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FEBS Lett. 2014 Sep 17;588(18):3347-51. doi: 10.1016/j.febslet.2014.07.023. Epub 2014 Jul 24.

Systematic comparison of bacterial feeding strains for increased yield of Caenorhabditis elegans males by RNA interference-induced non-disjunction.

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Department of Molecular Biosciences, The University of Kansas, Lawrence, KS 66045, USA.


Rare Caenorhabditis elegans males arise when sex chromosome non-disjunction occurs during meiosis in self-fertilizing hermaphrodites. Non-disjunction is a relatively rare event, and males are typically observed at a frequency of less than one in five hundred wild-type animals. Males are required for genetic crosses and phenotypic analysis, yet current methods to generate large numbers of males can be cumbersome. Here, we identify RNAi reagents (dsRNA-expressing bacteria) with improved effectiveness for eliciting males. Specifically, we used RNAi to systematically reduce the expression of over two hundred genes with meiotic chromosome segregation functions, and we identified a set of RNAi reagents that robustly and reproducibly elicited male progeny.


Caenorhabditis elegans males; Him phenotype; Kinesin-like protein; Non-disjunction; RNAi; dsRNA

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