Full TGIF Record # 183099
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DOI:10.2136/sssaj2005.0404
Web URL(s):https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2005.0404
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https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2005.0404
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Publication Type:
i
Refereed
Author(s):Franzluebbers, A. J.; Hill, N. S.
Author Affiliation:Franzluebbers: USDA-ARS, Watkinsville, GA; Hill: Department of Crop and Soil Sciences, University of Georgia, Athens, GA
Title:Soil carbon, nitrogen, and ergot alkaloids with short- and long-term exposure to endophyte-infected and endophyte-free tall fescue
Source:Soil Science Society of America Journal. Vol. 69, No. 2, March 2005, p. 404-412.
Publishing Information:Madison, WI: Soil Science Society of America
# of Pages:9
Keywords:TIC Keywords: Acremonium coenophialum; Biomass; Carbon sequestration; Endophyte-infected plants; Ergot alkaloids; Festuca arundinacea; Microbial activity; Nitrogen fate; Soil organic carbon; Soil sedimentation
Abstract/Contents:"Tall fescue (Festuca arundinacea Schreb.) is an important cool-season perennial forage naturally infected with an endophyte, Neotyphodium coenophialum Glenn, Bacon, & Hanlin, which produces ergot alkaloids. We conducted a controlled incubation study to determine the fate of C, N, and ergot alkaloids in tall fescue leaf tissue added to soil. The experimental setup was a factorial combination of endophyte-free (E-) and endophyte-infected (E+) leaf tissue (short term) incubated in soil exposed to 10 yr of E- and E+ tall fescue pasture (long term). Soil history of E+ compared with E- reduced C mineralization per unit of soil organic carbon (52 vs. 55 mg g-1 SOC) and the fraction of inorganic N as nitrate (0.68 vs. 0.72 g g-1), but increased ergot alkaloid concentrations in soil sediment (<1 mm; 28 vs. 12 ng g-1), coarse fraction (>1 mm + remaining leaves; 5.8 vs. 2.2 ng g-1), and water extract (0.27 vs. 0.22 ng g-1 soil). Short-term exposure of soil to E+ leaves compared with E- leaves reduced C mineralization (660 vs. 688 μg g-1 soil) and soil microbial biomass C (487 vs. 583 μg g-1 soil), but increased net N mineralization (70 vs. 59 μg g-1 soil), soil microbial biomass N (56 vs. 19 μg g-1 soil), and ergot alkaloid concentration in the coarse fraction (0.36 vs. 0.27 μg g-1 original leaf). Both short- and long-term exposure of soil to E+ tall fescue were affecting soil organic matter dynamics by altering biochemical transformations of C and N. Our results suggest that wild-type E+ tall fescue can alter soil organic C storage through a reduction in soil microbial activity. This research has also demonstrated the presence of ergot alkaloids in soil under E+ tall fescue."
Language:English
References:34
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Franzluebbers, A. J., and N. S. Hill. 2005. Soil carbon, nitrogen, and ergot alkaloids with short- and long-term exposure to endophyte-infected and endophyte-free tall fescue. Soil Science Society of America Journal. 69(2):p. 404-412.
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DOI: 10.2136/sssaj2005.0404
Web URL(s):
https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2005.0404
    Last checked: 02/28/2024
    Access conditions: Item is within a limited-access website
https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2005.0404
    Last checked: 02/28/2024
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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