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An Induction System for Clustered Stomata by Sugar Solution Immersion Treatment in Arabidopsis thaliana Seedlings
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Published on: February 15, 2019

Sugars, the clock and transition to flowering.

Mohammad R Bolouri Moghaddam1, Wim Van den Ende

  • 1Laboratory of Molecular Plant Biology, The Katholieke Universiteit Leuven Leuven, Belgium.

Frontiers in Plant Science
|February 20, 2013
PubMed
Summary

Plant sugars act as signals, influencing flowering time and defense. This review explores sucrose signaling, its connections to plant hormones, the circadian clock, and potential roles in plant growth and immunity.

Keywords:
DELLAPIFT6Pcircadian clockflowering timeinvertasesugar signalingsweet immunity

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Area of Science:

  • Plant Biology
  • Molecular Plant Science
  • Plant Signaling

Background:

  • Sugars serve dual roles in plants as energy sources and signaling molecules.
  • Sucrose signaling is increasingly recognized for its impact on various plant processes.
  • Understanding these signaling pathways is crucial for plant development and defense.

Purpose of the Study:

  • To review the emerging links between sucrose-mediated signaling and cellular networks controlling flowering time and plant defense.
  • To highlight cross-talks between sugar signaling and key plant hormone pathways like gibberellin and jasmonate.
  • To discuss the role of the circadian clock in integrating sugar signals and its bilateral relationship with sugar signaling.

Main Methods:

  • This study is a mini-review, synthesizing existing research.
  • It focuses on summarizing and analyzing published data on sucrose signaling, flowering time, and defense pathways.
  • Key molecular players and signaling pathways are discussed based on current literature.

Main Results:

  • Sucrose signaling is interconnected with cellular networks regulating flowering time and defense mechanisms.
  • Cross-talk exists between sucrose signaling and gibberellin/jasmonate pathways.
  • The circadian clock plays a central role in integrating sugar signals and influences plant responses.

Conclusions:

  • Plant growth regulators like DELLAs, PHYTOCHROME INTERACTING FACTORS (PIFs), invertases, and trehalose-6-phosphate may be key in the transition to flowering, influenced by sugar signals.
  • A novel concept of 'sweet immunity,' modulated by the circadian clock, may involve sucrose-specific signaling pathways.
  • Further research is needed to fully elucidate the sucrose-specific signaling pathways involved in plant immunity and development.