Fig. 4.
The PHO1-RSA1-dependent G × E interaction expands the root plasticity space of Col-0 to phenocopy a range of natural accessions. (A) Axis representing natural variation on PC2COL phenotype with examples of accession’s positions and root allometry phenotypes. (B) Treatments with KNO3 ABA, or IAA in rsa1-1 gain-of-function (OX) and rsa1-2 loss-of-function (KO) mutants have contrasting effects to Col-0. (C) Col-0 and rsa1 mutant alleles treated with KNO3, ABA, or IAA phenocopy the root architecture of natural variants.