ArticleScientific reports2016
A novel allele of L-galactono-1,4-lactone dehydrogenase is associated with enhanced drought tolerance through affecting stomatal aperture in common wheat.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 14 citations in OpenAlex.
- GhGLDH35A gene-mediated ROS homeostasis and stomatal movement via the ascorbic acid pathway confers alkaline stress tolerance.Journal of advanced research · 2026Article
- Wheat genomic study for genetic improvement of traits in China.Science China. Life sciences · 2022Review
- Mapping of dwarfing QTL of Ari1327, a semi-dwarf mutant of upland cotton.BMC plant biology · 2022Article
- Prediction of gene expression under drought stress in spring wheat using codon usage pattern.Saudi journal of biological sciences · 2021Article
- Elevating Ascorbate in Arabidopsis Stimulates the Production of Abscisic Acid, Phaseic Acid, and to a Lesser Extent Auxin (IAA) and Jasmonates, Resulting in Increased Expression ofInternational journal of molecular sciences · 2021Article
- Ascorbate and Thiamin: Metabolic Modulators in Plant Acclimation Responses.Plants (Basel, Switzerland) · 2020Review
- Morphological and Physiological Stress Responses of Lettuce to Different Intensities of Continuous Light.Frontiers in plant science · 2019Article
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11 authors at 4 institutions in 1 country.
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Abstract
In higher plants, L-galactono-1,4-lactone dehydrogenase (GLDH) plays important roles in ascorbic acid (AsA) biosynthesis and assembly of respiration complex I. Here we report three homoeologous genes (TaGLDH-A1, -B1 and -D1) encoding common wheat GLDH isozymes and a unique allelic variant (TaGLDH-A1b) associated with enhanced drought tolerance. TaGLDH-A1, -B1 and -D1 were located on chromosomes 5A, 5B and 5D, respectively, and their transcripts were found in multiple organs. The three homoeologs each conferred increased GLDH activity when ectopically expressed in tobacco. Decreasing TaGLDH expression in wheat significantly reduced GLDH activity and AsA content. TaGLDH-A1b differed from wild type allele TaGLDH-A1a by an in-frame deletion of three nucleotides. TaGLDH-A1b was biochemically less active than TaGLDH-A1a, and the total GLDH activity levels were generally lower in the cultivars carrying TaGLDH-A1b relative to those with TaGLDH-A1a. Interestingly, TaGLDH-A1b cultivars showed stronger water deficiency tolerance than TaGLDH-A1a cultivars, and TaGLDH-A1b co-segregated with decreased leaf water loss in a F2 population. Finally, TaGLDH-A1b cultivars generally exhibited smaller leaf stomatal aperture than TaGLDH-A1a varieties in control or water deficiency environments. Our work provides new information on GLDH genes and function in higher plants. TaGLDH-A1b is likely useful for further studying and improving wheat tolerance to drought stress.
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