Association of zygotic piRNAs derived from paternal P elements with hybrid dysgenesis in Drosophila melanogaster
Abstract Background P-element transposition in the genome causes P-M hybrid dysgenesis in Drosophila melanogaster. Maternally deposited piRNAs suppress P-element transposition in the progeny, linking them to P-M phenotypes; however, the role of zygotic piRNAs derived from paternal P elements is poor...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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BMC
2018-02-01
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| Series: | Mobile DNA |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13100-018-0110-y |
| _version_ | 1818369049075122176 |
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| author | Keiko Tsuji Wakisaka Kenji Ichiyanagi Seiko Ohno Masanobu Itoh |
| author_facet | Keiko Tsuji Wakisaka Kenji Ichiyanagi Seiko Ohno Masanobu Itoh |
| author_sort | Keiko Tsuji Wakisaka |
| collection | DOAJ |
| description | Abstract Background P-element transposition in the genome causes P-M hybrid dysgenesis in Drosophila melanogaster. Maternally deposited piRNAs suppress P-element transposition in the progeny, linking them to P-M phenotypes; however, the role of zygotic piRNAs derived from paternal P elements is poorly understood. Results To elucidate the molecular basis of P-element suppression by zygotic factors, we investigated the genomic constitution and P-element piRNA production derived from fathers. As a result, we characterized males of naturally derived Q, M’ and P strains, which show different capacities for the P-element mobilizations introduced after hybridizations with M-strain females. The amounts of piRNAs produced in ovaries of F1 hybrids varied among the strains and were influenced by the characteristics of the piRNA clusters that harbored the P elements. Importantly, while both the Q- and M’-strain fathers restrict the P-element mobilization in ovaries of their daughters, the Q-strain fathers supported the production of the highest piRNA expression in the ovaries of their daughters, and the M’ strain carries KP elements in transcriptionally active regions directing the highest expression of KP elements in their daughters. Interestingly, the zygotic P-element piRNAs, but not the KP element mRNA, contributed to the variations in P transposition immunity in the granddaughters. Conclusions The piRNA-cluster-embedded P elements and the transcriptionally active KP elements from the paternal genome are both important suppressors of P element activities that are co-inherited by the progeny. Expression levels of the P-element piRNA and KP-element mRNA vary among F1 progeny due to the constitution of the paternal genome, and are involved in phenotypic variation in the subsequent generation. |
| first_indexed | 2024-12-13T23:17:39Z |
| format | Article |
| id | doaj.art-361dbe91c11e4e73824669cd60916be0 |
| institution | Directory Open Access Journal |
| issn | 1759-8753 |
| language | English |
| last_indexed | 2024-12-13T23:17:39Z |
| publishDate | 2018-02-01 |
| publisher | BMC |
| record_format | Article |
| series | Mobile DNA |
| spelling | doaj.art-361dbe91c11e4e73824669cd60916be02022-12-21T23:27:54ZengBMCMobile DNA1759-87532018-02-019111610.1186/s13100-018-0110-yAssociation of zygotic piRNAs derived from paternal P elements with hybrid dysgenesis in Drosophila melanogasterKeiko Tsuji Wakisaka0Kenji Ichiyanagi1Seiko Ohno2Masanobu Itoh3Department of Applied Biology, Kyoto Institute of TechnologyLaboratory of Genome and Epigenome Dynamics, Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya UniversityCenter for Epidemiologic Research in Asia, Shiga Univesity of Medical ScienceDepartment of Applied Biology, Kyoto Institute of TechnologyAbstract Background P-element transposition in the genome causes P-M hybrid dysgenesis in Drosophila melanogaster. Maternally deposited piRNAs suppress P-element transposition in the progeny, linking them to P-M phenotypes; however, the role of zygotic piRNAs derived from paternal P elements is poorly understood. Results To elucidate the molecular basis of P-element suppression by zygotic factors, we investigated the genomic constitution and P-element piRNA production derived from fathers. As a result, we characterized males of naturally derived Q, M’ and P strains, which show different capacities for the P-element mobilizations introduced after hybridizations with M-strain females. The amounts of piRNAs produced in ovaries of F1 hybrids varied among the strains and were influenced by the characteristics of the piRNA clusters that harbored the P elements. Importantly, while both the Q- and M’-strain fathers restrict the P-element mobilization in ovaries of their daughters, the Q-strain fathers supported the production of the highest piRNA expression in the ovaries of their daughters, and the M’ strain carries KP elements in transcriptionally active regions directing the highest expression of KP elements in their daughters. Interestingly, the zygotic P-element piRNAs, but not the KP element mRNA, contributed to the variations in P transposition immunity in the granddaughters. Conclusions The piRNA-cluster-embedded P elements and the transcriptionally active KP elements from the paternal genome are both important suppressors of P element activities that are co-inherited by the progeny. Expression levels of the P-element piRNA and KP-element mRNA vary among F1 progeny due to the constitution of the paternal genome, and are involved in phenotypic variation in the subsequent generation.http://link.springer.com/article/10.1186/s13100-018-0110-yZygotic piRNAsPaternal P elementspiRNA clusterHybrid dysgenesisNatural strains |
| spellingShingle | Keiko Tsuji Wakisaka Kenji Ichiyanagi Seiko Ohno Masanobu Itoh Association of zygotic piRNAs derived from paternal P elements with hybrid dysgenesis in Drosophila melanogaster Mobile DNA Zygotic piRNAs Paternal P elements piRNA cluster Hybrid dysgenesis Natural strains |
| title | Association of zygotic piRNAs derived from paternal P elements with hybrid dysgenesis in Drosophila melanogaster |
| title_full | Association of zygotic piRNAs derived from paternal P elements with hybrid dysgenesis in Drosophila melanogaster |
| title_fullStr | Association of zygotic piRNAs derived from paternal P elements with hybrid dysgenesis in Drosophila melanogaster |
| title_full_unstemmed | Association of zygotic piRNAs derived from paternal P elements with hybrid dysgenesis in Drosophila melanogaster |
| title_short | Association of zygotic piRNAs derived from paternal P elements with hybrid dysgenesis in Drosophila melanogaster |
| title_sort | association of zygotic pirnas derived from paternal p elements with hybrid dysgenesis in drosophila melanogaster |
| topic | Zygotic piRNAs Paternal P elements piRNA cluster Hybrid dysgenesis Natural strains |
| url | http://link.springer.com/article/10.1186/s13100-018-0110-y |
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