Phenotypes of transgenic Arabidopsis lines overexpressing EI and ES isoforms of TFIIIA under osmotic stress. (A) Overexpressing TFIIIA-EI lines (EI-3,6) and TFIIIA-ES lines (ES-3, 6, 9) and Col-0 as wild type (WT) without (top) and with (bottom) treatment of 100 mM mannitol. (B) Relative accumulation levels of TFIIIA transgene mRNA (T) in ES-3, ES-6, and ES-9 using Tubulin 8 (TUB8) as a reference gene (C).