Researcher/ PI at the Brazilian Agricultural Research Corporation since 2002, working in collaboration with the São Paulo Agribusiness Technology Agency (APTA). BS in Agronomy from the University of São Paulo (USP, 1993), Master's degree in Plant Pathology from USP (1996), PhD in Plant Virology from University of Florida (2001) and post-doctorate from USP (2002). Associate editor of the journals Plant Pathology, Annals of Applied Biology, and Tropical Plant Pathology, and guest editor of the journals Frontiers in Plant Science and Frontiers in Microbiology. Is a member of the Executive Committee of the International Committee on Taxonomy of Viruses (ICTV, 2023-2026). served as the co-chairperson of the family Rhabdoviridae Study Group (SG) of the ICTV (2020-2023), and has been a member of this SG since 2018. Chairperson of genus Cilevirus SG for the period 2011-2014 and still a member of this SG (now called family Kitaviridae SG) since 2015. Chairperson of the International Organization of Citrus Virologists (IOCV) for the period from 2013 to 2016, and still serves on the Advisory Council of this Organization (2016-2019, 2019-2023). Project 111 member and visiting professor at Southwest University in Chongqing, China (2018-2022). Member of the International Panel for the elaboration of protocols for the diagnosis of citrus leprosis for the International Plant Protection Convention (IPPC/FAO) (effective 2020-2024). President of the Brazilian Society of Phytopathology (SBF, 2021-2025). My primarily interests involve the following topics: plant-pathogen-vector interactions, plant viruses, citrus leprosis, viruses transmitted by Brevipalpus mites, HLB or citrus greening, transcriptomics, and functional genomics. Email: juliana.astua@embrapa.br (Source: Lattes Curriculum)
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Knowledge on the Citrus Leprosis pathosystem (CL), one of the most importante citrus diseases in the state of São Paulo, gained exponential increase in the last 20 years. Its main causal agente, Citrus Leprosis Virus (CiLV-C), transmitted by Brevipalpus mites, was thoroughly characterized and the management of CL was immensely helped by the epidemiological data yielded. In the wake of the…
Instituto Biológico (IB) is a research center coordinated by the São Paulo Agribusiness Technology Agency (APTA), the Secretariat of Agriculture and Supply of the State of São Paulo (SAA) and its mission is to "Develop and transfer scientific and technological knowledge for the agricultural business in the areas of animal and plant health, its relations with the environment, aiming at imp…
Pathogens present one of the major constraints on production yields and with nearly 50% of all newly emerging diseases caused by viruses, stresses the importance for continuing development of integrated virus management (IVM) strategies. The 1) emergence (2016) of new recombinant geminivirus in cultivations of tomato bearing the Ty-1 resistance gene; 2) observation (2014) that mixed infec…
Brevipalpus-transmitted viruses (BTV) are known since early XXth century, but detailed knowledge about them only became available in the last 15 years. Great efforts were made especially on the most economically important among BTV, the Citrus leprosis virus C (CiLV-C) which resulted in the understanding of its molecular nature, relationship with the host plants and the vector and its epi…
(Only some records are available in English at this moment)
PfGSV is the cilevirus with largest natural host range known.Symptoms caused by PfGSV in infected plants are usually large patches of chlorotic blotches or spots, or alternatively, green patches in yellow leaves, contrasting with those caused by other cileviruses (citrus leprosis C, solanum violifolium ringspot), which tend to be smaller chlorotic or necrotic spots. PfGSV genome differs r…
Brazil is the largest producer and consumer of passion fruit (Passifora spp.) in the world, including the use of products derived from the fruit. The crop generates thousands of jobs, directly and indirectly, in addition to being an important source of income for small and medium producers. The passion fruit is affected by several diseases, including "definhamento precoce" and green spot …
Brazil is responsible for 56% of the world orange juice production; however, its productivity is frequently affected by several diseases such as citrus leprosis (CL), caused by Brevipalpus mites transmitted viruses (BTVs). BTVs induce chlorotic and/or necrotic localized lesions in fruits, leaves and branches; under natural conditions, they do not systemically infect plants. BTVs belong to…
Citrus leprosis (CL) is the most important viral disease affecting the Brazilian citriculture. Although caused by viruses of different species, the cilevirus citrus leprosis virus C (CiLV-C) is the prevalent causal agent in the country. Two different strains of CiLV-C, known as CiLV-C_SJP (São José do Rio Preto) and CiLV-C_CRD (Cordeirópolis), are unevenly spread throughout the Brazilian …
(Only some records are available in English at this moment)
Citrus leprosis virus C (CiLV-C) is the prevalent viral species associated with citrus leprosis disease from Mexico to Argentina. CiLV-C, the type member of the genus Cilevirus, family Kitaviridae, has a genome composed of two (+)ssRNA molecules that encode six open reading frames (ORFs), two in the RNA1 (RdRp and p29); and four in the RNA2 (p15, p61, MP, and p24). Experimentally, CiLV-C …
The movement protein (MP) of plant virus is essential to ensure the spread viral into the cell and to neighboring cells facilitating the success of infection. Citrus leprosis disease mainly is caused by viruses of genera Cilevirus and Dichorhavirus. There is also a single report of leprosis-like symptoms in Volkamerian lemon in Hawaii caused by a species of the genus Higrevirus. Regardles…
| 1 / 1 | Ongoing grants |
| 5 / 4 | Completed research grants |
| 1 / 1 | Ongoing scholarships in Brazil |
| 22 / 18 | Completed scholarships in Brazil |
| 2 / 2 | Completed scholarships abroad |
| 31 / 26 | All research grants and scholarships |
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