Abstract
Plant virus pathogenicity is expected to vary with changes in the abiotic environment that affect plant physiology. Conversely, viruses can alter the host plant response to additional stimuli from antagonism to mutualism depending on the virus, the host plant and the environment. Ecological theory, specifically the CSR framework of plant strategies developed by Grime and collaborators, states that plants cannot simultaneously optimize resistance to both water deficit and pathogens. Here, we investigated the vegetative and reproductive performance of 44 natural accessions of A. thaliana originating from the Iberian Peninsula upon simultaneous exposure to soil water deficit and viral infection by the Cauliflower mosaic virus (CaMV). Following the predictions of Grime's CSR theory, we tested the hypothesis that the ruderal character of a plant genotype is positively related to its tolerance to virus infection regardless of soil water availability. Our results showed that CaMV infection decreased plant vegetative performance and annihilated reproductive success of all accessions. In general, water deficit decreased plant performance, but, despite differences in behavior, ranking of accessions tolerance to CaMV was conserved under water deficit. Ruderality, quantified from leaf traits following a previously published procedure, varied significantly among accessions, and was positively correlated with tolerance to viral infection under both well-watered and water deficit conditions, although the latter to a lesser extent. Also, in accordance with the ruderal character of the accession and previous findings, our results suggest that accession tolerance to CaMV infection is positively correlated with early flowering. Finally, plant survival to CaMV infection increased under water deficit. The complex interactions between plant, virus and abiotic environment are discussed in terms of the variation in plant ecological strategies at the intraspecific level.
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Claims 8
Claim · model-written summary
CaMV infection decreased vegetative performance of Arabidopsis thaliana accessions.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Treatment
- CaMV infectione1
- Interactor
- CaMV
Cauliflower mosaic viruse1pathogen - Outcome
- plant vegetative performancee1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e1“Our results showed that CaMV infection decreased plant vegetative performance and annihilated reproductive success of all accessions”
Claim · model-written summary
CaMV infection annihilated reproductive success of all Arabidopsis thaliana accessions.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- CaMV infectione1
- Interactor
- CaMVCauliflower mosaic viruse1pathogen
- Outcome
- reproductive successe1
- Direction
- annihilatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e1“Our results showed that CaMV infection decreased plant vegetative performance and annihilated reproductive success of all accessions”
Claim · model-written summary
Water deficit decreased plant performance of Arabidopsis thaliana accessions.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- water deficite2
- Outcome
- plant performancee2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e2“In general, water deficit decreased plant performance”
Claim · model-written summary
The ranking of accessions for tolerance to CaMV was conserved under water deficit.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- water deficite3
- Outcome
- ranking of accessions tolerance to CaMVe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e3“ranking of accessions tolerance to CaMV was conserved under water deficit”
Claim · model-written summary
Ruderality varied significantly among Arabidopsis thaliana accessions.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Outcome
- Ruderalitye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e4“Ruderality, quantified from leaf traits following a previously published procedure, varied significantly among accessions”
Claim · model-written summary
Ruderality was positively correlated with tolerance to viral infection under well-watered and water deficit conditions.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- well-watered and water deficit conditionse5
- Outcome
- tolerance to viral infectione5
- Direction
- positively correlatede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e5“was positively correlated with tolerance to viral infection under both well-watered and water deficit conditions”
Claim · model-written summary
Tolerance to CaMV infection is positively correlated with early flowering in Arabidopsis thaliana accessions.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Organ / stage
- early floweringe6
- Outcome
- tolerance to CaMV infectione6
- Direction
- positively correlatede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e6“our results suggest that accession tolerance to CaMV infection is positively correlated with early flowering”
Claim · model-written summary
Plant survival to CaMV infection increased under water deficit.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- water deficite7
- Outcome
- plant survival to CaMV infectione7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e7“plant survival to CaMV infection increased under water deficit”
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