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Altered sulphate deficiency stress response in chlorophyll contents in axr1. Anthocyanin (A) and chlorophyll (B) levels were measured for Col wild-type and axr1 after 5 days (for anthocyanins) or 3, 5, 7, and 9 days (for chlorophylls) of growth in +S or −S. The average of at least three replicates were shown, with the bar representing the SD. Different letters above the columns indicate a statistical significant difference (P=0.05) FW, fresh weight
