Glyphosate Resistance in Perennial Ryegrass (Lolium perenne L.) is Associated with a Fitness Penalty

The net selection effect of herbicides on herbicide-resistance traits in weeds is conditioned by the fitness benefits and costs associated with resistance alleles. Fitness costs play an important evolutionary role preventing the fixation of adaptive alleles and contributing to the maintenance of gen...

Descripción completa

Detalles Bibliográficos
Autores principales: Yanniccari, Marcos Ezequiel, Vila Aiub, Martín, Istilart, Carolina, Acciaresi, Horacio Abel, Castro, Ana María
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Agrarias
Fitness trait
genetic background
plant competition
resistance evolution
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86104
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86104
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Fitness trait
genetic background
plant competition
resistance evolution
spellingShingle Ciencias Agrarias
Fitness trait
genetic background
plant competition
resistance evolution
Yanniccari, Marcos Ezequiel
Vila Aiub, Martín
Istilart, Carolina
Acciaresi, Horacio Abel
Castro, Ana María
Glyphosate Resistance in Perennial Ryegrass (Lolium perenne L.) is Associated with a Fitness Penalty
topic_facet Ciencias Agrarias
Fitness trait
genetic background
plant competition
resistance evolution
description The net selection effect of herbicides on herbicide-resistance traits in weeds is conditioned by the fitness benefits and costs associated with resistance alleles. Fitness costs play an important evolutionary role preventing the fixation of adaptive alleles and contributing to the maintenance of genetic polymorphisms within populations. Glyphosate is widely used in world agriculture, which has led to the evolution of widespread glyphosate resistance in many weed species. The fitness of glyphosate-resistant and -susceptible perennial ryegrass plants selected from within a single population were studied in two field experiments conducted during 2011 and 2012 under different soil water availability. Glyphosate-resistant plants showed a reduction in height of 12 and 16%, leaf blade area of 16 and 33%, shoot biomass of 45 and 55%, seed number of 33 and 53%, and total seed mass of 16 and 5% compared to glyphosate-susceptible plants in 2011 and 2012, respectively. The reduction in seed number per plant resulted in a 40% fitness cost associated with the glyphosate-resistance trait in perennial ryegrass. Fitness costs of glyphosate-resistant plants were expressed under both conditions of water availability. These results could be useful for designing management strategies and exploiting the reduced glyphosate-resistant perennial ryegrass fitness in the absence of glyphosate selection.
format Articulo
Articulo
author Yanniccari, Marcos Ezequiel
Vila Aiub, Martín
Istilart, Carolina
Acciaresi, Horacio Abel
Castro, Ana María
author_facet Yanniccari, Marcos Ezequiel
Vila Aiub, Martín
Istilart, Carolina
Acciaresi, Horacio Abel
Castro, Ana María
author_sort Yanniccari, Marcos Ezequiel
title Glyphosate Resistance in Perennial Ryegrass (Lolium perenne L.) is Associated with a Fitness Penalty
title_short Glyphosate Resistance in Perennial Ryegrass (Lolium perenne L.) is Associated with a Fitness Penalty
title_full Glyphosate Resistance in Perennial Ryegrass (Lolium perenne L.) is Associated with a Fitness Penalty
title_fullStr Glyphosate Resistance in Perennial Ryegrass (Lolium perenne L.) is Associated with a Fitness Penalty
title_full_unstemmed Glyphosate Resistance in Perennial Ryegrass (Lolium perenne L.) is Associated with a Fitness Penalty
title_sort glyphosate resistance in perennial ryegrass (lolium perenne l.) is associated with a fitness penalty
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/86104
work_keys_str_mv AT yanniccarimarcosezequiel glyphosateresistanceinperennialryegrassloliumperennelisassociatedwithafitnesspenalty
AT vilaaiubmartin glyphosateresistanceinperennialryegrassloliumperennelisassociatedwithafitnesspenalty
AT istilartcarolina glyphosateresistanceinperennialryegrassloliumperennelisassociatedwithafitnesspenalty
AT acciaresihoracioabel glyphosateresistanceinperennialryegrassloliumperennelisassociatedwithafitnesspenalty
AT castroanamaria glyphosateresistanceinperennialryegrassloliumperennelisassociatedwithafitnesspenalty
bdutipo_str Repositorios
_version_ 1764820489295888386

Ejemplares similares