ArticlePlant physiology2006
Carbon balance and circadian regulation of hydrolytic and phosphorolytic breakdown of transitory starch.
Article in Plant physiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.
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Who cites it
42 citing papers in PubMed, 112 citations in OpenAlex.
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- The plastidial α-glucan phosphorylase modulates maltodextrin metabolism and affects starch parameters in Arabidopsis thaliana.Journal of experimental botany · 2025Article
- Regulation of Crassulacean acid metabolism at the protein level in Kalanchoë laxiflora.Plant physiology · 2025Article
- Starch degradation in the bean fruit pericarp is characterized by an increase in maltose metabolism.Physiologia plantarum · 2022Article
- Breaking Dawn: The twilight of starch degradation in the light.Plant physiology · 2022Article
- Rising rates of starch degradation during daytime and trehalose 6-phosphate optimize carbon availability.Plant physiology · 2022Article
- How Stress Affects Your Budget-Stress Impacts on Starch Metabolism.Frontiers in plant science · 2022Review
- Targeted metabolite profiling as a top-down approach to uncover interspecies diversity and identify key conserved operational features in the Calvin-Benson cycle.Journal of experimental botany · 2021Article
- Review
- 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
- Pluronic F-68 Improves Callus Proliferation of Recalcitrant Rice CultivarFrontiers in plant science · 2021Article
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- Analysis of Non-Structural Carbohydrates and Xylem Anatomy of Leaf Petioles Offers New Insights in the Drought Response of Two Grapevine Cultivars.International journal of molecular sciences · 2020Article
- Phosphoglucoisomerase Is an Important Regulatory Enzyme in Partitioning Carbon out of the Calvin-Benson Cycle.Frontiers in plant science · 2020Article
- Photosynthetic Carbon Partitioning and Metabolic Regulation in Response to Very-Low and High COFrontiers in plant science · 2020Article
- Relationship between irradiance and levels of Calvin-Benson cycle and other intermediates in the model eudicot Arabidopsis and the model monocot rice.Journal of experimental botany · 2019Article
- Isoprene: New insights into the control of emission and mediation of stress tolerance by gene expression.Plant, cell & environment · 2019Review
- Time of day and network reprogramming during drought induced CAM photosynthesis in Sedum album.PLoS genetics · 2019Article
- A Cytosolic Bypass and G6P Shunt in Plants Lacking Peroxisomal Hydroxypyruvate Reductase.Plant physiology · 2019Article
- Maltose Processing and Not β-Amylase Activity Curtails Hydrolytic Starch Degradation in the CAM OrchidFrontiers in plant science · 2019Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Transitory starch is formed in chloroplasts during the day and broken down at night. Transitory starch degradation could be regulated by light, circadian rhythms, or carbon balance. To test the role of these potential regulators, starch breakdown rates and metabolites were measured in bean (Phaseolus vulgaris) and Arabidopsis (Arabidopsis thaliana) plants. In continuous light, starch and maltose levels oscillated in a circadian manner. Under photorespiratory conditions, transitory starch breakdown occurred in the light faster than at night and glucose-6-P (G6P) was elevated. Nonaqueous fractionation showed that the increase in G6P occurred in the chloroplast. When Arabidopsis plants lacking the plastidic starch phosphorylase enzyme were placed under photorespiratory conditions, G6P levels remained constant, indicating that the increased chloroplastic G6P resulted from phosphorolytic starch degradation. Maltose was increased under photorespiratory conditions in both wild type and plants lacking starch phosphorylase, indicating that regulation of starch breakdown may occur at a point preceding the division of the hydrolytic and phosphorolytic pathways. When bean leaves were held in N2 to suppress photosynthesis and Suc synthesis without increasing photorespiration, starch breakdown did not occur and maltose and G6P levels remained constant. The redox status of the chloroplasts was found to be oxidized under conditions favoring starch degradation.
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