Hybridization
Crossability of Arachis valida and B genome Arachis species
Authors: D.C. Wondracek-L�¼dke, A.R. Custodio, C.E. Simpson and J.F.M. Valls
The peanut (Arachis hypogaea) is an important food crop in much of the tropical and semi-tropical parts of the world. The peanut is an allotetraploid with an AABB genome formula derived from diploids A. duranensis (A genome) and A. ipaënsis (B genome). The success of an introgression program that aims to improve cultivated varieties of the peanut dep.. Read More»
- Genet. Mol. Res. 14(4):
- 2015.December.21.30
- DOI:
- 10.4238/2015.December.21.30
Meiotic behavior in nonaploid accessions of Brachiaria humidicola (Poaceae) and implications for breeding
Authors: K.R. Boldrini, E.V. Adamowski, N. Silva, M.S. Pagliarini and C.B. Valle
Brachiaria humidicola is a grass adapted to seasonally swampy grasslands in Africa; two cultivars, ‘common’ and Llanero, are widely used in Brazilian pastures. New cultivars are in great demand in order to diversify current production systems to achieve improved quality and yield. Cytological analyses of 55 accessi.. Read More»
- Genet. Mol. Res. 10(1):
- vol10-1gmr990
- DOI:
- 10.4238/vol10-1gmr990
A small B chromosome in the grasshopper Ommexecha virens (Ommexechidae)
Authors: T.E. Souza, L.C. Silva-Neto, J.F. Santos, V. Loreto and T.T. Rieger
B chromosomes, also called supernumerary or accessory chromosomes, have been characterized as extra elements found in the karyotypes of different eukaryotic species. B chromosomes are nonvital and only occur in some individuals within a species. Moreover, the chromosomes contain silenced genes, and they exhibit heterochromatinization and the accumulation .. Read More»
- Genet. Mol. Res. 14(4):
- 2015.December.21.22
- DOI:
- 10.4238/2015.December.21.22
Copy number imbalances detected with a BAC-based array comparative genomic hybridization platform in congenital diaphragmatic hernia fetuses
Authors: I.N. Machado, J.K. Heinrich, R. Barini and C.F.A. Peralta
Congenital diaphragmatic hernia (CDH) is a phenotypically and genetically heterogeneous disorder, with a complex inheritance pattern. Structural abnormalities of almost all chromosomes have been described in association with CDH. We made a molecular analysis through array comparative genomic hybridization (array CGH) of a grou.. Read More»
- Genet. Mol. Res. 10(1):
- vol10-1gmr1001
- DOI:
- 10.4238/vol10-1gmr1001
Expression patterns of the STAG gene in intact and regenerating planarians (Dugesia japonica)
Authors: Z.Q. Yuan, B.S. Zhao and J.Y. Zhang
We examined the spatial and temporal expression of the planarian Dugesia japonica STAG-related gene (DjStag), in both intact and regenerating planarians, by whole-mount in situ hybridization and relative quantitative real-time PCR. The first localized transcripts of DjStag were detected in the blastemas three days after amputa.. Read More»
- Genet. Mol. Res. 10(1):
- vol10-1gmr1042
- DOI:
- 10.4238/vol10-1gmr1042
Physical location of the carotenoid biosynthesis genes Psy and �²-Lcy in Capsicum annuum (Solanaceae) using heterologous probes from Citrus sinensis (Rutaceae)
Authors: V. Andrade-Souza, M.G.C. Costa, C.X. Chen, F.G. Gmitter Jr. and M.A. Costa
Carotenoids are responsible for a range of fruit colors in different hot pepper (Capsicum) varieties, from white to deep red. Color traits are genetically determined by three loci, Y, C1, and C2, which are associated with carotenogenic genes. Although such genes have been localized on genetic maps of Capsicum and anchored in L.. Read More»
- Genet. Mol. Res. 10(1):
- vol10-1gmr1025
- DOI:
- 10.4238/vol10-1gmr1025
Screening of genes related to ovarian development in the swimming crab, Portunus trituberculatus, by suppression subtractive hybridization
Authors: Z.B. Yu, C.K. Mu, W.W. Song, R.H. Li, Y.E. Chen and C.L. Wang
The swimming crab, Portunus trituberculatus, is an important marine animal and is widely cultured in China. In the present study, suppression subtractive hybridization was applied to identify the differentially expressed genes in the ovaries of mature and immature P. trituberculatus. One hundred and seventy six expressed sequence tag (ESTs) were identifie.. Read More»
- Genet. Mol. Res. 14(4):
- 2015.December.28.16
- DOI:
- 10.4238/2015.December.28.16
De novo interstitial deletion in the long arm of chromosome 11: a case report
Authors: L.L. Li, H.G. Zhang, X.G. Shao, J.C. Gao, H.Y. Zhang and R.Z. Liu
The 11q terminal deletion disorder is a rare genetic disorder associated with numerous clinical features. A few case reports have been made about de novo interstitial deletion of chromosome 11q. However, due to the heterogeneity in size and position of the deletions, a clear genotype-phenotype correlation is not easily made. H.. Read More»
- Genet. Mol. Res. 15(2):
Molecular epidemiology of the hepatitis C virus in Brazil
Authors: Solange Busek, Guilherme Oliveira
Hepatitis C virus (HCV) is a major cause of liver disease throughout the world. The genome of this virus consists of approximately 10,000 bp and codes for 10 mature polypeptides. Genome sequence comparison has revealed the existence of six major genotypes and a large number of subtypes. The genotypes can be distinguished by wh.. Read More»
- Genet. Mol. Res. 2(1):
Cassava, Manihot esculenta Crantz, genetic resources: origin of the crop, its evolution and relationships with wild relatives
Authors: N.M.A. Nassar
About 98 species of Manihot are known. All of them are native to the New World and are concentrated in four regions in Brazil and Central America. All the Manihot species so far examined have 2n = 36 chromosomes. Interspecific hybrids between cassava and its wild relatives show relatively normal meiosis, and further generation.. Read More»
- Genet. Mol. Res. 1(4):