Results 261 to 270 of about 248,873 (310)

Photomorphogenesis of leaves: shade-avoidance and differentiation of sun and shade leaves

Photochemical & Photobiological Sciences, 2005
Leaf shape is an important factor in optimal plant growth, because leaves are the main photosynthetic organs. Plants exhibit plasticity in leaf shape and structure, allowing them to optimize photosynthetic efficiency. In Arabidopsis thaliana(L.) Heynh., several types of leaves develop differentially, according to light intensity and quality.
Gyung-Tae, Kim, Satoshi, Yano, Toshiaki, Kozuka, Hirokazu, Tsukaya   +3 more
openaire   +2 more sources

Proteomic Analysis of Shade-Avoidance Response in Tomato Leaves

Journal of Agricultural and Food Chemistry, 2007
The aim of this project was to investigate the molecular mechanisms of shade-avoidance response in tomato ( Solanum lycopersicum) plants. Plants were grown in direct sunlight in ambient temperature and in an adjacent environment under shade cloth.
Emily, Hattrup, Karlie A, Neilson, Linda, Breci, Paul A, Haynes   +3 more
openaire   +2 more sources

Chlorophyll fluorescence kinetics, photosynthetic activity, and pigment composition of blue-shade and half-shade leaves as compared to sun and shade leaves of different trees

Photosynthesis Research, 2013
The chlorophyll (Chl) fluorescence induction kinetics, net photosynthetic CO2 fixation rates P N, and composition of photosynthetic pigments of differently light exposed leaves of several trees were comparatively measured to determine the differences in photosynthetic activity and pigment adaptation of leaves.
Hartmut K, Lichtenthaler, Fatbardha, Babani, Martin, Navrátil, Claus, Buschmann   +3 more
openaire   +2 more sources

Why are evergreen leaves so contrary about shade?

Trends in Ecology & Evolution, 2008
Leaf mass per area (LMA) is one of the most widely measured of all plant functional traits. In deciduous forests, there is similarity between plastic and evolutionary responses of LMA to light gradients. In evergreens, however, LMA is lower in shaded than sunlit individuals of the same species, whereas shade-tolerant evergreens have higher LMA than ...
Lusk, Christopher H., Reich, Peter B., Montgomery, Rebecca A., Ackerly, David D., Cavender-Bares, Jeannine   +4 more
openaire   +3 more sources

Sun and shade leaves: some field investigations

Journal of Biological Education, 1983
Some simple investigations can be carried out to demonstrate how light regime affects the final form of ...
openaire   +1 more source

Contribution of intercellular reflectance to photosynthesis in shade leaves

Plant, Cell & Environment, 1996
ABSTRACTThe potential contribution of intercellular light reflectance to photosynthesis was investigated by infiltrating shade leaves with mineral oil. Infiltration of leaves of Hydrophyllum canadense and Asarum canadense with mineral oil decreased adaxial leaf reflectance but increased transmittance. As a result of the large increase in transmittance,
E. H. DeLUCIA, K. NELSON, T. C. VOGELMANN, W. K. SMITH   +3 more
openaire   +1 more source

"Sun Leaves" and "Shade Leaves": Differences in Convective Heat Dissipation

Ecology, 1968
Temperatures of radiantly heated sun and shade leaves of white oak (Quercus alba L.) were measured in a low—speed wind tunnel. In either still air or a gentle updraft the difference between ambient and leaf temperature is about 20% less for the sum leaves than for the shade leaves. Consequently the former are more effective heat dissipaters.
openaire   +1 more source

Photosynthetic symmetry of sun and shade leaves of different orientations

Oecologia, 1991
The photosynthetic responses to light of leaves irradiated on the adaxial or abaxial surfaces, were measured for plants with contrasting leaf orientations. For vertical-leaf species of open habitats (Eryngium yuccifolium and Silphium terebinthinaceum), photosynthetic rates were identical when irradiated on either surface.
Evan H, De Lucia, Hemanth D, Shenoi, Shawna L, Naidu, Thomas A, Day   +3 more
openaire   +2 more sources

Adjustments in epidermal UV‐transmittance of leaves in sun‐shade transitions

Physiologia Plantarum, 2013
Epidermal UV transmittance (TUV) and UV‐absorbing compounds were measured in sun and shade leaves of Populus tremuloides and Vicia faba exposed to contrasting light environments under field conditions to evaluate UV acclimation potentials and regulatory roles of photosynthetically active radiation (PAR) and UV in UV‐shielding.
Barnes, Paul W., Kersting, Anna R., Flint, Stephan D., Beyschlag, Wolfram, Ryel, Ronald J.   +4 more
openaire   +3 more sources

THE DEVELOPMENTAL RESPONSES OF PAPAYA LEAVES TO SIMULATED CANOPY SHADE

American Journal of Botany, 1993
The developmental responses of plants to shade underneath foliage are influenced by reductions in irradiance and shifts in spectral quality (characterized by reductions in the quantum ratio of red to far‐red wavelengths, R:FR). Previous research on the influence of shadelight on leaf development has neglected the reductions in R:FR characteristic of ...
Buisson, Daniel, Lee, David W.
openaire   +1 more source