Plant Protect. Sci., 2002, 38(11):507-509 | DOI: 10.17221/10539-PPS

Role of plant cell in host-pathogen interactions: Lactuca spp.-Bremia lactucae

M. Sedlářová, A. Lebeda, P. Binarová, L. Luhová
1 Department of Botany,
2 Department of Cell Biology and Genetics,

Reactions of Lactuca spp. genotypes with different mechanisms of compatibility/incompatibility to B. lactucae race NL16 were examined. Microscopical study revealed significance of initial stages of infection for establishment of the host-pathogen relation. Incompatibility to the pathogen race is mostly expressed as hypersensitive reaction (HR). Rearrangement of cytoskeleton can participate in blocking of fungus penetration in resistant genotypes as well as support development of fungal infection structures in susceptible ones. During infection process peroxidase is activated, H2O2 released and phenolic compounds deposited. These defence processes well correspond with the expression of resistance. On the other hand, formation of callose attending pathogenesis is not directly related to incompatibility.

Keywords: Bremia lactucae; Lactuca spp.; hypersensitive response; reactive oxygen species; cytoskeleton; phenolic compounds; defence mechanisms; histochemistry

Published: December 31, 2002  Show citation

ACS AIP APA ASA Harvard Chicago Chicago Notes IEEE ISO690 MLA NLM Turabian Vancouver
Sedlářová M, Lebeda A, Binarová P, Luhová L. Role of plant cell in host-pathogen interactions: Lactuca spp.-Bremia lactucae. Plant Protect. Sci. 2002;38(SI 2 - 6th Conf EFPP):507-509. doi: 10.17221/10539-PPS.
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. BENNETT M., GALLAGHER M., FAGG J., BESTWICK C., PAUL T., BEALE M., MANSFIELD J. (1996): The hypersensitive reaction, membrane damage and accumulation of autouorescent phenolics in lettuce cells challenged by Bremia lactucae. Plant J., 9: 851-865. Go to original source...
    2. BESTWICK C.S., BROWN I.R., BENNETT M.H.R., MANSFIELD J.W. (1997): Localization of hydrogen peroxide accumulation during the hypersensitive reaction of lettuce cells to Pseudomonas syringae pv. phaseolicola. Plant Cell, 9: 209-221. Go to original source... Go to PubMed...
    3. HEATH M.C. (1999): The enigmatic hypersensitive response: induction, execution, and role. Physiol. Mol. Plant Pathol., 55: 1-3. Go to original source...
    4. L EBEDA A., P INK D.A.C., M IESLEROVÁ B. (2001): Host-parasite specificity and defence variability in the Lactuca spp.-Bremia lactucae pathosystem. J. Plant Pathol., 83: 25-35.
    5. M ANSFIELD J.W., B ENNET M.H., B ESTWICK C.S., WOODS-TOR A.M. (1997): Phenotypic expression of gene-for-gene interaction: variation from recognition to response. In: CRUTE I.R., BURDON J.J., HOLUB E.B. (eds): The Gene-for-Gene Relationship in Host-Parasite Interactions. Oxon, CAB Int.: 265-292.
    6. SEDLÁŘOVÁ M., BINAROVÁ P., LEBEDA A. (2001): Changes in microtubular alignment in Lactuca spp. (Asteraceae) epidermal cells during early stages of infection by Bremia lactucae (Peronosporaceae). Phyton, 41: 21-34.
    7. SEDLÁŘOVÁ M., LEBEDA A. (2001a): The early stages of interaction between effective and non-effective racespecific genes in Lactuca sativa, wild Lactuca spp. and Bremia lactucae (race NL 16). J. Plant Dis. Prot., 108: 477-489.
    8. S EDLÁŘOVÁ M., L EBEDA A. (2001b): Histochemical detection and role of phenolic compounds in defence response of Lactuca spp. to lettuce downy mildew (Bremia lactucae). J. Phytopathol., 149: 1-5. Go to original source...
    9. THORDAL-CHRISTENSEN H., ZHANG Z., WEI Y., COLLIGNE D.B. (1997): Subcellular localization of H 2O 2 in plants. H2O2 accumulation in papillae and hypersensitive response during the barley-powdery mildew interaction. Plant J., 11: 1187-1194. Go to original source...
    10. VAN BREUSEGEM F., VRANOVÁ E., DAT J.F., INZÉ D. (2001): The role of active oxygen species in plant signal transduction. Plant Sci., 161: 405-414. Go to original source...

    This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.


    Return to the content