Fig. 4.

XRCC4 is upregulated in protonemata of the diploid Physcomitrella line. Relative transcript abundance in haploid and diploid Physcomitrella lines compared to WT as measured by real-time qRT-PCR. Normalized relative quantities were computed for each of three biological replicates according to Hellemans et al. (2007). Depicted is the mean log2 fold change over the replicates, error bars represent the standard deviations. EF1α and TBP are shown as reference for ploidy-independent gene expression