Full TGIF Record # 101500
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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
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Publication Type:
i
Refereed
Author(s):Malinowski, D. P.; Zuo, H.; Belesky, D. P.; Alloush, G. A.
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
Title:Evidence for copper binding by extracellular root exudates of tall fescue but not perennial ryegrass infected with Neotyphodium spp. endophytes
Source:Plant and Soil. Vol. 267, No. 1/2, December 2004, p. 1-12.
# of Pages:12
Publishing Information:Dordrecht, Netherlands: Kluwer Academic Publishers
Related Web URL:https://link.springer.com/article/10.1007%2Fs11104-005-2575-y
    Last checked: 10/03/2017
    Notes: Abstract only
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
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."
Language:English
References:52
Note:Tables
Graphs
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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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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