Transcription profiling of Arabidopsis Col-0, ein2-5 and ein5-1 ETHYLENE-INSENSITIVE5 encodes a 5 to 3 exoribonuclease required for posttranscriptional regulation

ABSTRACT: Ethylene is a gaseous plant growth regulator that controls a multitude of developmental and stress responses. Recently, the levels of Arabidopsis EIN3 protein, a key transcription factor mediating ethylene-regulated gene expression, have been demonstrated to increase in response to the presence of ethylene gas. Furthermore, in the absence ethylene, EIN3 is quickly degraded through a ubiquitin/proteasome pathway mediated by two F box proteins, EBF1 and EBF2 (1-3). Here, we report the identification of ETHYLENE INSENSITIVE5 as the 5’?3’ exoribonuclease XRN4. Specifically, we demonstrate that EIN5 is a component of the ethylene signal transduction cascade acting downstream of CTR1 that is required for ethylene-mediated gene expression changes. Furthermore, we find that the ethylene insens

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Joseph Ecker 

PROVIDER: E-GEOD-5174 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress