Figure 5

Root glucosinolate profiles in control and K-deficient wildtype plants. Glucosinolate profiles in roots of wildtype (Col0) A. thaliana plants grown in vertical Petri dishes in control (black) and K-deficient conditions (white). A. Glucosinolates grouped into methionine-derived aliphatic GLS (sub-divided into methylsulfynylalkyl (MS) and methylthiolalkyl (MT) compounds), tryptophan-derived indole GLS and total GLS (sum of aliphatic and indole GLS). B. Individual GLS. Note that a scale shift was introduced on the y-axis to visualize differences between control and low-K conditions for all compounds. Values are averages of three biological replicates measured in three technical replicates. Bars show standard errors, asterisks indicate the significance of a difference between control and K-starved plants (* for p < 0.05, ** for p < 0.01). Full names of all glucosinolates are given in the Additional file 4.