Project description:ngs2018_10_ethylene-effect of ethylene rna-seq-what are the effects of ethylene on mRNA metabolism during germination-seeds were imbibed at 25°c in darkness ± C2H4 and RNA was extracted after 6, 16 and 24 h of imbibition
Project description:Flooded plants experience impaired gas diffusion underwater, leading to oxygen deprivation (hypoxia) stress. The volatile plant hormone ethylene is rapidly trapped in submerged plant cells and is instrumental for enhanced metabolic hypoxia acclimation. However, the precise mechanisms underpinning ethylene-enhanced hypoxia survival remain unclear. We studied the effect of ethylene pre-treatment on hypoxia survival of primary Arabidopsis thaliana root tips.
Project description:We report that CBP20 phosphorylation can regulate root growth in ethylene. We examined the small RNA expression in roots and shoots of wild type (Col) and cbp20 mutant (in Col background). Ethylene is one of the most essential hormones for plant developmental processes and stress responses. EIN2 is a key factor in ethylene signaling pathway and its function is regulated by phosphorylation. However, the phosphorylation regulation in the ethylene signaling pathway is largely unknown. Here we report the phosphorylation of CBP20 is regulated by ethylene, and the phosphorylation is involved in root elongation. The constitutive phosphorylation format of CBP20 rescues the cbp20 root ethylene hyposensitive phenotype, while the constitutive de-phosphorylation format of CBP20 is unable to rescue the root phenotype of cbp20 in response to ethylene. Genome wide study on ethylene regulated gene expression and microRNA expression in the roots and shoots of both Col and cbp20, together with the result of genetics validation suggest that ethylene induced phosphorylation of CBP20 is involved in root growth and one pathway is through the regulation of microRNAs and their target genes in roots.
Project description:Analysis of ethylene mutant (eto1-4) genome expression profile altered by ethylene antagonists. Results uncovered a significant number of genes that were co-regulated by the ethylene antagonists which may contribution on phenotype difference between WT and eto1-4. WT (Col-0) or ethylene mutant (eto1-4) were etiolated growth 3-day on 0.5x MS medium as control. Ethylene mutant (eto1-4) etiolated growth 3-day on 0.5x MS medium containing 10 μM different ethylene antagoinsts were used as experimental set. Whole seedling was used for total RNA extraction and cDNA synthesis. cDNA labeling, array hybridization, and scanning followed by standard Affymetrix expression array protocol. Two independent sets of microarray analyses were performed in this assay.
Project description:Analysis of ethylene mutant (eto1-4) genome expression profile altered by ethylene antagonists. Results uncovered a significant number of genes that were co-regulated by the ethylene antagonists which may contribution on phenotype difference between WT and eto1-4.
Project description:We report that CBP20 phosphorylation can regulate root growth in ethylene. We examined the gene expression in roots and shoots of wild type (Col) and cbp20 mutant (in Col background). Ethylene is one of the most essential hormones for plant developmental processes and stress responses. EIN2 is a key factor in ethylene signaling pathway and its function is regulated by phosphorylation. However, the phosphorylation regulation in the ethylene signaling pathway is largely unknown. Here we report the phosphorylation of CBP20 is regulated by ethylene, and the phosphorylation is involved in root elongation. The constitutive phosphorylation format of CBP20 rescues the cbp20 root ethylene hyposensitive phenotype, while the constitutive de-phosphorylation format of CBP20 is unable to rescue the root phenotype of cbp20 in response to ethylene. Genome wide study on ethylene regulated gene expression and microRNA expression in the roots and shoots of both Col and cbp20, together with the result of genetics validation suggest that ethylene induced phosphorylation of CBP20 is involved in root growth and one pathway is through the regulation of microRNAs and their target genes in roots.