ArticlePlant physiology2015
Cell wall maturation of Arabidopsis trichomes is dependent on exocyst subunit EXO70H4 and involves callose deposition.
Article in Plant physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.
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57 citing papers in PubMed.
- The electrofluidic brain as a basement layer for neural computation.Communications biology · 2026Review
- Genome-wide identification of theFrontiers in plant science · 2026Article
- Genome wide association study unveils the genetic basis of Orobanche crenata resistance in pea.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- A Genome-Wide Association Screen for Genes Affecting Leaf Trichome Development and Epidermal Metal Accumulation in Arabidopsis.Plant, cell & environment · 2025Article
- The role of Exo70s in plant defense against pathogens and insect pests and their application for crop breeding.Molecular breeding : new strategies in plant improvement · 2025Review
- Super pan-genome reveals extensive genomic variations associated with phenotypic divergence in Actinidia.Molecular horticulture · 2025Article
- Chitosan stimulates root hair callose deposition, endomembrane dynamics, and inhibits root hair growth.Plant, cell & environment · 2025Article
- Exocyst subunits EXO70B1 and B2 contribute to stomatal dynamics and cell wall modifications.Frontiers in plant science · 2025Article
- The impact of mechanical stress on anatomy, morphology, and gene expression in Urtica dioica L.Planta · 2024Article
- Interplay of EXO70 and MLO proteins modulates trichome cell wall composition and susceptibility to powdery mildew.The Plant cell · 2024Article
- The exocyst subunit CsExo70B promotes both fruit length and disease resistance via regulating receptor kinase abundance at plasma membrane in cucumber.Plant biotechnology journal · 2024Article
- Article
- Comparative Transcriptomics of Multi-Stress Responses inInternational journal of molecular sciences · 2023Article
- Genome-Wide Analysis of Exocyst Complex Subunit Exo70 Gene Family in Cucumber.International journal of molecular sciences · 2023Article
- The EXO70 inhibitor Endosidin2 alters plasma membrane protein composition in Arabidopsis roots.Frontiers in plant science · 2023Article
- A blast fungus zinc-finger fold effector binds to a hydrophobic pocket in host Exo70 proteins to modulate immune recognition in rice.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- A lineage-specific Exo70 is required for receptor kinase-mediated immunity in barley.Science advances · 2022Article
- Necessity of rice resistance to planthoppers for OsEXO70H3 regulating SAMSL excretion and lignin deposition in cell walls.The New phytologist · 2022Article
- An advanced method for the release, enrichment and purification of high-quality Arabidopsis thaliana rosette leaf trichomes enables profound insights into the trichome proteome.Plant methods · 2022Article
- Functional Specialization within the EXO70 Gene Family in Arabidopsis.International journal of molecular sciences · 2021Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Arabidopsis (Arabidopsis thaliana) leaf trichomes are single-cell structures with a well-studied development, but little is understood about their function. Developmental studies focused mainly on the early shaping stages, and little attention has been paid to the maturation stage. We focused on the EXO70H4 exocyst subunit, one of the most up-regulated genes in the mature trichome. We uncovered EXO70H4-dependent development of the secondary cell wall layer, highly autofluorescent and callose rich, deposited only in the upper part of the trichome. The boundary is formed between the apical and the basal parts of mature trichome by a callose ring that is also deposited in an EXO70H4-dependent manner. We call this structure the Ortmannian ring (OR). Both the secondary cell wall layer and the OR are absent in the exo70H4 mutants. Ecophysiological aspects of the trichome cell wall thickening include interference with antiherbivore defense and heavy metal accumulation. Ultraviolet B light induces EXO70H4 transcription in a CONSTITUTIVE PHOTOMORPHOGENIC1-dependent way, resulting in stimulation of trichome cell wall thickening and the OR biogenesis. EXO70H4-dependent trichome cell wall hardening is a unique phenomenon, which may be conserved among a variety of the land plants. Our analyses support a concept that Arabidopsis trichome is an excellent model to study molecular mechanisms of secondary cell wall deposition.
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