Genome-wide analysis of the SET DOMAIN GROUP family in grapevine |
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Authors: | Aquea Felipe Vega Andrea Timmermann Tania Poupin María Josefina Arce-Johnson Patricio |
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Affiliation: | 1. Departamento de Gen??tica Molecular y Microbiolog??a, Facultad de Ciencias Biol??gicas, Pontificia Universidad Cat??lica de Chile, P.O.Box 114-D, Santiago, Chile 2. Departamento de Ciencias Vegetales, Facultad de Agronom??a e Ingenier??a Forestal, Pontificia Universidad Cat??lica de Chile, Santiago, Chile 3. Facultad de Ingenier??a y Ciencias, Universidad Adolfo Ib???ez, Santiago, Chile
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Abstract: | The SET DOMAIN GROUP (SDG) proteins represent an evolutionarily-conserved family of epigenetic regulators present in eukaryotes
and are putative candidates for the catalysis of lysine methylation in histones. Plant genomes analyses of this family have
been performed in arabidopsis, maize, and rice and functional studies have shown that SDG genes are involved in the control
of plant development. In this work, we describe the identification and structural characterization of SDG genes in the Vitis vinifera genome. This analysis revealed the presence of 33 putative SDG genes that can be grouped into different classes, as it has
been previously described for plants. In addition to the SET domain, the proteins identified possessed other domains in the
different classes. As part of our study regarding the growth and development of grapevine, we selected eight genes and their
expression levels were analyzed in representative vegetative and reproductive organs of this species. The selected genes showed
different patterns of expression during inflorescence and fruit development, suggesting that they participate in these processes.
Furthermore, we showed that the expression of selected SDGs changes during viral infection, using as a model Grapevine Leafroll
Associated Virus 3-infected symptomatic grapevine leaves and fruits. Our results suggest that developmental changes caused
by this virus could be the result of alterations in SDG expression. |
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