scholarly journals Morphological and molecular characterization of Stigonema jureiensis sp. nov. (Nostocales, Cyanobacteria) from the Atlantic Rainforest, Sao Paulo, Brazil

Fottea ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 185-191 ◽  
Author(s):  
Guilherme S. Hentschke ◽  
Janaina Rigonato ◽  
Diego B. Genuario ◽  
Haywood D. Laughinghouse IV ◽  
Celia L. Sant'Anna
2019 ◽  
Vol 10 (4) ◽  
pp. 505-508
Author(s):  
Evelynne Urzedo Leão ◽  
Kelly Cristina Gonçales Rocha ◽  
Norberto Silva ◽  
Marcelo Agenor Pavan ◽  
Gentil Cavalheiro Adorian ◽  
...  

Powdery mildew is one of the most commom foliar diseases of cultivated and wild cucurbits worldwide. Six different fungal species have been reported to be associated with powdery mildew of cucurbits, such as Podosphaera xanthii and Golovinomyces cichoracearum. The aim of the study was to identify the causal agent of the disease in watermelon plants (Citrullus lanatus) cultivated in greenhouses of the State of São Paulo. DNA total was extracted using Chelex method and the ITS region was amplified via standard PCR reaction using the specific primers PMITS1 and PMITS2. A fragment of 700pb was amplified and the sequence showed 99% of identity with P. xanthii (accession number JQ728480). Morphological observation showed that the conidia were ellipsoidal-ovoid, had fibrosin bodies and a bifurcated germinative tube in the lateral position. These characteristics and the molecular analyses confirmed P. xanthi as the etiological agent of powdery mildew in watermelon plants in São Paulo State. Morphological and molecular characterization of powdery mildew on watermelon plants in São Paulo state


2008 ◽  
Vol 39 (4) ◽  
pp. 619-622 ◽  
Author(s):  
Simone Guadagnucci Morillo ◽  
Cilli Audrey ◽  
Rita de Cássia Compagnoli Carmona ◽  
Maria do Carmo Sampaio Tavares Timenetsky

2013 ◽  
Vol 20 (1) ◽  
pp. 54-56 ◽  
Author(s):  
Flávia S. Gehrke ◽  
Rodrigo N. Angerami ◽  
Mauro T. Marrelli ◽  
Eliana R. de Souza ◽  
Elvira M.M. do Nascimento ◽  
...  

Author(s):  
Terezinha Lisieux Moraes Coimbra ◽  
Raimundo N. Santos ◽  
Selma Petrella ◽  
Teresa Keico Nagasse-Sugahara ◽  
Silvana Beres Castrignano ◽  
...  

Rocio virus (ROCV) was responsible for an explosive encephalitis epidemic in the 1970s affecting about 1,000 residents of 20 coastland counties in São Paulo State, Brazil. ROCV was first isolated in 1975 from the cerebellum of a fatal human case of encephalitis. Clinical manifestations of the illness are similar to those described for St. Louis encephalitis. ROCV shows intense antigenic cross-reactivity with Japanese encephalitis complex (JEC) viruses, particularly with Ilheus (ILHV), St. Louis encephalitis, Murray Valley and West Nile viruses. In this study, we report a specific RT-PCR assay for ROCV diagnosis and the molecular characterization of the SPAn37630 and SPH37623 strains. Partial nucleotide sequences of NS5 and E genes determined from both strains were used in phylogenetic analysis. The results indicated that these strains are closely related to JEC viruses, but forming a distinct subclade together with ILHV, in accordance with results recently reported by Medeiros et al. (2007).


2018 ◽  
Vol 25 (15) ◽  
pp. 15191-15203 ◽  
Author(s):  
Ronalda Silva de Araújo ◽  
Bruna Aguiar ◽  
Milena Dropa ◽  
Maria Tereza Pepe Razzolini ◽  
Maria Inês Zanoli Sato ◽  
...  

2015 ◽  
Vol 8 (1) ◽  
pp. 103 ◽  
Author(s):  
Érica David ◽  
Semíramis Guimarães ◽  
Ana de Oliveira ◽  
Teresa Goulart de Oliveira-Sequeira ◽  
Gabriela Nogueira Bittencourt ◽  
...  

2008 ◽  
Vol 50 (4) ◽  
pp. 195-198 ◽  
Author(s):  
Pedro Alves d'Azevedo ◽  
Guilherme H.C. Furtado ◽  
Eduardo A.S. Medeiros ◽  
Kelly Aline Santiago ◽  
Suzane Silbert ◽  
...  

E. faecium was the first reported VRE species, carrying the vanA gene in Brazil. In spite of this, vancomycin-resistant E. faecalis has become the predominant species in Brazilian hospitals. The aim of this study was to evaluate the genetic relatedness of VREs isolated in a Brazilian teaching hospital eight years apart from its first isolation. We analyzed 38 VRE strains obtained from 81 surveillance cultures of patients admitted to the four largest intensive care units in Hospital São Paulo in February, 2006. Presence of the vanA gene was assayed by PCR and PFGE analysis was used for molecular characterization. All VRE strains carried the vanA gene. Two distinct clonal groups were observed among vancomycin-resistant E. faecalis. Vancomycin-resistant E. faecium belonged to five distinct clones were demonstrated by molecular typing. All of these clones were different from the first vancomycin-resistant enterococci clone isolated eight years ago in our hospital.


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