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Article Addendum

Plant-endophyte-herbivore interactions: More than just alkaloids?

Susanne Rasmussen, Anthony J. Parsons, Alison Popay, Hong Xue and Jonathan A. Newman

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A recent paper by Rasmussen et al. (New Phytol 2007; 173:787-97) describes the interactions between Lolium perenne cultivars with contrasting carbohydrate content and the symbiotic fungal endophyte Neotyphodium lolii at different levels of nitrogen supply. In a subsequent study undertaken by Rasmussen et al. (Plant Physiol 2008; 146:1440-53) 66 metabolic variables were analysed in the same material, revealing widespread effects of endophyte infection, N supply, and cultivar carbohydrate content on both primary and secondary metabolites. Here, we link insect numerical responses to these metabolic responses using multiple regression analysis.

Addendum to: Rasmussen S, Parsons AJ, Bassett S, Christensen MJ, Hume DE, Johnson LJ, Johnson RD, Simpson WR, Stacke C, Voisey CR, Xue H, Newman JA. High nitrogen supply and carbohydrate content reduce fungal endophyte and alkaloid concentration in Lolium perenne. New Phytol 2007; 173:787-97.
and
Rasmussen S, Parsons AJ, Fraser K, Xue H, Newman JA. Metabolic profiles of Lolium perenne are differentially affected by nitrogen supply, carbohydrate content, and fungal endophyte infection. Plant Physiol 2008; 146:1440-53.

Authors

Susanne Rasmussen

AgResearch

Anthony J. Parsons

AgResearch

Alison Popay

AgResearch

Hong Xue

AgResearch

Jonathan A. Newman

University of Guelph

Purchase article for $19

Subscribe to this journal for $79/year