Impact of endophyte inoculation on the morphological identity of cultivars of Lolium perenne (L) and Festuca arundinacea (Schreb.)

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dc.contributor.authorPatterson, John
dc.contributor.authorLafaillette, F.
dc.contributor.authorWoster, S.
dc.contributor.authorRoulund, N.
dc.contributor.authorCharrier, S.
dc.contributor.authorGilliland, T.J.
dc.date.accessioned2020-11-17T12:18:38Z
dc.date.available2020-11-17T12:18:38Z
dc.date.issued2020-05-07
dc.descriptionPublication history: Accepted - 9 April 2020; Published online - 5 May 2020en_US
dc.description.abstractGrass endophytes have been shown to confer enhanced environmental resilience to symbiont cultivars with reports of modified growth. If inoculating with an endophyte (E+) made an accession morphologically distinct from its registered endophyte free (E−) accession, there could be protection and ownership issues for testing authorities and breeders. This study investigated if, in official Plant Breeders Rights (PBR) field trials, the morphological characteristics of E+and E− accessions of perennial ryegrass and tall fescue cultivars were sufficiently modified to designate them as mutually distinct and also distinct from their definitive accessions (Def), held by the testing authorities. Testing perennial ryegrass on 17 characters at 2 sites generated 48,960 observations and for tall fescue on 9 characters at 1 site, 12,960 observations (each for 3 accessions of 4 cultivars × 60 plants × 2 growing cycles). Distinctness required a p < 0.01 difference in a single character from the combined over years analysis (COYD). A few significant differences were recorded between E− and E+accessions. Cultivar Carn E+ was smaller than Carn E− for Infloresence Length (p < 0.01) in both years but COYD analysis (p < 0.05) was insufficient to declare distinctiveness. Overall, the number of observed differences between E−/E+ accessions was less or similar to the number expected purely by chance. In contrast, comparisons between Def and E− or E+ accessions showed a number of significant differences that were substantially more numerous than expected by chance. These results showed no conclusive evidence of endophyte inclusion creating false PBR distinctions but unexpectedly, several E− and E+ accessions were distinguished from their official definitive stock.en_US
dc.description.sponsorshipThis study was jointly funded by the EU Community Plant Variety Office, Angers, France and Euroseeds, Brussels, Belgium.en_US
dc.identifierhttp://hdl.handle.net/20.500.12518/194
dc.identifier.citationPatterson, J. D., Lafaillette, F., Wöster, S., Roulund, N., Charrier, S. and Gilliland, T. J. (2020) ‘Impact of endophyte inoculation on the morphological identity of cultivars of Lolium perenne (L) and Festuca arundinacea (Schreb.)’, Scientific Reports. Springer Science and Business Media LLC, 10(1). doi: 10.1038/s41598-020-64474-7en_US
dc.identifier.issn2045-2322
dc.identifier.urihttps://doi.org/10.1038/s41598-020-64474-7
dc.language.isoenen_US
dc.publisherNature Researchen_US
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.en_US
dc.titleImpact of endophyte inoculation on the morphological identity of cultivars of Lolium perenne (L) and Festuca arundinacea (Schreb.)en_US
dc.typeArticleen_US
dcterms.dateAccepted2020-04-09
dcterms.dateSubmitted2019-10-31

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