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- W3093135272 endingPage "7552" @default.
- W3093135272 startingPage "7552" @default.
- W3093135272 abstract "Organisms alter development in response to environmental cues. Recent studies demonstrate that they can transmit this plasticity to progeny. While the phenotypic and transcriptomic evidence for this “transgenerational plasticity” has accumulated, genetic and developmental mechanisms remain unclear. Plant defenses, gene expression and DNA methylation are modified as an outcome of parental wounding in Mimulus guttatus. Here, we sequenced M. guttatus small RNAs (sRNA) to test their possible role in mediating transgenerational plasticity. We sequenced sRNA populations of leaf-wounded and control plants at 1 h and 72 h after damage and from progeny of wounded and control parents. This allowed us to test three components of an a priori model of sRNA mediated transgenerational plasticity—(1) A subset of sRNAs will be differentially expressed in response to wounding, (2) these will be associated with previously identified differentially expressed genes and differentially methylated regions and (3) changes in sRNA abundance in wounded plants will be predictive of sRNA abundance, DNA methylation, and/or gene expression shifts in the following generation. Supporting (1) and (2), we found significantly different sRNA abundances in wounded leaves; the majority were associated with tRNA fragments (tRFs) rather than small-interfering RNAs (siRNA). However, siRNAs responding to leaf wounding point to Jasmonic Acid mediated responses in this system. We found that different sRNA classes were associated with regions of the genome previously found to be differentially expressed or methylated in progeny of wounded plants. Evidence for (3) was mixed. We found that non-dicer sRNAs with increased abundance in response to wounding tended to be nearby genes with decreased expression in the next generation. Counter to expectations, we did not find that siRNA responses to wounding were associated with gene expression or methylation changes in the next generation and within plant and transgenerational sRNA plasticity were negatively correlated." @default.
- W3093135272 created "2020-10-22" @default.
- W3093135272 creator A5023742432 @default.
- W3093135272 creator A5065560950 @default.
- W3093135272 creator A5091625941 @default.
- W3093135272 date "2020-10-13" @default.
- W3093135272 modified "2023-09-23" @default.
- W3093135272 title "Mimulus sRNAs Are Wound Responsive and Associated with Transgenerationally Plastic Genes but Rarely Both" @default.
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- W3093135272 doi "https://doi.org/10.3390/ijms21207552" @default.
- W3093135272 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7589798" @default.