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. 1991 Jul;128(3):549–561. doi: 10.1093/genetics/128.3.549

Genetic Interactions at the Fla10 Locus: Suppressors and Synthetic Phenotypes That Affect the Cell Cycle and Flagellar Function in Chlamydomonas Reinhardtii

F G Lux-III 1, S K Dutcher 1
PMCID: PMC1204529  PMID: 1874415

Abstract

Through the isolation of suppressors of temperature-sensitive flagellar assembly mutations at the FLA10 locus of Chlamydomonas reinhardtii, we have identified six other genes involved in flagellar assembly. Mutations at these suppressor loci, termed SUF1-SUF6, display allele specificity with respect to which fla10(-) mutant alleles they suppress. An additional mutation, apm1-122, which confers resistance to the plant herbicides amiprophos-methyl and oryzalin, was also found to interact with mutations at the FLA10 locus. The apm1-122 mutation in combination with three fla10(-) mutant alleles results in synthetic cold-sensitive cell division defects, and in combination with an additional pseudo-wild-type fla10(-) allele yields a synthetic temperature-sensitive flagellar motility phenotype. Based upon the genetic interactions of these loci, we propose that the FLA10 gene product interacts with multiple components of the flagellar apparatus and plays a role both in flagellar assembly and in the cell cycle.

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Selected References

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