ArticleAnnals of botany2014
Arabinogalactan protein-rich cell walls, paramural deposits and ergastic globules define the hyaline bodies of rhinanthoid Orobanchaceae haustoria.
Article in Annals of botany, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 21 citations in OpenAlex.
- Prehaustoria of root hemiparasites Rhinanthus minor and Odontites vernus (Orobanchaceae) produce lignin-rich interfacial deposits closely resembling those of attached haustoria.Annals of botany · 2026Article
- Current understanding of the role of the cell wall in Cuscuta parasitism.Plant biology (Stuttgart, Germany) · 2025Review
- One organ to infect them all: the Cuscuta haustorium.Annals of botany · 2025Review
- Molecular dissection of haustorium development in Orobanchaceae parasitic plants.Plant physiology · 2021Article
- Three-dimensional reconstructions of haustoria in two parasitic plant species in the Orobanchaceae.Plant physiology · 2021Article
- Holoparasitic plant-host interactions and their impact on Mediterranean ecosystems.Plant physiology · 2021Article
- Arabinogalactan Proteins in Plant Roots - An Update on Possible Functions.Frontiers in plant science · 2021Review
- Composition of the Reconstituted Cell Wall in Protoplast-Derived Cells of Daucus is Affected by Phytosulfokine (PSK).International journal of molecular sciences · 2019Article
- Horizontal gene transfer is more frequent with increased heterotrophy and contributes to parasite adaptation.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
- Apoplastic interactions between plants and plant root intruders.Frontiers in plant science · 2015Review
- Cell wall glycoproteins at interaction sites between parasitic giant dodder (Cuscuta reflexa) and its host Pelargonium zonale.Plant signaling & behavior · 2015Article
- Plant and algal cell walls: diversity and functionality.Annals of botany · 2014Article
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Authors and funding
5 authors at 5 institutions in 5 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsParasitic plants obtain nutrients from their hosts through organs called haustoria. The hyaline body is a specialized parenchymatous tissue occupying the central parts of haustoria in many Orobanchaceae species. The structure and functions of hyaline bodies are poorly understood despite their apparent necessity for the proper functioning of haustoria. Reported here is a cell wall-focused immunohistochemical study of the hyaline bodies of three species from the ecologically important clade of rhinanthoid Orobanchaceae.
methodsHaustoria collected from laboratory-grown and field-collected plants of Rhinanthus minor, Odontites vernus and Melampyrum pratense attached to various hosts were immunolabelled for cell wall matrix glycans and glycoproteins using specific monoclonal antibodies (mAbs). KEY
resultsHyaline body cell wall architecture differed from that of the surrounding parenchyma in all species investigated. Enrichment in arabinogalactan protein (AGP) epitopes labelled with mAbs LM2, JIM8, JIM13, JIM14 and CCRC-M7 was prominent and coincided with reduced labelling of de-esterified homogalacturonan with mAbs JIM5, LM18 and LM19. Furthermore, paramural bodies, intercellular deposits and globular ergastic bodies composed of pectins, xyloglucans, extensins and AGPs were common. In Rhinanthus they were particularly abundant in pairings with legume hosts. Hyaline body cells were not in direct contact with haustorial xylem, which was surrounded by a single layer of paratracheal parenchyma with thickened cell walls abutting the xylem.
conclusionsThe distinctive anatomy and cell wall architecture indicate hyaline body specialization. Altered proportions of AGPs and pectins may affect the mechanical properties of hyaline body cell walls. This and the association with a transfer-like type of paratracheal parenchyma suggest a role in nutrient translocation. Organelle-rich protoplasts and the presence of exceptionally profuse intra- and intercellular wall materials when attached to a nitrogen-fixing host suggest subsequent processing and transient storage of nutrients. AGPs might therefore be implicated in nutrient transfer and metabolism in haustoria.
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