|
|
|
|
|
| Santos,Tiago Benedito Dos; Lima,Rogério Barbosa de; Nagashima,Getúlio Takashi; Petkowicz,Carmen Lucia de Oliveira; Carpentieri-Pípolo,Valéria; Pereira,Luiz Filipe Protasio; Domingues,Douglas Silva; Vieira,Luiz Gonzaga Esteves. |
| Increased synthesis of galactinol and raffinose family oligosaccharides (RFOs) has been reported in vegetative tissues in response to a range of abiotic stresses. In this work, we evaluated the transcriptional profile of a Coffea canephora galactinol synthase gene (CcGolS1) in two clones that differed in tolerance to water deficit in order to assess the contribution of this gene to drought tolerance. The expression of CcGolS1 in leaves was differentially regulated by water deficit, depending on the intensity of stress and the genotype. In clone 109A (drought-susceptible), the abundance of CcGolS1 transcripts decreased upon exposure to drought, reaching minimum values during recovery from severe water deficit and stress. In contrast, CcGolS1 gene expression... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffee; Drought stress; Raffinose family oligosaccharides (RFOs). |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000200182 |
| |
|
|
| Domingues,Douglas Silva; Leite,Susi Meire Maximino; Farro,Ana Paula Cazerta; Coscrato,Virgínia Elias; Mori,Edson Seizo; Furtado,Edson Luiz; Wilcken,Carlos Frederico; Velini,Edivaldo Domingues; Guerrini,Iraë Amaral; Maia,Ivan Godoy; Marino,Celso Luis. |
| Boron (B) is a low mobility plant micronutrient whose molecular mechanisms of absorption and translocation are still controversial. Many factors are involved in tolerance to Boron excess or deficiency. Recently, the first protein linked to boron transport in biological systems, BOR1, was characterized in Arabidopsis thaliana. This protein is involved in boron xylem loading and is similar to bicarbonate transporters found in animals. There are indications that BOR1 is a member of a conserved protein family in plants. In this work, FORESTS database was used to identify sequences similar to this protein family, looking for a probable BOR1 homolog in eucalypt. We found five consensus sequences similar to BOR1; three of them were then used in multiple alignment... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eucalyptus; Boron; Xylem loading; Expressed Sequence Tag (EST); BOR1. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400017 |
| |
|
| |
|
|
| Santos,Tiago Benedito dos; Lima,Joni Esrom; Felicio,Mariane Silva; Soares,João Danillo Moura; Domingues,Douglas Silva. |
| Abstract Nitrogen (N) is quantitatively the main nutrient required by coffee plants, with acquisition mainly by the roots and mostly exported to coffee beans. Nitrate (NO3–) and ammonium (NH4+) are the most important inorganic sources for N uptake. Several N transporters encoded by different gene families mediate the uptake of these compounds. They have an important role in source preference for N uptake in the root system. In this study, we performed a genome-wide analysis, including in silico expression and phylogenetic analyses of AMT1, AMT2, NRT1/PTR, and NRT2 transporters in the recently sequenced Coffea canephora genome. We analyzed the expression of six selected transporters in Coffea arabica roots submitted to N deficiency. N source preference was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffee; Nitrogen transport; Nitrogen uptake; Gene family evolution. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000200346 |
| |
|
|
|
