Identification of microsatellite loci in <i>Collinsia verna</i> (Veronicaceae)

Dunn, Jessica L.; Dierkes, Lindsay; Picó, F. Xavier; Kalisz, Susan

doi:10.1111/j.1471-8286.2006.01494.x

Cited by 2 publications

(3 citation statements)

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“…Selfing rate (s m ). We used polymorphic microsatellite markers developed for C. verna (Dunn et al, 2006) and C. sparsiflora (J. W. Wright et al, USDA, Forest Service Pacific Southwest Research Station, unpubl. res.)…”

Section: Data Collection and Analysesmentioning

confidence: 99%

“…Twelve to 20 maternal sibships, each with a minimum of seven seedlings, were used for each population/species. DNA from seedling tissue was extracted, and four to seven microsatellite markers were amplified and then scored using Genemapper TM software as described by Dunn et al (2006). For each population the sibship microsatellite genotypic data were analysed using the MLTR 2 .…”

Section: Data Collection and Analysesmentioning

confidence: 99%

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Dichogamy correlates with outcrossing rate and defines the selfing syndrome in the mixed-mating genus Collinsia

et al. 2011

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Collinsia species exhibit clear morphological and developmental traits diagnostic of 'selfing' or 'outcrossing' groups. However, many species in both the 'selfing' and the 'outcrossing' groups were MM, pointing to the critical influence of the pollination environment, the timing of AS and outcross pollen prepotency on s(m). Flower size is a poor predictor of Collinsia species' field selfing rates and this result may apply to many SC species. Assessment of the variation in the pollination environment, which can increase selfing rates in more 'outcrossing' species but can also decrease selfing rates in more 'selfing' species, is critical to understanding mating system evolution of SC MM taxa.

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Section: Data Collection and Analysesmentioning

confidence: 99%

Section: Data Collection and Analysesmentioning

confidence: 99%

Dichogamy correlates with outcrossing rate and defines the selfing syndrome in the mixed-mating genus Collinsia

et al. 2011

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“…Instead, we not only found similar SAD and composite flower size among populations, but when we analyzed petals independently, we found significantly larger upper and lower petals in populations BT and EF, the opposite of the predicted pattern for the selfing syndrome. Notably, the divergence in upper petal size (~5-6%) was relatively small compared to AS (~38-58%), but we also emphasize that the differences we report in AS are not likely due to random genetic processes given that our study populations are extremely large with high estimated levels of genetic polymorphism (Dunn et al, 2006;Knapczyk, 2007) and low levels of divergence among populations within this species in general, F ST = 0.09 (Knapczyk, 2007). Altogether, the disconnect between mating system and floral traits within C. verna suggest that they can evolve independently, supporting similar evidence from artificial selection studies in both Phlox (Bixby and Levin, 1996) and Mimulus (Bodbyl Roels and .…”

Section: An Evolutionary Response To Selection For Reproductive Assur...mentioning

confidence: 52%

How early does the selfing syndrome arise? Associations between selfing ability and flower size within populations of the mixed‐mater Collinsia verna

McElderry

Spigler

Vogler

et al. 2022

American J of Botany

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Premise: Widespread associations between selfing rate and floral size within and among taxa suggest that these traits may evolve in concert. Does this association develop immediately because of shared genetic and/or developmental control, or stepwise with selection shaping the evolution of one trait following the other? If the former, then association ought to appear within and across selfing populations. We explore this fundamental question in three populations of the mixed-mater Collinsia verna where autonomous selfing (AS) ability has been shown to be under selection by the pollination environment. Methods: We grew clonal replicates of C. verna in a controlled environment to characterize broad-sense genetic correlations among traits within populations and to assess whether divergence in mating system and floral traits among these populations is consistent with their previously observed selection pressures. Results: As predicted by their respective pollination environments, we demonstrate significant genetic divergence among populations in AS ability. However, patterns of divergence in floral traits (petal, stamen, and style size, stigmatic receptivity, and stigma-anther distance) were not as expected. Within populations, genetic variation in AS appeared largely independent from floral traits, except for a single weak negative association in one population between flower size and AS rate. Conclusions: Together, these results suggest that associations between selfing rate and floral traits across Collinsia species are not reflected at microevolutionary scales. If C. verna were to continue evolving toward the selfing syndrome, floral trait evolution would likely follow stepwise from mating system evolution.

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Identification of microsatellite loci in Collinsia verna (Veronicaceae)

Cited by 2 publications

References 20 publications

Dichogamy correlates with outcrossing rate and defines the selfing syndrome in the mixed-mating genus Collinsia

Dichogamy correlates with outcrossing rate and defines the selfing syndrome in the mixed-mating genus Collinsia

How early does the selfing syndrome arise? Associations between selfing ability and flower size within populations of the mixed‐mater Collinsia verna

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