ArticleJournal of plant research2011
Mg-chelatase H subunit affects ABA signaling in stomatal guard cells, but is not an ABA receptor in Arabidopsis thaliana.
Article in Journal of plant research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.
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Who cites it
37 citing papers in PubMed, 84 citations in OpenAlex.
- A novel semi-dominant mutation inFrontiers in plant science · 2024Article
- Magnesium chelatase subunit D is not only required for chlorophyll biosynthesis and photosynthesis, but also affecting starch accumulation in Manihot esculenta Crantz.BMC plant biology · 2023Article
- Transcriptome analysis of response strategy in Hemerocallis fulva under drought stress.Genes & genomics · 2023Article
- Expression of the Arabidopsis Mg-chelatase H subunit alleviates iron deficiency-induced stress in transgenic rice.Frontiers in plant science · 2023Article
- The key clock component ZEITLUPE (ZTL) negatively regulates ABA signaling by degradation of CHLH in Arabidopsis.Frontiers in plant science · 2022Article
- Tryptophan synthase ß subunit 1 affects stomatal phenotypes inFrontiers in plant science · 2022Article
- Quantitative Proteomics Reveals the Dynamic Regulation of the Tomato Proteome in Response toInternational journal of molecular sciences · 2021Article
- Chloroplast SRP54s are Essential for Chloroplast Development in Rice.Rice (New York, N.Y.) · 2020Article
- The Arabidopsis kinase-associated protein phosphatase KAPP, interacting with protein kinases SnRK2.2/2.3/2.6, negatively regulates abscisic acid signaling.Plant molecular biology · 2020Article
- The Role of ROS Homeostasis in ABA-Induced Guard Cell Signaling.Frontiers in plant science · 2020Review
- Control of seed dormancy and germination by DOG1-AHG1 PP2C phosphatase complex via binding to heme.Nature communications · 2018Article
- A leu-rich repeat receptor-like protein kinase, FaRIPK1, interacts with the ABA receptor, FaABAR, to regulate fruit ripening in strawberry.Journal of experimental botany · 2018Article
- Photosynthesis, Light Use Efficiency, and Yield of Reduced-Chlorophyll Soybean Mutants in Field Conditions.Frontiers in plant science · 2017Article
- Light sheet microscopy reveals more gradual light attenuation in light-green versus dark-green soybean leaves.Journal of experimental botany · 2016Article
- ABA and cytokinins: challenge and opportunity for plant stress research.Plant molecular biology · 2016Review
- Survey of Genes Involved in Biosynthesis, Transport, and Signaling of Phytohormones with Focus onBioinformatics and biology insights · 2016Article
- CHLH/GUN5 Function in Tetrapyrrole Metabolism Is Correlated with Plastid Signaling but not ABA Responses in Guard Cells.Frontiers in plant science · 2016Article
- A link between magnesium-chelatase H subunit and sucrose nonfermenting 1 (SNF1)-related protein kinase SnRK2.6/OST1 in Arabidopsis guard cell signalling in response to abscisic acid.Journal of experimental botany · 2015Article
- Crucial roles of the pentatricopeptide repeat protein SOAR1 in Arabidopsis response to drought, salt and cold stresses.Plant molecular biology · 2015Article
- Structural basis and functions of abscisic acid receptors PYLs.Frontiers in plant science · 2015Review
Corrections and comments
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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
Mg-chelatase H subunit (CHLH) is a multifunctional protein involved in chlorophyll synthesis, plastid-to-nucleus retrograde signaling, and ABA perception. However, whether CHLH acts as an actual ABA receptor remains controversial. Here we present evidence that CHLH affects ABA signaling in stomatal guard cells but is not itself an ABA receptor. We screened ethyl methanesulfonate-treated Arabidopsis thaliana plants with a focus on stomatal aperture-dependent water loss in detached leaves and isolated a rapid transpiration in detached leaves 1 (rtl1) mutant that we identified as a novel missense mutant of CHLH. The rtl1 and CHLH RNAi plants showed phenotypes in which stomatal movements were insensitive to ABA, while the rtl1 phenotype showed normal sensitivity to ABA with respect to seed germination and root growth. ABA-binding analyses using (3)H-labeled ABA revealed that recombinant CHLH did not bind ABA, but recombinant pyrabactin resistance 1, a reliable ABA receptor used as a control, showed specific binding. Moreover, we found that the rtl1 mutant showed ABA-induced stomatal closure when a high concentration of extracellular Ca(2+) was present and that a knockout mutant of Mg-chelatase I subunit (chli1) showed the same ABA-insensitive phenotype as rtl1. These results suggest that the Mg-chelatase complex as a whole affects the ABA-signaling pathway for stomatal movements.
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