seeds exposed to different concentrations of HA (varying from 0·86 to 5·16 mmol l−1) were assessed to screen for phytotoxicity. The acid exhibited low phytotoxicity for L. sativa at 1·29 and 2·58 mmol l−1. To evaluate the ability of HA to protect citrus against X. citri infection, leaves of Citrus sinensis were sprayed with the acid and subsequently challenged with X. citri. HA at 3·44 mmol l−1 was able to protect citrus against infection, showing a reduction of three orders of magnitude in the number of citrus canker lesions per cm2 when compared to the untreated negative control. Conclusion: HA is a potential alternative to copper for citrus canker management. Significance and Impact of the Study: HA inhibits X. citri growth, exhibits low phytotoxicity and is an alternative to copper for the protection of citrus plants against bacterial infection.
2020
Carmo-Sousa, Michele; Cortés, Mayerli Tatiana Borbón; Lopes, João Roberto Spotti
Understanding psyllid transmission of Candidatus Liberibacter as a basis for managing huanglongbing Journal Article
Em: Tropical Plant Pathology, vol. 45, iss. 6, pp. 572-585, 2020, ISSN: 19832052.
Resumo | Links | BibTeX | Tags: Asian citrus psyllid, Disease management, HLB, Vector-pathogen interactions
@article{nokey,
title = {Understanding psyllid transmission of Candidatus Liberibacter as a basis for managing huanglongbing},
author = {Michele Carmo-Sousa and Mayerli Tatiana Borbón Cortés and João Roberto Spotti Lopes},
url = {https://link.springer.com/article/10.1007/s40858-020-00386-1},
doi = {10.1007/S40858-020-00386-1/METRICS},
issn = {19832052},
year = {2020},
date = {2020-01-01},
journal = {Tropical Plant Pathology},
volume = {45},
issue = {6},
pages = {572-585},
publisher = {Springer Science and Business Media Deutschland GmbH},
abstract = {Citrus huanglongbing (HLB) represents a major threat to citriculture due to its rapid spread, difficulty of control, severe yield losses, and substantial increases in production costs in HLB-affected orchards. Successful management depends on detailed knowledge of the epidemiology of this disease, which is associated with phloem-limited bacteria of the genus Candidatus Liberibacter that are transmitted by phloem sap–feeding insects known as psyllids (Hemiptera: Psylloidea). Candidatus L. asiaticus (CLas) and the Asian citrus psyllid Diaphorina citri Kuwayama are the major etiological agent and vector, respectively, in the Americas and Asia. This review provides up-to-date information on the relationships of psyllid vectors with Ca. Liberibacter spp. associated with HLB, with emphasis on D. citri and CLas. Knowledge of the transmission mechanisms of these bacteria, as well as aspects of the biology, ecology, and behavior of the vector in relation to the environment, is essential to gain understanding of the HLB epidemics. Such knowledge provides a basis for developing innovative control methods and establishing sustainable management strategies for HLB.},
keywords = {Asian citrus psyllid, Disease management, HLB, Vector-pathogen interactions},
pubstate = {published},
tppubtype = {article}
}
Citrus huanglongbing (HLB) represents a major threat to citriculture due to its rapid spread, difficulty of control, severe yield losses, and substantial increases in production costs in HLB-affected orchards. Successful management depends on detailed knowledge of the epidemiology of this disease, which is associated with phloem-limited bacteria of the genus Candidatus Liberibacter that are transmitted by phloem sap–feeding insects known as psyllids (Hemiptera: Psylloidea). Candidatus L. asiaticus (CLas) and the Asian citrus psyllid Diaphorina citri Kuwayama are the major etiological agent and vector, respectively, in the Americas and Asia. This review provides up-to-date information on the relationships of psyllid vectors with Ca. Liberibacter spp. associated with HLB, with emphasis on D. citri and CLas. Knowledge of the transmission mechanisms of these bacteria, as well as aspects of the biology, ecology, and behavior of the vector in relation to the environment, is essential to gain understanding of the HLB epidemics. Such knowledge provides a basis for developing innovative control methods and establishing sustainable management strategies for HLB.
Carmo-Sousa, Michele; Cortés, Mayerli Tatiana Borbón; Lopes, João Roberto Spotti
Understanding psyllid transmission of Candidatus Liberibacter as a basis for managing huanglongbing Journal Article
Em: Tropical Plant Pathology, vol. 45, iss. 6, pp. 572-585, 2020, ISSN: 19832052.
Resumo | Links | BibTeX | Tags: Asian citrus psyllid, Disease management, HLB, Vector-pathogen interactions
@article{nokey,
title = {Understanding psyllid transmission of Candidatus Liberibacter as a basis for managing huanglongbing},
author = {Michele Carmo-Sousa and Mayerli Tatiana Borbón Cortés and João Roberto Spotti Lopes},
url = {https://link.springer.com/article/10.1007/s40858-020-00386-1},
doi = {10.1007/S40858-020-00386-1/METRICS},
issn = {19832052},
year = {2020},
date = {2020-01-01},
journal = {Tropical Plant Pathology},
volume = {45},
issue = {6},
pages = {572-585},
publisher = {Springer Science and Business Media Deutschland GmbH},
abstract = {Citrus huanglongbing (HLB) represents a major threat to citriculture due to its rapid spread, difficulty of control, severe yield losses, and substantial increases in production costs in HLB-affected orchards. Successful management depends on detailed knowledge of the epidemiology of this disease, which is associated with phloem-limited bacteria of the genus Candidatus Liberibacter that are transmitted by phloem sap–feeding insects known as psyllids (Hemiptera: Psylloidea). Candidatus L. asiaticus (CLas) and the Asian citrus psyllid Diaphorina citri Kuwayama are the major etiological agent and vector, respectively, in the Americas and Asia. This review provides up-to-date information on the relationships of psyllid vectors with Ca. Liberibacter spp. associated with HLB, with emphasis on D. citri and CLas. Knowledge of the transmission mechanisms of these bacteria, as well as aspects of the biology, ecology, and behavior of the vector in relation to the environment, is essential to gain understanding of the HLB epidemics. Such knowledge provides a basis for developing innovative control methods and establishing sustainable management strategies for HLB.},
keywords = {Asian citrus psyllid, Disease management, HLB, Vector-pathogen interactions},
pubstate = {published},
tppubtype = {article}
}
Citrus huanglongbing (HLB) represents a major threat to citriculture due to its rapid spread, difficulty of control, severe yield losses, and substantial increases in production costs in HLB-affected orchards. Successful management depends on detailed knowledge of the epidemiology of this disease, which is associated with phloem-limited bacteria of the genus Candidatus Liberibacter that are transmitted by phloem sap–feeding insects known as psyllids (Hemiptera: Psylloidea). Candidatus L. asiaticus (CLas) and the Asian citrus psyllid Diaphorina citri Kuwayama are the major etiological agent and vector, respectively, in the Americas and Asia. This review provides up-to-date information on the relationships of psyllid vectors with Ca. Liberibacter spp. associated with HLB, with emphasis on D. citri and CLas. Knowledge of the transmission mechanisms of these bacteria, as well as aspects of the biology, ecology, and behavior of the vector in relation to the environment, is essential to gain understanding of the HLB epidemics. Such knowledge provides a basis for developing innovative control methods and establishing sustainable management strategies for HLB.