A perspective on photoperiodic phloem-mobile signals that control development

Abstract

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Phloem-mobile signals that are regulated by day length activate both flowering and tuber formation. Both signaling processes have numerous elements in common. In this review, FLOWERING LOCUS T and the three signals currently implicated in controlling tuberization, SP6A, miR172, and the StBEL5 complex, are discussed with a focus on their functional roles, their mechanisms of long-distance transport, and their possible interactions.

Keywords

• Phloem
• Potato
• miR172
• StBEL5
• mobile RNAs
• non-cell-autonomous