Full TGIF Record # 106269
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Publication Type:
i
Report
Author(s):Scott, Barry
Author Affiliation:Centre for Functional Genomics, Institute of Molecular BioSciences, Massey University, Palmerston North, New Zealand
Title:Functional analysis of the perennial ryegrass - Epichlo√ę endophyte interaction
Section:Genomics of plant-symbiont relations
Other records with the "Genomics of plant-symbiont relations" Section
Meeting Info.:Third International Symposium, Molecular Breeding of Forage and Turf, Dallas, Texas and Ardmore, Oklahoma, May 18-22, 2003
Source:Molecular Breeding of Forage and Turf: Proceedings of the 3rd International Symposium, Molecular Breeding of Forage and Turf. 2004, p. 133-144.
# of Pages:12
Publishing Information:Dordrecht: Kluwer Academic Publishers
Series:Developments in Plant Breeding Volume 11
Keywords:TIC Keywords: Lolium perenne; Epichloe; Endophytes; Fungi; Alkaloids; Biosynthesis; Symbiosis; Analysis; Metabolites; Vitamins
Abstract/Contents:"Epichlo√ę/Neotyphodium endophytes are a group of clavicipitaceous fungi that form symbiotic associations (symbiota) with temperate grasses such as perennial ryegrass and tall fescue. The fungus derives nutrients from the host and a means of dissemination through the seed. The plant acquires increased tolerance to biotic and abiotic stresses such as herbivory and water insufficiency. Fungal synthesis of anti-insect and anti-mammalian secondary metabolites appears to be the mechanism for protection of the symbiotum from herbivory. Genes for the biosynthesis of lolines, ergot alkaloids and indole-diterpenes have recently been cloned from Epichlo√ę/Neotyphodium endophytes and shown to be organised in gene clusters. In most cases these genes are not expressed in axenic culture but are highly up-regulated in the grass host. A molecular analysis of the regulation of these genes will provide fundamental insights into the molecular interaction between grass host and symbiont. Interaction between host and symbiont also involves exchange of primary metabolites. A gene for vitamin B1 biosynthesis has been deleted in E.typhina to examine the effect of this change on fungal compatibility with the host. Vitamin B1 auxotrophs were as effective as wild-type in both host colonisation and stromata formation."
ISBN:1-4020-1867-3
Language:English
References:47
Note:Figures
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
2004. Functional analysis of the perennial ryegrass - Epichlo√ę endophyte interaction. Molecular Breeding of Forage and Turf: Proceedings of the 3rd International Symposium, Molecular Breeding of Forage and Turf. p. 133-144.
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