Project description:Saccharum spontaneum L., the main source of tolerance gene in sugarcane variety, is one of the most valuable germplasms for sugarcane breeding. In this study, 22 clones of S.spontaneum L. were selected from more than 690 collections in our preliminary experiment, and the cold tolerance of these clones were evaluated by physiological and biochemical indicators. Then 2 clones which were designated as lines 1027 and 3217,with contrasting cold tolerance ability were selected for further proteome analysis using DIA and PRM technology.
Project description:In this study, the resistant and susceptible monoclonal CIK cell lines were first established which would be the ponderable research models for the nosogenesis mechanism of the hemorrhagic disease. C1 (CIK cells), R2 (resistant cells) and S3 (susceptible cells) samples were carried out RNA-Seq, MeDIP-Seq and small RNA-Seq by the next-generation sequencing strategy, bioinformatics analysis as well as experimental verification. It was discovered that the aboriginality of CIK cells were gravitated to the susceptible trait. And the discrepancies between resistance and susceptibility against GCRV could primarily attribute to antioxidant activity, cell killing activity and cell proliferation regulation. Here we comprehensively present the profiling and characteristics of DNA methylation and microRNA in the resistant and susceptible CIK cells and proposed that high mCHH methylation distribution might be a characteristic modulator in C. idella. What’s more, a series of genes modulated by DNA methylation or microRNA were designated as potential biomarkers for the resistance breeding. This study laid the foundation and opened novel avenues for nosogenesis research on hemorragic disease of C. idella.
Project description:To identify novel aging-related miRNAs, we initially established a physiological aging mouse model (20-month old male C57BL/6 mouse), compared with 2-month old male C57BL/6 mouse. Then, the Agilent miRNA microarray was performed to profile miRNA expression levels in kidney from 20-month old male C57BL/6 mouse (designated as Aging) and 2-month old male C57BL/6 mouse (designated as Young).
Project description:Integrated breeding strategies are used to increase both the yield potential and stability of crops. Most of these approaches have a direct genetic basis. The utility of epigenetics in breeding to improve complex traits such as yield and stress tolerance is not clear. A better understanding of the status of the epigenome and its contribution to the agronomic performance would help in developing strategies to incorporate the epigenetic component of complex traits in breeding,Starting from isogenic canola lines, epilines were generated by selecting recursively during three generations for lines with a higher energy use efficiency and drought tolerance. These epilines were more energy use efficient, drought tolerant, high nitrogen use efficient, and higher yielding under suboptimal conditions. Moreover, these characteristics were transgenerational inheritable. Transcriptome comparison with a line selected for energy use efficiency only revealed common differentially expressed genes related to the onset of signaling events regulating stress tolerance. Genes related to salt, osmotic, abscisic acid and drought were specifically differentially expressed in the drought tolerant epilines. The status of the epigenome, scored as differential trimethylation of lysine 4 of histone 3, supports the energy use efficient and drought tolerant phenotype by facilitating transcription of the genes that are found to be differentially expressed.From these results it can be concluded that the epigenome can be shaped by selection to increase yield and stress tolerance. This acquired knowledge will support further development of strategies to incorporate epigenetics in breeding. To investigate the epigenetic effect on histone mark distribution of the EUE/PEG selection we performed ChIP-seq analyses. Native ChIP using an anti-H3K4me3 and no antibody (background control) was done on PEG1 and control plants.
