The interaction between strigolactones and other plant hormones in the regulation of plant development : Review

X. Cheng, C.P. Ruyter-Spira, H.J. Bouwmeester

Research output: Contribution to journalArticleAcademicpeer-review

82 Citations (Scopus)

Abstract

Plant hormones are small molecules derived from various metabolic pathways and are important regulators of plant development. The most recently discovered phytohormone class comprises the carotenoid-derived strigolactones (SLs). For a long time these compounds were only known to be secreted into the rhizosphere where they act as signaling compounds, but now we know they are also active as endogenous plant hormones and they have been in the spotlight ever since. The initial discovery that SLs are involved in the inhibition of axillary bud outgrowth, initiated a multitude of other studies showing that SLs also play a role in defining root architecture, secondary growth, hypocotyl elongation, and seed germination, mostly in interaction with other hormones. Their coordinated action enables the plant to respond in an appropriate manner to environmental factors such as temperature, shading, day length, and nutrient availability. Here, we will review the current knowledge on the crosstalk between SLs and other plant hormones—such as auxin, cytokinin, abscisic acid (ABA), ethylene (ET), and gibberellins (GA)—during different physiological processes. We will furthermore take a bird's eye view of how this hormonal crosstalk enables plants to respond to their ever changing environments.
Original languageEnglish
Article number199
Number of pages16
JournalFrontiers in Plant Science
Volume4
DOIs
Publication statusPublished - 2013

Keywords

  • root-system architecture
  • arbuscular mycorrhizal fungi
  • f-box protein
  • polar auxin transport
  • striga-asiatica seeds
  • tiller bud outgrowth
  • arabidopsis-thaliana
  • hair development
  • shade avoidance
  • axillary buds

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