Research Article

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Chaperones; CIRCE; differential gene expression; Heat shock response; Hsp

Chromobacterium violaceum is a Gram-negative proteobacteria found in water and soil; it is widely distributed in tropical and subtropical regions, such as the Amazon rainforest. We examined protein expression changes that occur in C. violaceum at different growth temperatures using electrophoresis and mass spectrometry. The total number of spots detected was 1985; the ... more

I.B. Cordeiro; D.P. Castro; P.P.O. Nogueira; P.C.S. Angelo; P.A. Nogueira; J.F.C. Gonçalves; A.M.R.F. Pereira; J.S. Garcia; G.H.M.F. Souza; M.A.Z. Arruda; M.N. Eberlin; S. Astolfi-Filho; E.V. Andrade; J.L. López-Lozano
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Chaperones; HSPs; Melipona interrupta

Heat shock proteins (HSPs) are highly conserved molecules across all plant and animal species. In insects, HSPs are expressed in response to biotic and abiotic stressors and have a well characterized expression pattern in response to heat stress, especially heat shock genes Hsp60, 70 and 90. Temperature affects many aspects of eusocial Hymenoptera, including the ... more

T.C.S. Siqueira; D.V. Brito; G.A. Carvalho-Zilse
04/25/2013
Biomass yield; Floral induction; Flowering time genes; Photoperiodism; Saccharum spp; SUCEST

Molecular analysis of floral induction in Arabidopsis has identified several flowering time genes related to 4 response networks defined by the autonomous, gibberellin, photoperiod, and vernalization pathways. Although grass flowering processes include ancestral functions shared by both mono- and dicots, they have developed their own mechanisms to transmit floral induction ... more

C.P. Coelho; A.P.Costa Netto; J. Colasanti; A. Chalfun-Júnior
10/31/2014
genetic breeding; Hybridization; Inbreeding; Molecular marker; Saccharum spp; Self-fertilization

Superior inbred clones selected in S1 families can integrate an individual reciprocal recurrent selection program in sugarcane by eliminating the genetic load of the population and exploring superior hybrid combinations. Molecular markers can be used for reliable identification of the true selfing-derived clones in these S1 populations. The objective of this study ... more

P.M.A. Costa; C.F. Almeida; G. Silveira; B. Soares; D.C.F. Baffa; L.A. Peternelli; L.L. Bhering; M.H.P. Barbosa
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Genotype-environment interaction; Plant improvement; Productivity; Saccharum spp

We assessed the agroindustrial performance of 25 sugarcane genotypes adapted to the edaphoclimatic conditions of the State of Pernambuco, Brazil, within the microregions Mata Norte, Mata Sul, Região Central, Litoral Norte, and Litoral Sul. The variables analyzed were POL tonnage per hectare, sugarcane tonnage per hectare, fiber and total recoverable sugar tonnage per hectare, using a ... more

J.A.Dutra Filho; T.C. Junior; D.E.Simões Neto
06/09/2014
Genotype x environment interaction; Mixed model; Multi-environment trials; Saccharum spp; Sugarcane breeding

The identification and recommendation of superior genotypes is crucial for the growth of industrial crops, and sugarcane breeding performs a vital role by developing more productive cultivars. The study of genotype x environment interaction has been an essential tool in this process. Thereby, the purpose of this study was to investigate the relationship between methods of adaptability and ... more

T.O.Mendes de Paula; C.D. Marinho; V. Souza; M.H.P. Barbosa; L.A. Peternelli; C.A. Kimbeng; M.M. Zhou
03/31/2014
Flowering; Molecular markers; Pollen viability; Saccharum spp

The self-fertilization or selfing rate estimation using microsatellite markers and its impact on survival and selection rate were evaluated in families derived from polycrosses that involved parents that were widely used in sugarcane breeding in Brazil. These factors were evaluated under unfavorable natural conditions of flowering and crossing. After the germination test, the viable ... more

M.L.G. Melloni; M.S. Scarpari; L.R. Pinto; D. Perecin; M.A. Xavier; M.G.A. Landell
01/17/2014
Genetic diversity; Germplasm characterization; Multivariate analysis; Saccharum spp

We evaluated the genetic diversity of 77 clones of sugarcane used in crosses made by the Brazilian interuniversity network for the development of the sugar/energy sector (RIDESA) breeding program. Characterization of the genotypes was carried out at the ratoon stage, based on eight morphological traits and seven agronomic traits. Diversity analysis was carried out beginning with the Ward ... more

B.P. Brasileiro; C.D. Marinho; P.M.A. Costa; E.F.A. Moreira; L.A. Peternelli; M.H.P. Barbosa
06/29/2015
Cytometer; Saccharum spp; Standardization

The aim of this study was to evaluate the reliability of flow cytometry analysis and the use of this technique to differentiate species and varieties of sugarcane (Saccharum spp) according to their relative DNA content. We analyzed 16 varieties and three species belonging to this genus. To determine a reliable protocol, we evaluated three extraction buffers (LB01, Marie, and Tris ... more

A.C.L. Oliveira; M. Pasqual; A.T. Bruzi; L.A.S. Pio; P.M.S. Mendonça; J.D.R. Soares
10/30/2015
Characterization; cluster analysis; Dissimilarity; Saccharum spp

Genetic diversity among local accessions and varieties subsidize plant breeding programs, allowing the utilization of existing variability in plants that have already adapted to local climate conditions. An alternative to studying genetic variability is the study of diversity. The aim of this research was to study genetic diversity among sugarcane accessions and varieties used for the ... more

L.E.V. Cesar; A.T. Bruzi; J.A.R. Nunes; L.Ade B. Andrade; M.F. Lopes; L.R. Sales; M.M. Mourão

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