Journal of integrative plant biology

How changing daily flower rhythms affects the growth and survival of Nicotiana attenuata

Circadian Biology Weekly Brief ↗PubMed ↗DOI ↗

Updated

Abstract

Circadian rhythms in Nicotiana attenuata flowers are responsible for altered seed set from outcrossed pollen.

  • Flower opening, scent emission, and movement are synchronized with pollinator activity, particularly nocturnal hawkmoths.
  • The position of flowers significantly affects the success of pollination by hawkmoths.
  • Phase-shifted flowers with silenced circadian clock genes showed changes in pollination success.
  • The circadian clock regulates floral rhythms, which may influence a plant's reproductive success.

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