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| Registros recuperados: 15 | |
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| DORNELES JUNIOR, J.; APOLINÁRIO, M. L.; ZANOTTA, S.; DOLCEMASCOLLO, T. P.; PEREIRA, L. S.; SALAS, F. J. S.; MARINHO-PRADO, J. S.; PRADO, S. de S.. |
| Huanglonbing (HLB) ou Greening é atualmente a doença mais importante dos citros, acarretando prejuízos econômicos significativos à cultura mundialmente. A doença é causada por bactérias do gênero Candidatus Liberibacter que bloqueiam o floema, iniciando assim o desenvolvimento da doença. A disseminação dessa bactéria ocorre através do inseto vetor Diaphorina citri, ou psilídeo-dos-citros. Estudos demonstram que alguns inibidores de protease têm ação no controle de insetos e podem ser influenciados pela presença de simbiontes, que ocorrem em seu aparelho digestivo. Neste sentido, o experimento consistiu em três tratamentos, nos quais mudas de Murraya paniculata foram submetidas a inibidores sintéticos de proteases (E64 e Berenil) e uma solução testemunha. A... |
| Tipo: Separatas |
Palavras-chave: HBL; Transmissão; Simbionte.; Praga de planta; Fruta cítrica; Bactéria; Murraya Paniculata.; Greening disease; Citrus; Symbionts; Diaphorina citri.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1084422 |
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| Thu Pham, The; Thuoc Chu, Van; Viet Ha Bui, Thi; Thuy Nguyen, Thanh; Huy Tran, Quang; Ngoc Mai Cung, Thi; Bouvier, Corinne; Brune, Justine; Villeger, Sebastien; Bouvier, Thierry; Bettarel, Yvan. |
| Viruses inhabiting the surface mucus layer of scleractinian corals have received little ecological attention so far. Yet they have recently been shown to be highly abundant and could even play a pivotal role in coral health. A fundamental aspect that remains unresolved is whether their abundance and diversity change with the trophic state of their environment. The present study examined the variability in the abundance of viral and bacterial epibionts on 13 coral species collected from 2 different sites in the Ha Long Bay, Vietnam: one station heavily affected by anthropogenic activity (Cat Ba Island) and one protected offshore station (Long Chau Island). In general, viral abundance was significantly higher in coral mucus (mean = 10.6 +/- 2.0 x 10(7)... |
| Tipo: Text |
Palavras-chave: Viruses; Coral-associated bacteria; Mucus; Symbionts; Coral reefs. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00627/73870/73680.pdf |
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| Lacava,Paulo Teixeira; Silva-Stenico,Maria Estela; Araújo,Welington Luiz; Simionato,Ana Valéria Colnaghi; Carrilho,Emanuel; Tsai,Siu Mui; Azevedo,João Lúcio. |
| The objective of this work was to study the production of siderophores by endophytic bacteria Methylobacterium spp., which occupy the same ecological niche as Xylella fastidiosa subsp. pauca (Xfp) in citrus plants. The siderophore production of Methylobacterium strains was tested according to chromeazurol agar assay test (CAS), Csáky test (hydroxamate-type) and Arnow test (catechol-type). In addition, the ability of Xfp to use siderophores, in vitro, produced by endophytic bacteria as source of iron, was evaluated. All 37 strains of Methylobacterium spp. tested were CAS-positive for siderophore production. Methylobacterium spp. produced hydroxamate-type, but not catechol-type siderophores. In vitro growth of Xfp was stimulated by the presence of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus variegated chlorosis; Endophytes; Heterologous siderophores; Iron; Symbionts. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000400011 |
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| Marti,G. A.; García,J. J.; Cazau,M. C.; López Lastra,C. C.. |
| A survey of the fungal microbiota of the digestive tract of Triatoma infestans (Klug) (Hemiptera: Reduviidae) adults was carried out. Insects captured in the field from different provinces in Argentina, as well as individuals reared in artificial colonies, were used for dissection. Axenic cultures of the fungal species were identified and were deposited with mycological collections at La Plata , Argentina. A total of 33 fungal species, with the exception of three that were mycelia sterilia, belonging to 11 genera were identified. Thirty two species belonged to Ascomycota (Eurotiomycetes and Sordariomycetes) and one to Zygomycota (Zygomycetes). The genera with the greatest number of species were Penicillium (15), Aspergillus (5), and Cladosporium (2). Among... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Argentina; Digestive tract; Fungal microflora; Insect; Symbionts; Triatoma infestans. |
| Ano: 2007 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722007000200004 |
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| PRADO, S. de S.; PANIZZI, A. R.; KILLINY, N.. |
| Diverse heteropteran insects that feed on economic important crops, commonly known as stink bugs, are associated with specific gut symbiotic bacteria within their midgut cryptic spaces or the gastric caeca. Recent studies have revealed that the stink bugs Nezara viridula, Acrosternum hilare, Murgantia histrionica, Euschistus heros, Chlorochroa ligata, Chlorochroa sayi, Chlorochroa uhleri, Plautia stali, Thyanta pallidovirens, Dichelops melacanthus, Edessa meditabunda, Loxa deducta, Pellaea stictica, Piezodorus guildinii, Thyanta perditor, (all within Pentatomidae family) carried one major bacterium in their midgut. Phylogenetic tree generated using the 16S rRNA gene sequences obtained from the midgut of these previous species placed all symbionts in a... |
| Tipo: Separatas |
Palavras-chave: Symbionts; Insect eggs. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1068483 |
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| PRADO, S. de S.; ZUCCHI, T. D.. |
| Insects in the suborder Heteroptera, the so-called true bugs, include over 40,000 species worldwide. This insect group includes many important agricultural pests and disease vectors, which often have bacterial symbionts associated with them. Some symbionts have coevolved with their hosts to the extent that host fitness is compromised with the removal or alteration of their symbiont. The first bug/microbial interactions were discovered over 50 years ago. Only recently, mainly due to advances in molecular techniques, has the nature of these associations become clearer. Some researchers have pursued the genetic modification (paratrangenesis) of symbionts for disease control or pest management. With the increasing interest and understanding of the bug/symbiont... |
| Tipo: Separatas |
Palavras-chave: Heteroptero.; Praga de planta; Hospedeiro; Simbiose.; Plant pests; Symbionts. |
| Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/932881 |
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| SOUZA, A. C. de; FONSECA, P. da; DORNELES JUNIOR, J.; SANTOS, E. R. dos; PRADO, S. de S.. |
| As cigarrinhas são insetos sugadores da família Cicadellidae que se alimentam principalmente nos vasos do xilema de plantas de citros, café e ameixa e transmitem a bactéria Xylella fastidiosa para estas plantas. Os principais sintomas na planta incluem amarelecimento e redução do tamanho de folhas, encurtamento de internódios, abscisão foliar e seca de ramos. Além de patógenos de plantas, os insetos se encontram associados a simbiontes, os quais podem ou não ser encontrados em especificas células nos insetos, proporcionando um benefício mutuo na maioria dos casos. O presente estudo teve como objetivo detectar a presença do fitopatógeno X. fastidiosa e dos simbiontes Candidatus Sulcia muelleri e Betaproteobacteria em três espécies de cigarrinhas, coletadas... |
| Tipo: Separatas |
Palavras-chave: Simbionte; Bactéria fitopatógenica; Extração de DNA; DNA extraction.; Cigarrinha; Bactéria; Cicadellidae; Symbionts; Plant pathogenic bacteria. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1084323 |
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| ALMEIDA, R. P. de; STOUTHAMER, R.. |
| Wolbachia (Hertig) endosymbionts are extensively studied in a wide range of organisms and are known to be transmitted through the egg cytoplasm to the offsping. Wolbachia may cause several types of reproductive modifications in arthropods. In Trichogramma species, parthenogenesis-inducing Wolbachia bacteria allow females wasps to produce daughters from unfertilized eggs and these bacteria are present in at least 9% of all Trichogramma species. Phylogenetic studies have led to the subdivision of the Wolbachia clade in five supergroups (A, B, C, D and E) and Wolbachia from Trichogramma belong to supergroup B. Here, using the wsp gene, four groups of Wolbachia that infect Trichogramma species were distinguished and the addition of a new group ?Ato? was... |
| Tipo: Artigo de periódico |
Palavras-chave: Parasitose; Ovo; Filogenia; DNA; Symbionts; Phylogeny. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1107074 |
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| Registros recuperados: 15 | |
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