Lolium perenne, Lolium arundinaceum) due to the production of peramine
and loline alkaloids (reviewed by Schardl et al.
The endophyte alkaloid that is primarily responsible for feeding deterrence was peramine (Rowan and Latch, 1994).
Interrelationships between Acremonium lolii, peramine, and lolitrem B in perennial ryegrass.
Effects of the endophyte-associated alkaloid peramine
on southern armyworm microsomal cytochrome P450, p.
lolii, shows high variability in colony morphology and in its capacity to synthesize the alkaloids ergovaline, lolitrem B, and peramine
(Christensen et al.
coenophialum endophyte (E+) produces loline, ergot, and peramine alkaloids.
However, an earlier study comparing peramine and ergot alkaloid variation found no relationship between the two alkaloids in tall fescue (Roylance et al.
Peramine, a pyrrolopyrazine alkaloid, actively deters feeding by Argentine stem weevil (Listronotus bonariensis Kuschel) (Rowan and Gaynor, 1986), a major pasture pest in New Zealand.
Up to five-fold and six-fold variation was measured in lolitrem B and peramine respectively, depending on the stage of the season, among 17 perennial ryegrass plants collected in old New Zealand pastures (Ball et al.
The pyrrolopyrazine alkaloid peramine
is produced by endophyte-infected ryegrass, tall fescue, and other grasses (Siegel et al.
Examples are peramine
, which confers protection to the hosts from damage by Argentine stem weevil (Rowan et al.
commutata Gaud (Richardson, 1996, personal communication), ergopeptine alkaloids were found in greater concentrations in plants fertilized with [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] relative to a [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] source, and peramine
did not respond to nitrogen form.