Research Article

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12/23/2016
Annona; Bayes Theorem; Brazil; cluster analysis; Genetic variation; Genetics, Population; Genotype; Microsatellite Repeats

Habitat fragmentation has numerous consequences, particularly to endemic species, and has a negative impact on the genetic diversity of neglected species, leading to genetic drift. Annona crassiflora Mart. is a species that is endemic to Brazil, and its incidence in the Cerrado biome has decreased. The identification and characterization of its remaining diversity is necessary for its ... more

R. Gwinner; T.A. Setotaw; F.A. Rodrigues; D.V.C. França; F.A. da Silveira; L.A.S. Pio; M. Pasqual
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Alleles; Animals; Brazil; Breeding; Chromosome Mapping; DNA; Genetic Drift; Genetic variation; Genetics, Population; Genotype; Goats; Heterozygote; Microsatellite Repeats

The aim of this study was to access the genetic diversity and relatedness between Canindé and British Alpine goat breeds in the States of Piauí and Ceará using microsatellite markers. Genomic DNA was isolated from hair samples of 99 goats belonging to six different flocks. A panel of polymorphic heterologous microsatellite loci was used to genotype individuals. The microsatellite markers ... more

T.S. Câmara; J.F. Nunes; F.M. Diniz; G.R. Silva; A.M. Araújo
12/02/2016
Animal Shells; Animals; Bivalvia; Breeding; Evolution, Molecular; Female; Fresh Water; Genetic variation; Genetics, Population; male; Microsatellite Repeats; Phenotype; Phylogeny; Quantitative trait loci

Four Hyriopsis cumingii populations, a breeding population (BP), a cultured population (FP), two wild populations from Poyang Lake (PY) and Dongting Lake (DT), and an H. schlegelii population were collected (JX), and the first filial generations (F1) were bred synchronously. The shell nacre polymorphisms, population genetic diversity, and genetic structures of the F1 of each population were ... more

L.M. Wu; Z.Y. Bai; X.J. Liu; C. Jin; H. Yin; J.L. Li
12/19/2016
Bayes Theorem; Brazil; cluster analysis; Conservation of Natural Resources; Databases, Genetic; DNA, Plant; Endangered species; Genetic variation; Microsatellite Repeats; Myrtaceae; Principal component analysis

Cambuci (Campomanesia phaea) belongs to the Myrtaceae family and is native to the Atlantic Forest of Brazil. It has ecological and social appeal but is exposed to problems associated with environmental degradation and expansion of agricultural activities in the region. Comprehensive studies on this species are rare, making its conservation and genetic improvement difficult. Thus, it is ... more

D.N. Santos; C.F. Nunes; T.A. Setotaw; R. Pio; M. Pasqual; G.M.A. Cançado
2/16/2017
Bayes Theorem; Casearia; Chloroplasts; Conservation of Natural Resources; Discriminant analysis; DNA, Chloroplast; Genetic variation; Genetics, Population; Haplotypes; Microsatellite Repeats

Casearia grandiflora (Salicaceae) is a typical Cerrado species adapted to disturbed environments, making it useful for restoration projects. Knowledge of genetic diversity is important for establishing conservation strategies for this species. This study aimed to compare chloroplast haplotype diversity and structure of C. grandiflora, under the assumption that protected areas hold greater ... more

M.F. Costa; A.A. Pereira; J.B. Pinheiro; M.I. Zucchi; A.S.F. Araújo; R.L.F. Gomes; S.E.S. Valente; M.E.A. Oliveira; A.C.A. Lopes
3/16/2017
Animals; Base Sequence; Conserved sequence; Disease resistance; Evolution, Molecular; Genetic markers; Genetic variation; Genotype; Microsatellite Repeats; Phylogeny; Plant Diseases; Plant Proteins; Psidium; Tylenchoidea

Guava (Psidium guajava L.) crop is severely affected by the nematode Meloidogyne enterolobii. Native Psidium species have been reported as sources of resistance against this nematode. Knowledge on the molecular relationship between Psidium species based on plant resistance gene analogs (RGA) can be useful in the genetic breeding of guava for resistance to M. enterolobii. In this study, RGA ... more

L.R. Noia; A.C. Tuler; A. Ferreira; M.F.S. Ferreira
3/16/2017
Animals; China; DNA, Mitochondrial; Evolution, Molecular; Fishes; Genetics, Population; Haplotypes; Lakes; Phylogeny; Polymorphism, Genetic

Coilia ectenes is a commercially important fishery species in China. C. ectenes taihuensis is an endemic and dominant species found in Taihu Lake of China. When compared with C. ectenes, C. ectenes taihuensis lacks anadromous behavior, and can independently grow and reproduce in Taihu Lake. In this study, the mitochondrial DNA control region (D-loop) sequences were employed to investigate the ... more

J.J. Zhang; J.R. Duan; Y.F. Zhou; J.Y. Peng; D.A. Fang
12/19/2016
Amplified Fragment Length Polymorphism Analysis; Brazil; DNA, Bacterial; DNA, Ribosomal; Evolution, Molecular; Genetic variation; Pantoea; Plant Diseases; Plasmids; Zea mays

Measures to control maize white spot (MWS) caused by Pantoea ananatis are preferentially based on resistant cultivars. A lack of knowledge on the genetic variability of pathogens could interfere with the development and utilization of controlling strategies in this pathosystem. The main goals of this study were to investigate the genetic variability of 90 P. ananatis isolates from three ... more

A.M. Miller; J.E.F. Figueiredo; C.L. Chaves; E.A. Ruas; M.I. Balbi-Peña; N.B. Colauto; L.D. Paccola-Meirelles
3/15/2017
Agriculture; Animals; Brazil; Breeding; Cattle; Female; Genetic variation; male; Population Density

The Red Sindhi cattle breed was imported to Brazil in small numbers. Nowadays, the herds of this breed are distributed in the Northeast, Southeast and Midwest regions of the country. In this study, DNA samples of animals originating from 15 herds in the Northeast and Southeast regions have been analyzed to obtain the ancestry proportions, and to gain a better understanding of the current ... more

J.C.C. Panetto; M.V.G.B. Silva; R.M.H. Leite; M.A. Machado; F.A.T. Bruneli; D.R.L. Reis; M.G.C.D. Peixoto; R.S. Verneque
3/22/2017
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

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