ABSTRACT: Transcription profiling by array of Arabidopsis mutant for arf19, arf2, axr3, iaa5, iaa6, iaa19, iaa17 or nph4 after treatment with indole-3-acetic acid
Project description:Transcriptional profiling of Arabidopsis thaliana seedlings treated with auxin (indole-3-acetic acid), highlighting to the physiological function of auxin by observing early response of gene expressions in Arabidopsis seedlings.
Project description:The root cap-specific conversion of the auxin precursor indole-3-butyric acid (IBA) into the main auxin indole-3-acetic acid (IAA) generates a local auxin source which subsequently modulates both the periodicity and intensity of auxin response oscillations in the root tip of Arabidopsis, and consequently fine-tunes the spatiotemporal patterning of lateral roots. To explore downstream components of this signaling process, we investigated the early transcriptional regulations happening in the root tip during IBA-to-IAA conversion in Col-0 and ibr1 ibr3 ibr10 triple mutant after 6 hours of IBA treatment.
Project description:Transcriptional profiling of Arabidopsis thaliana seedlings treated with auxin (indole-3-acetic acid), highlighting to the physiological function of auxin by observing early response of gene expressions in Arabidopsis seedlings. Two-condition experiment, auxin-treated seedlings vs. control seedlings. Biological replicates:2 control replicates, 2 auxin-treated.
Project description:To demonstrate the analysis of differential expression using CATMA v1 arrays, Arabidopsis seedlings were treated with indole-3-acetic acid at physiological concentrations. The seedlings were germinated in liquid medium, and treated with indole-3-acetic acid for 30, 120 or 240 minutes. Changes in expression patterns were monitored using a complete loop design including an untreated sample (0 minutes). Reciprocal labelling was used rendering a total of eight hybridisations. An additional self-to-self hybridisation for time-point 0 was included. The statistical analysis was based an ANOVA model and indicated that 1123 GSTs were differentially expressed (p < 2.37 x 10-6) in at least one of the three time points following treatment.
Project description:The root cap-specific conversion of the auxin precursor indole-3-butyric acid (IBA) into the main auxin indole-3-acetic acid (IAA) generates a local auxin source which subsequently modulates both the periodicity and intensity of auxin response oscillations in the root tip of Arabidopsis, and consequently fine-tunes the spatiotemporal patterning of lateral roots. To explore downstream components of this signaling process, we investigated the early transcriptional regulations happening in the root tip during IBA-to-IAA conversion in Col-0 and ibr1 ibr3 ibr10 triple mutant after 6 hours of IBA treatment. Arabidopsis thaliana (L). Heynh., Col-0 and ibr1ibr3ibr10 seeds were germinated vertically on solid medium derived from standard Murashige and Skoog (MS) medium. Three days after germination, Col-0 and ibr1ibr3ibr10 seedlings were transferred to a fresh MS medium supplemented with or without 10 ?M indole-3-buytric acid (IBA) for 6 hours. Then, root tip segments (~4mm) were dissected from the primary root and harvested for further RNA extraction. For each treatment, at least 120 individual Col-0 or ibr1ibr3ibr10 mutant root tip segments were sampled and three independent biological replicates were performed. Hormone and DMSO solution were filer-sterilized before being added to the medium.
Project description:21120 Arabidopsis thaliana gene sequence tags were amplified and purified using a novel bead-based strategy (see Publication for more details).This experiment was carried out to demonstrate the use of these arrays for expression profiling of Arabidopsis thaliana.Briefly, 10-day old Arabidopsis seedlings were treated for 30, 120 and 240 minutes with the plant hormone indole-3-acetic acid (auxin) and the effects on gene expression were analysed.
Project description:Above ground tissue of 10 day old Arabidopsis seedlings of Col wild-type, 35S-ARR7, arr7, 35S-ARR15 was treated with Cytokinin (benzyladenine), Auxin (indole-3-acetic acid) or both.