... youngseedlings and vascular tissues of leaves and roots. Using both helps mutants and overexpression lines, we observed that, in the low-K+condition,AtHELPS affected Arabidopsis seed germination and ... compilation ª 2011 FEBSFigs 3 and S1, the AtHELPS transcript was upregulat-ed by 100 lm K+,2mm CsCl, zeatin and cold treat-ments, and downregulated by 100 mm K+ and 200 mmNaCl treatments. ... mutant and OE lines on normal Murashige and Skoog (MS) plates and in a medium containing 100 lM K+(LK). Each data point was repeated threetimes. (B) FW of the 7-day-old wild-type, helps mutant and...