AFLP analysis reveals a clonal population of Phytophthora pinifolia in Chile

Duran, Alvaro, Gryzenhout, Marieka, Drenth, Andre, Slippers, Bernard, Ahumada, Rodrigo, Wingfield, Brenda D. and Wingfield, Michael J. (2010) AFLP analysis reveals a clonal population of Phytophthora pinifolia in Chile. Fungal Biology, 114 9: 746-752.


Author Duran, Alvaro
Gryzenhout, Marieka
Drenth, Andre
Slippers, Bernard
Ahumada, Rodrigo
Wingfield, Brenda D.
Wingfield, Michael J.
Title AFLP analysis reveals a clonal population of Phytophthora pinifolia in Chile
Journal name Fungal Biology   Check publisher's open access policy
ISSN 1878-6146
Publication date 2010-09
Sub-type Article (original research)
DOI 10.1016/j.funbio.2010.06.008
Volume 114
Issue 9
Start page 746
End page 752
Total pages 7
Place of publication Oxford, England, U.K.
Publisher Elsevier
Collection year 2011
Language eng
Abstract Phytophthora pinifolia is the causal agent of the recently discovered needle disease of Pinus radiata in Chile, referred to as " Daño Foliar del Pino" (DFP). The genetic structure of the pathogen population is unknown, which hinders our understanding of its appearance and spread in Chile since 2004. In this study, a population of 88 cultures of P. pinifolia isolated from P. radiata at several localities in Chile was evaluated for genotypic diversity using amplified fragment length polymorphisms (AFLPs). Results of the AFLP analyses showed that the P. pinifolia population in Chile consists of two near identical genotypes but with no genetic differentiation based on geography, year of isolation or the part of the tree from which the isolates were obtained. Mating experiments did not lead to the production of gametangia suggesting that the organism is sterile. The fact that a single clonal genotype dominates the population of P. pinifolia in Chile supports the hypothesis that P. pinifolia was recently introduced into this country and that its impact is due to a new and susceptible host encounter. © 2010 The British Mycological Society.
Keyword Biological invasion
DFP
Oomycetes
Pine needle
Pinus radiata
SP-NOV.
South Africa
Pathogen
Infestans
Ramorum
Trees
Origin
Forest
Migrations
Cinnamomi
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Received 26 December 2009; revised 4 June 2010; accepted 30 June 2010. Corresponding Editor: Hermann Voglmayr. Available online 8 July 2010.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Biological Sciences Publications
 
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