Phenotypic plasticity in the expression of self-incompatibility in Campanula rapunculoides

Vogler, Donna W.; Das, Chandreyee Manas; Stephenson, Andrew G.

doi:10.1046/j.1365-2540.1998.00417.x

Cited by 61 publications

(49 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, there was no indication of a break down in the SI system with flower age as has been the case e.g. in Campanula rapunculoides (Vogler et al, 1998) since the SCI of the late selfing plants was only slightly higher (0.052) than in the spontaneous and hand-selfing (early selfing) plants.…”

Section: Discussionmentioning

confidence: 81%

See 1 more Smart Citation

No inbreeding depression in an outcrossing alpine species: The breeding system of Campanula thyrsoides

Ægisdóttir

Jespersen

Kuss

et al. 2007

Flora - Morphology, Distribution, Functional Ecology of Plants

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 81%

“…It has been stated that some plants show variation and plasticity in SI as is the case in Campanula rapunuculoides, where self-fertility increases with flower age, i.e. delayed selfing (Richardson et al, 1990;Vogler et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

No inbreeding depression in an outcrossing alpine species: The breeding system of Campanula thyrsoides

Ægisdóttir

Jespersen

Kuss

et al. 2007

Flora - Morphology, Distribution, Functional Ecology of Plants

View full text Add to dashboard Cite

“…This phenomenon has been observed in many SI species, especially in wild populations, and is usually referred to as 'pseudo-self-compatibility' (PSC), since while individuals are able to produce a few seeds after self-pollination, the number of seeds produced is far lower than that produced following a compatible cross-pollination (Levin 1996;Stephenson et al 2000). PSC is a quantitative trait controlled by variable numbers of 'modifier loci' that modulate the strength of SI and which are unlinked to the S locus (Vogler et al 1998;Stephenson et al 2000;Vogler and Kalisz 2001).…”

Section: Mating Systemmentioning

confidence: 99%

“…Interestingly, regular exposure to salt is often a feature of many habitats of S. squalidus, particularly roadsides and to a lesser extent railway lines, suggesting that environmentally-induced PSC may also have contributed to the colonizing success of S. squalidus (Hiscock 2000b;Brennan et al 2005). Studies of mating system variation in natural populations of a wide range of outcrossing species, including S. squalidus, are now highlighting the fact that SI is not simply a qualitative trait (the S locus) because it can also be subject to variable levels of quantitative control through the action of modifiers (Vogler et al 1998;Stephenson et al 2000;Vogler and Kalisz 2001;Brennan et al 2005). Species like S. squalidus, with a high degree of quantitative control over SI will have greater reproductive flexibility during population disturbances or metapopulation dynamics and may therefore make better colonists or become invasive.…”

Section: Mating Systemmentioning

confidence: 99%

Recent hybrid origin and invasion of the British Isles by a self-incompatible species, Oxford ragwort (Senecio squalidus L., Asteraceae)

et al. 2008

View full text Add to dashboard Cite

Abbott, R. J., Brennan, A. C., James, J. K., Forbes, D. G., Hegarty, M. J., Hiscock, S. J. (2009). Recent hybrid origin and invasion of the British Isles by a self-incompatible species, Oxford ragwort (Senecio squalidus L., Asteraceae). Biological Invasions, 11(5), 1145-1158 IMPF: 03.07 RONO: 00Senecio squalidus is a diploid hybrid species which originated in the British Isles following the introduction of material collected from a hybrid zone on Mount Etna, Sicily, approximately 300 years ago. Introduced hybrid material was cultivated in the Oxford Botanic Garden and gave rise to the stabilized diploid hybrid species, which later spread throughout much of the UK and into some parts of Ireland. Unusually for an invasive species, S. squalidus has a strong system of sporophytic self-incompatibility (SSI) that may have become modified as a result of its recent hybrid origin and spread. First, S. squalidus contains relatively few S alleles (between 2 and 6 S alleles within individual UK populations) compared to other species with SSI (estimates average ~17 S alleles per population). This most probably reflects the population bottleneck experienced by introduced hybrid material. Second, dominance relationships among S. squalidus S alleles are more extensive than those reported in other species with SSI. Third, although pseudo-self-compatibility occurs sporadically in S. squalidus, it is not widespread, indicating that SSI is maintained in the species despite potential mate availability restrictions imposed by low numbers of S alleles. Surveys of other forms of genetic diversity in S. squalidus show that allozyme variation is reduced relative to that within the progenitor species, but Randomly Amplified Polymorphic DNA variation is relatively high. Both types of genetic variation show little or no pattern of isolation-by-distance between populations in keeping with the recent range expansion of the species. During its spread in the British Isles, S. squalidus has hybridized with the native self-compatible (SC) tetraploid species, S. vulgaris, which has led to the origin of three new SC hybrid taxa: a radiate form of S. vulgaris (var. hibernicus), a tetrapoid hybrid species (S. eboracensis) and an allohexaploid (S. cambrensis).Peer reviewe

show abstract

“…Individuals in natural populations of C. rapunculoides vary significantly in their strength of selfincompatibility (from strongly to weakly self-incompatible; Vogler et al 1998;Good-Avila and Stephenson 2002). This study was motivated by three previous results from our laboratory.…”

mentioning

confidence: 99%

Parental Effects in a Partially Self‐Incompatible HerbCampanula rapunculoidesL. (Campanulaceae): Influence of Variation in the Strength of Self‐Incompatibility on Seed Set and Progeny Performance

Good‐Avila

Stephenson

2003

The American Naturalist

View full text Add to dashboard Cite

We employ a full reciprocal diallel design between 10 parental plants that differed in their strength of self-incompatibility (SI; strong, intermediate, and weak) to examine parental effects on seed set and 10 components of fitness of progeny performance in Campanula rapunculoides. We perform ANOVAs to separate the influence of the strength of SI and the identity of the maternal and paternal parent on family performance. We calculate the phenotypic and genetic correlations between traits to determine potentially evolutionary constraints. Finally, we employ maximum likelihood methods to estimate the components of quantitative genetic variance, as defined by Cockerham and Weir in their BioModel c. Our most significant finding is that weak SI plants have high outcrossed seed set as maternal parents. We argue that direct or pleiotropic effects of modifiers of SI probably cause this. Second, we find that extranuclear interactions, as defined by the BioModel, have strong effects on seed set and several vegetative and flowering traits. These findings indicate that some maternal plants selectively provision seeds sired by specific paternal donors and that some of this variation appears to be associated with modifiers of the strength of SI. We find other sources of significant quantitative genetic variation for all of the traits we examine and discuss the possible role these play in the evolution of the reproductive system. Taken together, our findings show that variation in the strength of SI may influence levels of quantitative genetic variation that, in turn, can influence the reproductive success of individuals in C. rapunculoides

show abstract

Phenotypic plasticity in the expression of self-incompatibility in Campanula rapunculoides

Cited by 61 publications

References 34 publications

No inbreeding depression in an outcrossing alpine species: The breeding system of Campanula thyrsoides

No inbreeding depression in an outcrossing alpine species: The breeding system of Campanula thyrsoides

Recent hybrid origin and invasion of the British Isles by a self-incompatible species, Oxford ragwort (Senecio squalidus L., Asteraceae)

Parental Effects in a Partially Self‐Incompatible HerbCampanula rapunculoidesL. (Campanulaceae): Influence of Variation in the Strength of Self‐Incompatibility on Seed Set and Progeny Performance

Contact Info

Product

Resources

About