The phytohormone ethylene plays a central role in physiological and developmental processes, such as germination, growth, flower initiation, senescence of leaves and flowers, organ abscission, and fruit ripening (Abeles et al., 1992). It is also a major signal, mediating responses to a range of biotic and abiotic stresses. At the level of gene expression, ethylene has been shown to induce transcription of a wide range of genes involved in wound signalling and defense against pathogens. A family of five receptors mediates ethylene perception in Arabidopsis: ETR1, ERS1, ETR2, ERS2, and EIN4 (Hua and Meyerowitz, 1998; Sakai et al., 1998). The ETR1 receptor is a homodimer localized in the endoplasmic reticulum membrane (Chen et al., 2002).
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Bustamante, J., Poncet, V., Campa, C., Noirot, M., Hamon, S., Kochko, A.d. (2007). Characterization of three ethylene receptor genes in Coffea canephora Pierre. In: Ramina, A., Chang, C., Giovannoni, J., Klee, H., Perata, P., Woltering, E. (eds) Advances in Plant Ethylene Research. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6014-4_13
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