publication . Other literature type . Article . 2014

DELAY OF GERMINATION 1 mediates a conserved coat-dormancy mechanism for the temperature- and gibberellin-dependent control of seed germination

Name: DELAY OF GERMINATION 1 mediates a conserved coat-dormancy mechanism for the temperature- and gibberellin-dependent control of seed germination
Keywords: PNAS Plus, Cell-wall remodelling, Dormancy gene DOG1, Germination temperature, Gibberellin metabolism, Lepidium sativum

Klaus Mummenhoff; Tina Steinbrecher; Ada Linkies; Kai Graeber; Hans de Jong; Katja Sperber; Miroslav Strnad; Gerhard Leubner-Metzger; Veronika Turečková; Michael Ignatz; ...

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Open Access English

Published: 11 Aug 2014

Publisher: National Academy of Sciences

Country: Czech Republic

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Abstract

None: Seed germination is an important life-cycle transition because it determines subsequent plant survival and reproductive success. To detect optimal spatiotemporal conditions for germination, seeds act as sophisticated environmental sensors integrating information such as ambient temperature. Here we show that the delay of germination 1 (DOG1) gene, known for providing dormancy adaptation to distinct environments, determines the optimal temperature for seed germination. By reciprocal gene-swapping experiments between Brassicaceae species we show that the DOG1-mediated dormancy mechanism is conserved. Biomechanical analyses show that this mechanism regulates ...

doi: 10.1073/pnas.1403851111

pmc: PMC4151772

pmid: 25114251

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Subjects

Medical Subject Headings: food and beverages

free text keywords: PNAS Plus, Cell-wall remodelling, Dormancy gene DOG1, Germination temperature, Gibberellin metabolism, Lepidium sativum, Conserved sequence, Biology, Botany, Germination, Cell biology, Gibberellin, Arabidopsis, biology.organism_classification, Endosperm, Brassicaceae, Dormancy, Hormone metabolism

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