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. 2016 Jul 20;6:30079. doi: 10.1038/srep30079

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Expression of AUX1, PIN1 and PIN2 in root tips (0–10 mm) (A–C) of alfalfa seedlings grown for 1, 3 and 10 days on ½-strength Hoagland’s medium (pH 4.5) in the treatments of no aluminium (-Al) and aluminium stress (Al) (100 μM AlCl₃) aluminium with additional IAA (Al + IAA) (100 μM AlCl₃ + IAA) and -Al with additional IAA (-Al + IAA). Data are means ± SE of three replicates. Bars with different letters indicate a significant difference at P < 0.05 (least significant difference test).