Full TGIF Record # 134930
Item 1 of 1
DOI:10.1104
Web URL(s):http://www.plantphysiol.org/cgi/content/full/146/3/1440
    Last checked: 04/08/2008
    Access conditions: Item appears within a limited-access website
http://www.plantphysiol.org/cgi/reprint/146/3/1440
    Last checked: 04/16/08
    Requires: PDF Reader
Publication Type:
i
Refereed
Author(s):Rasmussen, Susanne; Parsons, Anthony J.; Fraser, Karl; Xue, Hong; Newman, Jonathan A.
Author Affiliation:Rasmussen, Parsons, Fraser, and Xue: AgResearch, Palmerston North, New Zealand; Newman: Department of Environmental Biology, University of Guelph, Ontario, Canada
Title:Metabolic profiles of Lolium perenne are differentially affected by nitrogen supply, carbohydrate content, and fungal endophyte infection
Section:Plants interacting with other organisms
Other records with the "Plants interacting with other organisms" Section
Source:Plant Physiology. Vol. 146, No. 3, March 2008, p. 1440-1453.
Publishing Information:Rockville, MD: American Society of Plant Physiologists
# of Pages:14
Keywords:TIC Keywords: Metabolism; Lolium perenne; Nitrogen; Carbohydrates; Endophytic fungi; Acremonium; Mannitol; Fungus infection
Abstract/Contents:"Lolium perenne cultivars differing in their capacity to accumulate water soluble carbohydrates (WSCs) were infected with three strains of fungal Neotyphodium lolii endophytes or left uninfected. The endophyte strains differed in their alkaloid profiles. Plants were grown at two different levels of nitrogen (N) supply in a controlled environment. Metabolic profiles of blades were analyzed using a variety of analytical methods. A total of 66 response variables were subjected to a principle components analysis and factor rotation. The first three rotated factors (46% of the total variance) were subsequently analyzed by analysis of variance. At high N supply nitrogenous compounds, organic acids and lipids were increased; WSCs, chlorogenic acid (CGA), and fibers were decreased. The high-sugar cultivar AberDove had reduced levels of nitrate, most minor amino acids, sulfur, and fibers compared to the control cultivar Fennema, whereas WSCs, CGA, and methionine were increased. In plants infected with endophytes, nitrate, several amino acids, and, magnesium were decreased; WSCs, lipids, some organic acids, and CGA were increased. Regrowth of blades was stimulated at high N, and there was a significant endophyte x cultivar interaction on regrowth. Mannitol, a fungal specific sugar alcohol, was significantly correlated with fungal biomass. Our findings suggest that effects of endophytes on metabolic profiles of L. perenne can be considerable, depending on host plant characteristics and nutrient supply, and we propose that a shift in carbon/N ratios and in secondary metabolite production as seen in our study is likely to have impacts on herbivore responses."
Language:English
References:111
Note:Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rasmussen, S., A. J. Parsons, K. Fraser, H. Xue, and J. A. Newman. 2008. Metabolic profiles of Lolium perenne are differentially affected by nitrogen supply, carbohydrate content, and fungal endophyte infection. Plant Physiol. 146(3):p. 1440-1453.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=134930
If there are problems with this record, send us feedback about record 134930.
Choices for finding the above item:
DOI: 10.1104
Web URL(s):
http://www.plantphysiol.org/cgi/content/full/146/3/1440
    Last checked: 04/08/2008
    Access conditions: Item appears within a limited-access website
http://www.plantphysiol.org/cgi/reprint/146/3/1440
    Last checked: 04/16/08
    Requires: PDF Reader
Find Item @ MSU
MSU catalog number: b2215281a
Find from within TIC:
   Digitally in TIC by record number.
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)