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Xylella fastidiosa-vector-host plant interaction and approaches for citrus variegated chlorosis and citrus canker control

Grant number: 13/10957-0
Support type:Research Projects - Thematic Grants
Duration: November 01, 2016 - October 31, 2021
Field of knowledge:Biological Sciences - Genetics - Molecular Genetics and Genetics of Microorganisms
Principal Investigator:Alessandra Alves de Souza
Grantee:Alessandra Alves de Souza
Home Institution: Instituto Agronômico (IAC). Agência Paulista de Tecnologia dos Agronegócios (APTA). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). Campinas , SP, Brazil
Co-Principal Investigators:Joao Roberto Spotti Lopes
Assoc. researchers:Camila Caldana ; Helvecio Della Coletta Filho ; Marco Aurélio Takita ; Marcos Antonio Machado ; Mônica Alonso Cotta
Associated grant(s):17/20487-2 - European Conference on Xylella fastidiosa: finding answers to a global problem, AR.EXT
Associated scholarship(s):20/04795-1 - Transformation of sweet orange varieties for functional study and / or gene editing for resistance to citrus bacterial diseases, BP.TT
19/13222-8 - Use of citrus plants for the functional study of genes associated with resistance to citrus variegated chlorosis and citrus canker, BP.TT
19/04568-8 - Maintenance and characterization of transgenic citrus elite events with potential field trials, BP.TT
+ associated scholarships 19/04722-7 - Evaluation of the role of adhesins in biofilm formation by Xylella fastidiosa subsp. pauca on polysaccharide surface, BP.TT
19/01447-5 - Getting transgenic rootstock: possibility of increasing levels of scion resistance to phytopathogens through the translocation of diffusible molecules, BP.PD
18/19980-9 - N-acetylcysteine in acquisition and transmission studies of Xylella fastidiosa in citrus, BP.MS
18/18551-7 - Development and evaluation of Swingle rootstocks transformed with the rpfF gene of Xylella fastidiosa, BP.IC
18/14356-5 - Acquisition efficiency of Xylella fastidiosa in artificial diets by different sharpshooter species, BP.TT
17/14398-7 - III-V semiconductor nanowires as new tools for biology investigations, BP.PD
15/24271-9 - P-N junctions in III-V semiconductor nanowires: a platform for applied studies, BP.DR
17/25520-8 - Evaluation of the TA system in the inhibition of X. citri PAMPs in copper stress and PTI repression in sweet orange, BP.IC
18/03868-5 - Use of citrus and model plants for functional study of genes associated with resistance to citrus variegated chlorosis and citrus canker disease, BP.TT
17/13885-1 - Use of CRISPR/Cas9 in the editing of susceptibility genes of citrus sinensis to Xanthomonas citri subsp. Citri, BP.DR
17/16142-0 - Translocation of quorum sensing molecules from transgenic rootstocks to sweet orange canopies: effect on resistance against phytopathogens, BP.PD
16/20629-9 - Obtaining of the rootstock Swingle transformed with rpfF gene of Xylella fastidiosa, BP.IC - associated scholarships


Citrus Variegated Chlorosis (CVC), caused by Xylella fastidiosa subsp. pauca bacterium, is one of the most concerning diseases for the Brazilian citriculture. It is responsible for economic damages around 100 million dollars a year in eradication of diseased plants, replanting, and chemical control of the vectors. CVC is a typical Brazilian problem since in other South or Central American countries, where the disease has already been reported, the citrus industry is not as important as it is in Brazil. Therefore it is a role of the research here in Brazil to study and propose alternatives for the control and/or propose a more efficient and sustainable management with reduced production costs. In these 15 years from the X. fastidiosa genome sequencing much basic knowledge was generated, turning it into one of the ten most studied bacteria in the world. However, few of these studies focused on the interactions among the components of this pathosystem, bacterium-plant-vector. This project aims at the integration of groups that work with X. fastidiosa to enlarge and associate the information of the genetic mechanisms that contribute to the adaptation efficiency of the bacterium, the relationship between colonization in the host and disease expression, the molecular interaction with the insect vector, and the genetic responses of the plant that could be used in medium or long term to control the damages caused by CVC in a more sustainable way and with reduced production costs. In addition to X. fastidiosa, the project proposes to expand the studies to Xanthomonas citri subsp. citri, the causal agent of Citrus Canker disease. This disease has become a greater problem in São Paulo orchards, due to recent changes in regulation regarding the control of Citrus Canker. Thus, because of the similarities between the two plant pathogens and common host, some approaches and control strategies will be used for both plant pathogens X. fastidiosa and X. citri. (AU)

Articles published in Agência FAPESP Newsletter about the research grant
Molecule used as a mucolytic fights bacterial diseases in agricultural crops  

Scientific publications (9)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MOREIRA MARTINS, PAULA MARIA; ANDRADE, MAXUEL DE OLIVEIRA; BENEDETTI, CELSO EDUARDO; DE SOUZA, ALESSANDRA ALVES. Xanthomonas citri subsp. citri: host interaction and control strategies. TROPICAL PLANT PATHOLOGY, JUN 2020. Web of Science Citations: 0.
GRANATO, LAIS MOREIRA; PICCHI, SIMONE CRISTINA; ANDRADE, MAXUEL DE OLIVEIRA; MARTINS, PAULA MARIA MOREIRA; TAKITA, MARCO AURELIO; MACHADO, MARCOS ANTONIO; DE SOUZA, ALESSANDRA ALVES. The ecnA Antitoxin Is Important Not Only for Human Pathogens: Evidence of Its Role in the Plant Pathogen Xanthomonas citri subsp. citri. Journal of Bacteriology, v. 201, n. 20 OCT 2019. Web of Science Citations: 0.
UGARTE, DANIEL; TIZEI, LUIZ H. G.; COTTA, MONICA A.; DUCATI, CATERINA; MIDGLEY, PAUL A.; EGGEMAN, ALEXANDER S. Analysis of structural distortion in Eshelby twisted InP nanowires by scanning precession electron diffraction. NANO RESEARCH, v. 12, n. 4, p. 939-946, APR 2019. Web of Science Citations: 0.
PEREIRA, W. E. L.; FERREIRA, C. B.; CASERTA, R.; MELOTTO, M.; DE SOUZA, A. A. Xylella fastidiosa subsp. pauca and fastidiosa Colonize Arabidopsis Systemically and Induce Anthocyanin Accumulation in Infected Leaves. PHYTOPATHOLOGY, v. 109, n. 2, p. 225-232, FEB 2019. Web of Science Citations: 1.
DA SILVA, ALDELIANE M.; SAHOO, PRASANA K.; CAVALLI, ALESSANDRO; DE SOUZA, ALESSANDRA A.; BAKKERS, ERIK P. A. M.; CESAR, CARLOS L.; JANISSEN, RICHARD; COTTA, MONICA A. Nanowire Arrays as Force Sensors with Super-Resolved Localization Position Detection: Application to Optical Measurement of Bacterial Adhesion Forces. SMALL METHODS, v. 2, n. 7 JUL 10 2018. Web of Science Citations: 4.
VAZ, JULIANA M.; TAKETA, THIAGO B.; HERNANDEZ-MONTELONGO, JACOBO; CHEVALLIER, PASCALE; COTTA, MONICA A.; MANTOVANI, DIEGO; BEPPU, MARISA M. Antibacterial properties of chitosan-based coatings are affected by spacer-length and molecular weight. Applied Surface Science, v. 445, p. 478-487, JUL 1 2018. Web of Science Citations: 7.
MARTINS, PAULA M. M.; MERFA, MARCUS V.; TAKITA, MARCO A.; DE SOUZA, ALESSANDRA A. Persistence in Phytopathogenic Bacteria: Do We Know Enough?. FRONTIERS IN MICROBIOLOGY, v. 9, MAY 25 2018. Web of Science Citations: 13.
CASERTA, R.; SOUZA-NETO, R. R.; TAKITA, M. A.; LINDOW, S. E.; DE SOUZA, A. A. Ectopic Expression of Xylella fastidiosa rpfF Conferring Production of Diffusible Signal Factor in Transgenic Tobacco and Citrus Alters Pathogen Behavior and Reduces Disease Severity. MOLECULAR PLANT-MICROBE INTERACTIONS, v. 30, n. 11, p. 866-875, NOV 2017. Web of Science Citations: 6.
NIZA, BARBARA; MERFA, MARCUS V.; ALENCAR, VALQUIRIA C.; MENEGIDIO, FABIANO B.; NUNES, LUIZ R.; MACHADO, MARCOS A.; TAKITA, MARCO A.; DE SOUZA, ALESSANDRA A. Draft Genome Sequence of 11399, a Transformable Citrus-Pathogenic Strain of Xylella fastidiosa. MICROBIOLOGY RESOURCE ANNOUNCEMENTS, v. 4, n. 5 SEP-OCT 2016. Web of Science Citations: 0.

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