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Related Experiment Video

Updated: May 6, 2026

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma
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Antibodies to pollen exines.

D Southworth1, M B Singh, T Hough

  • 1Department of Biology, Southern Oregon State College, 97520, Ashland, OR, USA.

Planta
|November 14, 2013
PubMed
Summary

Researchers developed antibodies to study pollen exines. They found that sporopollenin, a key component of pollen walls, is antigenic and shares structural similarities across various plant species.

Area of Science:

  • Paleobotany
  • Immunochemistry
  • Plant Biology

Background:

  • Pollen exines are the resistant outer layers of pollen grains.
  • Sporopollenin, the primary component of pollen exines, is known for its remarkable chemical resistance.
  • The antigenic nature and structural uniformity of sporopollenin have not been fully elucidated.

Purpose of the Study:

  • To investigate the antigenic properties of sporopollenin.
  • To determine the location of antigens within the pollen exine structure.
  • To assess the structural similarity of sporopollenin across different plant species.

Main Methods:

  • Production of polyclonal antiserum and monoclonal antibodies against Calocedrus decurrens pollen exines.
  • Immunocytochemical localization using light and electron microscopy.

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  • Chemical treatment of exines to assess antibody binding.
  • Cross-reactivity testing with exines from ten gymnosperm and angiosperm species.

    • Main Results:

    • Antibodies successfully bound to antigens located within the pollen exine.
    • Chemical treatments known to alter sporopollenin significantly reduced antibody binding.
    • Cross-reactivity confirmed that the polyclonal antiserum binds to exines from diverse gymnosperm and angiosperm species.
    • Evidence suggests sporopollenin is antigenic.

    Conclusions:

    • Sporopollenin is an antigen, capable of eliciting an immune response.
    • The immunochemical approach provides a novel method for studying pollen exine structure.
    • Structural similarities in sporopollenin exist across a wide range of plant taxa, suggesting conserved properties.