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Phys. Rev. Lett. 99, 098102 (2007) [4 pages]

Synchronization of Plant Circadian Oscillators with a Phase Delay Effect of the Vein Network

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Hirokazu Fukuda1,*, Norihito Nakamichi2, Mihoe Hisatsune1, Haruhiko Murase1, and Takeshi Mizuno2
1Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai 599-8531, Japan
2Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University, Chikusa-ku, Nagoya, 464-8601 Japan

Received 11 January 2007; published 29 August 2007

Synchronization phenomena in coupled circadian oscillators of plant leaves were investigated experimentally using bioluminescence technology for a clock gene. Analyzing the phase of circadian oscillation, the phase-wave propagations and the phase delay caused by the vein network were observed. We describe these phase dynamics using a two-layer model with coupled Stuart-Landau equations. Global synchronization of circadian oscillators in the leaf is also investigated.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.098102
DOI:
10.1103/PhysRevLett.99.098102
PACS:
87.19.Jj, 05.45.Xt

*fukuda@bioinfo.osakafu-u.ac.jp