Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Circadian control of isoprene emissions from oil palm (Elaeis guineensis)
AU - Wilkinson, Michael J.
AU - Owen, Susan M.
AU - Possell, Malcolm
AU - Hartwell, James
AU - Gould, Peter
AU - Hall, Anthony
AU - Vickers, Claudia
AU - Hewitt, C. N.
N1 - The definitive version is available at www.blackwell-synergy.com
PY - 2006/9
Y1 - 2006/9
N2 - The emission of isoprene from the biosphere to the atmosphere has a profound effect on the Earth's atmospheric system. Until now, it has been assumed that the primary short-term controls on isoprene emission are photosynthetically active radiation and temperature. Here we show that isoprene emissions from a tropical tree (oil palm, Elaeis guineensis) are under strong circadian control, and that the circadian clock is potentially able to gate light-induced isoprene emissions. These rhythms are robustly temperature compensated with isoprene emissions still under circadian control at 38 degrees C. This is well beyond the acknowledged temperature range of all previously described circadian phenomena in plants. Furthermore, rhythmic expression of LHY/CCA1, a genetic component of the central clock in Arabidopsis thaliana, is still maintained at these elevated temperatures in oil palm. Maintenance of the CCA1/LHY-TOC1 molecular oscillator at these temperatures in oil palm allows for the possibility that this system is involved in the control of isoprene emission rhythms. This study contradicts the accepted theory that isoprene emissions are primarily light-induced.
AB - The emission of isoprene from the biosphere to the atmosphere has a profound effect on the Earth's atmospheric system. Until now, it has been assumed that the primary short-term controls on isoprene emission are photosynthetically active radiation and temperature. Here we show that isoprene emissions from a tropical tree (oil palm, Elaeis guineensis) are under strong circadian control, and that the circadian clock is potentially able to gate light-induced isoprene emissions. These rhythms are robustly temperature compensated with isoprene emissions still under circadian control at 38 degrees C. This is well beyond the acknowledged temperature range of all previously described circadian phenomena in plants. Furthermore, rhythmic expression of LHY/CCA1, a genetic component of the central clock in Arabidopsis thaliana, is still maintained at these elevated temperatures in oil palm. Maintenance of the CCA1/LHY-TOC1 molecular oscillator at these temperatures in oil palm allows for the possibility that this system is involved in the control of isoprene emission rhythms. This study contradicts the accepted theory that isoprene emissions are primarily light-induced.
KW - isoprene
KW - oil palm
KW - diurnal variability
KW - circadian clock
KW - circadian gating
KW - PHOSPHOENOLPYRUVATE CARBOXYLASE KINASE
KW - ORGANIC-COMPOUND EMISSIONS
KW - GENE-EXPRESSION
KW - TEMPERATURE-COMPENSATION
KW - NITRATE REDUCTASE
KW - LEAF DEVELOPMENT
KW - PLANT VOLATILES
KW - ARABIDOPSIS
KW - CLOCK
KW - LEAVES
U2 - 10.1111/j.1365-313X.2006.02847.x
DO - 10.1111/j.1365-313X.2006.02847.x
M3 - Journal article
VL - 47
SP - 960
EP - 968
JO - Plant Journal
JF - Plant Journal
SN - 0960-7412
IS - 6
ER -