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A symbiosis expressed non-ribosomal peptide synthetase from a mutualistic fungal endophyte of perennial ryegrass confers protection to the symbiotum from insect herbivory.
Tanaka A, Tapper BA, Popay A, Parker EJ, Scott B. Tanaka A, et al. Mol Microbiol. 2005 Aug;57(4):1036-50. doi: 10.1111/j.1365-2958.2005.04747.x. Mol Microbiol. 2005. PMID: 16091042
The structure of peramine, a pyrrolopyrazine, suggests that it is the product of a reaction catalysed by a two-module non-ribosomal peptide synthetase (NRPS). ...A wild-type copy of perA complemented the deletion mutant, confirming that perA is a
The structure of peramine, a pyrrolopyrazine, suggests that it is the product of a reaction catalysed by a two-module n …
Importance of host plant species, Neotyphodium endophyte isolate, and alkaloids on feeding by Spodoptera frugiperda (Lepidoptera: Noctuidae) larvae.
Ball OJ, Coudron TA, Tapper BA, Davies E, Trently D, Bush LP, Gwinn KD, Popay AJ. Ball OJ, et al. J Econ Entomol. 2006 Aug;99(4):1462-73. doi: 10.1603/0022-0493-99.4.1462. J Econ Entomol. 2006. PMID: 16937705
--each infected with a number of different Neotyphodium endophyte isolates, were investigated for their effects on fall armyworm, Spodoptera frugiperda (J.E. ...Some endophyte isolates, particularly in perennial ryegrass and meadow fescue, had a major effect on feed …
--each infected with a number of different Neotyphodium endophyte isolates, were investigated for their effects on fall armyworm, Spo …
Plant-endophyte-herbivore interactions: More than just alkaloids?
Rasmussen S, Parsons AJ, Popay A, Xue H, Newman JA. Rasmussen S, et al. Plant Signal Behav. 2008 Nov;3(11):974-7. doi: 10.4161/psb.6171. Plant Signal Behav. 2008. PMID: 19704424 Free PMC article.
A recent paper by Rasmussen et al., (New Phytol 2007; 173:787-97) describes the interactions between Lolium perenne cultivars with contrasting carbohydrate content and the symbiotic fungal endophyte Neotyphodium lolii at different levels of nitrogen supply. In a sub
A recent paper by Rasmussen et al., (New Phytol 2007; 173:787-97) describes the interactions between Lolium perenne cultivars with co
Endophyte isolate and host grass effects on Chaetocnema pulicaria (Coleoptera: Chrysomelidae) feeding.
Ball OJ, Gwinn KD, Pless CD, Popay AJ. Ball OJ, et al. J Econ Entomol. 2011 Apr;104(2):665-72. doi: 10.1603/ec10262. J Econ Entomol. 2011. PMID: 21510220
Loline alkaloids seemed to play a role in antixenosis to C. pulicaria. Effects not attributable to the lolines or any other of the alkaloids examined also were observed. ...
Loline alkaloids seemed to play a role in antixenosis to C. pulicaria. Effects not attributable to the lolines or any other of the al …
A review of the Neotyphodium lolii / Lolium perenne symbiosis and its associated effects on animal and plant health, with particular emphasis on ryegrass staggers.
di Menna ME, Finch SC, Popay AJ, Smith BL. di Menna ME, et al. N Z Vet J. 2012 Nov;60(6):315-28. doi: 10.1080/00480169.2012.697429. Epub 2012 Aug 22. N Z Vet J. 2012. PMID: 22913513 Review.
Ryegrass staggers is a seasonal mycotoxicosis of grazing livestock characterised by tremors, in coordination and a staggering gait almost unaccompanied by physical lesions. ...Animals recover when moved to a different type of grazing or after rain has promote …
Ryegrass staggers is a seasonal mycotoxicosis of grazing livestock characterised by tremors, in coordination and a staggering …
Avanex Unique Endophyte Technology: Reduced Insect Food Source at Airports.
Pennell CG, Popay AJ, Rolston MP, Townsend RJ, Lloyd-West CM, Card SD. Pennell CG, et al. Environ Entomol. 2016 Feb;45(1):101-8. doi: 10.1093/ee/nvv145. Epub 2015 Sep 15. Environ Entomol. 2016. PMID: 26374758
Avanex Unique Endophyte Technology, a product specifically developed to reduce the attractiveness of airports and surrounding areas to birds, is based on a novel association between a selected strain of Epichloë endophyte and a turf-type tall fescue cu …
Avanex Unique Endophyte Technology, a product specifically developed to reduce the attractiveness of airports and surrounding areas t …
Aploneura lentisci (Homoptera: Aphididae) and Its Interactions with Fungal Endophytes in Perennial Ryegrass (Lolium perenne).
Popay AJ, Cox NR. Popay AJ, et al. Front Plant Sci. 2016 Sep 16;7:1395. doi: 10.3389/fpls.2016.01395. eCollection 2016. Front Plant Sci. 2016. PMID: 27695470 Free PMC article.
Aphids on AR37-infected plants became uncoordinated in their movement and developed tremors before dying suggesting a neurotoxin was responsible for their mortality. Results support the hypothesis that differences in A. lentisci populations due to endophyte infectio …
Aphids on AR37-infected plants became uncoordinated in their movement and developed tremors before dying suggesting a neurotoxin was …
Complex Interactions among Sheep, Insects, Grass, and Fungi in a Simple New Zealand Grazing System.
Bultman TL, McNeill MR, Krueger K, De Nicolo G, Popay AJ, Hume DE, Mace WJ, Fletcher LR, Koh YM, Sullivan TJ. Bultman TL, et al. Among authors: popay aj. J Chem Ecol. 2018 Oct;44(10):957-964. doi: 10.1007/s10886-018-0993-6. Epub 2018 Jul 26. J Chem Ecol. 2018. PMID: 30046969
Temperature and Plant Genotype Alter Alkaloid Concentrations in Ryegrass Infected with an Epichloë Endophyte and This Affects an Insect Herbivore.
Hennessy LM, Popay AJ, Finch SC, Clearwater MJ, Cave VM. Hennessy LM, et al. Front Plant Sci. 2016 Jul 29;7:1097. doi: 10.3389/fpls.2016.01097. eCollection 2016. Front Plant Sci. 2016. PMID: 27524991 Free PMC article.
Asexual Epichloë endophytes colonize agricultural forage grasses in a relationship which is mutually beneficial and provides the host plant with protection against herbivorous insects. ...Leaf and pseudostem material was then incorporated separately into semi-synthetic die …
Asexual Epichloë endophytes colonize agricultural forage grasses in a relationship which is mutually beneficial and provides the host …
Identification and Structure Elucidation of Janthitrems A and D from Penicillium janthinellum and Determination of the Tremorgenic and Anti-Insect Activity of Janthitrems A and B.
Babu JV, Popay AJ, Miles CO, Wilkins AL, di Menna ME, Finch SC. Babu JV, et al. Among authors: popay aj. J Agric Food Chem. 2018 Dec 19;66(50):13116-13125. doi: 10.1021/acs.jafc.8b04964. Epub 2018 Dec 7. J Agric Food Chem. 2018. PMID: 30482018
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