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Genealogy-dependent variation in viability among self-incompatibility genotypes.

Publication ,  Journal Article
Uyenoyama, MK
Published in: Theoretical population biology
June 2003

Many hermaphroditic plants avoid self-fertilization by rejecting pollen that express genetically determined specificities in common with the pistil. The S-locus, comprising the determinants of pistil and pollen specificity, typically shows extremely high polymorphism, with dozens to hundreds of specificities maintained within species. This article explores a conjecture, motivated by empirical findings, that the expression of recessive deleterious factors at sites closely linked to the S-locus may cause greater declines in the viability of zygotes constituted from more closely related S-alleles. Diffusion approximation models incorporating variation in viability among S-locus genotypes and antagonistic interactions between a new specificity and its immediate parent specificity are constructed and analyzed. Results indicate that variation in viability tends to reduce the number of specificities maintained in a population at stochastic steady state, and that genealogy-based antagonism reduces the rate of bifurcation of S-allele lineages. These effects may account for some of the unusual features observed in empirical studies of S-allele genealogies.

Duke Scholars

Published In

Theoretical population biology

DOI

EISSN

1096-0325

ISSN

0040-5809

Publication Date

June 2003

Volume

63

Issue

4

Start / End Page

281 / 293

Related Subject Headings

  • Plants
  • Plant Physiological Phenomena
  • Models, Genetic
  • Genotype
  • Evolutionary Biology
  • Alleles
  • 4901 Applied mathematics
  • 3104 Evolutionary biology
  • 3103 Ecology
  • 0604 Genetics
 

Citation

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MLA
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Uyenoyama, M. K. (2003). Genealogy-dependent variation in viability among self-incompatibility genotypes. Theoretical Population Biology, 63(4), 281–293. https://doi.org/10.1016/s0040-5809(03)00020-0
Uyenoyama, Marcy K. “Genealogy-dependent variation in viability among self-incompatibility genotypes.Theoretical Population Biology 63, no. 4 (June 2003): 281–93. https://doi.org/10.1016/s0040-5809(03)00020-0.
Uyenoyama MK. Genealogy-dependent variation in viability among self-incompatibility genotypes. Theoretical population biology. 2003 Jun;63(4):281–93.
Uyenoyama, Marcy K. “Genealogy-dependent variation in viability among self-incompatibility genotypes.Theoretical Population Biology, vol. 63, no. 4, June 2003, pp. 281–93. Epmc, doi:10.1016/s0040-5809(03)00020-0.
Uyenoyama MK. Genealogy-dependent variation in viability among self-incompatibility genotypes. Theoretical population biology. 2003 Jun;63(4):281–293.
Journal cover image

Published In

Theoretical population biology

DOI

EISSN

1096-0325

ISSN

0040-5809

Publication Date

June 2003

Volume

63

Issue

4

Start / End Page

281 / 293

Related Subject Headings

  • Plants
  • Plant Physiological Phenomena
  • Models, Genetic
  • Genotype
  • Evolutionary Biology
  • Alleles
  • 4901 Applied mathematics
  • 3104 Evolutionary biology
  • 3103 Ecology
  • 0604 Genetics