Genetic structure of natural populations of the grass endophyte Epichloë festucae in semiarid grasslands

Molecular Ecology
R Arroyo GarcíaIñigo Zabalgogeazcoa

Abstract

Plants of red fescue (Festuca rubra), a commercially important turf grass, are infected by the fungal endophyte Epichloë festucae in semiarid natural grasslands, known as dehesas, in western Spain. We used amplified fragment length polymorphism (AFLP) markers to analyse the genetic polymorphism existing in two natural populations of Epichloë festucae. Linkage disequilibrium and the presence of clonal lineages indicated that nonrecombinant asexual reproduction predominates in both populations. However, most genetic variation detected was found to occur within populations, with only a moderate amount of genetic differentiation between populations (F(ST): 0.197). Overall, the study suggests that dehesa grasslands are useful reservoirs of Epichloë festucae endophytes, and provides information on population structure which is relevant to design sampling strategies.

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Citations

May 1, 2009·Plant Physiology·Dong-Xiu ZhangChristopher L Schardl
Sep 21, 2004·Annual Review of Plant Biology·Christopher L SchardlMartin J Spiering
Jun 10, 2011·Virology Journal·Cristina PetiscoAntonia Garcia-Ciudad
Mar 3, 2012·Yi chuan = Hereditas·Wen Zhu, Jia-Sui Zhan
Aug 19, 2008·The American Naturalist·Keith Clay, Christopher Schardl
Nov 4, 2006·Virus Research·María RomoIñigo Zabalgogeazcoa
Jul 16, 2013·Pest Management Science·Thomas A Miller
Nov 6, 2010·Plant Signaling & Behavior·Dong-Xiu ZhangChristopher L Schardl
Dec 21, 2021·Frontiers in Microbiology·Maria von CräutleinKari Saikkonen

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