Close by (between RG650 and RM324) was a dense cluster of root QTLs.
There are only three exceptions, the strong cluster of root QTLs on chromosome 5 and the weaker clusters at the top of chromosome 6 and the upper QTL on chromosome 9.
A clearly recognisable cluster of root QTLs is co-localizing with only five of these clusters (between RG409 and RG191 on chromosome 3, near both RZ516 and R2654 on chromosome 6, and near both PIP and RM234 on chromosome 7).
A less dense cluster of root QTLs were also apparent at C39, and in a diffuse region around C451, while notable drought regions were C39, G20 and above RG650.
Annotation (2) shows a tendency of double adaptive thresholding (DAT) to omit dense clusters of roots; in the given example this omission occurs in the upper root crown.
PCA of only root and shoot TRFLP data showed separate clustering of root microbial communities away from shoot communities.
Of the 22 high QTL density regions for clusters of root QTLs apparent in Figures 1 and 2, most did not appear to co-localize with plant height or leaf morphology high QTL density regions.
The networks of rat are shown in Figure 5C and D, and the networks of mouse are shown in Figure 5E and F. From the networks, well connected clusters of root nodes were found, and more flexibility in the connection were presented.
The first cluster consists of root samples collected at the early time points (0 6 dpi) before the macroscopically visible appearance of nodules.
Furthermore, P-deprived pnp mutants develop aborted clusters of lateral roots, which are characterized by decreased auxin responsiveness and cell division, and cell death at the root tips (Marchive et al., 2009).
Interestingly, a previous study using a split-root system of white lupin showed that local P supply had an additional effect on the formation of cluster roots, and that this cluster root formation depended on an interaction between local P supply and shoot P concentration (Shane et al., 2003).
