Effect of temporally heterogeneous light on photosynthetic light use efficiency, plant acclimation and growth in Abatia parviflora.

@article{ReySanchez2019EffectOT,
  title={Effect of temporally heterogeneous light on photosynthetic light use efficiency, plant acclimation and growth in Abatia parviflora.},
  author={Camilo Rey‐Sanchez and Juan Manuel Posada},
  journal={Functional plant biology : FPB},
  year={2019}
}
Individual leaves have a unique instantaneous photosynthetic photon flux density (PPFD) at which net photosynthetic light use efficiency (ϵL, the ratio between net photosynthesis and PPFD) is maximised (PPFDϵmax). When PPFD is above or below PPFDϵmax, efficiency declines. Thus, we hypothesised that heterogeneous PPFD conditions should increase the amount of time leaves photosynthesise at a PPFD different than PPFDϵmax and result in reduced growth. To date, this prediction has not been… 
View on PubMed
publish.csiro.au
1 Citations

One Citation

Citation Type

Citation Type

Artifleck: The Study of Artifactual Responses to Light Flecks with Inappropriate Leaves
TLDR
The results indicate that the historical practice of using experimental leaves which were constructed under homogeneous light to study leaf responses to fluctuating light may produce artifacts that generate dubious interpretations.

References

SHOWING 1-10 OF 31 REFERENCES
Patterns of dynamic irradiance affect the photosynthetic capacity and growth of dipterocarp tree seedlings
TLDR
The pattern of dynamic irradiance received by seedlings may significantly impact their growth and survival to a previously unrecognised extent, with important consequences for regeneration processes and hence forest structure and composition.
Optimal photosynthetic use of light by tropical tree crowns achieved by adjustment of individual leaf angles and nitrogen content.
TLDR
The results suggest that canopy tree leaves in this tropical forest optimize photosynthetic use of PPFD rather than N per se, and Tropical tree canopies then can be considered simple 'big-leaves' in which all constituent 'small leaves' use PPFD with the same photosynthesis efficiency.
Photosynthetic responses to dynamic light under field conditions in six tropical rainforest shrubs occuring along a light gradient
TLDR
Understory species, which grew in a highly dynamic light environment, had better capacities for utilization of rapidly fluctuating light than species from habitats with higher light availability.
Relative enhancement of photosynthesis and growth at elevated CO2 is greater under sunflecks than uniform irradiance in a tropical rain forest tree seedling
TLDR
The relatively greater enhancement of growth and photosynthesis at elevated CO 2 under sunflecks has important potential consequences for seedling regeneration processes and hence forest structure and composition.
BIRCH SEEDLING RESPONSES TO DAILY TIME COURSES OF LIGHT IN EXPERIMENTAL FOREST GAPS AND SHADEHOUSES
TLDR
The results suggest that experimental studies employing uniform light regimes, which incorporate little of the temporal variability experienced by seedlings in natural gaps, may underestimate plasticity within regenerating tree species, and the potential for species niche differences and coexistence.
Photocontrol of stem elongation in plant neighbourhoods: effects of photon fluence rate under natural conditions of radiation
TLDR
The results suggest that in even-aged populations of LAI > 1 elongation growth is promoted by the low R:FR ratio and the reduced fluence rate, which may elicit morphological adaptations in the canopy before the onset of severe competition among neighbours for the resource of light.
Sunflecks in trees and forests: from photosynthetic physiology to global change biology.
TLDR
Since sunfleck regimes and physiological responses to sunflecks should be incorporated into models to more accurately capture forest carbon dynamics, this review examines the potential effects of climate change stresses on the ability of tree species to useSunflecks.
Contributions of leaf photosynthetic capacity, leaf angle and self-shading to the maximization of net photosynthesis in Acer saccharum: a modelling assessment.
TLDR
It was found that total net photosynthetic gain was highest when whole-plant PPFD absorption and leaf ε were simultaneously maximized and that to maximize ε plants have evolved mechanisms that co-ordinate the L(A) and A(max) of individual leaves with PPFD availability.
The utilization of lightflecks for growth in four Australian rain‐forest species
TLDR
Responses of the four species to fluctuating or constant light appeared to be the result of physiological rather than morphological acclimation as net assimilation rate was more closely correlated with relative growth rate than was leaf area ratio.
Sunfleck frequency and duration affects growth rate of the understorey plant, Alocasia macrorrhiza
TLDR
Photosynthetic capacities and efficiency of sunfleck utilization were unaffected by growth light regime, indicating that there was no acclimation to the temporal distribution of light.
...
1
2
3
4
...