Effects of multiple climate change factors on the tall fescue-fungal endophyte symbiosis infection frequency and tissue chemistry

Effects of multiple climate change factors on the tall fescue-fungal endophyte symbiosis : infection frequency and tissue chemistry

© 2010 The Authors. New Phytologist © 2010 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 189(2011), 3 vom: 10. Feb., Seite 797-805
1. Verfasser: Brosi, Glade B (VerfasserIn)
Weitere Verfasser: McCulley, Rebecca L, Bush, Lowell P, Nelson, Jim A, Classen, Aimée T, Norby, Richard J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Alkaloids Carbon Dioxide 142M471B3J Cellulose 9004-34-6 Nitrogen N762921K75
Beschreibung
Zusammenfassung:© 2010 The Authors. New Phytologist © 2010 New Phytologist Trust.
• Climate change (altered CO(2) , warming, and precipitation) may affect plant-microbial interactions, such as the Lolium arundinaceum-Neotyphodium coenophialum symbiosis, to alter future ecosystem structure and function. • To assess this possibility, tall fescue tillers were collected from an existing climate manipulation experiment in a constructed old-field community in Tennessee (USA). Endophyte infection frequency (EIF) was determined, and infected (E+) and uninfected (E-) tillers were analysed for tissue chemistry. • The EIF of tall fescue was higher under elevated CO(2) (91% infected) than with ambient CO(2) (81%) but was not affected by warming or precipitation treatments. Within E+ tillers, elevated CO(2) decreased alkaloid concentrations of both ergovaline and loline, by c. 30%; whereas warming increased loline concentrations 28% but had no effect on ergovaline. Independent of endophyte infection, elevated CO(2) reduced concentrations of nitrogen, cellulose, hemicellulose, and lignin. • These results suggest that elevated CO(2) , more than changes in temperature or precipitation, may promote this grass-fungal symbiosis, leading to higher EIF in tall fescue in old-field communities. However, as all three climate factors are likely to change in the future, predicting the symbiotic response and resulting ecological consequences may be difficult and dependent on the specific atmospheric and climatic conditions encountered
Beschreibung:Date Completed 09.08.2011
Date Revised 08.04.2022
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/j.1469-8137.2010.03532.x