Skip to main content
Figure 6 | BMC Plant Biology

Figure 6

From: Adaptive expansion of the maize maternally expressed gene (Meg) family involves changes in expression patterns and protein secondary structures of its members

Figure 6

Imprinting status of Meg genes and endosperm expression patterns of non- Meg genes in the Meg region. (A) Maternal expression ratios of Meg genes at 7 DAP (left panel) and 10 DAP (right panel) endosperms from B73XM17 reciprocal crosses. The horizontal and vertical dotted lines mark boundaries of 3:1 maternal and paternal expression ratio in each cross. If the maternal allele of a gene is expressed 3 times more than its paternal allele, the gene should appear in the upper right corner (red square). The ratios were calculated from the endosperm transcriptome data by Xin et al.[39]. Expression of Meg genes was not detected in 15 DAP endosperm. (B) Heat map depicting the transcriptional activities in BETCs of genes within a ~9.4-Mb region spanning the Meg gene cluster in. Normalized gene expression level (FPKM) was used to generate the graphic. Meg genes are marked with green arrows. The FPKM values of the 6 highly-expressed Meg genes are far larger (>3000) than those of any other genes in the 9.4 Mb interval. Genes with FPKM < 20 in any of the nine samples were omitted from the heat map.

Back to article page

BMC Plant Biology

ISSN: 1471-2229

Contact us