PMID- 20173065 OWN - NLM STAT- MEDLINE DCOM- 20100615 LR - 20211020 IS - 1098-5336 (Electronic) IS - 0099-2240 (Print) IS - 0099-2240 (Linking) VI - 76 IP - 8 DP - 2010 Apr TI - Rickettsia symbionts cause parthenogenetic reproduction in the parasitoid wasp Pnigalio soemius (Hymenoptera: Eulophidae). PG - 2589-99 LID - 10.1128/AEM.03154-09 [doi] AB - Bacteria in the genus Rickettsia are intracellular symbionts of disparate groups of organisms. Some Rickettsia strains infect vertebrate animals and plants, where they cause diseases, but most strains are vertically inherited symbionts of invertebrates. In insects Rickettsia symbionts are known to have diverse effects on hosts ranging from influencing host fitness to manipulating reproduction. Here we provide evidence that a Rickettsia symbiont causes thelytokous parthenogenesis (in which mothers produce only daughters from unfertilized eggs) in a parasitoid wasp, Pnigalio soemius (Hymenoptera: Eulophidae). Feeding antibiotics to thelytokous female wasps resulted in production of progeny that were almost all males. Cloning and sequencing of a fragment of the 16S rRNA gene amplified with universal primers, diagnostic PCR screening of symbiont lineages associated with manipulation of reproduction, and fluorescence in situ hybridization (FISH) revealed that Rickettsia is always associated with thelytokous P. soemius and that no other bacteria that manipulate reproduction are present. Molecular analyses and FISH showed that Rickettsia is distributed in the reproductive tissues and is transovarially transmitted from mothers to offspring. Comparison of antibiotic-treated females and untreated females showed that infection had no cost. Phylogenetic analyses of 16S rRNA and gltA gene sequences placed the symbiont of P. soemius in the bellii group and indicated that there have been two separate origins of the parthenogenesis-inducing phenotype in the genus Rickettsia. A possible route for evolution of induction of parthenogenesis in the two distantly related Rickettsia lineages is discussed. FAU - Giorgini, M AU - Giorgini M AD - Istituto per la Protezione delle Piante, CNR, via Universita 133, Portici (NA), Italy 80055. giorgini@ipp.cnr.it FAU - Bernardo, U AU - Bernardo U FAU - Monti, M M AU - Monti MM FAU - Nappo, A G AU - Nappo AG FAU - Gebiola, M AU - Gebiola M LA - eng SI - GENBANK/EU881494 SI - GENBANK/EU881495 SI - GENBANK/EU881496 SI - GENBANK/EU881497 SI - GENBANK/EU881498 SI - GENBANK/EU881499 SI - GENBANK/EU881500 SI - GENBANK/EU881501 SI - GENBANK/EU881502 SI - GENBANK/EU881503 SI - GENBANK/EU881504 SI - GENBANK/EU881505 SI - GENBANK/EU881506 SI - GENBANK/EU881507 SI - GENBANK/EU881508 SI - GENBANK/GU121643 SI - GENBANK/GU121644 SI - GENBANK/GU121645 SI - GENBANK/GU121646 SI - GENBANK/GU121647 SI - GENBANK/GU121648 SI - GENBANK/GU121649 SI - GENBANK/GU121650 SI - GENBANK/GU121651 SI - GENBANK/GU121652 SI - GENBANK/GU121653 SI - GENBANK/GU121654 SI - GENBANK/GU121655 SI - GENBANK/GU121656 SI - GENBANK/GU121657 SI - GENBANK/GU121658 SI - GENBANK/GU121659 SI - GENBANK/GU121660 SI - GENBANK/GU121661 SI - GENBANK/GU121662 SI - GENBANK/GU121663 SI - GENBANK/GU121664 SI - GENBANK/GU121665 SI - GENBANK/GU121666 SI - GENBANK/GU121667 SI - GENBANK/GU121668 SI - GENBANK/GU121669 SI - GENBANK/GU559856 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100219 PL - United States TA - Appl Environ Microbiol JT - Applied and environmental microbiology JID - 7605801 RN - 0 (Anti-Bacterial Agents) RN - 0 (Bacterial Proteins) RN - 0 (DNA, Bacterial) RN - 0 (DNA, Ribosomal) RN - 0 (RNA, Ribosomal, 16S) SB - IM MH - Animals MH - Anti-Bacterial Agents/administration & dosage MH - Bacterial Proteins/genetics MH - Cluster Analysis MH - DNA, Bacterial/chemistry/genetics MH - DNA, Ribosomal/chemistry/genetics MH - Genitalia/microbiology MH - Hymenoptera/*microbiology/*physiology MH - In Situ Hybridization, Fluorescence MH - Molecular Sequence Data MH - *Parthenogenesis MH - Phylogeny MH - RNA, Ribosomal, 16S/genetics MH - Rickettsia/*physiology MH - Sequence Analysis, DNA MH - *Symbiosis PMC - PMC2849191 EDAT- 2010/02/23 06:00 MHDA- 2010/06/16 06:00 PMCR- 2010/10/01 CRDT- 2010/02/23 06:00 PHST- 2010/02/23 06:00 [entrez] PHST- 2010/02/23 06:00 [pubmed] PHST- 2010/06/16 06:00 [medline] PHST- 2010/10/01 00:00 [pmc-release] AID - AEM.03154-09 [pii] AID - 3154-09 [pii] AID - 10.1128/AEM.03154-09 [doi] PST - ppublish SO - Appl Environ Microbiol. 2010 Apr;76(8):2589-99. doi: 10.1128/AEM.03154-09. Epub 2010 Feb 19.