A5031703580- Plant Pathogens and Fungal Diseases
- Plant-Microbe Interactions and Immunity
- Microbial Metabolism and Applications
- Mycorrhizal Fungi and Plant Interactions
- Microbial Natural Products and Biosynthesis
- Plant Pathogenic Bacteria Studies
- Fungal Biology and Applications
- Yeasts and Rust Fungi Studies
- Banana Cultivation and Research
- Plant Disease Resistance and Genetics
- Aquaculture Nutrition and Growth
- Identification and Quantification in Food
- Antimicrobial Peptides and Activities
- Nematode management and characterization studies
- Entomopathogenic Microorganisms in Pest Control
- Agricultural and Food Sciences
- Legume Nitrogen Fixing Symbiosis
- Aquaculture disease management and microbiota
- Studies on Chitinases and Chitosanases
- Insect Pest Control Strategies
- Enzyme Production and Characterization
- Genomics and Phylogenetic Studies
- Glycosylation and Glycoproteins Research
- Insect Utilization and Effects
- Insect Resistance and Genetics
Universidade Federal do Amazonas
2021-2024
Brazilian Agricultural Research Corporation
2020-2023
Universidade Federal de Viçosa
2019-2023
Universidade do Estado do Amazonas
2020-2023
Weatherford College
2023
National Institute of Amazonian Research
2023
Coordenação de Aperfeicoamento de Pessoal de Nível Superior
2021
Trichoderma is recognized as a prolific producer of nonribosomal peptides (NRPs) known peptaibols, which have remarkable biological properties, such antimicrobial and anticancer activities, well the ability to promote systemic resistance in plants against pathogens. In this study, sequencing 11-, 14- 15-res peptaibols produced by marine strain isolated from ascidian Botrylloides giganteus was performed via liquid chromatography coupled high-resolution tandem mass spectrometry (LC-MS/MS)....
Pestalotioid species (Pestalotiopsis, Pseudopestalotiopsis and Neopestalotiopsis) cause extremely damaging diseases in a wide range of hosts across the word. Recently, pestalotioid strains isolated from damaged guarana leaf tissue were subject to morphological molecular characterization. Six monosporic isolates obtained analysed based on following conidial characters: length, width, septation, absence or presence basal appendage, number length apical appendages. For phylogenetic inference,...
ABSTRACT The use of bacteria in growth promotion and biological control plant diseases can minimize environmental contamination caused by the indiscriminate pesticides chemical fertilizers. We aimed to evaluate Corynespora cassiicola tomato seedlings mediated beneficial isolated from a non-rhizospheric Amazon soil containing different amounts biochar, identify which groups strains belong. obtained 200 experimental plots biochar doses 0, 40, 80 120 t ha-1. Of these, 53 were selected root...
ABSTRACT: The aim of this study was to molecularly identify different species Aeromonas isolated from farmed tambaqui (Colossoma macropomum) North Brazil, and evaluate their pathogenic potential by the presence virulence genes. From extraction bacterial DNA, PCR (polymerase chain reaction) primers 16S rDNA, aerA (cytolytic enterotoxin), ast (cytotoxic enterotoxin) act were performed. Of 24 isolates evaluated, eight amplified gene, one but areA gene not in any isolate. Sequencing rRNA primer...
Bacterial wilt, caused by Ralstonia solanacearum, is one of the main challenges for sustainable tomato production in Amazon region. This study evaluated potential bacteria isolated from sediments Solimões and Negro rivers biocontrol this disease. From 36 selected through vitro antibiosis, three promising isolates were identified: Priestia aryabhattai RN 11, Streptomyces sp. 24, Kitasatospora SOL 195, which inhibited growth phytopathogen 100%, 87.62%, respectively. These also demonstrated...
Abstract Plants of the genus Myrciaria are commonly cultivated in northern region Brazil for fruit production. Symptoms leaf spot camu‐camu ( dubia ) trees frequently observed. The objective this study was to identify etiological agent associated with anthracnose using concept morphological and phylogenetic analyses. Leaves symptoms were collected from plants state Roraima, Brazil. Morphological identification; sequencing analysis CAL , GAPDH CHS‐1 TUB2 gene regions; a pathogenicity test...
Abstract Three new putative sequences of 14‐residue peptaibols, named amazonins I–III were characterized from the endophytic fungus Trichoderma amazonicum via genome mining, high‐performance liquid chromatography coupled to high‐resolution tandem mass spectrometry (LC–MS/MS), and molecular networking. Bioinformatic analysis T. assembly revealed 63 clusters biosynthetic genes (BGCs) related secondary metabolites, including a nonribosomal peptide synthetase accountable for biosynthesis...
Arcopilus is a genus recently proposed after the taxonomic restructuring of Chaetomium with only seven described species so far. During characterization microbiome Amazonian guarana plant (Paullinia cupana var. sorbilis), nine red pigment-producing strains fungi were isolated. These identified through morphological and phylogenetic analysis based on internal transcribed spacer (ITS), 28S large subunit (LSU), partial second largest RNA polymerase II (RPB2) β-tubulin (TUB2) regions. Moreover,...
Abstract The species of Trichoderma are the most common fungi to be used as biocontrol agents, and their metabolic arsenal has a wide variety applications that places this genus among those with potential provide biotechnological products. ubiquitous nature favored rapid increase in number described species, significant efforts have been made towards taxonomy order improve accuracy identification. During study cultivable microbiota from Juruá River, Amazon, Brazil. Isolates morphological...
Abstract The genus Penicillium is recognized for its ability to produce bioactive molecules with a wide range of biotechnological applications. Currently, the distributed in 28 sections, more than 50 species Exilicaulis section. Representative this section are responsible production antimicrobial compounds, but they can also genotoxic compounds that affect commercial mushroom or cause disease immunosuppressed animals. In present study, based on morphological characters such as length...
Spodoptera frugiperda (Lepidoptera: Noctuidae) is an important insect pest in Brazil and worldwide, its control based mainly on chemical methods that are harmful to the environment human animal health. We investigated fungal community associated with body surface of S. evaluated potential members this act as biocontrol agents. The caterpillars were collected field, reared laboratory a natural diet, for association fungi their environment, subjected bioassay insecticidal activity. Our results...
Abstract The Trichoderma genus is considered one of the most promising in control phytopathogens. mechanisms antagonism that are common among species mycoparasitism and competition for space nutrients. Some also show antibiosis through production secondary metabolites with antimicrobial activity, lytic enzymes volatile compounds. species-mediated biocontrol can be exerted by indirect such as induction resistance. In search efficient isolates spp. biological southern blight tomato plants (...
Introdução Moniliophthora perniciosa é o agente causal da vassoura de bruxa em espécies economicamente importantes como cacaueiro. Em termos hospedeiros M. que pode causar doenças mais 400 vegetais. O controle químico tem favorecido surgimento linhagens resistentes a fungicidas. Objetivo: prospectar ativos biológicos com atividade antifúngica contra perniciosa. Metodologia: Dois Trichoderma obtidos açaí (Euterpe precatoria) MMSRG 38A isolado casca interna e 38B externa foram avaliados Os...