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Registros recuperados: 9
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Athelia (Sclerotium) rolfsii in Allium sativum: potential biocontrol agents and their effects on plant metabolites Anais da ABC (AABC)
CAVALCANTI,VYTÓRIA P.; ARAÚJO,NEILTON A.F.; SCHWANESTRADA,KÁTIA R.F.; PASQUAL,MOACIR; DÓRIA,JOYCE.
Abstract Garlic (Allium sativum L.) plays an important role in popular culture due to its dietary and medicinal uses. It is also used to produce a wide range of pharmacologically interesting molecules. Several pathogens affect garlic plants, especially Athelia (Sclerotium) rolfsii, a fungus that is widespread and causes large economic losses. It causes direct damage to crops and leads to plant stress, which induces secondary metabolite production in plants. The use of microorganisms as biocontrol agents may induce the production of beneficial metabolites in plants that will protect it and promote resistance to pathogen attack. In addition to suppressing disease, biological control agents may have elicitor effects that could induce an increase in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological control; Phytopathogen; Yeast; Bacillus spp.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703949
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Avaliação da atividade antagonista de bactérias ácido-láticas contra o fungo Botrytis cinerea. Repositório Alice
SMANIOTTO, F.; SANTOS, S. N.; MELO, I. S. de; QUEIROZ, S. C. do N. de.
Resumo: O presente trabalho teve como objetivo avaliar a ação antagonista de bactérias ácido - láticas (BAL), provenientes de formulações simbióticas comerciais e isoladas de alimentos pertencentes à Coleç ão de Microrganismos de Importância Agrícola e Ambiental (CMAA) da Embrapa Meio Ambiente contra o fungo Botrytis cinerea, causador da doença chamada ?podridão cinzenta? nos vegetais. Para isso foram realizadas avaliações antagônicas pela técnica de pareamento direto em placa de Petri. Os isolados crescidos foram repicados em meio BDA e MRS com apenas duas estrias no extremo da placa, foram adicionados discos do fungo B. cinerea no outro extremo e as placas foram incubadas à 28 °C. Nas placas controle foram crescidos somente a linhagem do fungo modelo...
Tipo: Separatas Palavras-chave: Bactérias ácido–láticas; Fitopatógeno; Probiótico; Acid-lactic bacteria; Phytopathogen; Probiotic.; Mofo Cinzento; Botrytis Cinerea; Controle Biológico; Bactéria; Antifungal agents; Biological control; Gray mold..
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105232
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Características morfológicas e fisiológicas deisolados de Colletotrichum associados à antracnose da erva-mate. Repositório Alice
BILENKI JUNIOR, V.; AUER, C. G.; WOLF II, N. I..
O valor histórico, cultural e econômico da erva mate a tornam uma espécie florestal de rara importância. A cultura é atacada por inúmeras doenças de natureza fúngica, destacando-se a antracnose, cujo agente causal pertence ao gênero Colletotrichum. Com o objetivo de fazer a caracterização morfológica e fisiológica de isolados de Colletotrichum, materiais com sintomas típicos da doença foram coletados em quatro diferentes municípios do Paraná: Colombo, União da Vitória, Cruz Machado e Guarapuava. As amostras foram processadas no Laboratório de Patologia Florestal da Embrapa Florestas, Colombo PR através dos métodos direto (tecidos doentes mantidos em câmara úmida constituída de caixas gerbox com papel mata-borrão umedecido com água ultrapurificada) e...
Tipo: Artigo de periódico Palavras-chave: Crescimento micelial; Fitopatógeno; Temperatura ótima; Mycelial growth; Optimal temperature; Phytopathogen; Esporulação; Sporulation.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132728
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Chemical constituents of essential oil from Murraya paniculata leaves and its application to in vitro biological control of the fungus Sclerotinia sclerotiorum Ciênc. Tecnol. Aliment.
SILVA,Flávia Fernanda Alves da; ALVES,Cassia Cristina Fernandes; OLIVEIRA FILHO,Josemar Gonçalves de; VIEIRA,Tatiana Manzini; CROTTI,Antônio Eduardo Miller; MIRANDA,Mayker Lazaro Dantas.
ABSTRACT Besides their value as therapeutic resources, medicinal plants may also be used as sources of active ingredients against phytopathogens. Fungi can grow and cause spoilage in food, thus, resusting in decrease in its quality and quantity. This research aimed at evaluating the effect of essential oil from Murraya paniculata (ML-EO) leaves on mycelial growth of Sclerotinia sclerotiorum, a fungus that poses high risk to several cultures, mainly soybean. Essential oil from M. paniculata (Rutaceae) leaves was obtained by hydrodistillation which was carried out by a Clevenger-type apparatus while its chemical composition was analyzed by GC-FID and GC-MS. β-Caryophyllene (23.8%), α-zingiberene (21.0%) and β-cubebene (10.2%) were the main constituents...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phytopathogen; Rutaceae; Soybean; Alternative control; Plant disease.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000600413
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CitEST libraries Genet. Mol. Biol.
Targon,Maria Luísa P. Natividade; Takita,Marco Aurélio; Amaral,Alexandre M. do; Souza,Alessandra A. de; Locali-Fabris,Eliane Cristina; Dorta,Sílvia de Oliveira; Borges,Kleber Martins; Souza,Juliana Mendonça de; Rodrigues,Carolina Munari; Lucheta,Adriano Reis; Freitas-Astúa,Juliana; Machado,Marcos Antonio.
In order to obtain a better understanding of what is citrus, 33 cDNA libraries were constructed from different citrus species and genera. Total RNA was extracted from fruits, leaves, flowers, bark, seeds and roots, and subjected or not to different biotic and abiotic stresses (pathogens and drought) and at several developmental stages. To identify putative promoter sequences, as well as molecular markers that could be useful for breeding programs, one shotgun library was prepared from sweet orange (Citrus sinensis var. Olimpia). In addition, EST libraries were also constructed for a citrus pathogen, the oomycete Phythophthora parasitica in either virulent or avirulent form. A total of 286,559 cDNA clones from citrus were sequenced from their 5’ end,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: ESTs; Shotgun; Citrus; Phytopathogen.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500030
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Comparative analysis of differentially expressed sequence tags of sweet orange and mandarin infected with Xylella fastidiosa Genet. Mol. Biol.
Souza,Alessandra A. de; Takita,Marco A.; Coletta-Filho,Helvécio D.; Campos,Magnólia A.; Teixeira,Juliana E.C.; Targon,Maria Luísa P.N.; Carlos,Eduardo F.; Ravasi,Juliano F.; Fischer,Carlos N.; Machado,Marcos A..
The Citrus ESTs Sequencing Project (CitEST) conducted at Centro APTA Citros Sylvio Moreira/IAC has identified and catalogued ESTs representing a set of citrus genes expressed under relevant stress responses, including diseases such as citrus variegated chlorosis (CVC), caused by Xylella fastidiosa. All sweet orange (Citrus sinensis L. Osb.) varieties are susceptible to X. fastidiosa. On the other hand, mandarins (C. reticulata Blanco) are considered tolerant or resistant to the disease, although the bacterium can be sporadically detected within the trees, but no disease symptoms or economic losses are observed. To study their genetic responses to the presence of X. fastidiosa, we have compared EST libraries of leaf tissue of sweet orange Pêra IAC (highly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: ESTs; Citrus variegated chlorosis; Biotic stress; CitEST; Phytopathogen.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500024
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In vitro antifungal activity of four chemotypes of Lippia alba (Verbenaceae) essential oils against Alternaria solani (Pleosporeaceae) isolates Anais da ABC (AABC)
TOMAZONI,ELISA Z.; PANSERA,MÁRCIA R.; PAULETTI,GABRIEL F.; MOURA,SIDNEI; RIBEIRO,RUTE T.S.; SCHWAMBACH,JOSÉLI.
Several volatile natural compounds produced by plant secondary metabolism have been proven to present antimicrobial action, enabling their use in phytopathogen control. They also present low environmental impact when compared to conventional pesticides. Essential oils contain these compounds and can be found in several plant species, such as Lippia alba (Mill.) N.E. Brown (Verbenaceae). Essential oils of four chemotypes of L. alba, characterized by their major compounds, namely camphor, citral, linalool and camphor/1,8-cineole, were tested against the phytopathogen Alternaria solani Sorauer (Pleosporaceae), which causes early blight on tomatoes and is responsible for great economic losses regarding production. Essential oils antifungal action was tested in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Citral; Early blight; Natural product; Phytopathogen.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000300999
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In Vitro antifungal potency of plant extracts against five phytopathogens BABT
Tapwal,Ashwani; Nisha,; Garg,Shipra; Gautam,Nandini; Kumar,Rajesh.
The antifungal activity of aqueous extract of Cannabis sativa, Parthenium hysterophorus, Urtica dioeca, Polystichum squarrosum and Adiantum venustum was investigated against Alternaria solani, Alternaria zinniae, Curvularia lunata, Rhizoctonia solani and Fusarium oxysporum at different concentrations (5, 10, 15 and 20%). At 20%, maximum antifungal potential was observed with the extracts of C. sativa, which recorded excellent inhibitory activity against C. lunata (100%), A. zinniae (59.68%), followed by leaf extract of P. hysterophorus (50%) against A. solani. The application of botanical extracts for disease management could be less expensive, easily available, non-polluting and eco-friendly.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Botanical; Phytoextract; Antifungal; Phytopathogen; IPM.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000600003
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PINK DISEASE, A REVIEW OF AN ASYMPTOMATIC BACTERIAL DISEASE IN PINEAPPLE Rev. Bras. Frutic.
MARÍN-CEVADA,VIANEY; FUENTES-RAMÍREZ,LUIS ERNESTO.
ABSTRACT Pink disease is an asymptomatic pineapple disease in the field and is evidenced with a reddark coloration when the infected fruit is processed to obtain products such as juice, jam, and preservatives. Tatumella morbirosei and T. ptyseos (formerly Pantoea citrea) have been demonstrated as causal agents. Although T. morbirosei and T. ptyseos have been well studied, there are currently no cost effective control methods in pineapple cultivation. The purpose of this review is to summarize the significant and updated research on the role of pink disease in pineapple.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pineapple; Phytopathogen; GdhB; Biocontrol.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000300407
Registros recuperados: 9
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