ArticlePlant physiology2023
Abscisic acid and regulation of the sugar transporter gene MdSWEET9b promote apple sugar accumulation.
Article in Plant physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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33 citing papers in PubMed, 63 citations in OpenAlex.
- WRKY transcription factors in horticultural crops: regulating quality traits and fruit stress responses.Planta · 2026Review
- Physicochemical Properties and Phytochemical Composition of 'French' Plums at Different Maturities.Foods (Basel, Switzerland) · 2026Article
- Dynamic chromatin regulatory programs of sucrose and citric acid metabolism during fruit ripening in Citrus.The Plant cell · 2026Article
- VvMYB44-VvERF045 complex is involved in abscisic acid-induced sugar accumulation by activatingHorticulture research · 2026Article
- Advances in the Regulatory Mechanism of Enzymes Involved in Soluble Sugar Metabolism in Fruits.Plants (Basel, Switzerland) · 2026Review
- Research progress on sucrose accumulation characteristics and their molecular regulatory networks in the fruits of fruit trees.Frontiers in plant science · 2026Review
- Identification of Novel Regulators of Fruit Sugar Accumulation Based on Transcriptome and WGCNA inInternational journal of molecular sciences · 2025Article
- MdMAPK6-mediated phosphorylation of MdWRKY9 regulates apple fruit ripening through interaction with MdERF5L.Horticulture research · 2025Article
- Pollen donor selection modulates fruit quality, bioactive profiles, and antioxidant capacity in 'Fengtang' plum (Prunus salicina): links to endogenous hormonal regulation.BMC plant biology · 2025Article
- Metabolomic and Transcriptomic Analyses Provide Insights into Metabolic Networks During Kiyomi Tangors Development and Ripening.Plants (Basel, Switzerland) · 2025Article
- Functional Studies and Expression Characteristics of the Vacuolar Sugar Transporter CoSWEET2a inPlants (Basel, Switzerland) · 2025Article
- AcABI5a integrates abscisic acid signaling to developmentally modulate fruit ascorbic acid biosynthesis in kiwifruit.Horticulture research · 2025Article
- Genome-Wide Identification and Expression Profiling of Plasma Membrane-Localized SWEET Gene Family Associated with Sugar Transport During Yam Tuber Development.International journal of molecular sciences · 2025Article
- Sucrose transport gene FaSWEET9a regulated by FaDOF2 transcription factor promotes sucrose accumulation in strawberry.Plant cell reports · 2025Article
- The transcription factor MdWRKY9 is involved in jasmonic acid-mediated salt stress tolerance in apple.Horticulture research · 2025Article
- Balancing sweetness: Regulatory insights into sugar accumulation in peach fruit.Plant physiology · 2025Article
- The regulatory module MdCPCL-MdILR3L mediates the synthesis of ascorbic acid and anthocyanin in apple.Plant biotechnology journal · 2025Article
- Profiling conserved transcription factor binding motifs in Phaseolus vulgaris through comparative genomics.BMC genomics · 2025Article
- The digital orchard: advanced data-driven technologies in apple breeding and genetic modification.Frontiers in plant science · 2025Review
- Combined transcriptomic and proteomic analysis reveals the response mechanisms of alfalfa to freezing stress.Frontiers in plant science · 2025Article
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Authors and funding
10 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Enhancing fruit sugar contents, especially for high-flavonoid apples with a sour taste, is one of the main goals of horticultural crop breeders. This study analyzed sugar accumulation and the underlying mechanisms in the F2 progenies of a hybridization between the high-sugar apple (Malus × domestica) variety "Gala" and high-flavonoid apple germplasm "CSR6R6". We revealed that MdSWEET9b (sugars will eventually be exported transporter) helps mediate sugar accumulation in fruits. Functional characterization of MdSWEET9b in yeast mutants lacking sugar transport as well as in overexpressing and CRISPR/Cas9 knockdown apple calli revealed MdSWEET9b could transport sucrose specifically, ultimately promoting normal yeast growth and accumulation of total sugar contents. Moreover, MdWRKY9 bound to the MdSWEET9b promoter and regulated its activity, which responded to abscisic acid (ABA) signaling. Furthermore, MdWRKY9 interacted with MdbZIP23 (basic leucine zipper) and MdbZIP46, key ABA signal transducers, at the protein and DNA levels to enhance its regulatory effect on MdSWEET9b expression, thereby influencing sugar accumulation. Based on the contents of ABA in lines with differing sugar contents and the effects of ABA treatments on fruits and calli, we revealed ABA as one of the main factors responsible for the diversity in apple fruit sugar content. The results of this study have clarified how MdSWEET9b influences fruit sugar accumulation, while also further elucidating the regulatory effects of the ABA-signaling network on fruit sugar accumulation. This work provides a basis for future explorations of the crosstalk between hormone and sugar metabolism pathways.
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