The Circadian Clocks of Plants and Pollinators

The circadian clocks of plants and pollinators...

The exciting research of Professor Takato Imaizumi of the University of Washington.

If you read Scientific Reports, you probably remember the piece he co-authored: "Circadian Clocks of Both Plants and Pollinators Influence Flower-Seeking Behavior of the Pollinator Hawkmoth Manduca sexta," published Feb. 12, 2018.

The abstract:
"Most plant-pollinator interactions occur during specific periods during the day. To facilitate these interactions, many flowers are known to display their attractive qualities, such as scent emission and petal opening, in a daily rhythmic fashion. However, less is known about how the internal timing mechanisms (the circadian clocks) of plants and animals influence their daily interactions. We examine the role of the circadian clock in modulating the interaction between Petunia and one of its pollinators, the hawk moth Manduca sexta. We find that desynchronization of the Petunia circadian clock affects moth visitation preference for Petunia flowers. Similarly, moths with circadian time aligned to plants show stronger flower-foraging activities than moths that lack this alignment."

"Moth locomotor activity is circadian clock-regulated, although it is also strongly repressed by light. Moths show a time-dependent burst increase in flight activity during subjective night. In addition, moth antennal responsiveness to the floral scent compounds exhibits a 24-hour rhythm in both continuous light and dark conditions. This study highlights the importance of the circadian clocks in both plants and animals as a crucial factor in initiating specialized plant-pollinator relationships."

And now, Takato Imaizumi will head to the University of California, Davis to present a seminar hosted by the UC Davis Department of Entomology and Nematology.  His seminar, titled "Circadian Timing Mechanisms in Plant-Pollinator Interaction," is scheduled for 4:10 p.m., Wednesday, Oct. 30 in 122 Briggs Hall, off Kleiber Hall Drive.

"He will be speaking about his work on circadian clocks of plants and pollinators, and how circadian timing can shape plant-pollinator relationships," said molecular geneticist and physiologist Joanna Chiu, associate professor and vice chair of the UC Davis Department of Entomology and Nematology. Chiu, a UC Davis Chancellor Fellow, will introduce him.