A5020062314- Plant Virus Research Studies
- Insect-Plant Interactions and Control
- Insect symbiosis and bacterial influences
- Plant Pathogenic Bacteria Studies
- Banana Cultivation and Research
- Plant Pathogens and Fungal Diseases
- Animal Virus Infections Studies
- Legume Nitrogen Fixing Symbiosis
- Plant Parasitism and Resistance
- Nematode management and characterization studies
- Agricultural pest management studies
- Psidium guajava Extracts and Applications
- Agronomic Practices and Intercropping Systems
- Science and Education Research
- Education during COVID-19 pandemic
- Cultural, Media, and Literary Studies
- Cassava research and cyanide
- Insect Pest Control Strategies
- Education and Digital Technologies
- Plant Disease Management Techniques
- Research in Cotton Cultivation
- Viral Infections and Vectors
- Soybean genetics and cultivation
- Transgenic Plants and Applications
- Plant tissue culture and regeneration
Universidade Estadual Paulista (Unesp)
2020-2024
Universidade Federal de Viçosa
2017-2023
Universidade Federal do Espírito Santo
2014-2020
Departamento de Ciência e Tecnologia
2014
The emergence of begomoviruses (whitefly-transmitted viruses classified in the genus Begomovirus, family Geminiviridae) Brazil probably occurred by horizontal transfer from non-cultivated plants after introduction Bemisia tabaci MEAM1. centre diversity Euphorbia heterophylla (Euphorbiaceae) is located and Paraguay, where it an invasive species soybean other crops. Reports possible begomovirus infection E. date back to 1950s. In 2011, yellow mosaic virus (EuYMV) was described symptomatic...
Abstract Since the detection of Bemisia tabaci Middle East‐Asia Minor 1 (MEAM1) species in Brazil early 1990s, this whitefly has been predominant and main viral vector country. In work, whiteflies were collected from commercial soybean fields near far greenhouses where Mediterranean (MED) had previously detected infesting vegetable crops. Results indicated that MEAM1 was most sampling sites, while MED found colonizing plants open field conditions alone and/or with several places. Among...
Abstract Begomoviruses cause losses in several crops around the world. Whiteflies of Bemisia tabaci cryptic species MEAM1 and MED are efficient vectors begomoviruses. has been predominant Brazil since mid‐1990s. was detected 2014, then, high insect infestations have reported, mainly greenhouse production solanaceous crops. In this study, we compared transmission efficiency begomoviruses tomato severe rugose virus (ToSRV) mosaic (ToRMV) to ( Solanum lycopersicum ) bean golden (BGMV) common...
Soybean stem necrosis is caused by cowpea mild mottle virus (CPMMV), transmitted the whitefly Bemisia tabaci . CPMMV has already been recorded in all major soybean-producing areas of Brazil. The impacts to current Brazilian soybean production are unknown, thus main objective this study was evaluate effects infection on important cultivars grown Southern and Midwestern regions Although asymptomatic some tested cultivars, significantly reduced plant height, number pods per 1,000-grain weight....
Cowpea mild mottle virus (CPMMV, genus Carlavirus, family Betaflexividae) is an economically important infecting soybeans in Brazil, where it was initially identified 1983. CPMMV transmitted by the whitefly, Bemisia tabaci, and occasionally seeds. Over last three decades, most invasive B. tabaci Middle East–Asia Minor 1 (MEAM1), lately Mediterranean (MED) cryptic species, have replaced indigenous species with MEAM1 being predominant. In this study, we investigated transmission properties of...
Begomoviruses can be found in association with alphasatellites, which are capable of autonomous replication but dependent on the helper begomovirus for systemic infection, encapsidation and vector transmission. Previous studies suggest that presence NW alphasatellites (genus Clecrusatellite) is associated more severe symptoms. To better understand this interaction, we investigated effects two infectivity, symptom development, viral DNA accumulation transmission three begomoviruses hosts. In...
The family Myrtaceae is widespread in the Atlantic Forest and well-represented Espírito Santo State Brazil.In genus Psidium of this family, guava (Psidium guajava L.) most economically important species.Guava widely cultivated tropical subtropical countries; however, cultivation only a small number tree cultivars may cause genetic vulnerability crop, making search for promising genotypes natural populations breeding programs conservation.In study, diversity 66 trees sampled southern region...
Abstract The tomato chlorosis virus (ToCV), transmitted by whitefly species of the genera Bemisia and Trialeurodes in a semipersistent manner, causes significant losses solanaceous crops including ( Solanum lycopersicum ) sweet pepper Capsicum annuum ). Worldwide reports natural experimental infection plants with ToCV are contradictory, raising question whether critical factor determining is related to susceptibility cultivars or genetics isolates. In this work, isolates obtained from...
Begomoviruses (single-stranded DNA plant viruses transmitted by whiteflies) are economically important pathogens causing epidemics worldwide. Tomato-infecting begomoviruses emerged in Brazil the 1990's following introduction of Bemisia tabaci Middle East-Asia Minor 1. It is believed that these evolved from indigenous infecting non-cultivated hosts. However, tomato-infecting rarely found hosts, and vice-versa. possible viral populations a given host composed primarily which well adapted to...
The necessity of a competent vector for transmission is primary ecological factor driving the host range expansion plant arthropod-borne viruses, with vectors playing an essential role in disease emergence. Cassava begomoviruses severely constrain cassava production Africa. Curiously, have never been reported South America, center origin this crop. It has hypothesized that absence reason why not emerged America.We performed country-wide whitefly diversity study Brazil. Adults and/or nymphs...
In vitro propagation of Psidium guajava L. has been significant for breeding programs and conservation. Hereby, distinct explants are chosen inoculated into media supplemented mainly with the growth regulators 6-benzylaminopurine (BAP) α-naphthaleneacetic acid (NAA). As have considered main inducers somaclonal variation (SV), this study verified occurrence karyotype DNA sequence in P. ‘Paluma’ ‘Cortibel XIII’ plantlets. Plantlets propagated different media—4.44 µM BAP, 4.44 BAP/0.54 NAA, or...
Mixed infection between two or more begomoviruses is commonly found in tomato fields and can affect disease outcomes by increasing symptom severity viral accumulation compared with single infection. Viruses that include severe rugose virus (ToSRV) mosaic (ToRMV). Previous work showed mixed infection, ToRMV negatively affects the infectivity of ToSRV. ToSRV share a high degree sequence identity, including cis-elements common region (CR) their specific recognition sites (iteron-related domain,...
Abstract Six patchouli ( Pogostemon cablin Benth.) plants showing symptoms of viral infection were found in Brazil. Transmission electron microscopy revealed flexuous particles and characteristic pinwheel‐shaped cytoplasmic inclusions potyvirus sap cells symptomatic leaves. Potyvirus was confirmed through RT‐PCR, using universal primers followed by nucleotide sequencing. The obtained sequences, comprising part the CP gene 3′ non‐translated region, showed 97.71%–97.87% identity with an...
Abstract Plant virus ecology is strongly dependent on that of its vector. The necessity a competent vector for transmission primary ecological factor driving the host range expansion plant arthropod-borne viruses, with vectors playing an essential role in promoting disease emergence. Cassava begomoviruses severely constrain cassava production Africa. Curiously, have never been reported South America, center origin this crop. It has hypothesized absence efficiently colonizes reason why not...
Abstract Passiflora virus Y was detected infecting soybean ( Glycine max ) for the first time naturally in Brazil. This research reports complete genome sequence, molecular and biological properties of PaVY Brazilian isolate. The sequencing shows a 9679nt long that shares 84.4% nt identity with previously reported isolate from spp. PaVY-Br induced chlorotic spots systemic mosaic on local lesions passion fruit edulis sesame Sesamum indicum ). successfully transmitted by Myzus persicae,...