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Oecologia

, Volume 66, Issue 1, pp 1–5 | Cite as

Fungal endophytes of grasses and their effects on an insect herbivore

  • Keith Clay
  • Tad N. Hardy
  • Abner M. HammondJr.
Original Papers

Summary

The effects of endophytic fungi (Tribe Balansiae, Clavicipitaceae, Ascomycetes) of grasses on an insect herbivore were studied by feeding paired groups of larvae of the fall armyworm (Spodoptera frugiperda, Noctuidae, Lepidoptera) leaves from either infected or uninfected individuals. Perennial ryegrass infected by “the Lolium endophyte”, tall fescue infected by Epichloe typhina, dallisgrass infected by Myriogenospora atramentosa, Texas wintergrass infected by Atkinsonella hypoxylon, and sandbur infected by Balansia obtecta were utilized. The endophytes of ryegrass and fescue previously have been shown to be toxic to mammalian herbivores and to deter feeding of some insect herbivores. In this study we extend the antiherbivore properties of those endophytes to the fall armyworm and demonstrate that fungal endophytes in three other genera have similar antiherbivore properties. For most grasses, survival and weights of fall armyworm larvae fed infected leaves were significantly lower and larval duration was significantly longer compared to larvae fed uninfected leaves. Resistance to herbivores may provide a selective advantage to endophyte-infected grasses in natural populations.

Keywords

Natural Population Paired Group Endophytic Fungus Selective Advantage Insect Herbivore 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Aasen AJ, Culvenor CCJ, Finnie EP, Kellock AW, Smith LW (1969) Alkaloids as a possible cause of ryegrass staggers in grazing livestock. Aust J Agric Res 20:71–86Google Scholar
  2. Ahmad S, Funk CR (1983) Blugrass billbug tolerance of ryegrass cultivars and selections. J Econ Entom 76:414–416Google Scholar
  3. Bacon CW, Porter JK, Robbins JD (1975) Toxicity and occurrence of Balansia on grasses from toxic fescue pastures. Appl Microbiol 29:553–556Google Scholar
  4. Bacon CW, Porter JK, Robbins JD, Luttrell ES (1977) Epichloe typhina from toxic tall fescue grasses. Appl Env Microbiol 34:576–581Google Scholar
  5. Bacon CW, Porter JK, Robbins JD (1979) Laboratory production of ergot alkaloids by species of Balansia. J Gen Microbiol 113:119–126Google Scholar
  6. Bacon CW, Porter JK, Robbins JD (1981) Ergot alkaloids biosynthesis by isolates of Balansia epichloe and B. henningsianna. Can J Bot 59:2524–2538Google Scholar
  7. Barker GM, Pottinger RP, Addison PJ (1983) Effect of tall fescue and ryegrass endophytes on Argentine stem weevil. Proc N Z Weed Pest Contr Conf 36:216–219Google Scholar
  8. Bradshaw AD (1959) Population differentiation in Agrostis tenuis Sibth. II. The incidence and significance of infection by Epichloe typhina. New Phytol 58:310–315Google Scholar
  9. Clay K (1984) The effect of the fungus Atkinsonella hypoxylon (Clavicipitaceae) on the reproductive system and demography of the grass Danthonia spicata. New Phytol 98:165–175Google Scholar
  10. Clay K, Hardy TN, Hammond AM (1985) Fungal endophytes of Cyperus and their effect on an insect herbivore. Amer J Bot (submitted)Google Scholar
  11. Corcuera LJ (1984) Effects of indole alkaloids from Gramineae on aphids. Phytochemistry 23:539–541Google Scholar
  12. Diehl WW (1950) Balansia and the Balansiae in America. Agric. Monogr. 4 U.S.D.A., Washington, D.C.Google Scholar
  13. Edgerton GW (1919) A new Balansia on Cyperus. Mycologia 11:259–261Google Scholar
  14. Everest PG (1983) Ryegrass staggers: an overview of the North Canterbury situation and possible costs to the farmer. Ann Proc N Z Grassland Assoc 44:228–229Google Scholar
  15. Fletcher LR, Harvey IC (1981) An association of a Lolium endophyte with ryegrass staggers. N Z Vet J 29:185–186Google Scholar
  16. Funk CR, Halisky PM, Johnson MC, Siegel MR, Stewart AV, Ahmad S, Hurley RH, Harvey IC (1983) An endophytic fungus and resistance to sod webworms: association in Lolium perenne L. Bio/Technology 1:189–191Google Scholar
  17. Garrett LW, Heiman ED, Pfander WH, Wilson LL (1980) Reproductive problems of pregnant mares grazing fescue pastures. J Anim Sci 51:237Google Scholar
  18. Gaynor DL, Hunt WF (1983) The relationship between nitrogen supply, endophytic fungus, and Argentine stem weevil resistance in ryegrasses. Proc N Z Grassland Assoc 44:257–263Google Scholar
  19. Groger D (1972) Ergot. In: Kadis S, Ciegler A, Ajl SJ (eds) Microbial toxins, Vol 8. Academic Press, New York, pp 321–373Google Scholar
  20. Harvey IC (1983) The Lolium endophyte: return from anonymity. Proc N Z Grassland Assoc 44:234–236Google Scholar
  21. Hoveland CS, Haaland RL, King CC, Anthony WB, Clark EM, McGuire JA, Smith LA, Grimes HW, Holliman JL (1980) Association of Epichloe typhina fungus and steer performance on tall fescue pasture. Agron J 72:1064–1065Google Scholar
  22. Latch GCM, Christensen MJ (1982) Ryegrass endophyte, incidence, and control. N Z J Agric Res 25:443–448Google Scholar
  23. Luginbill P (1928) The fall armyworm. USDA Tech Bull 34Google Scholar
  24. Luttrell ES, Bacon CW (1977) Classification of Myriogenospora in the Clavicipitaceae. Can J Bot 55:2090–2097Google Scholar
  25. Mackintosh CG, Orr MB, Gallagher RT, Harvey IC (1982) Ryegrass staggers in Canadian Wapiti deer. N Z Vet J 30:106–107Google Scholar
  26. Morgan-Jones G, Gams W (1982) Notes on hyphomycetes. XLI. An endophyte of Festuca arundinacea and the anamorph of Epichloe typhina, new taxa in one of the two new sections of Acremonium. Mycotaxon 15:311–318Google Scholar
  27. Mortimer PH, di Menna ME (1983) Ryegrass staggers: further substantiation of a Lolium endophyte aetiology and the discovery of weevil resistance of ryegrass pastures infected with Lolium endophyte. Proc N Z Grassland Assoc 44:240–243Google Scholar
  28. Mortimer PH, Barker GM, Campbell AG, di Menna ME, Smith GS (1985) The association of Lolium endophyte and resistance to Argentine stem weevil. N Z Vet J (in press)Google Scholar
  29. Neill JC (1941) The endophytes of ryegrass (Lolium perenne L.). NZ J Sci Tech 21:280–291Google Scholar
  30. Neill JC (1941) The endophytes of Lolium and Festuca. N Z J Sci Tech 23:185–193Google Scholar
  31. Pencoe NL, Martin PB (1981) Development and reproduction of fall armyworms on several wild grasses. Env Entom 10:999–1002Google Scholar
  32. Pencoe NL, Martin PB (1982) Grass hosts of fall armyworm larvae: preference and methods of determination. J Georgia Entom Soc 17:126–132Google Scholar
  33. Porter JK, Bacon CW, Robbins JD (1974) Major alkaloids of a Claviceps isolated from toxic Bermuda grass. J Agr Food Chem 22:838–841Google Scholar
  34. Porter JK, Bacon CW, Robbins JD (1979) Lysergic acid derivatives from Balansia epichloe and B. claviceps (Clavicipitaceae). J Nat Prod 42:309–314Google Scholar
  35. Porter JK, Bacon CW, Robbins JD, Betowski D (1981) Ergot alkaloid identification in Clavicipitaceae systemic fungi of pasture grasses. J Agr Food Chem 29:653–657Google Scholar
  36. Prestidge RA, Pottinger RP, Barker GM (1982) An association of lolium endophyte with ryegrass resistance to Argentine stem weevil. Proc N Z Weed Pest Cont Conf 35:199–222Google Scholar
  37. Rhoades DF, Cates RG (1976) Toward a general theory of plant antiherbivore chemistry. Rec Adv Phytochem 10:168–213Google Scholar
  38. Sampson K (1933) The systemic infection of grasses by Epichloe typhina (Pers.). Tul. Trans British Mycol Soc 18:30–47Google Scholar
  39. Siegel MC, Johnson MC, Varney DR, Nesmith WC, Buckner RC, Bush LP, Burrus PB, Jones TA, Boling JA (1984) A fungal endophyte in tall fescue: incidence and dissemination. Phytopathology 74:932–937Google Scholar
  40. Western JH, Cavett JJ (1959) The choke disease of cocksfoot (Dactylis glomerata) caused by Epichloe typhina (Fr.) Tul. Trans Brit Mycol Soc 42:298–307Google Scholar

Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • Keith Clay
    • 1
  • Tad N. Hardy
    • 2
  • Abner M. HammondJr.
    • 2
  1. 1.Department of BotanyLouisiana State UniversityBaton RougeUSA
  2. 2.Department of Entomology, Louisiana State Agricultural Experiment StationLouisiana State University Agricultural CenterBaton RougeUSA

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