Figure 3.

Expression of mRNA of the AtPLA I, AtPLA IIA, AtPLA IVA, and AtPLA IVC gene in organs of Arabidopsis. The total RNA from roots, shoots, leaves, and flowers was analyzed by competitive RT-PCR using gene-specific internal standards for the genes I, IIA, and IVA or by RT-PCR using actin as external standard for the gene IVC; separated on ethidium-bromide gel; and inverted into gray scale for digitization and quantification. Relative amounts of cDNAs (highest value is set to 100%) are shown in A for I, in B for IIA, in C for IVA, and in D for IVC.