Figure 1.

Comparison of the Embryo and Endosperm Transcriptome 24 h after Transfer to 22°C.

(A) Number of detected expressed genes in embryo, endosperm, or both tissues.

(B) Plot of Z-score transformed embryo versus endosperm expression data shows similar expression of most genes in both tissues.

(C) and (D) Transmission electron micrograph of representative embryo and endosperm cells 1 d after transfer to 22°C showing cells densely packed with ribosomes in the embryo (C) compared with the endosperm (D). Numbers at the bottom left of the panels indicate the mean ±se of ribosomes per μm² of cytoplasm observable in a 100-μm-thin section. CW, cell wall; RB, ribosomes; LB, lipid body; PX, peroxisome. Bars = 1 μM.