Abstract
Abstract Tall fescue ( Festuca arundinacea Schreb.) is a perennial C 3 grass species usually associated with the endophyte fungus Epichloë coenophiala that enhances tolerance to biotic and abiotic stresses. Given that the proportion of infected tall fescue plants in the grasslands of the Flooding Pampa (Argentina) has been progressively increasing, it is proposed that endophytes confer tolerance to the stresses characteristic of that environment, especially flooding. Plants from a naturalized population and a commercial cultivar were grown, both with and without endophyte (wild type and AR584 respectively). The plants were subjected to two submergence treatments (i.e., control and partial submergence) in two development stages (5‐leaf stage and beginning of the elongation of internodes). Plant performance (aerial and root biomass, root aerenchyma formation, total root length and root diameter, proportion of reproductive tillers, number of panicles and seeds produced) and endophyte transmission to progeny were evaluated. Endophytes did not alter the ecological fitness of plants under partial submergence. Independently of the water condition, the symbiosis was linked to low biomass in plants from the naturalized population, while the opposite occurred in plants from the cultivar. Partial submergence did not affect the germination of the seeds produced, nor the transmission of the endophyte to the seedlings that originated from them. Our work suggests that the invasion ability of tall fescue in the Flooding Pampa grasslands is not related to an endophyte‐mediated improvement of plants to tolerate water excess.
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Claims 5
Claim · model-written summary
Endophytes did not alter tall fescue ecological fitness under partial submergence.
- Taxon
- Tall fescue
Lolium arundinaceumt0 - Treatment
- endophyte‐infectedt0
- Outcome
- ecological fitness of plantse0
- Direction
- did not altere0
- Comparator
- endophyte‐freet0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Endophytes did not alter the ecological fitness of plants under partial submergence”
t0“endophyte‐infected and endophyte‐free tall fescue plants”
Claim · model-written summary
Endophyte symbiosis was linked to low biomass in the naturalized population regardless of water condition.
Verbatim
e0“Independently of the water condition, the symbiosis was linked to low biomass in plants from the naturalized population”
t0“endophyte‐infected and endophyte‐free tall fescue plants”
Claim · model-written summary
The cultivar showed the opposite biomass relationship with endophyte symbiosis.
- Taxon
- plantsViridiplantaee0
- Material
- cultivare0
- Interactor
- endophytet0symbiont
- Outcome
- oppositee0
Not reportedDirection
Verbatim
e0“while the opposite occurred in plants from the cultivar”
t0“endophyte‐infected and endophyte‐free tall fescue plants”
Claim · model-written summary
Partial submergence did not affect germination of produced seeds.
- Taxon
- tall fescueLolium arundinaceumt0
- Treatment
- Partial submergencee0
- Outcome
- germination of the seeds producede0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Partial submergence did not affect the germination of the seeds produced”
t0“tall fescue plants”
Claim · model-written summary
Partial submergence did not affect endophyte transmission to seedlings.
- Taxon
- tall fescueLolium arundinaceumt0
- Treatment
- Partial submergencee0
- Interactor
- endophytee0symbiont
- Outcome
- transmission of the endophyte to the seedlingse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Partial submergence did not affect the germination of the seeds produced, nor the transmission of the endophyte to the seedlings that originated from them”
t0“tall fescue plants”
The same questions in other papers
flooding · growth · Lolium arundinaceum (tall fescue)Results differ
4 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.