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Publikationen - Molekulare Signalverarbeitung

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Publikation

Quint, M.; Drost, H.-G.; Gabel, A.; Ullrich, K. K.; Bönn, M.; Grosse, I. A transcriptomic hourglass in plant embryogenesis Nature 490, 98-101, (2012)

Animal and plant development starts with a constituting phase called embryogenesis, which evolved independently in both lineages1. Comparative anatomy of vertebrate developmentbased on the Meckel-Serrès law2 and von Baers laws of embryology3 from the early nineteenth centuryshows that embryos from various taxa appear different in early stages, converge to a similar form during mid-embryogenesis, and again diverge in later stages. This morphogenetic series is known as the embryonic hourglass4, 5, and its bottleneck of high conservation in mid-embryogenesis is referred to as the phylotypic stage6. Recent analyses in zebrafish and Drosophila embryos provided convincing molecular support for the hourglass model, because during the phylotypic stage the transcriptome was dominated by ancient genes7 and global gene expression profiles were reported to be most conserved8. Although extensively explored in animals, an embryonic hourglass has not been reported in plants, which represent the second major kingdom in the tree of life that evolved embryogenesis. Here we provide phylotranscriptomic evidence for a molecular embryonic hourglass in Arabidopsis thaliana, using two complementary approaches. This is particularly significant because the possible absence of an hourglass based on morphological features in plants suggests that morphological and molecular patterns might be uncoupled. Together with the reported developmental hourglass patterns in animals, these findings indicate convergent evolution of the molecular hourglass and a conserved logic of embryogenesis across kingdoms.
Publikation

Gasperini, D.; Greenland, A.; Hedden, P.; Dreos, R.; Harwood, W.; Griffiths, S. Genetic and physiological analysis of Rht8 in bread wheat: an alternative source of semi-dwarfism with a reduced sensitivity to brassinosteroids. J. Exp. Bot. 63, 4419-4436, (2012) DOI: 10.1093/jxb/ers138

Publikation

Acosta, I.F.; Gasperini, D.; Chételat, A.; Stolz, S.; Santuari, L.; Farmer, E.E. Role of NINJA in root jasmonate signaling PNAS 110 (38), 15473-15478, (2013) DOI: 10.1073/pnas.1307910110

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