ArticleJournal of experimental botany2018
Maize Carbohydrate partitioning defective1 impacts carbohydrate distribution, callose accumulation, and phloem function.
Article in Journal of experimental botany, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed.
- The loss of COP1 delays senescence and inhibits root growth through modulation of sucrose allocation and availability.Plant physiology · 2026Article
- Maintenance work ahead: cellulose links cell wall construction and sucrose transport.Journal of experimental botany · 2026Article
- CYSTEINE-RICH RLK2 regulates development via callose synthase-dependent symplastic transport in Arabidopsis.Plant physiology · 2026Article
- The OsWRKY15-OsSUT3 Regulatory Module Enhances Rice Pollen Fertility by Mediating Sucrose Allocation to Anthers.Plant biotechnology journal · 2026Article
- Transcriptome analysis reveals the mechanism of anthocyanin accumulation induced by leaf breakage in foxtail millet.BMC plant biology · 2025Article
- The role of plant cell walls in pest resistance: current insights and future perspectives.Journal of experimental botany · 2025Review
- Callus Culture System fromInternational journal of molecular sciences · 2025Article
- A Starch Phosphorylase, ZmPHOH, Improves Photosynthetic Recovery from Short-Term Cold Exposure in Maize.International journal of molecular sciences · 2025Article
- The Sink-Source Relationship in Cucumber (Plants (Basel, Switzerland) · 2023Article
- A Plate Growth Assay to Quantify Embryonic Root Development ofBio-protocol · 2023Article
- Alkaline α-galactosidase 2 (CsAGA2) plays a pivotal role in mediating source-sink communication in cucumber.Plant physiology · 2022Article
- Ultrastructure, adaptability, and alleviation mechanisms of photosynthetic apparatus in plants under waterlogging: A review.Photosynthetica · 2022Article
- Plasmodesmata and their role in the regulation of phloem unloading during fruit development.Current opinion in plant biology · 2021Review
- Maize Brittle Stalk2-Like3, encoding a COBRA protein, functions in cell wall formation and carbohydrate partitioning.The Plant cell · 2021Article
- Plasmodesmata play pivotal role in sucrose supply to Meloidogyne graminicola-caused giant cells in rice.Molecular plant pathology · 2021Article
- Physiological and Expressional Regulation on Photosynthesis, Starch and Sucrose Metabolism Response to Waterlogging Stress in Peanut.Frontiers in plant science · 2021Article
- Combating Dual Challenges in Maize Under High Planting Density: Stem Lodging and Kernel Abortion.Frontiers in plant science · 2021Review
- Assessment of differences in morphological and physiological leaf lodging characteristics between two cultivars of Hippeastrum rutilum.BMC plant biology · 2020Article
- Phenotypic, Transcriptomic, and Metabolomic Signatures of Root-Specifically OverexpressedFrontiers in plant science · 2020Article
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8 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Plants synthesize carbohydrates in photosynthetic tissues, with the majority of plants transporting sucrose to non-photosynthetic tissues to sustain growth and development. While the anatomical, biochemical, and physiological processes regulating sucrose long-distance transport are well characterized, little is known concerning the genes controlling whole-plant carbohydrate partitioning. To identify loci influencing carbon export from leaves, we screened mutagenized maize plants for phenotypes associated with reduced carbohydrate transport, including chlorosis and excessive starch and soluble sugars in leaves. Carbohydrate partitioning defective1 (Cpd1) was identified as a semi-dominant mutant exhibiting these phenotypes. Phloem transport experiments suggested that the hyperaccumulation of starch and soluble sugars in the Cpd1/+ mutant leaves was due to inhibited sucrose export. Interestingly, ectopic callose deposits were observed in the phloem of mutant leaves, and probably underlie the decreased transport. In addition to the carbohydrate hyperaccumulation phenotype, Cpd1/+ mutants overaccumulate benzoxazinoid defense compounds and exhibit increased tolerance when attacked by aphids. However, double mutant studies between Cpd1/+ and benzoxazinoid-less plants indicate that the ectopic callose and carbon hyperaccumulation are independent of benzoxazinoid production. Based on the formation of callose occlusions in the developing phloem, we hypothesize that the cpd1 gene functions early in phloem development, thereby impacting whole-plant carbohydrate partitioning.
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