Project description:Arabidopsis ATH1 Genome Arrays were used to analyse changes in transcript abundance between Col-0 (wild-type) Arabidopsis seedlings and either single T-DNA insertional KO mutants of LETM1 (At3g59820)(T-DNA lines; SALK_067558C (letm1-1) and SALK_058471 (letm1-2)) or LETM2 (At1g65540) (T-DNA line; SALK_068877 (letm2-1)). Additionally, letm1 and letm2 knock out Arabidopsis lines were crossed to generate double mutants, however a double knock-out of these two genes results in an embryo lethal phenotype. Hemizygous plants were generated that were homozygous knock out for LETM1 and heterozygous knock out for LETM2, and visa versa, termed (letm1(-/-)LETM2(+/-) and (LETM1(+/-)letm2(-/-) respectively. Note that (letm1(-/-)LETM2(+/-) displays a mild developmental defective phenotype in the first 10-14 days of growth, while (LETM1(+/-)letm2(-/-) shows no phenotype. Microarray analysis was carried out on all three single homozygous knock out lines, and also on both combinations of the hemizygous mutation between the two genes, and compared with a wild-type Col-0 control to gain insight into global transcript abundance changes in these mutant lines. Arrays were performed in triplicate for each genotype, from RNA isolated from 3 independent pools of 5-10 Arabidopsis seedlings at 10 days old.
Project description:au07-13_sqe1 - sqe1 - Arabidopsis transcriptome microarray from wild type and mutant plants. - Arabidopsis microarray from Ler ecotype and the sqe-1 mutant. Keywords: gene knock out
Project description:RNA-sequencing performed on petals and inflorescence of Arabidopsis plants. The study provides insight into the role of the TCP5 transcription factor and its molecular mechanism underlying petal growth, using knock-out, overexpression and induction lines on which RNA-sequencing was performed.
Project description:au07-10_mpk - bb - Gain insight into the function of mpk genes by characterizing the transcriptional profile of the mpk5, mpk10 and mpk11 KO mutants in comparison with that of the Arabidopsis wt plants. - Transcriptomic analysis of the double mutant bak1-4 bkk1-1 to compare its gene expression profile with that of the single mutants atmekk1 and atmpk4 and elucidate their involvement in the brassinolide signalling. Keywords: gene knock out
Project description:The aim of the expression profiling was to define and to apply criteria that allow discrimination between the effects of heat stress (HS) and HSF-dependent gene expression in Arabidopsis. Therefore we determined and analyzed the expression profiles of wild type (WT) and homozygous hsf1--/hsf3-- double knock out mutant plants (abbreviated hsf1/3). Hsf1/3 plants are deficient in HSF1 and HSF3 activity and unable to induce the fast transient expression of mRNAs of a number of HS genes tested (Lohmann et al., 2004).<br> The effects of HS on gene expression were analyzed after one hour heat treatment (37C) of leaf tissue.
Project description:rs07-04_mips - atmips mutant/photoperiod - In Arabidopsis thaliana, how does MIPS knock out influence gene expression? In AtMIPS mutants how does photoperiod influence gene expression. - Wild type Colombia and MIPS mutant (Salk 023626) plants are grown in short days (8h light) during 27 days and then transfered in long days (16h light) during 4 days. J4JC correspond to 27+4=31 days plants in short days. Keywords: gene knock out