C. elegans interprets bacterial non-coding RNAs to learn pathogenic avoidance.
C. elegans interprets bacterial non-coding RNAs to learn pathogenic avoidance.
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DOI:
10.1038/s41586-020-2699-5
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发表时间:
2020-10
期刊:
影响因子:
64.8
通讯作者:
Murphy CT
中科院分区:
文献类型:
--
作者:
Kaletsky R;Moore RS;Vrla GD;Parsons LR;Gitai Z;Murphy CT
C. elegans must distinguish pathogenic from nutritious bacterial food sources among the many bacteria it is exposed to in its environment. Here we show that a single exposure to purified small RNAs isolated from pathogenic Pseudomonas aeruginosa (PA14) is sufficient to induce pathogen avoidance, both in the treated animals and in four subsequent generations of progeny. The RNA interference and piRNA pathways, the germline, and the ASI neuron are required for bacterial small RNA-induced avoidance behavior and transgenerational inheritance. A single P. aeruginosa non-coding RNA, P11, is both necessary and sufficient to convey learned avoidance of PA14, and its C. elegans target, maco-1, is required for avoidance. Our results suggest that this ncRNA-dependent mechanism evolved to survey the worm’s microbial environment, use this information to make appropriate behavioral decisions, and pass this information on to its progeny.
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