Neotyphodium lolii induces a limited host defence response by Lolium perenne

Authors

  • N. Zhang
  • M. Raftery
  • Richardson Christensen
  • J. Schmid

DOI:

https://doi.org/10.33584/rps.13.2006.3050

Abstract

We have identified three proteins specifically expressed during the interaction between N. lolii and L. perenne in natural compatible associations. Two are pathogenesis-related PR-10 proteins, part of a ubiquitous plant response to pathogens. We have identified seven different L. perenne PR-10 genes and found that endophyte infection increases PR-10 transcript levels, but only mildly. Furthermore, PR-10 mRNA levels also increase in a dysfunctional symbiosis, but the two identified PR-10 proteins are absent. This suggests that part of the regulation of protein expression is at the level of translation and that PR-10 proteins could be required for the symbiosis to be functional. A third symbiosis-specific protein is a very highly expressed N. lolii superoxide dismutase. Such enzymes neutralise superoxide formed by plants as a defence mechanism. Our results suggest that N. lolii elicits a limited host defence, comparable to that elicited by arbuscular mycorrhiza. Keywords: Neotyphodium lolii, Lolium perenne, host response, proteomics, gene expresion, pathogenesis related protein PR-10, fungal superoxide dismutase

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Published

2007-01-01

How to Cite

Zhang, N., Raftery, M., Christensen, R., & Schmid, J. (2007). Neotyphodium lolii induces a limited host defence response by Lolium perenne. NZGA: Research and Practice Series, 13, 199–202. https://doi.org/10.33584/rps.13.2006.3050

Issue

Vol. 13 (2007): 6th International Symposium on Fungal Endophytes of Grasses

Section

Past volumes

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