Research Article

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Poincianella pyramidalis (Tul.) L.P. Queiroz is an endemic Caatinga (Brazilian savannah biome) species that has been exploited for different purposes, although information is necessary about still existing natural populations. The objective of this study was to evaluate the genetic diversity among 20 P. pyramidalis individuals occurring in a population localized in the Caatinga biome of ... more

K.S. Belarmino; M.M. Rêgo; R.L.A. Bruno; G.D.A. Medeiros; A.P. Andrade; E.R. Rêgo
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Secondary metabolites produced by Actinobacteria of tropical soils represent a largely understudied source of novel molecules with relevant application in medicine, pharmaceutical and food industries, agriculture, and environmental bioremediation. The present study aimed to characterize sixty-nine Actinobacteria isolated from compost and tropical soils using morphological, biochemical, and ... more

J.C.M. Dornelas; J.E.F. Figueiredo; C.S. de Abreu; U.G.P. Lana; C.A. Oliveira; I.E. Marriel
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Animals; Brazil; Dogs; Feces; Genome, Viral; Parvoviridae Infections; Parvovirus, Canine; Phylogeny; Polymorphism, Genetic; Recombination, Genetic

With the objective of characterizing Canine parvovirus (CPV) from some suspected fecal samples of dogs collected from the Veterinarian Hospital in Belém city, five positive samples were found by PCR assay and an update molecular characterization was provided of the CPV-2 circulation in Belém. Through sequencing of the complete DNA sequences (NS1, NS2, VP1, and VP2 genes), the CPV-2 strain was ... more

S.P. Silva; L.N.P.P. Silva; E.D.L. Rodrigues; J.F. Cardoso; F.N. Tavares; W.M. Souza; C.M.P. Santos; F.M.S. Martins; I.S. Jesus; T.C. Brito; T.P.C. Moura; M.R.T. Nunes; L.M.N. Casseb; S. Filho; A.R. Casseb
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Arachis; Genome, Plant; Karyotype; Phylogeny; Polymorphism, Genetic; Principal component analysis

Arachis kuhlmannii occurs in Mato Grosso and Mato Grosso do Sul States, Brazil. Its area of occurrence partially overlaps with that of other species in the Arachis section. Because of their morphological similarities, these species are often mistaken one for another. This study aimed the correct classification of available accessions as Arachis kuhlmannii, or other species, and the ... more

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In this study, 21 simple sequence repeat (SSR) markers were used to evaluate the genetic diversity and population structure among 77 Perilla accessions from high-latitude and middle-latitude areas of China. Ninety-five alleles were identified with an average of 4.52 alleles per locus. The average polymorphic information content (PIC) and genetic diversity values were 0.346 and 0.372, ... more

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The parasitic protozoan Perkinsus marinus (Perkinsidae) is known to infect marine bivalves; unfortunately, treatment options are quite limited. The parasite is associated with mass mortalities worldwide and it requires notification to the World Organization for Animal Health (OIE). In Brazil, since the first report of P. marinus infecting ... more

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Francisella noatunensis subsp. orientalis (Fno) is a Gram-negative bacterium that causes granulomatous infections in fish reared at low water temperatures; it has been responsible for a large number of deaths in tilapia fish farms. Fno has been reported in many countries in the last decade. Studies on phylogenomic relationships among isolates are ... more

C.T. Facimoto; R.T. Chideroli; G.W. Di Santis; D.D. Gonçalves; A.Odo Carmo; E. Kalapothakis; A.F.Oliveira Junior; V.A.C. Azevedo; L.J. Benevides; S.S. Castro; N.M.L. Barrero; A.G. de Oliveira; U.P. Pereira
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Chitin domains; Chitinase; Phylogeny; Protein prediction; Sequences

Molecular characterization of genes is a tool used to understand gene function. Chitin is the most abundant nitrogenous organic compound in nature; it is basically inert, but it can be transformed by the action of chitinases to several derivatives, which are of great interest in various areas of industry. These enzymes are widely distributed in many organisms and ... more

C.G. Oropeza-Flores; D. Galvez-Lopez; A. Vázquez-Ovando; M. Salvador-Figueroa; R. Rosas-Quijano
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Brazil; Chikungunya virus; Espírito Santo state; Molecular characterization; Phylogeny

Chikungunya virus (CHIKV) is an RNA virus from the family Togaviridae transmitted primarily by Aedes mosquitoes. The first report of CHIKV infection in Brazil dates to 2014; since then, the virus has become a major public health challenge. The main goal of this study was to perform a phylogenetic analysis of CHIKV isolates from ... more

D.P. Ventorim; F.M.G.S. Rodrigues; L.A. Vianna; R.S. Dettogni; E.V.Wdos Santos; I.D. Louro; M. Oliveira-Silva
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Chloroplast genome; Corydalis; Phylogeny; Species delimitation; Taxonomy

The genus Corydalis (Papaveraceae), which is distributed in temperate regions of the northern hemisphere, has been taxonomically studied mainly on the basis of morphological and molecular genomic information. In the present study, 14 species that belong to the Korean section Corydalis were collected in South Korea and phylogenetically analyzed ... more

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