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Fitness consequences of altering floral circadian oscillations for <i>Nicotiana attenuata</i>
Cited 26 time in
Web of Science
Cited 26 time in Scopus
- Authors
- Issue Date
- 2017-03
- Publisher
- WILEY
- Citation
- JOURNAL OF INTEGRATIVE PLANT BIOLOGY, Vol.59 No.3, pp.180-189
- Abstract
- Ecological interactions between flowers and pollinators are all about timing. Flower opening/closing and scent emissions are largely synchronized with pollinator activity, and a circadian clock regulates these rhythms. However, whether the circadian clock increases a plant's reproductive success by regulating these floral rhythms remains untested. Flowers of Nicotiana attenuata, a wild tobacco, diurnally and rhythmically open, emit scent and move vertically through a 140 degrees arc to interact with nocturnal hawkmoths. We tethered flowers to evaluate the importance of flower positions for Manduca sexta-mediated pollinations; flower position dramatically influenced pollination. We examined the pollination success of phase-shifted flowers, silenced in circadian clock genes, NaZTL, NaLHY, and NaTOC1, by RNAi. Circadian rhythms in N. attenuata flowers are responsible for altered seed set from outcrossed pollen.
- ISSN
- 1672-9072
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