Description
lov-1 and pkd-2, which encode the C. elegans orthologs of human polycystin-1 and -2, are necessary for three particular aspects of male mating behavior. In a screen for male mating defective mutants with similar spectrum of mating defects, we identified a mutation that apparently defines a new locus, lov-3.
We isolated the sy682 mutation in an ethyl-methane sulphonate (EMS)-screen of Caenorhabditis elegans strain PS1395 [genotype: plg-1(e2001d); him-5(e1490)] for mutant males that do not mate efficiently and hence do not form plugs on hermaphrodites (Liu et al, 2017). sy682 is defective in the males’ response to contact with hermaphrodite and in vulval location (Table 1). The vulval location defect is failing to stop at the vulva. These two phenotypes are associated with lov-1 (Barr, 1999) and pkd-2 loss-of-function mutations (Barr et al. 2001; Whittaker et al., 2017). sy682 maps to the X chromosome and thus is distinct from lov-1 and pkd-2, so it defines a likely new locus, lov-3.
Genotype | Phenotype | |
response | vulval location | |
+/+ | 47/59 | 57/57 |
sy682/sy682 | 12/61 | 25/44 |
Table 1. Phenotypic analysis of sy682 mutation. Response, response to contact with hermaphrodite; proportion of males that responded to initial contact with a hermaphrodite. Vulval location, the proportion of males that located the vulva on the first attempt. See Barr & Sternberg (1999) for details
Reagents
Strains:
PS4770: plg-1(e2001d)); him-5(e1490); sy682
PS6219: plg-1(e2001); him-5(e1490); sy682. sy682 backcrossed 1x
PS1395: plg-1(e2001d); him-5(e1490)
References
Funding
Howard Hughes Medical Institute, with whom PWS was an Investigator.
Reviewed By
Sreejiit RamakrishnanHistory
Received: October 17, 2017Accepted: November 6, 2017
Published: November 9, 2017
Copyright
© 2017 by the authors. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Citation
Whittaker, A; Schindelman, G; Gharib, S; Sternberg, PW (2017). A new mutation with a polycystin phenotypic spectrum in Caenorhabditis elegans. microPublication Biology. 10.17912/W2N37P.Download: RIS BibTeX