6 documents found, page 1 of 1
Molecular characterization of berry color locus on the portuguese cv. ‘Fernão P...
Ferreira, Vanessa Cristina Monteiro; Carrasco, David; Arroyo-García, Rosa; Castro, Isaura; Pinto-Carnide, OlindaGenotyping studies are increasing the knowledge on grapevine biodiversity, particularly regarding grape berry skin color somatic variants, supporting the research on the color trait. This study aimed to evaluate the effect of the berry color locus, and its surrounding genomic region, on the color variation of the Portuguese white-skinned cultivars ‘Fernão Pires’ and ‘Verdelho’ and its derived red-berried somati...
Genetic analysis of a white-to-red berry skin color reversion and its transcrip...
Ferreira, Vanessa Cristina Monteiro; Matus, José Tomás; Carrasco, David; Arroyo-García, Rosa; Castro, Isaura; Pinto-Carnide, OlindaBackground: Somatic mutations occurring within meristems of vegetative propagation material have had a major role in increasing the genetic diversity of the domesticated grapevine (Vitis vinifera subsp. vinifera). The most well studied somatic variation in this species is the one affecting fruit pigmentation, leading to a plethora of different berry skin colors. Color depletion and reversion are often observed ...
Effects of infection by Trypanosoma cruzi and Trypanosoma rangeli on the reprod...
Fellet, Maria Raquel; Lorenzo, Marcelo Gustavo; Elliot, Simon Luke; Carrasco, David; Guarneri, Alessandra AparecidaThe insect Rhodnius prolixus is responsible for the transmission of Trypanosoma cruzi, which is the etiological agent of Chagas disease in areas of Central and South America. Besides this, it can be infected by other trypanosomes such as Trypanosoma rangeli. The effects of these parasites on vectors are poorly understood and are often controversial so here we focussed on possible negative effects of these paras...
Molecular characterization of berry skin color reversion on grape somatic variants
Ferreira, Vanessa Cristina Monteiro; Carrasco, David; Arroyo-García, Rosa; Castro, Isaura; Pinto-Carnide, OlindaBACKGROUND: During grapevine domestication somatic variation has been used as a source of diversity for clonal selection. OBJECTIVE: This work provides additional information on the molecular mechanisms responsible for berry skin color reversion on a subset of somatic variants for berry skin color never investigated before. METHODS:The berry color locus and its surrounding genomic region were genetically charac...
Genetics and expression of anthocyanin pathway genes in the major skinpigmented...
Ferreira, Vanessa Cristina Monteiro; Carrasco, David; Arroyo-García, Rosa; Castro, Isaura; Pinto-Carnide, OlindaVinhão’ is an autochthonous Portuguese cultivar with an intense black-bluish skin color, highly appreciated due to this feature. This study aimed to give the first insights into the genetic background that may be responsible for the skin color properties of cv. ‘Vinhão’. For this purpose, the allelic composition of MYBA1 and MYBA2 genes was investigated, along with quantification of the expression levels of str...
Spontaneous variation regarding grape berry skin color: A comprehensive study o...
Ferreira, Vanessa Cristina Monteiro; Fernandes, Fátima; Carrasco, David; Hernandez, Marivel Gonzalez; Arroyo-García, Rosa; Andrade, Paula B.Understanding grape berry development and the metabolism of different classes of compounds responsible for traits like berry's color is imperative to control and improve quality aspects of grapes. A colorimetric, biochemical and molecular characterization allowed the comprehensive description of the pigment-related characteristics of nine berry skin color somatic variants, belonging to four different varieties....