AUTHOR=Bolouri Moghaddam Mohammad Reza , Van den Ende Wim TITLE=Sugars, the clock and transition to flowering JOURNAL=Frontiers in Plant Science VOLUME=4 YEAR=2013 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2013.00022 DOI=10.3389/fpls.2013.00022 ISSN=1664-462X ABSTRACT=

Sugars do not only act as source of energy, but they also act as signals in plants. This mini review summarizes the emerging links between sucrose-mediated signaling and the cellular networks involved in flowering time control and defense. Cross-talks with gibberellin and jasmonate signaling pathways are highlighted. The circadian clock fulfills a crucial role at the heart of cellular networks and the bilateral relation between sugar signaling and the clock is discussed. It is proposed that important factors controlling plant growth (DELLAs, PHYTOCHROME INTERACTING FACTORS, invertases, and trehalose-6-phosphate) might fulfill central roles in the transition to flowering as well. The emerging concept of “sweet immunity,” modulated by the clock, might at least partly rely on a sucrose-specific signaling pathway that needs further exploration.