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ETR2 is an ETR1-like gene involved in ethylene signaling in Arabidopsis

Sakai, Hajime and Hua, Jian and Chen, Qianhong G. and Chang, Caren and Medrano, Leonard J. and Bleecker, Anthony B. and Meyerowitz, Elliot M. (1998) ETR2 is an ETR1-like gene involved in ethylene signaling in Arabidopsis. Proceedings of the National Academy of Sciences of the United States of America, 95 (10). pp. 5812-5817. ISSN 0027-8424. PMCID PMC20462. doi:10.1073/pnas.95.10.5812.

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The plant hormone ethylene regulates a variety of processes of growth and development. To identify components in the ethylene signal transduction pathway, we screened for ethylene-insensitive mutants in Arabidopsis thaliana and isolated a dominant etr2-1 mutant. The etr2-1 mutation confers ethylene insensitivity in several processes, including etiolated seedling elongation, leaf expansion, and leaf senescence. Double mutant analysis indicates that ETR2 acts upstream of CTR1, which codes for a Raf-related protein kinase. We cloned the ETR2 gene on the basis of its map position, and we found that it exhibits sequence homology to the ethylene receptor gene ETR1 and the ETR1-like ERS gene. ETR2 may thus encode a third ethylene receptor in Arabidopsis, transducing the hormonal signal through its “two-component” structure. Expression studies show that ETR2 is ubiquitously expressed and has a higher expression in some tissues, including inflorescence and floral meristems, petals, and ovules.

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URLURL TypeDescription CentralArticle
Meyerowitz, Elliot M.0000-0003-4798-5153
Additional Information:© 1998 The National Academy of Sciences. Contributed by Elliot M. Meyerowitz, March 2, 1998. The ethyl methanesulfonate-mutagenized M2 seeds were provided by I. Raskin (Rutgers University). We thank X. Chen, J. Fletcher, T. Ito, S. Jacobsen, P. Kumar, C. Ohno, K. Roberg, R. Sablowski, D. Wagner, E. Ziegelhoffer, and members of Bleecker laboratory for comments on this manuscript. This work was supported by U.S. Department of Energy Grants 88ER13873 to E.M.M. and 91ER20029 to A.B.B.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-88ER13873
Department of Energy (DOE)DE-FG03-91ER20029
Issue or Number:10
PubMed Central ID:PMC20462
Record Number:CaltechAUTHORS:20141126-100714526
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Official Citation:Sakai, H., Hua, J., Chen, Q. G., Chang, C., Medrano, L. J., Bleecker, A. B., & Meyerowitz, E. M. (1998). ETR2 is an ETR1-like gene involved in ethylene signaling in Arabidopsis. Proceedings of the National Academy of Sciences, 95(10), 5812-5817.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52174
Deposited On:26 Nov 2014 20:25
Last Modified:10 Nov 2021 19:22

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