A5027093753- Plant Virus Research Studies
- Plant Pathogenic Bacteria Studies
- Nematode management and characterization studies
- Plant tissue culture and regeneration
- Insect-Plant Interactions and Control
- Agricultural pest management studies
- Plant Parasitism and Resistance
- Plant and Fungal Interactions Research
- Plant Disease Management Techniques
- Transgenic Plants and Applications
- Cassava research and cyanide
- Peanut Plant Research Studies
- Plant-Microbe Interactions and Immunity
- Plant Disease Resistance and Genetics
- Plant pathogens and resistance mechanisms
- Animal Virus Infections Studies
- Phytochemicals and Medicinal Plants
- Banana Cultivation and Research
Universidade de São Paulo
2021-2024
Universidade Brasil
2023-2024
Versar (United States)
2021
Symptoms of severe vein clearing, leaf rolling, and blistering were observed in cassava plants southwestern Bahia State, Brazil. The collected, vegetatively propagated, kept a greenhouse. Leaf samples tested positive for begomovirus infection by Polymerase chain reaction (PCR). Complete nucleotide sequences DNA-A DNA-B isolate PSLDV-Man04 revealed 99.89 % 96.2 identity, respectively, with the bipartite passionfruit distortion virus (PSLDV) genome. This PSLDV was experimentally transmitted to...
Plumeria pudica , known as bridal bouquet, exhibiting characteristic symptoms of orthotospovirus infection were found in different localities Brazil. Symptoms restricted to leaves the middle and lower thirds a few branches each plant. Electron microscopy, molecular analyses, complete genome sequencing identified groundnut ringspot virus (GRSV),member species Orthotospovirus arachianuli . The was poorly transmitted mechanically P. Reverse transcription polymerase chain reaction (RT-PCR)...
Zinnia sp. is a genus belonging to Asteraceae family, originated in Mexico and adapted warm-hot climate (Hemmati Mehrnoosh, 2017). Several types of zinnias with different flower color forms are cultivated Brazil (Min et al., 2020 Souza Jr. 2020). Characteristic symptoms infection caused by orthotospovirus, including chlorotic spots concentric rings on the leaves, were observed two plants florist located city Piracicaba, State São Paulo, Brazil. Orthotospovirus-like particles transmission...
Abstract Passionfruit severe leaf distortion virus (PSLDV) is a begomovirus transmitted by Bemisia tabaci Middle East‐Asia Minor 1 (MEAM1), associated with disease in passion flowers. This study aimed to evaluate the reaction of plants different species Passiflora infection PSLDV, expand known host range and determine minimum acquisition inoculation access periods time retention B. MEAM1. Plants cincinnata , P. mucronata malacophylla were not infected PSLDV through transmission When healthy...
<title>Abstract</title> <italic>Physalis peruviana</italic> (<italic>Solanaceae</italic>) is an exotic plant in Brazil that has been increasingly known for its fruits’ vitamins, nutrients, and high-added value. Like other solanaceous plants, physalis also the target of some viruses; until now, five viruses have reported to naturally infect <italic>P. Brazil. Among them, rugose mosaic virus (PhyRMV) attracted attention due severity symptoms, characterized by leaf mosaic, malformation,...
Abstract This contribution describes biological and molecular features of an isolate the chrysanthemum stem necrosis orthotospovirus (CSNV) found naturally infecting sweet pepper plants ( Capsicum annuum L.). High‐throughput sequencing resulted in three contig sequences 2948, 4829 8959 nucleotides for CSNV‐Ca small, medium large RNAs, respectively. They shared 98.4%, 99.3% 99.1% nucleotide identities, respectively, with corresponding a CSNV from Slovenia. The virus was mechanically...
Abstract Physalis peruviana (Solanaceae), originating from the Andean region of South America, is an exotic plant cultivated in Brazil that produces edible fruit. Five viruses have been reported to naturally infect plants Brazil, which, two drawing attention for severity their infections: sobemovirus, physalis rugose mosaic virus (PhyRMV) and orthotospovirus, groundnut ringspot (GRSV). This study aimed evaluate effects single double infections PhyRMV GRSV on development, yield postharvest...
Zinnia sp. and hairy beggartick (Bidens pilosa) plants exhibiting symptoms of possible virus infection were found in the municipality Santa Bárbara d’Oeste, São Paulo State, Brazil. Flexuous filamentous particles cytoplasmatic inclusions typical potyvirus observed by transmission electron microscopy, respectively, leaf extracts cells symptomatic leaves. Infection both with bidens mottle (BiMoV) was confirmed RT-PCR using universal primers, followed nucleotide sequencing amplicons. The nearly...
Tradescantia spathacea (family Commelinaceae) is cultivated worldwide as an ornamental (Golczyk et al., 2013) and medicinal plant (Tan 2020). In 2019, 90 of ~180 plants T. spathacea, grown in two beds 4 m2 exhibiting leaf mosaic were found experimental area at ESALQ/USP (Piracicaba municipality, São Paulo state, Brazil). Potyvirus-like flexuous filamentous particles observed by transmission electron microscopy foliar extracts symptomatic stained with 1% uranyl acetate. Total RNA was...
Abstract Tomato crops are affected by various viral diseases. In Brazil, the most frequent of these diseases caused begomovirus tomato severe rugose virus (ToSRV), crinivirus chlorosis (ToCV) and orthotospoviruses, mainly groundnut ringspot (GRSV) chlorotic spot (TCSV). Mixed infections can result in synergistic interactions and, some cases, breakdown resistance, as previously reported for interaction between ToCV spotted wilt (TSWV) plants carrying Sw ‐ 5 orthotospovirus‐resistance gene....