Phytochrome-interacting factor 4 (PIF4) regulates auxin biosynthesis at high temperature.

@article{Franklin2011PhytochromeinteractingF4,
  title={Phytochrome-interacting factor 4 (PIF4) regulates auxin biosynthesis at high temperature.},
  author={Keara A. Franklin and Sang Ho Lee and Dhaval Patel and Selva V Kumar and Angela K. Spartz and Chen Gu and Songqing Ye and Peng Yu and Gordon Breen and Jerry D. Cohen and Philip A Wigge and William M Gray},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2011},
  volume={108 50},
  pages={20231-5}
}
At high ambient temperature, plants display dramatic stem elongation in an adaptive response to heat. This response is mediated by elevated levels of the phytohormone auxin and requires auxin biosynthesis, signaling, and transport pathways. The mechanisms by which higher temperature results in greater auxin accumulation are unknown, however. A basic helix-loop-helix transcription factor, PHYTOCHROME-INTERACTING FACTOR 4 (PIF4), is also required for hypocotyl elongation in response to high… CONTINUE READING
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The AFB4 auxin receptor is a negative regulator of auxin signaling in seedlings

  • K Greenham
  • Curr Biol
  • 2011

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