Entity

Time filter

Source Type


Cardoso-Silva C.B.,University of Campinas | Costa E.A.,University of Campinas | Mancini M.C.,University of Campinas | Balsalobre T.W.,University of Campinas | And 6 more authors.
PloS one | Year: 2014

Sugarcane is an important crop and a major source of sugar and alcohol. In this study, we performed de novo assembly and transcriptome annotation for six sugarcane genotypes involved in bi-parental crosses. The de novo assembly of the sugarcane transcriptome was performed using short reads generated using the Illumina RNA-Seq platform. We produced more than 400 million reads, which were assembled into 72,269 unigenes. Based on a similarity search, the unigenes showed significant similarity to more than 28,788 sorghum proteins, including a set of 5,272 unigenes that are not present in the public sugarcane EST databases; many of these unigenes are likely putative undescribed sugarcane genes. From this collection of unigenes, a large number of molecular markers were identified, including 5,106 simple sequence repeats (SSRs) and 708,125 single-nucleotide polymorphisms (SNPs). This new dataset will be a useful resource for future genetic and genomic studies in this species. Source


Cardoso-Silva C.B.,University of Campinas | Costa E.A.,University of Campinas | Mancini M.C.,University of Campinas | Balsalobre T.W.A.,University of Campinas | And 6 more authors.
PLoS ONE | Year: 2014

Sugarcane is an important crop and a major source of sugar and alcohol. In this study, we performed de novo assembly and transcriptome annotation for six sugarcane genotypes involved in bi-parental crosses. The de novo assembly of the sugarcane transcriptome was performed using short reads generated using the Illumina RNA-Seq platform. We produced more than 400 million reads, which were assembled into 72,269 unigenes. Based on a similarity search, the unigenes showed significant similarity to more than 28,788 sorghum proteins, including a set of 5,272 unigenes that are not present in the public sugarcane EST databases; many of these unigenes are likely putative undescribed sugarcane genes. From this collection of unigenes, a large number of molecular markers were identified, including 5,106 simple sequence repeats (SSRs) and 708,125 single-nucleotide polymorphisms (SNPs). This new dataset will be a useful resource for future genetic and genomic studies in this species. © 2014 Cardoso-Silva et al. Source


Pinto L.R.,Centro Avancado Da Pesquisa Tecnologica Do Agronegocio Of Cana Iac Apta | Leite D.C.,Centro Avancado Da Pesquisa Tecnologica Do Agronegocio Of Cana Iac Apta | Favero T.M.,Centro Avancado Da Pesquisa Tecnologica Do Agronegocio Of Cana Iac Apta | Pastina M.M.,University of Sao Paulo | And 8 more authors.
International Sugar Journal | Year: 2011

Marker assisted selection depends on the identification of tightly linked association between marker and the trait of interest. In the present work, functional (EST-SSRs) and genomic (gSSRs) microsatellite markers were used to detect putative QTLs for sugarcane yield components (stalk number, diameter and height) and as well as for quality parameters (Brix, Pol and fibre) in plant cane. The mapping population (200 individuals) was derived from a bi-parental cross (IACSP95-3018 x IACSP93-3046) from the IAC Sugarcane Breeding Program. As the map is under construction, single marker trait association analysis based on the likelihood ratio test was undertaken to detect the QTLs. Of the 215 single dose markers evaluated (1:1 and 3:1), 90 (42%) were associated with putative QTLs involving 43 microsatellite primers (18 gSSRs and 25 EST-SSRs). For the yield components, 41 marker/trait associations were found: 20 for height, 6 for diameter and 15 for stalk number. An EST-SSRs marker with homology to non-phototropic hypocotyls 4 (NPH4) protein was associated with a putative QTL with positive effect for diameter as also with a negative effect for stalk number. In relation to the quality parameters, 18 marker trait associations were found for Brix, 19 for Pol, and 12 for fibre. For fibre, 58% of the QTLs detected showed a negative effect on this trait. Some makers associated with QTLs with a negative effect for fibre showed a positive effect for Pol, reflecting the negative correlation generally observed between these traits. Source


Xavier M.A.,Centro Avancado Da Pesquisa Tecnologica Do Agronegocio Of Cana Iac Apta | Pinto L.R.,Centro Avancado Da Pesquisa Tecnologica Do Agronegocio Of Cana Iac Apta | Favero T.M.,Centro Avancado Da Pesquisa Tecnologica Do Agronegocio Of Cana Iac Apta | Perecin D.,Sao Paulo State University | And 2 more authors.
Genetics and Molecular Research | Year: 2014

Although polycrosses have been used to test the potential of cross-combination of a large number of sugarcane parents, the male parent of the half-sib progenies produced is unknown. The present study aimed to integrate the molecular marker technology to the sugarcane polycross approach by the application of microsatellite markers to identify the male parent of 41 elite clones derived from polycross families. Ten microsatellite [single sequence repeats (SSRs)] primer pairs were used to identify the most likely male parent considering markers present in the selected clone but absent in the female parent. The number of alleles generated by the 10 microsatellite primer pairs ranged from 102 (cross-pollination lantern 4) to 120 (cross-pollination lantern 2) with an average of 113.25 alleles per SSR. The average genetic similarity among the involved parents in the polycrosses was 45.9%. The results of the analysis of the SSR markers absent in the female parent and present only in the selected clone as well as the genetic similarity values allowed the identification of the most likely male parent in 73% of the total clones evaluated and also to detect probable contaminations. The obtained results highlight the importance of using molecular marker technology in the identification and confirmation of the male parent of high-performance clones derived from polycrosses in the sugarcane breeding programs. © FUNPEC-RP. Source

Discover hidden collaborations