ArticleAnnals of botany2019
Dynamic changes in ABA content in water-stressed Populus nigra: effects on carbon fixation and soluble carbohydrates.
Article in Annals of botany, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed, 42 citations in OpenAlex.
- Diurnal Variations in Photochemical Energy Utilization and Osmotic Adjustments in Black Poplar Leaves Under Progressive Water Stress.Plant, cell & environment · 2026Article
- Abscisic Acid-Mediated Drought Tolerance inCurrent issues in molecular biology · 2026Review
- Species-specific, accession-specific, and common responses of foliar phytohormones and morphological traits to drought and herbivory.BMC plant biology · 2026Article
- On growth and flow: hydraulic aspects of aboveground meristems.The New phytologist · 2026Review
- Leaf phenology determines the response of poplar genotypes to OThe Plant journal : for cell and molecular biology · 2025Article
- Morphophysiological responses of black pepper to recurrent water deficit.Photosynthetica · 2024Article
- Plant Physiological Analysis to Overcome Limitations to Plant Phenotyping.Plants (Basel, Switzerland) · 2023Review
- Parallels between drought and flooding: An integrated framework for plant eco-physiological responses to water stress.Plant-environment interactions (Hoboken, N.J.) · 2023Review
- Potential role of the regulatoryFrontiers in plant science · 2023Article
- Responses of wildPhotosynthetica · 2023Article
- Species-specific variation of photosynthesis and mesophyll conductance to ozone and drought in three Mediterranean oaks.Physiologia plantarum · 2022Article
- Integrating stomatal physiology and morphology: evolution of stomatal control and development of future crops.Oecologia · 2021Article
- Genotypic variation inPhysiology and molecular biology of plants : an international journal of functional plant biology · 2021Article
- Competition and Drought Alter Optimal Stomatal Strategy in Tree Seedlings.Frontiers in plant science · 2020Article
- The Possible Role of Non-Structural Carbohydrates in the Regulation of Tree Hydraulics.International journal of molecular sciences · 2019Review
- Sustainable bioenergy for climate mitigation: developing drought-tolerant trees and grasses.Annals of botany · 2019Article
- Controversies in Midday Water Potential Regulation and Stomatal Behavior Might Result From the Environment, Genotype, and/or Rootstock: Evidence From Carménère and Syrah Grapevine Varieties.Frontiers in plant science · 2019Article
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Authors and funding
14 authors at 8 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsHydraulic and chemical signals operate in tandem to regulate systemic plant responses to drought. Transport of abscisic acid (ABA) through the xylem and phloem from the root to shoot has been suggested to serve as the main signal of water deficit. There is evidence that ABA and its ABA-glycosyl-ester (ABA-GE) are also formed in leaves and stems through the chloroplastic 2-C-methylerythritol-5-phosphate (MEP) pathway. This study aimed to evaluate how hormonal and hydraulic signals contribute to optimize stomatal (gs), mesophyll (gm) and leaf hydraulic (Kleaf) conductance under well-watered and water-stressed conditions in Populus nigra (black poplar) plants. In addition, we assessed possible relationships between ABA and soluble carbohydrates within the leaf and stem.
methodsPlants were subjected to three water treatments: well-watered (WW), moderate stress (WS1) and severe stress (WS2). This experimental set-up enabled a time-course analysis of the response to water deficit at the physiological [leaf gas exchange, plant water relations, (Kleaf)], biochemical (ABA and its metabolite/catabolite quantification in xylem sap, leaves, wood, bark and roots) and molecular (gene expression of ABA biosynthesis) levels. KEY
resultsOur results showed strong coordination between gs, gm and Kleaf under water stress, which reduced transpiration and increased intrinsic water use efficiency (WUEint). Analysis of gene expression of 9-cis-epoxycarotenoid dioxygenase (NCED) and ABA content in different tissues showed a general up-regulation of the biosynthesis of this hormone and its finely-tuned catabolism in response to water stress. Significant linear relationships were found between soluble carbohydrates and ABA contents in both leaves and stems, suggesting a putative function for this hormone in carbohydrate mobilization under severe water stress.
conclusionsThis study demonstrates the tight regulation of the photosynthetic machinery by levels of ABA in different plants organs on a daily basis in both well-watered and water stress conditions to optimize WUEint and coordinate whole plant acclimation responses to drought.
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