ArticlePlant physiology2016
Enhanced Photosynthesis and Growth in atquac1 Knockout Mutants Are Due to Altered Organic Acid Accumulation and an Increase in Both Stomatal and Mesophyll Conductance.
Article in Plant physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.
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Who cites it
31 citing papers in PubMed, 84 citations in OpenAlex.
- A drought stress-responsive metabolite malate modulates stomatal responses through G-protein-dependent pathway in grapevine and Arabidopsis.Molecular horticulture · 2026Article
- Metabolic engineering of stomatal precursor cells enhances photosynthetic water-use efficiency and vegetative growth under water-deficit conditions in Arabidopsis thaliana.Plant biotechnology journal · 2025Article
- Article
- Overexpression of chloroplastic Zea mays NADP-malic enzyme (ZmNADP-ME) confers tolerance to salt stress in Arabidopsis thaliana.Photosynthesis research · 2023Article
- Recent Updates on ALMT Transporters' Physiology, Regulation, and Molecular Evolution in Plants.Plants (Basel, Switzerland) · 2023Review
- Elevated carbon assimilation and metabolic reprogramming in tomato high pigment mutants support the increased production of pigments.Plant cell reports · 2022Article
- Metabolome and Transcriptome Analyses Unravel the Molecular Regulatory Mechanisms Involved in Photosynthesis ofInternational journal of molecular sciences · 2022Article
- Multiple ALMT subunits combine to form functional anion channels: A case study for rice ALMT7.Frontiers in plant science · 2022Article
- Sweetpotato cultivars responses to interactive effects of warming, drought, and elevated carbon dioxide.Frontiers in genetics · 2022Article
- Functional Characterization of Aluminum (Al)-Responsive Membrane-Bound NAC Transcription Factors in Soybean Roots.International journal of molecular sciences · 2021Article
- Guard cell endomembrane CaNature plants · 2021Article
- Classical phenotyping and deep learning concur on genetic control of stomatal density and area in sorghum.Plant physiology · 2021Article
- Metabolome and Transcriptome Analyses Reveal the Regulatory Mechanisms of Photosynthesis in DevelopingInternational journal of molecular sciences · 2021Article
- Photosynthesis and Related Physiological Parameters Differences Affected the Isoprene Emission Rate among 10 Typical Tree Species in Subtropical Metropolises.International journal of environmental research and public health · 2021Article
- Physiological Changes inFrontiers in plant science · 2020Article
- Effects of Zerovalent Iron Nanoparticles on Photosynthesis and Biochemical Adaptation of Soil-GrownNanomaterials (Basel, Switzerland) · 2019Article
- The Arabidopsis EPlant molecular biology · 2019Article
- The malate-activated ALMT12 anion channel in the grassThe Journal of biological chemistry · 2019Article
- Improved water use efficiency and shorter life cycle of Nicotiana tabacum due to modification of guard and vascular companion cells.Scientific reports · 2018Article
- Modifications in Organic Acid Profiles During Fruit Development and Ripening: Correlation or Causation?Frontiers in plant science · 2018Review
Corrections and comments
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Authors and funding
9 authors at 1 institution in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Stomata control the exchange of CO2 and water vapor in land plants. Thus, whereas a constant supply of CO2 is required to maintain adequate rates of photosynthesis, the accompanying water losses must be tightly regulated to prevent dehydration and undesired metabolic changes. Accordingly, the uptake or release of ions and metabolites from guard cells is necessary to achieve normal stomatal function. The AtQUAC1, an R-type anion channel responsible for the release of malate from guard cells, is essential for efficient stomatal closure. Here, we demonstrate that mutant plants lacking AtQUAC1 accumulated higher levels of malate and fumarate. These mutant plants not only display slower stomatal closure in response to increased CO2 concentration and dark but are also characterized by improved mesophyll conductance. These responses were accompanied by increases in both photosynthesis and respiration rates, without affecting the activity of photosynthetic and respiratory enzymes and the expression of other transporter genes in guard cells, which ultimately led to improved growth. Collectively, our results highlight that the transport of organic acids plays a key role in plant cell metabolism and demonstrate that AtQUAC1 reduce diffusive limitations to photosynthesis, which, at least partially, explain the observed increments in growth under well-watered conditions.
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Registered trials
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.