ArticleJournal of experimental botany2021
Can improved canopy light transmission ameliorate loss of photosynthetic efficiency in the shade? An investigation of natural variation in Sorghum bicolor.
Article in Journal of experimental botany, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 38 citations in OpenAlex.
- Synergistic Enhancements in Maize Yield and Water Productivity: Dense Planting with Regulated Deficit Irrigation Versus Conventional Practice.Plants (Basel, Switzerland) · 2026Article
- Large Variations in the Transpiration of Sorghum Canopies Under High Evaporative Demand Are Positively Related to Water Use Efficiency.Plant, cell & environment · 2026Article
- An Integrated Monitoring Protocol to Study the Effects of Management on the C Sequestration Potential of Mediterranean Pine Ecosystems.Methods and protocols · 2026Article
- Enhancing cereal productivity via nitrogen use efficiency: from conventional breeding to modern genomics.Frontiers in genetics · 2026Review
- Shade tolerance is associated with foliar adaptations, improved radiation use efficiency, and photosynthetic rate in rice.Scientific reports · 2025Article
- Constitutive down-regulation of liguleless alleles in sorghum drives increased productivity and water use efficiency.Plant biotechnology journal · 2025Article
- Have We Selected for Higher Mesophyll Conductance in Domesticating Soybean?Plant, cell & environment · 2025Article
- Variation in shoot architecture traits and their relationship to canopy coverage and light interception in soybean (Glycine max).BMC plant biology · 2024Article
- Anatomical determinants of gas exchange and hydraulics vary with leaf shape in soybean.Annals of botany · 2023Article
- Increased bundle-sheath leakiness of COThe New phytologist · 2022Article
- A model-guided holistic review of exploiting natural variation of photosynthesis traits in crop improvement.Journal of experimental botany · 2022Review
- Evidence of photosynthetic acclimation to self-shading in sugarcane canopies.Photosynthetica · 2022Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Previous studies have found that maximum quantum yield of CO2 assimilation (Φ CO2,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, Φ CO2,max,app declined 27% in lower canopy leaves across 35 accessions, but the decline was over twice as great in planophiles than in erectophiles. The loss of photosynthetic efficiency involved a decoupling between electron transport and assimilation. This was not associated with increased bundle sheath leakage, based on 13C measurements. In both planophiles and erectophiles, shaded leaves had greater leaf absorptivity and lower activities of key C4 enzymes than sun leaves. The erectophile form is considered more productive because it allows a more effective distribution of light through the canopy to support photosynthesis. We show that in sorghum, it provides a second benefit, maintenance of higher Φ CO2,max,app to support efficient use of that light resource.
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