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| Web URL(s): | https://link.springer.com/content/pdf/10.1007%2Fs11104-005-2575-y.pdf
Last checked: 10/03/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Malinowski, D. P.;
Zuo, H.;
Belesky, D. P.;
Alloush, G. A. |
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| Author Affiliation: | Malinowski and Zuo: Texas Agricultural Experiment Station, Texas A&M University, Vernon, Texas; Belesky: United States Department of Agriculture, Agricultural Research Service, Appalachian Farming Systems Research Center, Beaver, West Virginia; and Alloush: Department of Soil Science and Plant Nutrition, Tishreen University, Lattakia, Syria |
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| Title: | Evidence for copper binding by extracellular root exudates of tall fescue but not perennial ryegrass infected with Neotyphodium spp. endophytes |
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| Source: | Plant and Soil. Vol. 267, No. 1/2, December 2004, p. 1-12. |
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| Publishing Information: | Dordrecht, Netherlands: Kluwer Academic Publishers |
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| # of Pages: | 12 |
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| Related Web URL: | https://link.springer.com/article/10.1007%2Fs11104-005-2575-y
Last checked: 10/03/2017
Notes: Abstract only |
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| Keywords: | TIC Keywords: Copper; Festuca arundinacea; Lolium perenne; Acremonium coenophialum; Molybdenum; Zinc; Heavy metals; Tissue testing; Iron; Manganese; Binding; Infection; Forage; Environmental stress; Root exudates; Endophytes; Roots
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| Abstract/Contents: | "Infection of tall fescue (Festuca arundinacea Schreb.) with its endemic Neotyphodium coenophialum-endophyte (Morgan-Jones and Gams) Glenn, Bacon and Hanlin appears to reduce copper (Cu) concentrations in forage and serum of grazing animals, contributing to a range of immune-related disorders. A greenhouse experiment was conducted to identify effects of novel endophyte strains on Cu acquisition by tall fescue (Festuca arundinacea Schreb.) varieties Grasslands Flecha and Jesup infected with a novel, non ergot producing endophyte strain AR542, and two perennial ryegrass (Lolium perenne L.) varieties Aries and Quartet infected with a novel, non lolitrem B producing strain AR1, and their noninfected (E-) forms. Individual endophyte/grass associations were cultivated in nutrient solutions at 1.0 (P+) and 0.0 mM (P-) phosphorus concentrations. The Cu2+-binding activity of extracellular root exudates, and concentrations of Cu and other heavy metals in roots and shoots were measured. Extracellular root exudates of AR542-infected vs. E- tall fescue had higher Cu2+-binding activity only in P- nutrient solution as shown by lower concentration of free Cu2+ (0.096 vs. 0.188 mmol Cu2+ g-1 root DM, respectively). The Cu2+-binding activity by root exudates of perennial ryegrass was not affected by endophyte infection, but was higher (i.e., lower concentration of free Cu2+) in P- vs. P+ nutrient solution (0.068 vs. 0.114 mmol Cu2+ g-1 root DM). In this hydroponic experiment, Cu concentrations in shoots of both grasses were not a function of Cu2+-binding activity and endophyte effects on heavy metal concentrations in shoots and roots were specific for each variety. The Cu2+-binding activity of extracellular root exudates may affect Cu accumulation by field-grown, endophyte-infected tall fescue under P-limiting growth conditions and warrants verification by more specific methods." |
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| Language: | English |
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| References: | 52 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Malinowski, D. P., H. Zuo, D. P. Belesky, and G. A. Alloush. 2004. Evidence for copper binding by extracellular root exudates of tall fescue but not perennial ryegrass infected with Neotyphodium spp. endophytes. Plant Soil. 267(1/2):p. 1-12. |
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| Web URL(s):
https://link.springer.com/content/pdf/10.1007%2Fs11104-005-2575-y.pdf
Last checked: 10/03/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 13 .P55 |
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