Epigenetic chromatin modifiers in barley: IV. The study of barley Polycomb group (PcG) genes during seed development and in response to external ABA |
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Authors: | Aliki Kapazoglou Alessandro Tondelli Dimitra Papaefthimiou Helen Ampatzidou Enrico Francia Michele A Stanca Konstantinos Bladenopoulos Athanasios S Tsaftaris |
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Institution: | (1) Institute of Agrobiotechnology, CERTH, Thermi-Thessaloniki, GR-57001, Greece;(2) CRA-Genomic Research Centre, Fiorenzuola d'Arda, I-29017, Italy;(3) Department of Agricultural and Food Science, University of Modena and Reggio Emilia, I-42100 Reggio Emilia, Italy;(4) Cereal Institute, NAGREF, Thermi-Thessaloniki, GR-57001, Greece;(5) Department of Genetics and Plant Breeding, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece |
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Abstract: | Background Epigenetic phenomena have been associated with the regulation of active and silent chromatin states achieved by modifications
of chromatin structure through DNA methylation, and histone post-translational modifications. The latter is accomplished,
in part, through the action of PcG (Polycomb group) protein complexes which methylate nucleosomal histone tails at specific
sites, ultimately leading to chromatin compaction and gene silencing. Different PcG complex variants operating during different
developmental stages have been described in plants. In particular, the so-called FIE/MEA/FIS2 complex governs the expression
of genes important in embryo and endosperm development in Arabidopsis. In our effort to understand the epigenetic mechanisms regulating seed development in barley (Hordeum vulgare), an agronomically important monocot plant cultivated for its endosperm, we set out to characterize the genes encoding barley
PcG proteins. |
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