10.5061/DRYAD.D6N271PV
Gundel, Pedro E.
University of Buenos Aires
Martínez-Ghersa, María A.
University of Buenos Aires
Omacini, Marina
University of Buenos Aires
Cuyeu, Romina
National Agricultural Technology Institute
Pagano, Elba
National Agricultural Technology Institute
Ríos, Raúl
National Agricultural Technology Institute
Ghersa, Claudio M.
University of Buenos Aires
Data from: Mutualism effectiveness and vertical transmission of symbiotic
fungal endophytes in response to host genetic background
Dryad
dataset
2012
Lolium multiflorum Lam.
Neotyphodium occultans
Coevolution
2012-03-12T18:22:36Z
2012-03-12T18:22:36Z
en
https://doi.org/10.1111/j.1752-4571.2012.00261.x
30613 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Certain species of the Pooideae subfamily develop stress tolerance and
herbivory resistance through symbiosis with vertically-transmitted,
asexual fungi. This symbiosis is specific, and genetic factors modulate
compatibility between partners. Although gene flow is clearly a fitness
trait in allogamous grasses, since it injects hybrid vigor and raw
material for evolution, it could reduce compatibility and thus, mutualism
effectiveness. To explore the importance of host genetic background in
modulating the performance of symbiosis, Lolium multiflorum plants,
infected and non-infected with Neotyphodium occultans, were crossed with
genetically distant plants of isolines (susceptible and resistant to
diclofop-methyl herbicide) bred from two cultivars, and exposed to stress.
The endophyte improved seedling survival in genotypes susceptible to
herbicide, while it had a negative effect on one of the genetically
resistant crosses. Mutualism provided resistance to herbivory
independently of the host genotype, but this effect vanished under stress.
While no endophyte effect was observed on host reproductive success, it
was increased by inter-population plant crosses. Neither gene flow nor
herbicide had an important impact on endophyte transmission. Host fitness
improvements due to gene flow do not appear to result in direct conflict
with mutualism while this seems to be an important mechanism for the
ecological and contemporary evolution of the symbiotum.
Archiving dataEach sheet of the Excel file contains each measured variable
(survival to herbicide, aphid herbivory, plant yield and endophyte
transmission) in the two experiments. The logic is easy to understand
since the nomenclature is the same used in the article.
Argentina
Ciudad de Buenos Aires