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Nat Biotechnol. 1997 May;15(5):444-7.

A dominant mutant receptor from Arabidopsis confers ethylene insensitivity in heterologous plants.

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Ceregen Technology, Monsanto Company, Chesterfield, MO 63198, USA.


Ethylene (C2H4) is a gaseous hormone that affects many aspects of plant growth and development. Ethylene perception requires specific receptors and a signal transduction pathway to coordinate downstream responses. The etr1-1 gene of Arabidopsis encodes a mutated receptor that confers dominant ethylene insensitivity. Evidence is presented here that etr1-1 also causes significant delays in fruit ripening, flower sensecence; and flower abscission when expressed in tomato and petunia plants. The ability of etr1-1 to function in heterologous plants suggests that this pathway of hormone recognition and response is highly conserved and can be manipulated.

[Indexed for MEDLINE]

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