Project description:Plant hormones and small secretory peptides often function as environmental stress mediators. Some recent reports indicate that small secretory peptides, such as CLAVATA3/EMBRYO SURROUNDING REGION-RELATED (CLE), also function as mediators of environmental stimuli. CLE3 is induced in roots by defense elicitor treatment. Plants without functional CLE3 showed compromized defense gene responses in shoots when plant roots were treated with NaSA. Here, we identified specific genes downstream of CLE3 in roots and shoots with transformed Arabidopsis plants.
Project description:Plant hormones and small secretory peptides often function as environmental stress mediators. Some recent reports indicate that small secretory peptides, such as CLAVATA3/EMBRYO SURROUNDING REGION-RELATED (CLE), also function as mediators of environmental stimuli. CLE2 is induced in roots by light depriviation. Plants without functional CLE2 showed a chlorosis phenotype when grown under shade. Here, we identified specific genes downstream of CLE2 in roots and shoots with transformed Arabidopsis plants.
Project description:Regulation of genes in shoots and roots and Arabidopsis in response to Zn-deficiency in wild-type and hma2 hma4 mutants plants We used microarrays to determine co-regulated genes in the roots of Zn deficient wild-type plants with hma2 hma4 plants from control conditions. These co-regulated genes are candidates for regulation by a systemic signal
Project description:The Arabidopsis thaliana NAC domain transcription factor, VASCULAR-RELATED NAC-DOMAIN7 (VND7), acts as a master regulator for differentiation of xylem vessels. In order to identify a set of genes regulated by VND7, we carried out a microarray experiment with the Arabidopsis full-genome GeneChip array ATH1 (Affymetrix) for transgenic Arabidopsis roots overexpressing VND7. Experiment Overall Design: Total RNAs were isolated from roots of 5-day-old seedling of transgenic plants overexpressing YFP and VND7-YFP under control of Cauliflower mosaic virus 35S promoter. Three independent biological replicates were performed for each sample.
Project description:Identification of genes differentially expressed in roots of Arabidopsis Col-0 and ndr1-1 mutants 48 h post inoculation with the fungal pathogen Verticillium longisporum.
Project description:Identification of genes differentially expressed in roots of Arabidopsis Col-0 and ndr1-1 mutants 48 h post inoculation with the fungal pathogen Verticillium longisporum. Arabidopsis Col-0 and ndr1-1 seeds were grown in petri dishes with liquid MS medium supplemented with 0.2% sucrose. After two weeks on a horizontal shaker (40 rpm), plants were rinsed twice in sterile distilled water and transferred to liquid 0.5xMS medium without sucrose, supplemented with 200 conidia ml-1 of V. longisporum isolate VL1 (CBS110220). Control plants were grown in 0.5x MS only. At 48 hours post inoculation, materials were harvested in biological replicates (>50 plant roots) and immediately frozen in liquid nitrogen. RNA was extracted with Aurum Total RNA Mini Kit (Bio-Rad) and hybridized to the Arabidopsis ATH1 Genome Array at the DNAVision facility (Gosselies, Belgium). Microarray assays were performed with triplicate biological root samples. Normalization of the microarray data was performed using the Robust Multichip Average (RMA) method as implemented by the “quantile normalization” function in the Bioconductor 1.3 software.