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- Title
EIN2, a bifunctional transducer of ethylene and stress responses in Arabidopsis.
- Authors
Alonso, J M; Hirayama, T; Roman, G; Nourizadeh, S; Ecker, J R
- Abstract
Ethylene regulates plant growth, development, and responsiveness to a variety of stresses. Cloning of the Arabidopsis EIN2 gene identifies a central component of the ethylene signaling pathway. The amino-terminal integral membrane domain of EIN2 shows similarity to the disease-related Nramp family of metal-ion transporters. Expression of the EIN2 CEND is sufficient to constitutively activate ethylene responses and restores responsiveness to jasmonic acid and paraquat-induced oxygen radicals to mutant plants. EIN2 is thus recognized as a molecular link between previously distinct hormone response pathways. Plants may use a combinatorial mechanism for assessing various stresses by enlisting a common set of signaling molecules.
- Publication
Science (New York, N.Y.), 1999, Vol 284, Issue 5423, p2148
- ISSN
0036-8075
- Publication type
Journal Article
- DOI
10.1126/science.284.5423.2148