Rust disease of eucalypts, caused by Puccinia psidii, did not originate via host jump from guava in Brazil

Rodrigo N Graça; Amy L Ross‐Davis; Ned B Klopfenstein; Mee‐Sook Kim; Tobin L Peever; Phil G Cannon; Cristina P Aun; Eduardo S. G Mizubuti; Acelino C Alfenas

doi:10.1111/mec.12545

Back

Rust disease of eucalypts, caused by Puccinia psidii, did not originate via host jump from guava in Brazil

Journal article

Open access

Peer reviewed

Rust disease of eucalypts, caused by Puccinia psidii, did not originate via host jump from guava in Brazil

Rodrigo N Graça, Amy L Ross‐Davis, Ned B Klopfenstein, Mee‐Sook Kim, Tobin L Peever, Phil G Cannon, Cristina P Aun, Eduardo S. G Mizubuti and Acelino C Alfenas

Molecular ecology, Vol.22(24), pp.6033-6047

12/2013

DOI: https://doi.org/10.1111/mec.12545

Handle:

https://hdl.handle.net/2376/103576

PMID: 24112757

Files and links (1)

url

https://doi.org/10.1111/mec.12545View

Published (Version of record) Open

Abstract

microsatellite

emerging disease

population structure

host jump

pathogen diversity

The rust fungus, Puccinia psidii, is a devastating pathogen of introduced eucalypts (Eucalyptus spp.) in Brazil where it was first observed in 1912. This pathogen is hypothesized to be endemic to South and Central America and to have first infected eucalypts via a host jump from native guava (Psidium guajava). Ten microsatellite markers were used to genotype 148 P. psidii samples from eucalypts and guava plus five additional myrtaceous hosts across a wide geographic range of south‐eastern Brazil and Uruguay. Principal coordinates analysis, a Bayesian clustering analysis and a minimum‐spanning network revealed two major genetic clusters among the sampled isolates, one associated with guava and another associated with eucalypts and three additional hosts. Multilocus genotypes infecting guava differed by multiple mutational steps at eight loci compared with those infecting eucalypts. Approximate Bayesian computation revealed that evolutionary scenarios involving a coalescence event between guava‐ and eucalypt‐associated pathogen populations within the past 1000 years are highly unlikely. None of the analyses supported the hypothesis that eucalypt‐infecting P. psidii in Brazil originated via host jump from guava following the introduction of eucalypts to Brazil approximately 185 years ago. The existence of host‐associated biotypes of P. psidii in Brazil indicates that this diversity must be considered when assessing the invasive threat posed by this pathogen to myrtaceous hosts worldwide.

Metrics

16 Record Views

See more details

Details

Title: Rust disease of eucalypts, caused by Puccinia psidii, did not originate via host jump from guava in Brazil
Creators: Rodrigo N Graça - Universidade Federal de Viçosa
Amy L Ross‐Davis - USDA Forest Service – Rocky Mountain Research Station
Ned B Klopfenstein - USDA Forest Service – Rocky Mountain Research Station
Mee‐Sook Kim - Kookmin University
Tobin L Peever - Washington State University
Phil G Cannon - USDA Forest Service – FHP
Cristina P Aun - Universidade Federal de Viçosa
Eduardo S. G Mizubuti - Universidade Federal de Viçosa
Acelino C Alfenas - Universidade Federal de Viçosa
Publication Details: Molecular ecology, Vol.22(24), pp.6033-6047
Academic Unit: Plant Pathology, Department of
Number of pages: 15
Grant note: Forest Woodland Ecosystems Program, Research Joint Venture Agreement (06‐JV‐11221662‐221; 07‐JV‐11221662‐285) USDA‐Forest Service, S&PF Forest Health Monitoring USDA‐Forest Service, State and Private Forestry, Forest Health Protection Region 5 Fundação de Amparo à Pesquisa do Estado de Minas Gerais Western Wildlands Environmental Threat Assessment Center USDA‐Forest Service‐RMRS Conselho Nactional de Desenvolvimento Científico e Tecnológico
Identifiers: 99900546504101842
Language: English
Resource Type: Journal article