ArticlePlant physiology2022
Suppression of chloroplast triose phosphate isomerase evokes inorganic phosphate-limited photosynthesis in rice.
Article in Plant physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 34 citations in OpenAlex.
- Multi-omics analysis reveals the crucial role of ligustrum lucidum carbon dots in promoting vegetable sweetpotato growth and enhancing soil health.BMC plant biology · 2026Article
- Minor QTLs and the temperature during the grain filling stage contributed to the considerable variation in rice eating and cooking quality.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Not just Rubisco: integrated strategies to overcome the biochemical limitations of CFrontiers in plant science · 2026Review
- Effects of suppression of phosphate transporter 4;4 on COJournal of plant research · 2025Article
- Genetic improvement of phosphate-limited photosynthesis for high yield in rice.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Studies on the Phosphorus-Solubilizing Ability ofPlants (Basel, Switzerland) · 2024Article
- Differential heat-response characteristics of two plastid isoforms of triose phosphate isomerase in tomato.Plant biotechnology journal · 2024Article
- Improving plant productivity by re-tuning the regeneration of RuBP in the Calvin-Benson-Bassham cycle.The New phytologist · 2022Review
- Key factors for differential drought tolerance in two contrasting wild materials of Artemisia wellbyi identified using comparative transcriptomics.BMC plant biology · 2022Article
- Photosynthetic Enhancement, Lifespan Extension, and Leaf Area Enlargement in Flag Leaves Increased the Yield of Transgenic Rice Plants Overproducing Rubisco Under Sufficient N Fertilization.Rice (New York, N.Y.) · 2022Article
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The availability of inorganic phosphate (Pi) for ATP synthesis is thought to limit photosynthesis at elevated [CO2] when Pi regeneration via sucrose or starch synthesis is limited. We report here another mechanism for the occurrence of Pi-limited photosynthesis caused by insufficient capacity of chloroplast triose phosphate isomerase (cpTPI). In cpTPI-antisense transgenic rice (Oryza sativa) plants with 55%-86% reductions in cpTPI content, CO2 sensitivity of the rate of CO2 assimilation (A) decreased and even reversed at elevated [CO2]. The pool sizes of the Calvin-Benson cycle metabolites from pentose phosphates to 3-phosphoglycerate increased at elevated [CO2], whereas those of ATP decreased. These phenomena are similar to the typical symptoms of Pi-limited photosynthesis, suggesting sufficient capacity of cpTPI is necessary to prevent the occurrence of Pi-limited photosynthesis and that cpTPI content moderately affects photosynthetic capacity at elevated [CO2]. As there tended to be slight variations in the amounts of total leaf-N depending on the genotypes, relationships between A and the amounts of cpTPI were examined after these parameters were expressed per unit amount of total leaf-N (A/N and cpTPI/N, respectively). A/N at elevated [CO2] decreased linearly as cpTPI/N decreased before A/N sharply decreased, owing to further decreases in cpTPI/N. Within this linear range, decreases in cpTPI/N by 80% led to decreases up to 27% in A/N at elevated [CO2]. Thus, cpTPI function is crucial for photosynthesis at elevated [CO2].
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