ArticleJournal of experimental botany2018
Shade compromises the photosynthetic efficiency of NADP-ME less than that of PEP-CK and NAD-ME C4 grasses.
Article in Journal of experimental botany, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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23 citing papers in PubMed, 71 citations in OpenAlex.
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- PhotoGEA: An R Package for Closer Fitting of Photosynthetic Gas Exchange Data With Non-Gaussian Confidence Interval Estimation.Plant, cell & environment · 2025Article
- Diurnal light fitness of the C3 and C4 species from the genus Atriplex under control and drought conditions.Photosynthesis research · 2025Article
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- The Performances of Adlay (Tropical life sciences research · 2024Article
- A comprehensive assessment of photosynthetic acclimation to shade in C4 grass (Cynodon dactylon (L.) Pers.).BMC plant biology · 2024Article
- Epi-Brassinolide RegulatesInternational journal of molecular sciences · 2023Article
- The photosynthetic function analysis for leaf photooxidation in rice.Photosynthetica · 2023Article
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- A single promoter-TALE system for tissue-specific and tuneable expression of multiple genes in rice.Plant biotechnology journal · 2022Article
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- Distinct CPlant direct · 2021Article
- Mehler reaction plays a role in CPhotosynthesis research · 2021Article
- Can improved canopy light transmission ameliorate loss of photosynthetic efficiency in the shade? An investigation of natural variation in Sorghum bicolor.Journal of experimental botany · 2021Article
- Formation of Proto-Kranz in C3 Rice Induced by Spike-Stalk Injection Method.International journal of molecular sciences · 2021Article
- Installation of CPlant biotechnology journal · 2021Article
- Genetic Diversity of CGenes · 2020Article
- Identification and evolution of CBMC plant biology · 2020Article
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The high energy cost and apparently low plasticity of C4 photosynthesis compared with C3 photosynthesis may limit the productivity and distribution of C4 plants in low light (LL) environments. C4 photosynthesis evolved numerous times, but it remains unclear how different biochemical subtypes perform under LL. We grew eight C4 grasses belonging to three biochemical subtypes [NADP-malic enzyme (NADP-ME), NAD-malic enzyme (NAD-ME), and phosphoenolpyruvate carboxykinase (PEP-CK)] under shade (16% sunlight) or control (full sunlight) conditions and measured their photosynthetic characteristics at both low and high light. We show for the first time that LL (during measurement or growth) compromised the CO2-concentrating mechanism (CCM) to a greater extent in NAD-ME than in PEP-CK or NADP-ME C4 grasses by virtue of a greater increase in carbon isotope discrimination (∆P) and bundle sheath CO2 leakiness (ϕ), and a greater reduction in photosynthetic quantum yield (Φmax). These responses were partly explained by changes in the ratios of phosphoenolpyruvate carboxylase (PEPC)/initial Rubisco activity and dark respiration/photosynthesis (Rd/A). Shade induced a greater photosynthetic acclimation in NAD-ME than in NADP-ME and PEP-CK species due to a greater Rubisco deactivation. Shade also reduced plant dry mass to a greater extent in NAD-ME and PEP-CK relative to NADP-ME grasses. In conclusion, LL compromised the co-ordination of the C4 and C3 cycles and, hence, the efficiency of the CCM to a greater extent in NAD-ME than in PEP-CK species, while CCM efficiency was less impacted by LL in NADP-ME species. Consequently, NADP-ME species are more efficient at LL, which could explain their agronomic and ecological dominance relative to other C4 grasses.
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