Involvement of SPL15 in phenotypic alteration of sk156 . (A) Carotenoid levels in SPL loss-of-function mutants specifying nine SPL genes, including SPL15. SPL15 SALK lines in insert show details on specific carotenoid changes. (B) SPL15 transcript levels in sk156, SPL15-related Salk lines, and T156b relative to WT (Col, set at 1). Insert shows schematic diagrams of T-DNA insertion sites ‘∇’ in SPL15 SALK mutants CS2117, CS6815 and S8712.Duncan's multiple range test showed significant differences (*) of the means (± standard deviation) between sk156 and WT (Col or WS) at p < 0.05.