Research Article

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Brazil; cluster analysis; DNA Primers; DNA, Plant; Genetic markers; Genetic variation; Genotype; Morinda; Phylogeny; Plants, Medicinal; Random Amplified Polymorphic DNA Technique; Species Specificity

Morinda citrifolia L., commonly known as noni, has been used for the treatment of various diseases for over two centuries. It was introduced and widely disseminated in Brazil because of its high market value and ease of adaptation to the soil and climatic conditions of the country. The aim of this study was to estimate the genetic variability of noni accessions from the collection of Embrapa ... more

P.N. Bordallo; A.M.R. Monteiro; J.A. Sousa; F.A.S. Aragão
Alleles; Brazil; Fruit; Genetic markers; Genetic variation; Microsatellite Repeats; Myrtaceae; Phylogeny; Plant breeding; Polymorphism, Genetic; Trees; Vitamin A

Myrciaria dubia (camu-camu) is an Amazon tree that produces a tart fruit with high vitamin C content. It is probably the fruit with the highest vitamin C content among all Brazilian fruit crops and it can be used to supplement daily vitamin C dose. This property has attracted the attention of consumers and, consequently, encouraged fruit farmers to produce it. In order to identify and select ... more

C.F. Nunes; T.A. Setotaw; M. Pasqual; E.A. Chagas; E.G. Santos; D.N. Santos; C.G.B. Lima; G.M.A. Cançado
Animals; Brazil; Cattle; Cattle Diseases; Coronavirus Infections; Coronavirus, Bovine; Dysentery; Evolution, Molecular; Feces; Membrane Glycoproteins; Phylogeny; Sequence Analysis, DNA; Viral Envelope Proteins; Viral Tropism

Bovine coronavirus (BCoV) is a pathogen related to enteric and respiratory diseases in cattle worldwide. Enteric (BECoV) strains of BCoV are predominant in South America, and genetic investigations have been conducted to identify its relationship with isolates of respiratory origin (BRCoV). In this study, we used a BRCoV strain (BR-UEL11) derived from an outbreak of respiratory disease in ... more

E.A. Beuttemmuller; A.F. Alfieri; S.A. Headley; A.A. Alfieri
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

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Genetic variability; Microsatellites; Molecular characterization; Musa spp

Microsatellite markers have been widely used in the quantification of genetic variability and for genetic breeding in Musa spp. The objective of the present study was to evaluate the discriminatory power of microsatellite markers derived from ‘Calcutta 4’ and ‘Ouro’ genomic libraries, and to analyze the genetic variability among 30 banana accessions. Thirty-eight markers were ... more

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Babesia vogeli; Canine babesiosis; Molecular characterization; Northern Brazil

Babesiosis is an infectious hemolytic disease that occurs worldwide, and is caused by a protozoan of the Babesia genus (Apicomplexa). Little is known about this genus; therefore, this study conducted a molecular characterization of Babesia spp in naturally infected dogs in northern Brazil. Blood samples were collected from 172 dogs from metropolitan Belém, and screened ... more

P.H.G. Moraes; C.P. Rufino; A.R.F. Baraúna; T. Reis; L.T.D. Agnol; A.M.C. Meneses; D.C.F. Aguiar; M.R.T. Nunes; E.C. Gonçalves
Forage crop; Genetic diversity; ISSR markers; Molecular characterization

Cratylia argentea (Desv.) Kuntze (Fabaceae) is a drought-tolerant, perennial legume found primarily in Brazil, Bolivia, and Peru. The shrub is well adapted to acid soils and exhibits high productivity and nutritional value, characteristics that would favor its use as a dry season animal forage supplement in semiarid regions. In plant improvement programs, the production of elite ... more

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Indigenous Brazilian fruit tree; Molecular characterization; Population structure

Some species of Anacardium (Anacardiaceae) produce fruits and pseudofruits that are smaller than those of the common cashew (Anacardium occidentale) and, for this reason, are known collectively in Brazil as “cajuí”. Despite their economic value in the food market and their important environmental and ecological functions, cajuí trees remain ... more

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Agromyzidae; Diptera; Molecular characterization; Persian clover; Soybean Stem Fly

The soybean stem fly (Melanagromyza sojae) is a widely distributed and highly damaging soybean pest, recently introduced to Brazil and neighboring countries. The bioecology of this pest under South American growing conditions is largely unknown, including how infesting populations survive throughout the winter. Fly larvae collected in August 2019 from Persian ... more

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Genetic resources; Ginger; ISSR; Molecular characterization

Ginger (Zingiber officinale Roscoe) is a self-incompatible plant and has high rates of infertility; its genetic diversity only occurs via processes of mutation and natural selection. Since ginger is important as a condiment and as an herbal medicine, understanding its diversity to a greater degree can contribute both to its conservation and to its use in ... more

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