Table 2.

Role of SLs in root response to nutrient stresses.

Applied Stress	Investigated Species	Obtained Results	Reference
P-deficiency (20 µM)	Arabidopsis thaliana L.	Increased number of LRs in wild-type under stress conditions, whereas SL mutants contained more LR primordia with arrested outgrowth.	[36]
N-deficiency (0.02 mM)	Oryza sativa L.	Under stress promotion of SR elongation was significantly lower in SL mutants in comparison to wild-type; treatment with racGR24 increased SR elongation in SL biosynthesis mutants to the values observed in wild-type, which was not the case in SL signalling mutant.	[43]
P-deficiency (2 µM)
N-deficiency (0.02 mM)	Oryza sativa L.	Treatment with SL biosynthesis inhibitor stopped elongation of SRs in wild-type plants under stress conditions.	[5]
P-deficiency (2 µM)
Phosphate-removed ½ MS	Oryza sativa L.	Elongation of CRs in wild-type under P-deficiency, not observed in SL mutants.	[41]