Plant and Cell Physiology 47: 864-877 (2006)

Endosperm-limited Brassicaceae seed germination: Abscisic acid inhibits embryo-induced endosperm weakening of Lepidium sativum (cress) and endosperm rupture of cress and Arabidopsis thaliana

Kerstin Müller, Stefanie Tintelnot, Gerhard Leubner-Metzger

Institut für Biologie II (Botanik/Pflanzenphysiologie), Albert-Ludwigs-Universität Freiburg, Schänzlestr. 1, D-79104 Freiburg i. Br., Germany, Web: 'The Seed Biology Place'

Received April 3, 2006; accepted May 3, 2006

ABA inhibits endospedrm rupture of Lepidium sativum and Arabidopsis thaliana

Figure 3. 
The effect of ABA on the time courses of testa rupture and endosperm rupture of Lepidium sativum (A,B) and Arabidopsis thaliana (C,D). ABA inhibited endosperm rupture (B,D) of both species in a dose-dependent manner, but did not appreciably affect testa rupture (A,C). Note the different time scales. The incidence of testa and endosperm rupture was scored with time after the start of incubation in continuous light at 18 °C (Lepidium) or 24 °C (Arabidopsis). Mean values ± SE from one experiment with at least three plates with 50 seeds each are presented.

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   Abstract    Fig. 1               Fig. 2
Fig. 5               Fig. 6
Fig. 3               Fig. 4
Fig. 7               Table 1
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