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. 6. Effect of MyA on the endoreduplication in distinct zones within the RAD during the germination of Lepidium sativum seeds incubated in continuous white light.

(A) Uniformly NBT-histostained RAD of control embryo (left) and visible three distinct zones of apoplastic superoxide (O2•-) accumulation within the RAD region of a MyA-treated embryo (right) at 22 h.

(B) Effect of MyA on the (4C+8C+16C)/2C ratios in three distinct zones of the RAD isolated from seeds imbibed for 15 and 22 h. For complete results and statistics see Supplemental Table S2.

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]