Natural polymorphisms in C. elegans HECW-1 E3 ligase affect pathogen avoidance behaviour.
Natural polymorphisms in C. elegans HECW-1 E3 ligase affect pathogen avoidance behaviour.
复制标题
DOI:
10.1038/nature10643
复制
发表时间:
2011-11-16
期刊:
影响因子:
64.8
通讯作者:
Kim, Dennis H.
中科院分区:
文献类型:
--
作者:
Chang, Howard C.;Paek, Jennifer;Kim, Dennis H.
Heritable variation in behavioural traits generally has a complex genetic basis, and thus naturally occurring polymorphisms that influence behaviour have been defined in only rare instances. The isolation of wild strains of Caenorhabditis elegans has facilitated the study of natural genetic variation in this species and provided insights into its diverse microbial ecology. C. elegans responds to bacterial infection with conserved innate immune responses and, while lacking the immunological memory of vertebrate adaptive immunity, exhibits an aversive learning response to pathogenic bacteria. Here, we report the molecular characterization of naturally occurring coding polymorphisms in a C. elegans gene encoding a conserved HECT domain-containing E3 ubiquitin ligase, HECW-1. We show that two distinct polymorphisms in neighbouring residues of HECW-1 each affect C. elegans behavioural avoidance of a lawn of Pseudomonas aeruginosa. Neuron-specific rescue and ablation experiments, and genetic interaction analysis suggest that HECW-1 functions in a pair of sensory neurons to inhibit P. aeruginosa lawn avoidance behaviour through inhibition of the neuropeptide receptor NPR-1, which we have previously shown promotes P. aeruginosa lawn avoidance behaviour. Our data establish a molecular basis for natural variation in a C. elegans behaviour that may undergo adaptive changes in response to microbial pathogens.
登录
查看更多内容
影响因子:
9.8
作者:
Chang AJ;Chronis N;Karow DS;Marletta MA;Bargmann CI
通讯作者:
Bargmann CI
DOI:
10.1073/pnas.96.2.715
发表时间:
1999-01-19
影响因子:
11.1
作者:
Tan, MW;Mahajan-Miklos, S;Ausubel, FM
通讯作者:
Ausubel, FM
DOI:
10.1126/science.1166527
发表时间:
2009-01-16
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Reddy KC;Andersen EC;Kruglyak L;Kim DH
通讯作者:
Kim DH
影响因子:
2.7
作者:
Tsalik, EL;Niacaris, T;Hobert, O
通讯作者:
Hobert, O
影响因子:
64.8
作者:
Zhang, Y;Lu, H;Bargmann, CI
通讯作者:
Bargmann, CI