Plants Defense
Mostrando 1-12 de 641 artigos, teses e dissertações.
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1. Metabolomic and Histological Response of Passiflora cincinnata Infected with Cowpea aphid-borne mosaic virus (CABMV) Reveals Changes in Asymptomatic and Symptomatic Phases
Passion fruit woodiness disease, caused by the Cowpea aphid-borne mosaic virus (CABMV), is one of the leading phytosanitary challenges of passion fruit production. Passiflora cincinnata has been recognized for its potential in genetic improvement due to its highest resistance to CABMV and other phytopathogens. Metabolomic and histological alterations of P. c
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Integrated UPLC-HRMS, Chemometric Tools, and Metabolomic Analysis of Forage Palm (Opuntia spp. and Nopalea spp.) to Define Biomarkers Associated with Non-Susceptibility to Carmine Cochineal (Dactylopius opuntiae)
Metabolomics, together with analytical methods and chemometric tools, point to new paths for selecting species that are resistant to pests and diseases. In this work, the forage palm species' metabolomic profile was investigated, and the relation between the chemical composition and resistance to Dactylopius opuntiae (carmine cochineal). The study was perfor
J. Braz. Chem. Soc.. Publicado em: 2021-08
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3. Preference of Neoseiulus californicus (Acari: Phytoseiidae) for volatiles of Bt maize induced by multiple herbivory
ABSTRACT Plant indirect induced defenses against herbivores are characterized by the production of plant volatiles that to attract natural enemies. The objective of this study was to evaluate whether the attack of the two-spotted spider mite Tetranychus urticae or the multiple herbivory of T. urticae together with the fall armyworm Spodoptera frugiperda are
Rev. Bras. entomol.. Publicado em: 13/01/2020
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4. Accumulation of organic solutes and enzymatic activity in cut roses (Rosaceae) cultivated with physiological effect products in the Sub- Middle São Francisco River Valley
RESUMO: Objetivou-se, com este estudo, avaliar o acúmulo de carboidratos, proteína e prolina, bem como a atividade de enzimas antioxidantes superóxido dismutase e catalases em plantas de rosa de corte ‘Ambiance’ cultivadas sob aplicação de produtos de efeitos fisiológicos no Vale do Submédio São Francisco. O experimento foi realizado em telado co
Cienc. Rural. Publicado em: 25/11/2019
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5. [PROVISIONAL] Overexpression of rice F-box protein OsFBX322 confers increased sensitivity to gamma irradiation in Arabidopsis
Abstract Ionizing radiation has a substantial effect on physiological and biochemical processes in plants via induction of transcriptional changes and diverse genetic alterations. Previous microarray analysis showed that rice OsFBX322, which encoded a rice F-box protein, was downregulated in response to three types of ionizing radiation: gamma irradiation, i
Genet. Mol. Biol.. Publicado em: 02/09/2019
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6. Responses of Plants to Pesticide Toxicity: an Overview
RESUMO: Os pesticidas são aplicados no mundo todo para proteger as plantas contra as pragas. No entanto, essa aplicação também causa toxicidade às plantas, o que afeta de forma negativa o crescimento e o desenvolvimento delas. A toxicidade dos pesticidas resulta na redução dos teores de clorofila e proteína, acompanhada de menor eficiência fotossint
Planta daninha. Publicado em: 19/08/2019
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7. No fitness costs are induced by Spiroplasma infections of Aphis citricidus reared on two different host plants
Resumo Pulgões podem abrigar vários simbiontes secundários que alteram características ecológicas importantes, como defesa contra inimigos naturais, tolerância ao calor e utilização da planta hospedeira. Um desses simbiontes secundários, Spiroplasma, é estudado em Drosophila por alterar a razão sexual e interagir com o sistema imunológico do hosp
Braz. J. Biol.. Publicado em: 04/07/2019
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8. Genotoxicity of titanium dioxide nanoparticles and triggering of defense mechanisms in Allium cepa
Abstract Titanium dioxide nanoparticles (TiO2NPs) are widely used and may impact the environment. Thus, this study used a high concentration of TiO2NP (1000 mg/L) to verify the defense mechanisms triggered by a plant system – an indicator of toxicity. Furthermore, this study aimed at completely characterizing TiO2NP suspensions to elucidate their toxic beh
Genet. Mol. Biol.. Publicado em: 27/06/2019
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9. Defense responses of wheat plants (Triticum aestivum L.) against brown spot as a result of possible elicitors application
RESUMO: O objetivo desta pesquisa foi avaliar a resposta de plantas de trigo diante da aplicação de possíveis compostos elicitores perante o patógeno Bipolaris sorokiniana. Tal resposta foi examinada por meio da quantificação de enzimas antioxidantes, malondialdeído e flavonoides, da análise da severidade da doença mancha marrom e da produtividade n
Arq. Inst. Biol.. Publicado em: 10/06/2019
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10. NMR-Based Metabolomic Screening for Metabolites Associated with Resistance to Meloidogyne javanica in Annona muricata Roots
The resistance of Annona muricata roots to the nematode Meloidogyne javanica was investigated by nuclear magnetic resonance (NMR)-based metabolomics in combination with principal component analysis (PCA). Metabolic changes in roots exposed and not exposed to the nematode were evaluated and compared. In addition, the presence of nematicidal compounds in the r
J. Braz. Chem. Soc.. Publicado em: 23/05/2019
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11. Green propolis ethanolic extract in bean plant protection against bacterial diseases
RESUMO: Este trabalho teve como objetivo avaliar o extrato etanólico de própolis verde (EEP) na proteção de plantas de feijoeiro contra as duas principais bacterioses da cultura, crestamento bacteriano (Xanthomonas axonopodis pv. phaseoli) e fogo selvagem (Pseudomonas syringae pv. tabaci). Foram realizados experimentos sobre atividade antimicrobiana ind
Cienc. Rural. Publicado em: 16/05/2019
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12. Enzyme-assisted extraction of polyphenols from green yerba mate
Resumo A extração de bioativos de plantas assistida por enzimas tem sido estudada como uma tecnologia verde alternativa. As carboidrases foram candidatas para melhorar o processo de extração de numerosos compostos bioativos de plantas. Os polifenóis são metabólitos secundários de plantas geralmente envolvidos em defesa contra diferentes tipos de estr
Braz. J. Food Technol.. Publicado em: 09/05/2019