Abstract
Nongenetic inheritance (e.g., transgenerational epigenetic effects) has received increasing interest in recent years, particularly in plants. However, most studies have involved a few model species and relatively little is known about wild species in these respects. We investigated transgenerational induced resistance to infection by the devastating oomycete Phytophthora infestans in Solanum physalifolium, a wild relative of cultivated potato. We treated plants with β-aminobutyric acid (BABA), a nontoxic compound acting as an inducing agent, or infected plants with P. infestans. BABA treatment reduced lesion size in detached-leaf assays inoculated by P. infestans in two of three tested genotypes, suggesting that resistance to oomycetes can be induced by BABA within a generation not only in crops or model species but also in wild species directly collected from nature. Both BABA treatment and infection in the parental generation reduced lesions in the subsequent generation in one of two genotypes, indicating a transgenerational influence on resistance that varies among genotypes. We did not detect treatment effects on seed traits, indicating the involvement of a mechanism unrelated to maternal effects. In conclusion, our study provides data on BABA induction and nongenetic inheritance of induced resistance in a wild relative of cultivated potato, implying that this factor might be important in the ecological and agricultural landscape.
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Claims 3
Claim · model-written summary
BABA treatment reduced lesion size from P. infestans in two of three tested genotypes.
- Taxon
- Solanum physalifolium
Solanum physalifoliume2 - Treatment
- BABA treatmente1
- Interactor
- P. infestans
Phytophthora infestanse1pathogen - Outcome
- lesion sizee1
- Direction
- reducede1
- Qualifier
- in two of three tested genotypese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“transgenerational induced resistance to infection by the devastating oomycete Phytophthora infestans in Solanum physalifolium”
e1“BABA treatment reduced lesion size in detached-leaf assays inoculated by P. infestans in two of three tested genotypes”
Claim · model-written summary
BABA treatment and parental infection reduced lesions in the subsequent generation in one of two genotypes.
- Taxon
- Solanum physalifoliumSolanum physalifoliume2
- Treatment
- BABA treatment and infection in the parental generatione1
- Outcome
- lesions in the subsequent generatione1
- Direction
- reducede1
- Qualifier
- in one of two genotypese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“transgenerational induced resistance to infection by the devastating oomycete Phytophthora infestans in Solanum physalifolium”
e1“Both BABA treatment and infection in the parental generation reduced lesions in the subsequent generation in one of two genotypes”
Claim · model-written summary
Treatments did not affect seed traits of Solanum physalifolium.
- Taxon
- Solanum physalifoliumSolanum physalifoliume2
- Outcome
- seed traitse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“transgenerational induced resistance to infection by the devastating oomycete Phytophthora infestans in Solanum physalifolium”
e1“We did not detect treatment effects on seed traits”