Molecular Requirements for the Biological Activity of Ethylene | Zendy

Stanley P. Burg | Zendy; Ellen A. Burg | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Molecular Requirements for the Biological Activity of Ethylene

Author(s) -

Stanley P. Burg,

Ellen A. Burg

Publication year - 1967

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.42.1.144

Subject(s) - ethylene , ripening , etiolation , chemistry , elongation , receptor , alkylation , auxin , plant hormone , stereochemistry , biophysics , biochemistry , biology , materials science , food science , gene , metallurgy , ultimate tensile strength , enzyme , catalysis

The molecular requirements for ethylene action were investigated using the pea straight growth test. Biological activity requires an unsaturated bond adjacent to a terminal carbon atom, is inversely related to molecular size, and is decreased by substitutions which lower the electron density in the unsaturated position. Evidence is presented that ethylene binds to a metal containing receptor site. CO(2) is a competitive inhibitor of ethylene action, and prevents high concentrations of auxin (which stimulate ethylene formation) from retarding the elongation of etiolated pea stem sections. It is suggested that CO(2) delays fruit ripening by displacing the ripening hormone, ethylene, from its receptor site. Binding of ethylene to the receptor site is also impeded when the O(2) concentration is lowered, and this may explain why fruit ripening is delayed at low O(2) tensions.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research