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Plant Cell. May 1990; 2(5): 437–445.
PMCID: PMC159900

Arabidopsis is susceptible to infection by a downy mildew fungus.


A population of Arabidopsis thaliana growing locally in a suburb of Zürich called Weiningen was observed to be infected with downy mildew. Plants were collected and the progress of infection was investigated in artificial inoculations in the laboratory. The plants proved to be highly susceptible, and pronounced intercellular mycelial growth, haustoria formation, conidiophore production, and sporulation of the causal organism Peronospora parasitica were all observed. The formation of oogonia, antheridia, and oospores also occurred. In contrast, Arabidopsis strain RLD was resistant to infection and none of the above structures was formed. The fungus was localized very soon after penetration of RLD leaf cells, which responded with a typical hypersensitive reaction. The differential interaction of an isolate of P. parasitica with two strains of Arabidopsis opens up the possibility of cloning resistance determinants from a host that is very amenable to genetic and molecular analysis.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Chang C, Bowman JL, DeJohn AW, Lander ES, Meyerowitz EM. Restriction fragment length polymorphism linkage map for Arabidopsis thaliana. Proc Natl Acad Sci U S A. 1988 Sep;85(18):6856–6860. [PMC free article] [PubMed]
  • Meyerowitz EM. Arabidopsis, a useful weed. Cell. 1989 Jan 27;56(2):263–269. [PubMed]
  • Nam HG, Giraudat J, Den Boer B, Moonan F, Loos WDB, Hauge BM, Goodman HM. Restriction Fragment Length Polymorphism Linkage Map of Arabidopsis thaliana. Plant Cell. 1989 Jul;1(7):699–705. [PMC free article] [PubMed]

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