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Australasian Plant Pathology

, Volume 25, Issue 3, pp 186–191 | Cite as

Antifungal activity in grasses infected with Acremonium and Epichloë endophytes

  • M. J. Christensen
Article

Abstract

A study was conducted to determine if fungal endophytes of Lolium perenne and Festuca spp. produce (or possibly induce) antifungal substances in host grasses. These studies involved 15 representative strains of six Acremonium spp., four strains of Epichloë festucae, and one isolate each of the plant pathogens Drechslera erythrospila and Rhizoctonia zeae. A quick, simple bioassay showed that plants infected with some fungal endophytes contained diffusible substances which inhibited growth of one or both pathogens. Inhibition of these fungi was also demonstrated in vitro using a dual-culture test; however, the occurrence of inhibition frequently differed between the two types of assays and between the two test fungi. The conflicting results from the two assays may reflect the presence of a number of inhibitory substances whose production differed in planta and in vitro.

Keywords

Antifungal Activity Australasian Plant Pathology Endophytic Fungus Tall Fescue Perennial Ryegrass 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Bacon, C.W. (1993) — Abiotic stress tolerances (moisture, nutrients) and photosynthesis in endophyte-infected tall fescue. Agriculture, Ecosystems and Environment 44: 123–141.CrossRefGoogle Scholar
  2. Christensen, M.J. (1995) — Variation in the ability of Acremonium endophytes of perennial ryegrass (Lolium perenne), tall fescue (Festuca arundinacea) and meadow fescue (F. pratensis) to form compatible associations in the three grasses. Mycological Research 99: 466–470.CrossRefGoogle Scholar
  3. Christensen, M.J., Latch, G.C.M. and Tapper, B.A. (1991) — Variation within isolates of Acremonium endophytes from perennial ryegrasses. Mycological Research 95: 918–923.CrossRefGoogle Scholar
  4. Christensen, M.J. and Latch, G.C.M. (1991) — Variation among isolates of Acremonium endophytes (A. coenophialum and possibly A. typhinum) from tall fescue (Festuca arundinacea). Mycological Research 95: 1123–1126.CrossRefGoogle Scholar
  5. Christensen, M.J., Leuchtmann, A., Rowan, D.D. and Tapper, B.A. (1993) — Taxonomy of Acremonium endophytes of tall fescue (Festuca arundinacea), meadow fescue (F. pratensis), and perennial ryegrass (Lolium perenne). Mycological Research 97: 1083–1092.CrossRefGoogle Scholar
  6. Gwinn, K.D. and Gavin, A.M. (1992) — Relationship between endophyte -infestation level of tall fescue seed lots and Rhizoctonia zeae seedling disease. Plant Disease: 911–914.Google Scholar
  7. Latch, G.C.M. (1993) — Physiological interactions of endophytic fungi and their hosts. Biotic stress tolerance imparted to grasses by endophytes. Agriculture, Ecosystems and Environment 44: 143–156.CrossRefGoogle Scholar
  8. Latch, G.C.M. and Christensen, M.J. (1985) — Artificial infection of grasses with endophytes. Annals of Applied Biology 107: 17–24.CrossRefGoogle Scholar
  9. Leuchtmann, A. (1994) — Isozyme relationships of Acrenzonium endophytes from twelve Festuca species. Mycological Research 98: 25–33.CrossRefGoogle Scholar
  10. Leuchtmann, A., Schardl, C.L. and Siegel, M.R. (1994) — Sexual compatibility and taxonomy of a new species of Epichloë symbiotic with fine fescue grasses. Mycologia 86: 802–812.CrossRefGoogle Scholar
  11. Shimanuki, T. (1987) — Studies on the mechanisms of the infection of Timothy with purple spot disease caused by Cladosporium phlei (Gregory) de Vries. Research Bulletin 148 Hokkaido National Experimental Station, 1.Google Scholar
  12. Siegel, M.R. and Latch, G.C.M. (1991) — Expression of antifungal activity in agar culture by isolates of grass endophytes. Mycologia 83: 529–537.CrossRefGoogle Scholar

Copyright information

© Australasian Plant Pathology Society 1996

Authors and Affiliations

  • M. J. Christensen
    • 1
  1. 1.AgResearch Grasslands Research CentrePalmerston North

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