Illuminating the light inhibition of leaf respiration:
Environmental and biological controls
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Measuring RLight |
Other methods include the Laisk method, which combines multiple CO2 response curves to detect a common intercept, and use of carbon isotopes that can be scaled to the organism and ecosystem levels. |
RLight, ecosystem C cycling, and environmental change |
Starting in May 2015, I began field work to collect data on ecosystem carbon cycling during the day at Harvard Forest. It remains unknown the flux of carbon from the leaves of temperate forest species in the light, and how these fluxes are modified by leaf development and seasonal timing (phenology) and short-term changes in temperature and canopy position.
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Related publications |
Tcherkez G, Gauthier P, Buckley T, Busch F, Barbour MM, Bruhn D, Heskel MA, Gong XY, Crous KY, Griffin KL, Way DA, Turnbull MH, Adams M, Atkin OK, Farquhar GD, Cornic G. (2017) Leaf day respiration: low CO2 flux but high significance for metabolism and carbon balance. New Phytologist. Accepted.
Tcherkez G, Gauthier P, Buckley T, Busch F, Barbour MM, Bruhn D, Heskel MA, Gong XY, Crous KY, Griffin KL, Way DA, Turnbull MH, Adams M, Atkin OK, Bender M, Farquhar GD, Cornic G. (2017) Tracking the origins of the Kok effect, 70 years after its discovery. New Phytologist. 214 (2):506-510 doi: 10.1111/nph.14527 Heskel MA, OK Atkin, MH Turnbull, KL Griffin. (2013) Bringing the Kok effect to light: A review on the integration of daytime respiration and net ecosystem exchange. Ecosphere. 4 (8): art98. Griffin KL & Heskel M (2013) Breaking the cycle: How light, CO2, and O2 affect plant respiration. Plant, Cell and Environment 36 (2): 498-500. DOI: 10.1111/pce.12039 |