Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR18532874_1.fastq.gz | Fastqsanger.gz | |||
| SRR18532874_2.fastq.gz | Fastqsanger.gz | |||
| SRR18532875_1.fastq.gz | Fastqsanger.gz | |||
| SRR18532875_2.fastq.gz | Fastqsanger.gz | |||
| SRR18532876_1.fastq.gz | Fastqsanger.gz |
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Project description:Production of sterile fishes through artificial retention of a third set of chromosomes (triploidy) is a sustainable alternative for aquaculture since it reduces pressure on wild populations. However, these fishes have reduced survival in stressful conditions and in response to pathogens. In this study, the impact of Vibrio anguillarum infection on diploid and triploid Chinook salmon (Oncorhynchus tshawytscha) was investigated to identify if there was any significant regulation by microRNAs (miRNA) in immune responsive tissues. Small RNAs from hindgut, head kidney, and spleen were sequenced to determine miRNA transcript abundance was altered due to ploidy and infection in nine-month old full-sibling diploids and triploids. Diploids had higher percent survival at the end of the infection, but no difference was found in mortality between the two ploidies. All three tissues had differentially expressed miRNA prior to infection, indicating that subtle changes in epigenetic regulation due to increased ploidy. Additionally, miRNA were altered by infection, but only in spleen was there a difference in miRNA expression between diploids and triploids after three days of infection. Furthermore, one miRNA (ssa-miR-2188-3p) was confirmed as having an altered response to infection in triploids compared to diploids, implicating potential immune dysregulation due to increased ploidy. The miRNAs identified in this study are predicted to target immune pathways, providing evidence for their importance in regulating responses to pathogens. This study is the first to investigate how increased ploidy alters miRNA expression in response to infection. Additionally, it provides evidence for epigenetic dysregulation in triploid fishes, which may contribute to their poor performance in response to stress.
2023-08-28 | GSE230701 | GEO
Project description:In this study, 17 plants of tetraploid “Zhique” were firstly identified by screening 570 natural seedlings of Citrus wilsonii Tanaka. These tetraploid plants showed different morphology and exhibited significantly increased drought tolerance than the diploids via determination of leaf water potential, relative water content and electrolyte leakage. Large number of genes involved in photosynthesis-responsive were differentially expressed in tetraploids under drought stress by global transcriptome analysis, which was consistent with the detection of photosynthesis indicator including photosynthetic rate, stomatal conductance, chlorophyll and so on. Compared with diploids, phosphorylation modification also plays an important role in the tetraploids after drought stress through the transcriptional and protein level analysis. Additionally, the genes involved in the phenylpropanoid biosynthesis and starch and sucrose metabolism pathways were enriched in both tetraploids and diploids in response to water deficient. Importantly, tetraploids significantly take priority over the diploid via regulating plant hormone signal transduction, especially improving the levels of 3-indoleacetic acid, abscisic acid and salicylic acid and reducing gibberellic A3 and jasmonic acid contents. Collectively, our data reveals that synergistic regulation photosynthesis, phosphorylation modification and plant hormones accumulation contribute to drought tolerance of autotetraploid in Citrus wilsonii.
2022-06-09 | PXD031236 | Pride