, Volume 38, Issue 2, pp 243–250

Effect of Salicylic Acid on Leaf Anatomy and Chloroplast Ultrastructure of Barley Plants

  • A.N. Uzunova
  • L.P. Popova

DOI: 10.1023/A:1007226116925

Cite this article as:
Uzunova, A. & Popova, L. Photosynthetica (2000) 38: 243. doi:10.1023/A:1007226116925


Light and electron microscopy were used to relate histological and ultrastructural differences of barley leaves treated with different concentrations of salicylic acid (SA, 100 µM-1 mM). Light microscopy revealed that the thickness of all leaf tissue components decreased in SA-treated plants. The effect was most pronounced on the width of the adaxial epidermis and on the size of the bulliform cells. The chloroplast ultrastructure was also affected by SA treatment. Swelling of grana thylakoids in various degrees, coagulation of the stroma, and increase in chloroplast volume were observed. 1 mM SA caused a vast destruction of the whole plastid structure.

abaxial and adaxial epidermisbulliform cellschloroplast volumeHordeum vulgare L.mesophyll thicknessstroma guard cellthylakoid number and lengthvascular bundles

Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • A.N. Uzunova
    • 1
  • L.P. Popova
    • 2
  1. 1.Department of Plant PhysiologySofia State University "St. Kliment Ohridski"SofiaBulgaria
  2. 2.Institute of Plant PhysiologyBulgarian Academy of SciencesSofiaBulgaria