Plant hormones

Definition

Plant hormones, also known as phytohormones, are chemicals that regulate plant cell processes. They are signal molecules produced within the plant functioning in extremely low concentrations.

Latest Research and Reviews

News and Comment

  • News and Views |

    Gibberellins (GAs) control key growth and developmental processes in plants. Real-time monitoring of GA concentrations in living tissues is critical for understanding the actions of this hormone class. A first-generation optogenetic GA-nano-indicator now illuminates the effects of GA levels on cell length and light signalling.

    • Tamar Azoulay-Shemer
    • , Po-Kai Hsu
    •  & Julian I. Schroeder
    Nature Plants 3, 765–766
  • News and Views |

    Semi-dwarf cereal varieties have greatly increased crop yields due to their reduced stature, but they also reduce individual spike (ear) size. However, these traits appear to be regulated by distinct pathways, opening new opportunities to develop higher yielding crops.

    • Jonathan Atkinson
    • , Daniel von Wangenheim
    • , Leah R. Band
    •  & Malcolm J. Bennett
    Nature Plants 3, 686–687
  • News and Views |

    For multicellular organisms, long-distance communication is essential for coordination of organ growth and development. In higher plants, a dual root-to-shoot cytokinin signalling system plays a key role in adapting the growth of distant shoot organs to fluctuating environments.

    • Jean-Michel Davière
    •  & Patrick Achard
    Nature Plants 3, 17116
  • News and Views |

    A genetic screen in the model panicoid grass Setaria viridis reveals the importance of the auxin transporter AUX1 for inflorescence branching in maize, highlighting how model plants can accelerate gene discovery in complex crops.

    • Richard Sibout
    Nature Plants 3, 17060