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Souza,Alessandra A. de; Takita,Marco A.; Coletta-Filho,Helvécio D.; Campos,Magnólia A.; Teixeira,Juliana E.C.; Targon,Maria Luísa P.N.; Carlos,Eduardo F.; Ravasi,Juliano F.; Fischer,Carlos N.; Machado,Marcos A.. |
The Citrus ESTs Sequencing Project (CitEST) conducted at Centro APTA Citros Sylvio Moreira/IAC has identified and catalogued ESTs representing a set of citrus genes expressed under relevant stress responses, including diseases such as citrus variegated chlorosis (CVC), caused by Xylella fastidiosa. All sweet orange (Citrus sinensis L. Osb.) varieties are susceptible to X. fastidiosa. On the other hand, mandarins (C. reticulata Blanco) are considered tolerant or resistant to the disease, although the bacterium can be sporadically detected within the trees, but no disease symptoms or economic losses are observed. To study their genetic responses to the presence of X. fastidiosa, we have compared EST libraries of leaf tissue of sweet orange Pêra IAC (highly... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ESTs; Citrus variegated chlorosis; Biotic stress; CitEST; Phytopathogen. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500024 |
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Bacci Jr.,Maurício; Soares,Rafael B.S.; Tajara,Eloíza; Ambar,Guilherme; Fischer,Carlos N.; Guilherme,Ivan R.; Costa,Eduardo P.; Miranda,Vitor F.O.. |
Transposable elements (TE) are major components of eukaryotic genomes and involved in cell regulation and organism evolution. We have analyzed 123,889 expressed sequence tags of the Eucalyptus Genome Project database and found 124 sequences representing 76 TE in 9 groups, of which copia, MuDR and FAR1 groups were the most abundant. The low amount of sequences of TE may reflect the high efficiency of repression of these elements, a process that is called TE silencing. Frequency of groups of TE in Eucalyptus libraries which were prepared with different tissues or physiologic conditions from seedlings or adult plants indicated that developing plants experience the expression of a much wider spectrum of TE groups than that seen in adult plants. These are... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Eucalyptus; Transposable element. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400019 |
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