ArticleThe Plant cell2021
Maize Brittle Stalk2-Like3, encoding a COBRA protein, functions in cell wall formation and carbohydrate partitioning.
Article in The Plant cell, 2021. 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, 34 citations in OpenAlex.
- Maintenance work ahead: cellulose links cell wall construction and sucrose transport.Journal of experimental botany · 2026Article
- Transcriptomic and proteomic insights into the molecular mechanism underlying cell wall biosynthesis in Moso bamboo (Phyllostachys edulis).Plant cell reports · 2026Article
- Article
- Expression of sugarcane COBRA-Like genes, ScBC1 and ScBC1L2, increases plant biomass.BMC plant biology · 2025Article
- Transcriptome analysis reveals the mechanism of anthocyanin accumulation induced by leaf breakage in foxtail millet.BMC plant biology · 2025Article
- Wheat COBRA-like GeneInternational journal of molecular sciences · 2025Article
- Comparative transcriptome analysis reveals potential regulatory genes involved in the development and strength formation of maize stalks.BMC plant biology · 2025Article
- Genome-wide identification of theFrontiers in plant science · 2025Article
- The potato sugar transporter SWEET1g affects apoplasmic sugar ratio and phloem-mobile tuber- and flower-inducing signals.Plant physiology · 2024Article
- Molecular mechanisms of heterosis under drought stress in maize hybrids Zhengdan7137 and Zhengdan7153.Frontiers in plant science · 2024Article
- A Plate Growth Assay to Quantify Embryonic Root Development ofBio-protocol · 2023Article
- Novel function of a putative TaCOBL ortholog associated with cold response.Molecular biology reports · 2023Article
- Genome-Wide Analysis and Abiotic Stress-Responsive Patterns ofPlants (Basel, Switzerland) · 2023Article
- Multi-omic characterization of the maize GPI synthesis mutant gwt1 with defects in kernel development.BMC plant biology · 2023Article
- Comparative analysis of two kinds of garlic seedings: qualities and transcriptional landscape.BMC genomics · 2023Article
- Alterations in Carbohydrate Quantities in Freeze-Dried, Relative to Fresh or Frozen Maize Leaf Disks.Biomolecules · 2023Article
- Recent genome resequencing paraded COBRA-Frontiers in plant science · 2023Article
- Alkaline α-galactosidase 2 (CsAGA2) plays a pivotal role in mediating source-sink communication in cucumber.Plant physiology · 2022Article
- Sugar traffic jam: impaired cellulose deposition in the phloem retards long-distance sucrose transport.The Plant cell · 2021Article
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Authors and funding
18 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Carbohydrate partitioning from leaves to sink tissues is essential for plant growth and development. The maize (Zea mays) recessive carbohydrate partitioning defective28 (cpd28) and cpd47 mutants exhibit leaf chlorosis and accumulation of starch and soluble sugars. Transport studies with 14C-sucrose (Suc) found drastically decreased export from mature leaves in cpd28 and cpd47 mutants relative to wild-type siblings. Consistent with decreased Suc export, cpd28 mutants exhibited decreased phloem pressure in mature leaves, and altered phloem cell wall ultrastructure in immature and mature leaves. We identified the causative mutations in the Brittle Stalk2-Like3 (Bk2L3) gene, a member of the COBRA family, which is involved in cell wall development across angiosperms. None of the previously characterized COBRA genes are reported to affect carbohydrate export. Consistent with other characterized COBRA members, the BK2L3 protein localized to the plasma membrane, and the mutants condition a dwarf phenotype in dark-grown shoots and primary roots, as well as the loss of anisotropic cell elongation in the root elongation zone. Likewise, both mutants exhibit a significant cellulose deficiency in mature leaves. Therefore, Bk2L3 functions in tissue growth and cell wall development, and this work elucidates a unique connection between cellulose deposition in the phloem and whole-plant carbohydrate partitioning.
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