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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Layers of Cryptic Genetic Variation Underlie a Yeast Complex Trait

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Author(s):
Lee, Jonathan T. [1] ; Coradini, V, Alessandro L. ; Shen, Amy [2] ; Ehrenreich, Ian M. [2]
Total Authors: 4
Affiliation:
[1] Univ Southern Calif, Dept Biol Sci, Mol & Computat Biol Sect, Los Angeles, CA 90089 - USA
[2] Coradini, Alessandro L., V, Univ Southern Calif, Dept Biol Sci, Mol & Computat Biol Sect, Los Angeles, CA 90089 - USA
Total Affiliations: 2
Document type: Journal article
Source: Genetics; v. 211, n. 4, p. 1469-1482, APR 2019.
Web of Science Citations: 2
Abstract

Cryptic genetic variation may be an important contributor to heritable traits, but its extent and regulation are not fully understood. Here, we investigate the cryptic genetic variation underlying a Saccharomyces cerevisiae colony phenotype that is typically suppressed in a cross of the laboratory strain BY4716 (BY) and a derivative of the clinical isolate 322134S (3S). To do this, we comprehensively dissect the trait's genetic basis in the BYx3S cross in the presence of three different genetic perturbations that enable its expression. This allows us to detect and compare the specific loci that interact with each perturbation to produce the trait. In total, we identify 21 loci, all but one of which interact with just a subset of the perturbations. Beyond impacting which loci contribute to the trait, the genetic perturbations also alter the extent of additivity, epistasis, and genotype-environment interaction among the detected loci. Additionally, we show that the single locus interacting with all three perturbations corresponds to the coding region of the cell surface gene . While nearly all of the other remaining loci influence transcription in cis or trans, the perturbations tend to interact with loci in different pathways and subpathways. Our work shows how layers of cryptic genetic variation can influence complex traits. Here, these layers mainly represent different regulatory inputs into the transcription of a single key gene. (AU)

FAPESP's process: 16/21176-8 - Identification of genes that modify the genotype-phenotype map in Saccharomyces cerevisiae.
Grantee:Alessandro Luis Venega Coradini
Support Opportunities: Scholarships abroad - Research Internship - Doctorate