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Host status of endophyte-infected and noninfected tall fescue grass to Meloidogyne spp

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Tall fescue grass cultivars with or without endophytes were evaluated for their susceptibility to Meloidogyne incognita in the greenhouse. Tall fescue cultivars evaluated included, i) wild-type Jesup (E+, ergot-producing endophyte present), ii) endophyte-free Jesup (E-, no endophyte present), iii) Jesup (Max-Q, non-ergot producing endophyte) and iv) Georgia 5 (E+). Peach (susceptible Lovell rootstock) was included as the control. Peach supported greater (P < or = 0.05) reproduction of M. incognita than all tall fescue cultivars. Differences in reproduction were not detected among the tall fescue cultivars and all cultivars were rated as either poor or nonhosts for M. incognita. Suppression of M. incognita reproduction was not influenced by endophyte status. In two other greenhouse experiments, Jesup (Max-Q) was rated as a nonhost for M. incognita (BY-peach isolate and GA-peach isolate) and M. hapla, a poor host for M. javanica and a good host for M. arenaria. Additionally, host susceptibility of Jesup (Max-Q) to Meloidogyne spp. did not appear to be related root endophyte status, but nematode species was related to host status. Jesup (Max-Q) tall fescue may have potential as a preplant control strategy for M. incognita and M. hapla in southeastern and northeastern United States, respectively.
Nyczepir, A.P. , Meyer, S.L.F.
Includes references
Journal of nematology 2010 June, v. 42, no. 2
Journal Articles, USDA Authors, Peer-Reviewed
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