Figure 4.

NaCl (100 mM) induced lateral root development in WT and rack1a-1 and mir393 mutant plants (a). Two weeks old seedlings were grown on NaCl plates for additional two weeks. While the WT plants showed statistically significant down-regulation in number of lateral roots the rack1a-1 and mir393ab mutants did not show any significant difference in the lateral root numbers in response to salt treatment for two weeks. (b) proposed model. Signal Integration role of RACK1 crosslinks salt and/or ABA-induced RACK1 mediated auxin receptors targeting miRNA miR393. The down-regulation of auxin signaling affects the acclimation to salinity.