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Pathogen infection and selection on fertilization success in Cucumis sativus

Kiboi, Samuel LU and Skogsmyr, Io LU (2006) In Sexual Plant Reproduction 19(1). p.1-6
Abstract
We investigated whether resistant pollen genotypes can be selected for when the maternal plants are infected and whether infection can result to changes in the pistil nutrient level influencing reproductive outcome. Both resistance and susceptibility come with costs that may affect pre- and post-fertilization reproductive functions. We performed the study by crossing zucchini yellow mosaic virus resistant and susceptible pollen (from a hybrid donor) to infected and healthy maternal plants. We also analysed the pistil nutrient content in both treatments and found an increase of the susceptible and not resistant genotypes when maternal plants were infected. The level of nutrients K, P and S was higher in the pistils of the infected maternal... (More)
We investigated whether resistant pollen genotypes can be selected for when the maternal plants are infected and whether infection can result to changes in the pistil nutrient level influencing reproductive outcome. Both resistance and susceptibility come with costs that may affect pre- and post-fertilization reproductive functions. We performed the study by crossing zucchini yellow mosaic virus resistant and susceptible pollen (from a hybrid donor) to infected and healthy maternal plants. We also analysed the pistil nutrient content in both treatments and found an increase of the susceptible and not resistant genotypes when maternal plants were infected. The level of nutrients K, P and S was higher in the pistils of the infected maternal plants than the healthy ones. Pistil nutrient level did not affect pollen tube growth rates, as indicated by seed siring patterns along the fruit. We propose that the effect on the siring ability of pollen carrying the susceptible and resistant alleles occurred at the post-fertilization stage, possibly as an indirect result of different growth rates of the two embryo genotypes under elevated nutrient conditions. We discuss our results with respect to possibilities of differential selection, costs and reproductive implications. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Sexual Plant Reproduction
volume
19
issue
1
pages
1 - 6
publisher
Springer
external identifiers
  • wos:000235738500001
  • scopus:33644695814
ISSN
0934-0882
DOI
10.1007/s00497-005-0014-0
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Plant Ecology and Systematics (Closed 2011) (011004000)
id
0ab6ec20-3f2f-4af1-967c-21e644393149 (old id 155222)
date added to LUP
2016-04-01 11:45:33
date last changed
2021-06-23 05:44:51
@article{0ab6ec20-3f2f-4af1-967c-21e644393149,
  abstract     = {We investigated whether resistant pollen genotypes can be selected for when the maternal plants are infected and whether infection can result to changes in the pistil nutrient level influencing reproductive outcome. Both resistance and susceptibility come with costs that may affect pre- and post-fertilization reproductive functions. We performed the study by crossing zucchini yellow mosaic virus resistant and susceptible pollen (from a hybrid donor) to infected and healthy maternal plants. We also analysed the pistil nutrient content in both treatments and found an increase of the susceptible and not resistant genotypes when maternal plants were infected. The level of nutrients K, P and S was higher in the pistils of the infected maternal plants than the healthy ones. Pistil nutrient level did not affect pollen tube growth rates, as indicated by seed siring patterns along the fruit. We propose that the effect on the siring ability of pollen carrying the susceptible and resistant alleles occurred at the post-fertilization stage, possibly as an indirect result of different growth rates of the two embryo genotypes under elevated nutrient conditions. We discuss our results with respect to possibilities of differential selection, costs and reproductive implications.},
  author       = {Kiboi, Samuel and Skogsmyr, Io},
  issn         = {0934-0882},
  language     = {eng},
  number       = {1},
  pages        = {1--6},
  publisher    = {Springer},
  series       = {Sexual Plant Reproduction},
  title        = {Pathogen infection and selection on fertilization success in Cucumis sativus},
  url          = {http://dx.doi.org/10.1007/s00497-005-0014-0},
  doi          = {10.1007/s00497-005-0014-0},
  volume       = {19},
  year         = {2006},
}