ArticleThe Plant cell2022
Natural alleles of the abscisic acid catabolism gene ZmAbh4 modulate water use efficiency and carbon isotope discrimination in maize.
Article in The Plant cell, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 27 citations in OpenAlex.
- Natural variation inScience advances · 2026Article
- Genome evolution through polyploidy: Enhancing plant stress resilience in agriculture.Proceedings of the National Academy of Sciences of the United States of America · 2026Review
- Large Variations in the Transpiration of Sorghum Canopies Under High Evaporative Demand Are Positively Related to Water Use Efficiency.Plant, cell & environment · 2026Article
- Genome Editing Enhanced Abiotic Stress ToleranceIn Cereal Crops.Functional & integrative genomics · 2025Review
- Growth, leaf δBMC plant biology · 2025Article
- Genome editing in maize and sorghum: A comprehensive review of CRISPR/Cas9 and emerging technologies.The plant genome · 2025Review
- The combined effect of decreased stomatal density and aperture increases water use efficiency in maize.Scientific reports · 2025Article
- Embracing native diversity to enhance the maximum quantum efficiency of photosystem II in maize.Plant physiology · 2024Article
- Genomic insight into the origin, domestication, dispersal, diversification and human selection of Tartary buckwheat.Genome biology · 2024Article
- Strategies and Methods for Improving the Efficiency of CRISPR/Cas9 Gene Editing in Plant Molecular Breeding.Plants (Basel, Switzerland) · 2023Review
- Relationships between stable isotope natural abundances (δFrontiers in plant science · 2022Article
Corrections and comments
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Authors and funding
21 authors at 6 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Altering plant water use efficiency (WUE) is a promising approach for achieving sustainable crop production in changing climate scenarios. Here, we show that WUE can be tuned by alleles of a single gene discovered in elite maize (Zea mays) breeding material. Genetic dissection of a genomic region affecting WUE led to the identification of the gene ZmAbh4 as causative for the effect. CRISPR/Cas9-mediated ZmAbh4 inactivation increased WUE without growth reductions in well-watered conditions. ZmAbh4 encodes an enzyme that hydroxylates the phytohormone abscisic acid (ABA) and initiates its catabolism. Stomatal conductance is regulated by ABA and emerged as a major link between variation in WUE and discrimination against the heavy carbon isotope (Δ13C) during photosynthesis in the C4 crop maize. Changes in Δ13C persisted in kernel material, which offers an easy-to-screen proxy for WUE. Our results establish a direct physiological and genetic link between WUE and Δ13C through a single gene with potential applications in maize breeding.
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