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Figure 1


Fig. 1. Homozygous msi1 mutant Arabidopsis seeds show an early developmental arrest. (A) Cleared seeds derived from the same silique that arrested at different developmental stages. Homozygous (left) and heterozygous (middle) msi1 seeds and wild-type seeds (right). (B) Self-pollinated msi1/MSI1 plants form small aborting seeds (arrows, middle). No small aborting seeds are formed after pollination of msi1/MSI1 plants with wild-type pollen (right). A wild-type (wt) silique is shown as a control in the left panel. (C) Quantification of seed abortion observed after crosses of wtxmsi1/MSI1 (n=212), msi/MSI1 xmsi1/MSI1 (n=583) and msi1/MSI1 xwt (n=487). Scale bars: 50 µm in A; 200 µm in B.