Full TGIF Record # 65668
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Web URL(s):http://onlinelibrary.wiley.com/doi/10.1046/j.1365-2494.2000.00210.x/epdf
    Last checked: 10/02/2015
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Publication Type:
i
Refereed
Author(s):Elmi, A. A.; West, C. P.; Robbins, R. T.; Kirkpatrick, T. L.
Author Affiliation:Departments of Agronomy and Plant Pathology, University of Arkansas, Fayetteville, AR
Title:Endophyte effects on reproduction of a root-knot nematode (Meloidogyne marylandi) and osmotic adjustment in tall fescue
Source:Grass and Forage Science. Vol. 55, No. 2, June 2000, p. 166-172.
# of Pages:7
Publishing Information:Oxford, Blackwell Scientific Publications
Keywords:TIC Keywords: Endophytes; Meloidogyne; Festuca arundinacea; Nematoda; Inoculation; Acremonium coenophialum; Water stress; Reproduction; Pest density; Osmotic adjustment; Plant water relations; Drought resistance; Pest resistance; Growth; Tillers (vegetative); Roots; Root weight; Shoots; Dry weight; Genotypes; Osmotic potential; Interactions
Abstract/Contents:"In a 2 x 2 x 2 factorial experiment, plants of one genotype of tall fescue (Festuca arundinacea) were grown in soil in pots in a greenhouse on two occasions. The treatments were either with (E+) or without (E-) infection by the fungal endophyte Neotyphodium coenophialum; with (N+) or without (N-) inoculation by the root-knot nematode Meloidogyne marylandi; and with or without water deficit stress. In the first experiment, nematode numbers after 5 weeks had increased 10 times in the E-/N- watered pots and 22 times in the E-/N+ stressed plants. Root dry weight was desceased in all E-/N+ plots, compared with E-/N-. In contrast, nematode numbers in all E+/N+ pots decreased to nearly zero and root dry weight was unaffected. Osmotic adjustment in the growing zone of stressed plants was -0.35 MPa in E-/N- pots, but only -0.10 MPa in E-/N+ plots. Osmotic adjustment was greatest (-0.64 MPa) in E+ pots of both nematode treatments and almost no nematodes survived in the N+ pots. In the second experiment, there was complete nematode mortality in the E+ pots. Plant water relations were unaffected by treatments, however. It is concluded that endophyte-enhanced persistence of tall fecsue in M. marylandi-infested soils that are prone to drought may be explained at least partly by endophyte protection of roots from nematode damage. Nematode inhibition by the endophyte may operate in addition to direct influences of the endophyte on enhancing drought tolerance of the host."
Language:English
References:33
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Elmi, A. A., C. P. West, R. T. Robbins, and T. L. Kirkpatrick. 2000. Endophyte effects on reproduction of a root-knot nematode (Meloidogyne marylandi) and osmotic adjustment in tall fescue. Grass Forage Sci. 55(2):p. 166-172.
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Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1046/j.1365-2494.2000.00210.x/epdf
    Last checked: 10/02/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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