ArticleJournal of experimental botany2013
Sedoheptulose accumulation under CO₂ enrichment in leaves of Kalanchoë pinnata: a novel mechanism to enhance C and P homeostasis?
Article in Journal of experimental botany, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 20 citations in OpenAlex.
- Hybrid Chemoenzymatic Synthesis of CChembiochem : a European journal of chemical biology · 2022Article
- Phosphorolytic degradation of leaf starch via plastidic α-glucan phosphorylase leads to optimized plant growth and water use efficiency over the diel phases of Crassulacean acid metabolism.Journal of experimental botany · 2021Article
- Metabolomic Dynamics Reveals Oxidative Stress in Spongy Tissue Disorder During Ripening ofMetabolites · 2019Article
- Hierarchical clustering reveals unique features in the diel dynamics of metabolites in the CAM orchid Phalaenopsis.Journal of experimental botany · 2019Article
- Octulose: a forgotten metabolite?Journal of experimental botany · 2017Review
- Artificially decreased vapour pressure deficit in field conditions modifies foliar metabolite profiles in birch and aspen.Journal of experimental botany · 2016Article
- The role of transketolase and octulose in the resurrection plant Craterostigma plantagineum.Journal of experimental botany · 2016Article
- Article
- Differences in metabolites of different tongue coatings in patients with chronic hepatitis B.Evidence-based complementary and alternative medicine : eCAM · 2013Article
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Authors and funding
8 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In contrast to the well-documented roles of its mono- and bisphosphate esters, the occurrence of free sedoheptulose in plant tissues remains a matter of conjecture. The present work sought to determine the origin of sedoheptulose formation in planta, as well as its physiological importance. Elevated CO2 and sucrose induction experiments were used to study sedoheptulose metabolism in the Crassulacean acid metabolism (CAM) plants Kalanchoë pinnata and Sedum spectabile. Experimental evidence suggested that sedoheptulose is produced from the oxidative pentose phosphate pathway intermediate sedoheptulose-7-phosphate, by a sedoheptulose-7-phosphate phosphatase. Carbon flux through this pathway was stimulated by increased triose-phosphate levels (elevated CO2, compromised sink availability, and sucrose incubation of source leaves) and attenuated by ADP and inorganic phosphate (Pi). The accumulation of free sedoheptulose is proposed to act as a mechanism contributing to both C and P homeostasis by serving as an alternative carbon store under elevated CO2 or a compromised sink capacity to avoid sucrose accumulation, depletion of inorganic phosphate, and suppression of photosynthesis. It remains to be established whether this acclimation-avoiding mechanism is confined to CAM plants, which might be especially vulnerable to Pi imbalances, or whether some C3 and C4 plants also dispose of the genetic capacity to induce and accelerate sedoheptulose synthesis upon CO2 elevation.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.