ArticlePlant physiology2022
Starch biosynthesis in guard cells has features of both autotrophic and heterotrophic tissues.
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 12 papers.
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Who cites it
12 citing papers in PubMed, 20 citations in OpenAlex.
- LRS1 phosphorylated in response to blue light regulates stomatal opening.Journal of plant research · 2026Article
- Blue light-induced stomatal opening is associated with species-specific changes in primary metabolism but not with starch breakdown in guard cells.The New phytologist · 2025Article
- Dynamic regulation of Arabidopsis β-AMYLASE1 by glutathione and thioredoxins affects starch in guard cells.Plant physiology · 2025Article
- Metabolic modeling reveals distinct roles of sugars and carboxylic acids in stomatal opening as well as unexpected carbon fluxes.The Plant cell · 2024Article
- Starch metabolism in guard cells: At the intersection of environmental stimuli and stomatal movement.Plant physiology · 2024Review
- Modulation of the Arabidopsis Starch Metabolic Network by the Cytosolic Acetyl-CoA Pathway in the Context of the Diurnal Illumination Cycle.International journal of molecular sciences · 2024Article
- Arabidopsis Sucrose Synthase 3 (SUS3) regulates starch accumulation in guard cells at the end of day.Plant signaling & behavior · 2023Article
- Leaf starch metabolism sets the phase of stomatal rhythm.The Plant cell · 2023Article
- Gene expression profile of the developing endosperm in durum wheat provides insight into starch biosynthesis.BMC plant biology · 2023Article
- Carbohydrate metabolism and cytology of S-type cytoplasmic male sterility in wheat.Frontiers in plant science · 2023Article
- Glucose-6-P/phosphate translocator2 mediates the phosphoglucose-isomerase1-independent response to microbial volatiles.Plant physiology · 2022Article
- Proteomic Analysis Infers Optimized ATP-Production in Guard Cell Mitochondria.Physiologia plantarumArticle
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The pathway of starch synthesis in guard cells (GCs), despite the crucial role starch plays in stomatal movements, is not well understood. Here, we characterized starch dynamics in GCs of Arabidopsis (Arabidopsis thaliana) mutants lacking enzymes of the phosphoglucose isomerase-phosphoglucose mutase-ADP-glucose pyrophosphorylase starch synthesis pathway in leaf mesophyll chloroplasts or sugar transporters at the plastid membrane, such as glucose-6-phosphate/phosphate translocators, which are active in heterotrophic tissues. We demonstrate that GCs have metabolic features of both photoautotrophic and heterotrophic cells. GCs make starch using different carbon precursors depending on the time of day, which can originate both from GC photosynthesis and/or sugars imported from the leaf mesophyll. Furthermore, we unravel the major enzymes involved in GC starch synthesis and demonstrate that they act in a temporal manner according to the fluctuations of stomatal aperture, which is unique for GCs. Our work substantially enhances our knowledge on GC starch metabolism and uncovers targets for manipulating GC starch dynamics to improve stomatal behavior, directly affecting plant productivity.
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