Processing and Subcellular Trafficking of ER-Tethered EIN2 Control Response to Ethylene Gas

Author:

Qiao Hong1,Shen Zhouxin2,Huang Shao-shan Carol134,Schmitz Robert J.13,Urich Mark A.13,Briggs Steven P.2,Ecker Joseph R.134

Affiliation:

1. Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA.

2. Section of Cell and Developmental Biology, University of California, San Diego, La Jolla, CA 92093, USA.

3. Genomic Analysis Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA.

4. Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, CA 92037, USA.

Abstract

Cleave and Leave Plants produce ethylene gas, which acts as a hormone and is essential for the ripening of fruit, the resistance of plants to pathogens, the adaptation of plants to stress conditions, and stem cell maintenance. Although many components of the ethylene gas signaling pathway have been well studied, little is known about how the ethylene receptors located in the endoplasmic reticulum (ER) membrane can transmit the signal to the nucleus. Studying Arabidopsis , Qiao et al. (p. 390 , published online 30 August) found that perception of ethylene gas in the ER promotes signal transduction via cleavage and rapid ER-nucleus translocation of the cytosolic portion of the transmembrane ETHYLENE INSENSITIVE2 protein, which activates ethylene-dependent gene expression and other ethylene response phenotypes in plants.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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