The fresh weight (FW) (A, D), dry weight (DW) (B, E) and K concentration (C, F) in shoots and roots of rice seedlings. Rice seedlings were grown under K-sufficient (control) and -deficient (−K) conditions for 12 days. The shoots and roots were then used to determine FW, DW, and K concentration. Bars indicate standard errors (n = 4). Asterisks represent values that are significantly different between control and − K treatments at P < 0.05.