Project description:We used high-throughput sequencing to identify conserved and nonconserved miRNAs and other short RNAs in Paeonia ostii under control and copper stressed condition. 102 previously known plant miRNAs were identified and classified into 89 families according to their gene sequence identity. Some miRNAs were highly conserved in the plant kingdom suggesting that these miRNA play important and conserved roles. Combined our transcriptome sequencing data of Paeonia ostii under same conditions, 34 novel potential miRNAs were identified. The potential targets of the identified known and novel miRNAs were also predicted based on sequence homology search. Comparing the two libraries, it was observed that 12 conserved miRNAs and 18 novel miRNAs showed significantly changes in response to copper stress. Some of the new identified potential miRNAs might be involved in Paeonia ostii-specific regulating mechanisms under copper stress. These results provide a framework for further analysis of miRNAs and their role in regulating Paeonia ostii response to copper stress.
Project description:The study of paeoniaflorin biosynthesis in Paeonia lactiflora Pall.at a molecular level is scarce, and the regulatory network between small RNAs and mRNAs in paeoniaflorin biosynthesis has not been assessed. Here, we attempt to combine mRNA and miRNA expression data with degradome analysis to reveal the tissue-specific regulatory network of miRNAs and their targets in Paeonia, especially the complex network of paeoniaflorin biosynthesis.The results will advance our understanding of the miRNA-mediated molecular mechanisms of paeoniaflorin and monoterpenoids biosynthesis, and provide a valuable resource for further study on Paeonia.
Project description:Paeonia lactiflora restored skeletal muscle function and mass in cancer-bearing mice, through the downregulations of muscular NF-kB signalling and muscle-specific E3 ubiquitin ligases. This study provides experimental evidence that Paeonia lactiflora can be a plausible candidate for a therapeutic agent for cancer cachexia.
