Changes in the photosynthetic light response curve during leaf development of field grown maize with implications for modelling canopy photosynthesis

1994 ◽  
Vol 42 (3) ◽  
pp. 217-225 ◽  
Author(s):  
C. M. Stirling ◽  
C. Aguilera ◽  
N. R. Baker ◽  
S. P. Long
Keyword(s):  
Leaf Development ◽  
Response Curve ◽  
Light Response ◽  
Canopy Photosynthesis ◽  
Light Response Curve

A model of frost impacts on seasonal photosynthesis of Eucalyptus pauciflora

1998 ◽  
Vol 25 (1) ◽  
pp. 27 ◽  
Author(s):  
David A. King ◽  
Marilyn C. Ball
Keyword(s):  
Response Curve ◽  
Time Course ◽  
Light Response ◽  
Initial Slope ◽  
Canopy Photosynthesis ◽  
Light Response Curve ◽  
Plant Sensitivity ◽  
Highly Nonlinear ◽  
Short And Long Term

A model of the time course of frost impacts on seasonal photosynthesis of Eucalyptus pauciflora Sieb. ex Spreng. was constructed, incorporating seasonal shifts in frost hardiness and both short- and long-term impacts on the initial slope and saturated level of the photosynthetic light response curve. The approach is an extension of Sands’ model (Australian Journal of Plant Physiology, 1995, 22, 603–614) which calculates daily canopy photosynthesis as a function of daily irradiance and temperatures without the impacts of cold nights. Modelled effects of frost on cumulative photosynthesis over 8 months were highly nonlinear and rather sensitive to the temporal sequence of minimum temperatures and extent of frost hardening. Most of the effects were associated with long-term damage caused by a few severe or unseasonal frosts. Shifting either plant sensitivity or minimum temperatures by several degrees had large impacts on predicted outcomes. These results are consistent with other observations that the increase in frost severity associated with land clearing is impeding eucalypt regeneration in interior Australia and may be applicable to other frost-prone areas.

Corrigendum to: A model of frost impacts on seasonal photosynthesis of Eucalyptus pauciflora [volume 25, No.1 (1998), pp 27-37]

1999 ◽  
Vol 26 (3) ◽  
pp. 299
Author(s):  
David A. King ◽  
Marilyn C. Ball
Keyword(s):  
Response Curve ◽  
Time Course ◽  
Light Response ◽  
Initial Slope ◽  
Canopy Photosynthesis ◽  
Light Response Curve ◽  
Plant Sensitivity ◽  
Highly Nonlinear ◽  
Short And Long Term

A model of the time course of frost impacts on seasonal photosynthesis of Eucalyptus pauciflora Sieb. ex Spreng. was constructed, incorporating seasonal shifts in frost hardiness and both short- and long-term impacts on the initial slope and saturated level of the photosynthetic light response curve. The approach is an extension of Sands’ model (Australian Journal of Plant Physiology, 1995, 22, 603–614) which calculates daily canopy photosynthesis as a function of daily irradiance and temperatures without the impacts of cold nights. Modelled effects of frost on cumulative photosynthesis over 8 months were highly nonlinear and rather sensitive to the temporal sequence of minimum temperatures and extent of frost hardening. Most of the effects were associated with long-term damage caused by a few severe or unseasonal frosts. Shifting either plant sensitivity or minimum temperatures by several degrees had large impacts on predicted outcomes. These results are consistent with other observations that the increase in frost severity associated with land clearing is impeding eucalypt regeneration in interior Australia and may be applicable to other frost-prone areas.

Comparison between modified exponential model and common models of light-response curve

2013 ◽  
Vol 36 (12) ◽  
pp. 1277-1285 ◽  
Author(s):  
Wei-Ying CHEN ◽  
Zhen-Yong CHEN ◽  
Fu-Yan LUO ◽  
Zheng-Song PENG ◽  
Mao-Qun YU
Keyword(s):  
Response Curve ◽  
Light Response ◽  
Exponential Model ◽  
Light Response Curve

The Photosynthesis-Light Response Curve

1992 ◽  
pp. 156-191 ◽  
Author(s):  
Richard J. Geider ◽  
Bruce A. Osborne
Keyword(s):  
Response Curve ◽  
Light Response ◽  
Light Response Curve

The impacts of leaf shape and arrangement on light interception and potential photosynthesis in southern beech (Nothofagus cunninghamii)

2004 ◽  
Vol 31 (5) ◽  
pp. 471 ◽  
Author(s):  
Stephen O. Kern ◽  
Mark J. Hovenden ◽  
Gregory J. Jordan
Keyword(s):  
Flux Density ◽  
Response Curve ◽  
Leaf Shape ◽  
Carbon Assimilation ◽  
Light Response ◽  
Light Interception ◽  
Photon Flux ◽  
Assimilation Rate ◽  
Light Response Curve ◽  
Carbon Assimilation Rate

The impact of differences in leaf shape, size and arrangement on the efficiency of light interception, and in particular the avoidance of photoinhibition, are poorly understood. We therefore estimated light exposure of branches in the cool temperate rainforest tree, Nothofagus cunninghamii (Hook.) Oerst., in which leaf shape, size and arrangement vary systematically with altitude and geographic origin. Measurements of incident photosynthetic photon flux density (PPFD) were made in the laboratory at solar angles corresponding to noon at summer solstice, winter solstice and equinox on branches collected from a common garden experiment. Tasmanian plants showed more self-shading than Victorian plants in summer and equinox. This was related to branch angle, leaf arrangement and leaf shape. Using a modelled light response-curve, we estimated the carbon assimilation rate and the flux density of excess photons at different incident PPFD. Victorian plants had higher predicted assimilation rates than Tasmanian plants in summer and equinox, but were exposed to substantially greater levels of excess photons. Because of the shape of the light-response curve, self-shading appears to reduce the plant's exposure to excess photons, thus providing photoprotection, without substantially reducing the carbon assimilation rate. This is dependent on both regional origin and season.

Mathematical modelling of the light response curve of photoinhibition of Photosystem II

2005 ◽  
Vol 84 (1-3) ◽  
pp. 21-27 ◽  
Author(s):  
Esa Tyystjärvi ◽  
Marja Hakala ◽  
Päivi Sarvikas
Keyword(s):  
Photosystem Ii ◽  
Mathematical Modelling ◽  
Response Curve ◽  
Light Response ◽  
Light Response Curve
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