ArticlePlant physiology2011
Callose synthase GSL7 is necessary for normal phloem transport and inflorescence growth in Arabidopsis.
Article in Plant physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers.
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Who cites it
77 citing papers in PubMed, 199 citations in OpenAlex.
- CYSTEINE-RICH RLK2 regulates development via callose synthase-dependent symplastic transport in Arabidopsis.Plant physiology · 2026Article
- RNAi-Mediated Attenuation of CsCalS7-Related Transcripts Mitigates Callose Accumulation and Huanglongbing Symptoms.Molecular plant pathology · 2026Article
- Grafting reveals organ-autonomous and feedback roles of root phloem development in source-sink dynamics.Journal of experimental botany · 2026Article
- Investigating phloem transport dynamics in Arabidopsis through compartmental modelling of positron emission tomography data.Plant methods · 2026Article
- Root cell wall plasticity in iron homeostasis: an overlooked frontier in plant nutrition.The New phytologist · 2026Review
- Plasmodesmata wall biomechanics: challenges and opportunities.Journal of experimental botany · 2026Review
- Cell-to-cell translocation of florigen is inhibited by low ambient temperature through abscisic acid signaling inProceedings of the National Academy of Sciences of the United States of America · 2025Article
- Developmental landscape and asymmetric gene expression in the leaf vasculature ofHorticulture research · 2025Article
- Simulation Study of the Water Ordering Effect of the β-(1,3)-Glucan Callose Biopolymer.Biomacromolecules · 2025Article
- Defense-related callose synthase PMR4 promotes root hair callose deposition and adaptation to phosphate deficiency in Arabidopsis thaliana.The Plant journal : for cell and molecular biology · 2024Article
- PLASMODESMATA-LOCATED PROTEIN 6 regulates plasmodesmal function in Arabidopsis vasculature.The Plant cell · 2024Article
- Plasmodesmata Function and Callose Deposition in Plant Disease Defense.Plants (Basel, Switzerland) · 2024Review
- Molecular mapping and candidate gene identification of two major quantitative trait loci associated with silique length in oilseed rape (Molecular breeding : new strategies in plant improvement · 2024Article
- Callose in leptoid cell walls of the mossFrontiers in plant science · 2024Article
- Glucan Synthase-like 2 is Required for Seed Initiation and Filling as Well as Pollen Fertility in Rice.Rice (New York, N.Y.) · 2023Article
- Combining single-cell RNA sequencing with spatial transcriptome analysis reveals dynamic molecular maps of cambium differentiation in the primary and secondary growth of trees.Plant communications · 2023Article
- Pollen tube invasive growth is promoted by callose.Plant reproduction · 2023Article
- Analysis of companion cell and phloem metabolism using a transcriptome-guided model of Arabidopsis metabolism.Plant physiology · 2023Article
- Callose metabolism and the regulation of cell walls and plasmodesmata during plant mutualistic and pathogenic interactions.Plant, cell & environment · 2023Review
- The maize callose synthaseMolecular breeding : new strategies in plant improvement · 2023Article
17 more citing papers are in PubMed but not listed here.
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
Abstract
One isoform of callose synthase, Glucan Synthase-Like7 (GSL7), is tightly coexpressed with two isoforms of sucrose synthase (SUS5 and SUS6) known to be confined to phloem sieve elements in Arabidopsis (Arabidopsis thaliana). Investigation of the phenotype of gsl7 mutants of Arabidopsis revealed that the sieve plate pores of stems and roots lack the callose lining seen in wild-type plants. Callose synthesis in other tissues of the plant appears to be unaffected. Although gsl7 plants show only minor phenotypic alterations during vegetative growth, flowering stems are reduced in height and all floral parts are smaller than those of wild-type plants. Several lines of evidence suggest that the reduced growth of the inflorescence is a result of carbohydrate starvation. Levels of sucrose, hexoses, and starch are lower in the terminal bud clusters of gsl7 than in those of wild-type plants. Transcript levels of "starvation" genes expressed in response to low sugars are elevated in the terminal bud clusters of gsl7 plants, at the end of the night, and during an extended night. Pulse-chase experiments with (14)CO(2) show that transport of assimilate in the flowering stem is much slower in gsl7 mutants than in wild-type plants. We suggest that the callose lining of sieve plate pores is essential for normal phloem transport because it confers favorable flow characteristics on the pores.
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