Project description:EMS-mutagenized D. melanogaster populations with 4xbicoid were sequenced at the 1st, 3rd, 7th, 9th and 15th generation to analyze genomic changes during experimental evolution. Non-mutagenized populations were sequenced in parallel, representing standing variations.
Project description:The rdr6.1 missense allele was found by TILLING in EMS mutagenized plants of Medicago truncatula. To analyse the impact of this point mutation on small RNA populations, we sequenced small RNA from two sibling lines carrying the mutation and the corresponding wild-type plants.
Project description:To investigate the functions of TRANSPARENT TESTA 19 (TT19) on anthocyanin accumulation and stabilization using forward genetic screening approach. EMS mutagenized tt19 mutant to screen tt19 mutant suppressors that could restore the anthocyanin accumulation and the causative mutations were identified as point mutations in the RDR6/SGS3/DCL4 siRNA biogenesis pathway using whole genome re-sequencing. The idea for RNA-Seq and small RNA-Seq analysis is to illustrate the connection between siRNA biogenesis, TT19, and anthocyanin restoration. RNA's of 4 Arabidopsis lines (col-0, tt19 and two TT19 suppressors, all in triplicate) which were under AIC (3% sucrose shaking four days under 24h light) for four days was extracted. Small RNA libraries were prepared by BGI company and sequenced using BGISEQ-500 as 50SE.
Project description:NaCl-resistant Saccharomyces cerevisiae mutant was obtained by evolutionary engineering. EMS mutagenized culture was used as the initial population for the selection procedure. Gradually increasing levels of NaCl stress was applied through 40 successive batch cultivations. The reference strain could not grow even at 0.85 M NaCl whereas this mutant was shown to be resistant up to 1.45 M NaCl concentration. Whole-genome microarray analysis was used to identify the NaCl resistance mechanisms by comparing NaCl-resistant mutant strain and the reference strain in the absence of NaCl stress. The reference Saccharomyces cerevisiae strain and the NaCl-resistant mutant were grown in minimal medium to an Optical Density (OD600) of 1.00 which corresponds to the logarithmic growth phase of the yeast cells. Cultures were harvested and whole RNA isolation was carried out. The experiment was repeated three times.
Project description:NaCl-resistant Saccharomyces cerevisiae mutant was obtained by evolutionary engineering. EMS mutagenized culture was used as the initial population for the selection procedure. Gradually increasing levels of NaCl stress was applied through 40 successive batch cultivations. The reference strain could not grow even at 0.85 M NaCl whereas this mutant was shown to be resistant up to 1.45 M NaCl concentration. Whole-genome microarray analysis was used to identify the NaCl resistance mechanisms by comparing NaCl-resistant mutant strain and the reference strain in the absence of NaCl stress.
Project description:The rdr6.1 missense allele was found by TILLING in EMS mutagenized plants of Medicago truncatula. To analyse the impact of this point mutation on small RNA populations, we sequenced small RNA from two sibling lines carrying the mutation and the corresponding wild-type plants. libraries from two sibling lines carrying the rdr6.1 mutation and the corresponding wild-type plants
Project description:This experiment aims at analyzing crossover distribution in male and female meiosis, in the Arabidopsis pure Ler. Wild-type Ler seeds were subjected to EMS mutagenesis, and four independent M2 plants were crossed to produce two independent F1*, which were heterozygous for a set of EMS mutations. Then, the two F1* plants were reciprocally crossed to generate two F1 populations. Leaf samples from plants from the obtained F1 populations were used for DNA purification and library preparation for Illumina sequencing (HiSeq 3000 2x150 bp), performed by the Max Planck-Genome-centre Cologne, Germany (https://mpgc.mpipz.mpg.de/home/).
