The Seed Biology Place

Plant & Cell Physiology 53: 81-95 (2012)

**Myrigalone A inhibits Lepidium sativum seed germination by interference with gibberellin metabolism and apoplastic superoxide production required for embryo extension growth and endosperm rupture**^[W]

Krystyna Oracz*, Antje Voegele, Danuše Tarkowská, Dominique Jacquemoud, Veronika Turecková, Terezie Urbanová, Miroslav Strnad, Elwira Sliwinska, Gerhard Leubner-Metzger*
*shared corresponding authors

University of Freiburg, Faculty of Biology, Institute for Biology II, Botany / Plant Physiology, Schänzlestr. 1, D-79104 Freiburg, Germany, Web: 'The Seed Biology Place' - www.seedbiology.de (K.O., A.V., D.J., G.L.-M.)
Laboratory of Growth Regulators, Faculty of Science, Palacky University and Institute of Experimental Botany AS CR, v.v.i., Šlechtitel? 11, CZ-783 71, Olomouc, Czech Republic (D.T., V.T., T.U., M.S.)
Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacky University, Šlechtitel? 11, CZ-783 71, Olomouc, Czech Republic (M.S.)
Laboratory of Molecular Biology and Cytometry, Department of Plant Genetics and Biotechnology, University of Technology and Life Sciences, Kaliskiego Ave. 7, PL-85-789 Bydgoszcz, Poland (E.S.)

Received 11 July 2011; Accepted 3 September 2011; First published online 8 September 2011
DOI 10.1093/pcp/pcr124

Fig. 1. The effect of Myrica gale fruit leachate and myrigalone A (MyA) on germination of Lepidium sativum seeds incubated in continuous white light.

(A) L. sativum seeds germinating with M. gale fruits in the light. M. gale fruit was covered with droplets of secreted resin containing essential oils.

(B) The effect of different concentrations of MyA (as indicated above the graph) on the kinetics of testa and endosperm rupture of germinating L. sativum seeds in the light, and (C) on the time to obtain TR50% and ER50% of seed populations (dose response curve).

Mean values ± SE of ≥ 3 plates with 50 L. sativum seeds or 25 L. sativum seeds and 25 M. gale fruits for the co-incubation experiment.

Article in PDF format (1.5 MB)
Supplementary data file (3.4 MB)

Abstract
Supplementary:

Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Table 1
Fig. S1 Fig. S2 Fig. S3 Fig. S4 Tab.S1 Tab.S2 Tab.S3 Tab.S4

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Plant & Cell Physiology 53: 81-95 (2012)

Myrigalone A inhibits Lepidium sativum seed germination by interference with gibberellin metabolism and apoplastic superoxide production required for embryo extension growth and endosperm rupture[W]

**Myrigalone A inhibits Lepidium sativum seed germination by interference with gibberellin metabolism and apoplastic superoxide production required for embryo extension growth and endosperm rupture**^[W]