Once in a blue moon: an unexpected evolutionary route to blue floral pigmentation in orchids
Blue flowers are rare in the hyperdiverse orchid family, and the genetic mechanisms enabling their blue delphinidin-based pigmentation remain poorly understood. Within the Australian orchid subtribe Caladeniinae (~350 spp.), repeated transitions from maroon to blue flowers, followed by reversions to maroon, provide a unique opportunity to investigate blue flower evolution. Using…
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