%0 Journal Article %1 yang2017incomplete %A Yang, Jinliang %A Mezmouk, Sofiane %A Baumgarten, Andy %A Buckler, Edward S. %A Guill, Katherine E. %A McMullen, Michael D. %A Mumm, Rita H. %A Ross-Ibarra, Jeffrey %D 2017 %I Public Library of Science %J PLOS Genetics %K domestication dominance genetic_load maize %N 9 %P 1-21 %R 10.1371/journal.pgen.1007019 %T Incomplete dominance of deleterious alleles contributes substantially to trait variation and heterosis in maize %U https://doi.org/10.1371/journal.pgen.1007019 %V 13 %X Author summary A key long-term goal of biology is understanding the genetic basis of phenotypic variation. Although most new mutations are likely disadvantageous, their prevalence and importance in explaining patterns of phenotypic variation is controversial and not well understood. In this study we combine whole genome-sequencing and field evaluation of a maize mapping population to investigate the contribution of deleterious mutations to phenotype. We show that a priori prediction of deleterious alleles correlates well with effect sizes for grain yield and that variants predicted to be more damaging are on average more recessive. We develop a simple model allowing for variation in the heterozygous effects of deleterious mutations and demonstrate its improved ability to predict both phenotypes and hybrid vigor. Our results help reconcile alternative explanations for hybrid vigor and highlight the use of leveraging evolutionary history to facilitate breeding for crop improvement.

@article{yang2017incomplete, abstract = {Author summary A key long-term goal of biology is understanding the genetic basis of phenotypic variation. Although most new mutations are likely disadvantageous, their prevalence and importance in explaining patterns of phenotypic variation is controversial and not well understood. In this study we combine whole genome-sequencing and field evaluation of a maize mapping population to investigate the contribution of deleterious mutations to phenotype. We show that a priori prediction of deleterious alleles correlates well with effect sizes for grain yield and that variants predicted to be more damaging are on average more recessive. We develop a simple model allowing for variation in the heterozygous effects of deleterious mutations and demonstrate its improved ability to predict both phenotypes and hybrid vigor. Our results help reconcile alternative explanations for hybrid vigor and highlight the use of leveraging evolutionary history to facilitate breeding for crop improvement.}, added-at = {2017-10-02T06:06:54.000+0200}, author = {Yang, Jinliang and Mezmouk, Sofiane and Baumgarten, Andy and Buckler, Edward S. and Guill, Katherine E. and McMullen, Michael D. and Mumm, Rita H. and Ross-Ibarra, Jeffrey}, biburl = {https://www.bibsonomy.org/bibtex/24774874869db63c33daf84b57ec77955/peter.ralph}, doi = {10.1371/journal.pgen.1007019}, interhash = {784c75d9a5882d27a2b6561bd918fd1a}, intrahash = {4774874869db63c33daf84b57ec77955}, journal = {PLOS Genetics}, keywords = {domestication dominance genetic_load maize}, month = {09}, number = 9, pages = {1-21}, publisher = {Public Library of Science}, timestamp = {2017-10-02T06:06:54.000+0200}, title = {Incomplete dominance of deleterious alleles contributes substantially to trait variation and heterosis in maize}, url = {https://doi.org/10.1371/journal.pgen.1007019}, volume = 13, year = 2017 }