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United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
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Full-Text Articles in Life Sciences
Can Improved Canopy Light Transmission Ameliorate Loss Of Photosynthetic Efficiency In The Shade An Investigation Of Natural Variation In Sorghum Bicolor, Nikhil S. Jaikumar, Samantha S. Stutz, Samuel B. Fernandes, Andrew D.B. Leakey, Carl J. Bernacchi, Patrick J. Brown, Stephen P. Long
Can Improved Canopy Light Transmission Ameliorate Loss Of Photosynthetic Efficiency In The Shade An Investigation Of Natural Variation In Sorghum Bicolor, Nikhil S. Jaikumar, Samantha S. Stutz, Samuel B. Fernandes, Andrew D.B. Leakey, Carl J. Bernacchi, Patrick J. Brown, Stephen P. Long
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Previous studies have found that maximum quantum yield of CO2 assimilation (φCO2,max,app) declines in lower canopies of maize and miscanthus, a maladaptive response to self-shading. These observations were limited to single genotypes, leaving it unclear whether the maladaptive shade response is a general property of this C4 grass tribe, the Andropogoneae. We explored the generality of this maladaptation by testing the hypothesis that erect leaf forms (erectophiles), which allow more light into the lower canopy, suffer less of a decline in photosynthetic efficiency than drooping leaf (planophile) forms. On average, φCO2,max,app declined 27% in lower canopy leaves across 35 accessions, …
The Effect Of Increasing Temperature On Crop Photosynthesis: From Enzymes To Ecosystems, Caitlin E. Moore, Katherine Meacham-Hensold, Pauline Lemonnier, Rebecca A. Slattery, Claire Benjamin, Carl J. Bernacchi, Tracy Lawson, Amanda P. Cavanagh
The Effect Of Increasing Temperature On Crop Photosynthesis: From Enzymes To Ecosystems, Caitlin E. Moore, Katherine Meacham-Hensold, Pauline Lemonnier, Rebecca A. Slattery, Claire Benjamin, Carl J. Bernacchi, Tracy Lawson, Amanda P. Cavanagh
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
As global land surface temperature continues to rise and heatwave events increase in frequency, duration, and/or intensity, our key food and fuel cropping systems will likely face increased heat-related stress. A large volume of literature exists on exploring measured and modelled impacts of rising temperature on crop photosynthesis, from enzymatic responses within the leaf up to larger ecosystem-scale responses that reflect seasonal and interannual crop responses to heat. This review discusses (i) how crop photosynthesis changes with temperature at the enzymatic scale within the leaf; (ii) how stomata and plant transport systems are affected by temperature; (iii) what features make …