PMID- 34706780 OWN - NLM STAT- MEDLINE DCOM- 20220114 LR - 20231102 IS - 1756-3305 (Electronic) IS - 1756-3305 (Linking) VI - 14 IP - 1 DP - 2021 Oct 27 TI - On the role of dauer in the adaptation of nematodes to a parasitic lifestyle. PG - 554 LID - 10.1186/s13071-021-04953-6 [doi] LID - 554 AB - Nematodes are presumably the most abundant Metazoa on Earth, and can even be found in some of the most hostile environments of our planet. Various types of hypobiosis evolved to adapt their life cycles to such harsh environmental conditions. The five most distal major clades of the phylum Nematoda (Clades 8-12), formerly referred to as the Secernentea, contain many economically relevant parasitic nematodes. In this group, a special type of hypobiosis, dauer, has evolved. The dauer signalling pathway, which culminates in the biosynthesis of dafachronic acid (DA), is intensively studied in the free-living nematode Caenorhabditis elegans, and it has been hypothesized that the dauer stage may have been a prerequisite for the evolution of a wide range of parasitic lifestyles among other nematode species. Biosynthesis of DA is not specific for hypobiosis, but if it results in exit of the hypobiotic state, it is one of the main criteria to define certain behaviour as dauer. Within Clades 9 and 10, the involvement of DA has been validated experimentally, and dauer is therefore generally accepted to occur in those clades. However, for other clades, such as Clade 12, this has hardly been explored. In this review, we provide clarity on the nomenclature associated with hypobiosis and dauer across different nematological subfields. We discuss evidence for dauer-like stages in Clades 8 to 12 and support this with a meta-analysis of available genomic data. Furthermore, we discuss indications for a simplified dauer signalling pathway in parasitic nematodes. Finally, we zoom in on the host cues that induce exit from the hypobiotic stage and introduce two hypotheses on how these signals might feed into the dauer signalling pathway for plant-parasitic nematodes. With this work, we contribute to the deeper understanding of the molecular mechanisms underlying hypobiosis in parasitic nematodes. Based on this, novel strategies for the control of parasitic nematodes can be developed. CI - (c) 2021. The Author(s). FAU - Vlaar, Lieke E AU - Vlaar LE AD - Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands. FAU - Bertran, Andre AU - Bertran A AD - Laboratory of Nematology, Department of Plant Sciences, Wageningen University, 6708 PB, Wageningen, The Netherlands. FAU - Rahimi, Mehran AU - Rahimi M AD - Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands. FAU - Dong, Lemeng AU - Dong L AD - Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands. FAU - Kammenga, Jan E AU - Kammenga JE AD - Laboratory of Nematology, Department of Plant Sciences, Wageningen University, 6708 PB, Wageningen, The Netherlands. FAU - Helder, Johannes AU - Helder J AD - Laboratory of Nematology, Department of Plant Sciences, Wageningen University, 6708 PB, Wageningen, The Netherlands. FAU - Goverse, Aska AU - Goverse A AD - Laboratory of Nematology, Department of Plant Sciences, Wageningen University, 6708 PB, Wageningen, The Netherlands. FAU - Bouwmeester, Harro J AU - Bouwmeester HJ AD - Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands. h.j.bouwmeester@uva.nl. LA - eng GR - CHEMCOMRHIZO, 670211/ERC_/European Research Council/International GR - 16873/NWO-TTW/ GR - NemHatch, 793795/H2020 Marie Sklodowska-Curie Actions/ PT - Journal Article PT - Review DEP - 20211027 PL - England TA - Parasit Vectors JT - Parasites & vectors JID - 101462774 RN - 0 (Cholestenes) RN - 0 (dafachronic acid) SB - IM MH - *Adaptation, Physiological MH - Animals MH - Caenorhabditis elegans/genetics/metabolism MH - Cholestenes/*metabolism MH - Gene Expression Regulation, Developmental MH - *Life Cycle Stages MH - Nematoda/classification/genetics/*growth & development/*physiology MH - *Signal Transduction PMC - PMC8555053 OTO - NOTNLM OT - Clade 12 OT - Dauer OT - Globodera OT - Parasitic nematodes OT - Quiescence COIS- The authors declare that they have no competing interests. EDAT- 2021/10/29 06:00 MHDA- 2022/01/15 06:00 PMCR- 2021/10/27 CRDT- 2021/10/28 05:35 PHST- 2021/04/19 00:00 [received] PHST- 2021/08/13 00:00 [accepted] PHST- 2021/10/28 05:35 [entrez] PHST- 2021/10/29 06:00 [pubmed] PHST- 2022/01/15 06:00 [medline] PHST- 2021/10/27 00:00 [pmc-release] AID - 10.1186/s13071-021-04953-6 [pii] AID - 4953 [pii] AID - 10.1186/s13071-021-04953-6 [doi] PST - epublish SO - Parasit Vectors. 2021 Oct 27;14(1):554. doi: 10.1186/s13071-021-04953-6.