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A galling insect activates plant reproductive programs during gall development

ABSTRACT: A galling insect activates plant reproductive programs during gall development

PROVIDER: PRJNA486136 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR7695750.fastq.gz	Fastqsanger.gz
	SRR7695760.fastq.gz	Fastqsanger.gz
	SRR7695751.fastq.gz	Fastqsanger.gz
	SRR7695761.fastq.gz	Fastqsanger.gz
	SRR7695742.fastq.gz	Fastqsanger.gz

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A galling insect activates plant reproductive programs during gall development

Project description:Some insects can redirect plant development to form unique organs called galls, which provide these insects with unique, enhanced food and protection from enemies and the elements. Many galls resemble flowers or fruits, suggesting that elements of reproductive development may be involved. We addressed this possibility using RNA sequencing (RNAseq) to quantify the transcriptional responses of wild grapevine (Vitis riparia Michx.) leaves to a galling parasite, phylloxera (Daktulosphaira vitifoliae (Fitch 1855)). If development of reproductive structures is part of gall formation, we expected to find significantly elevated expression of genes involved in flower and/or fruit development in developing galls as opposed to ungalled leaves. We found that reproductive gene ontology classes were significantly enriched in developing galls, and that expression of many putative genes involved in flower formation was significantly increased, particularly in later gall stages. The patterns of gene expression found in galls suggest that phylloxera exploits vascular cambium to provide meristematic tissue and redirects leaf development towards formation of carpels. The phylloxera leaf gall, and perhaps other similar galls, appears to be phenotypically and transcriptionally convergent on the plant carpel.

2018-08-16 | GSE118569 | GEO

A galling insect activates plant reproductive programs during gall development.

Project description:Many insect species have acquired the ability to redirect plant development to form unique organs called galls, which provide these insects with unique, enhanced food and protection from enemies and the elements. Many galls resemble flowers or fruits, suggesting that elements of reproductive development may be involved. We tested this hypothesis using RNA sequencing to quantify the transcriptional responses of wild grapevine (Vitis riparia) leaves to a galling parasite, phylloxera (Daktulosphaira vitifoliae). If development of reproductive structures is part of gall formation, we expected to find significantly elevated expression of genes involved in flower and/or fruit development in developing galls as opposed to ungalled leaves. We found that reproductive gene ontology categories were significantly enriched in developing galls, and that expression of many candidate genes involved in floral development were significantly increased, particularly in later gall stages. The patterns of gene expression found in galls suggest that phylloxera exploits vascular cambium to provide meristematic tissue and redirects leaf development towards formation of carpels. The phylloxera leaf gall appears to be phenotypically and transcriptionally similar to the carpel, due to the parasite hijacking underlying genetic machinery in the host plant.

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Gall aphid saliva LC-MS/MS - Proteins Identified from Saliva and Salivary Glands of the Chinese Gall Aphid Schlechtendalia chinensis

Project description:Aphid saliva plays an essential role in the interaction between aphids and their host plants. Several aphid salivary proteins have been identified and analyzed. However, none of the characterized salivary proteins are from galling aphids. Here we analyzed the salivary proteins from the Chinese gall aphid, Schlechtendalia chinensis using LS-MS/MS analysis. A total of 31 proteins were identified directly from secreted saliva collected via artificial diet, and 141 proteins were identified from protein extracts derived from dissected salivary glands. Among these identified proteins, 17 were found in both secreted saliva and dissected salivary glands. In comparison with salivary proteins identified from three other free living aphids, the most striking feature of the salivary protein from S. chinensis is the existence of high proportion of proteins with binding activity, including DNA binding, protein binding, ATP binding and ion binding proteins et al. We speculate that these binding proteins may be involved in induction of gall formation. Our results provide a framework for future research to elucidate the molecular basis for gall induction by S. chinensis.

2018-07-05 | PXD008928 | Pride

Gall aphid saliva LC-MS/MS - Proteins Identified from Saliva and Salivary Glands of the Chinese Gall Aphid Schlechtendalia chinensis

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Mating activates transcriptional programs and represses microRNAs in the Drosophila melanogaster female reproductive tract

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Transcription profiling of Solanum tuberosum normal and insect-induced gall tissue

Project description:Comparison of gene expression between Solidago inscet induced plant gall and normal Solidago plant tissue

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Mating activates transcriptional programs and represses microRNAs in the Drosophila melanogaster female reproductive tract [mRNA-seq]

Project description:Mating activates transcriptional programs and represses microRNAs in the Drosophila melanogaster female reproductive tract [mRNA-seq]

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Mating activates transcriptional programs and represses microRNAs in the Drosophila melanogaster female reproductive tract [miRNA-seq]

Project description:Mating activates transcriptional programs and represses microRNAs in the Drosophila melanogaster female reproductive tract [miRNA-seq]

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Mating activates transcriptional programs and represses microRNAs in the Drosophila melanogaster female reproductive tract [miRNA-seq]

Project description:The female’s reproductive tract is exposed directly to the male’s ejaculate, making it a hotspot for mating-induced responses shortly after mating. In Drosophila melanogaster, changes in the reproductive tract are essential to optimize fertilization. To detect the earliest gene regulatory events that underlie these changes, we measured transcript abundances using RNA-seq and microRNA-seq of reproductive tracts of unmated females and females collected within 10-15 minutes after the end of mating, either to a wildtype male or to a male with defective BMP signaling in secondary cells of the accessory gland, which influences the composition of the male’s ejaculate. We observed transcript abundance changes for genes with roles in tissue morphogenesis, wound healing, the immune response and metabolism. Strikingly, predicted targets of microRNAs that respond to mating are enriched for overlapping functions, suggesting that mating-induced changes are in part regulated by microRNAs. Most of the differentially expressed RNAs are upregulated in response to mating, while most of the differentially expressed microRNAs are downregulated. This pattern suggests a response of activation and de-repression of gene programs that switch the reproductive tract to a “mated” state, rather than a repression of virgin-specific programs. Male genotype did not influence transcript levels, indicating that the earliest transcriptomic responses in the reproductive tract are not dependent on ejaculate components that require BMP signaling in secondary cells. Our results shed light on the molecular changes that accompany very early responses to mating and present candidate genes and microRNAs that can be further examined for their participation in alterations of the reproductive tract microenvironment in response to signals from the male.

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Mating activates transcriptional programs and represses microRNAs in the Drosophila melanogaster female reproductive tract [mRNA-seq]

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