Figure 3From: Genetic dissection of growth, wood basic density and gene expression in interspecific backcrosses of Eucalyptus grandis and E. urophyllaGene and map based models for the putative modes of action of eQTLs and trait QTLs. A. Putative gene-based transcriptional network explaining the relationship of trans-acting eQTLs (transcription factors, TFs) and cis-eQTLs (in target genes) observed at the corresponding trait QTLs. In this model, cis-trans and trans-trans interactions may be possible at the gene and protein levels. B. Map-based model showing the putative interactions of QTLs for wood basic density. In this model, trans-acting eQTLs on LG4 and LG10 (white bars) underlie the wood basic density QTLs observed on these linkage groups, while genes with cis-acting eQTLs on LG8 and 9 (black bars) underlie QTLs detected on the same linkage groups and share trans-eQTLs on LG4 and LG10. The cis-trans interaction (at the gene level) between these two sets of QTLs putatively underlie the detectable epistatic interaction of the wood density QTLs on linkage groups 8 and 10 (Additional file 4 Figure S2).Back to article page