Effects of Iron and Oxygen on Chlorophyll Biosynthesis | Zendy

Barbara M. Chereskin | Zendy; Paul A. Castelfranco | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Effects of Iron and Oxygen on Chlorophyll Biosynthesis

Author(s) -

Barbara M. Chereskin,

Paul A. Castelfranco

Publication year - 1982

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.69.1.112

Subject(s) - biosynthesis , chlorophyll , oxygen , chemistry , biochemistry , oxygen metabolism , photosynthesis , environmental chemistry , botany , biology , gene , organic chemistry

The conversion of l-glutamate to delta-aminolevulinate, in preparations of cucumber etiochloroplasts incubated in vitro, was inhibited by protoheme IX and Mg-protoporphyrin IX. Mg-protoporphyrin IX was destroyed in the presence of air and plastids; this breakdown was accelerated by S-adenosyl methionine. Mg-protoporphyrin IX was also converted to protochlorophyllide in vitro. This conversion exhibited an absolute requirement for atmospheric oxygen and was strongly stimulated by S-adenosyl methionine and by darkness.Based on these results, and on the results of the preceding paper (Spiller, Castelfranco, Castelfranco 1981 Plant Physiol 68: 107-111), a comprehensive hypothesis for the role of O(2) and Fe in chlorophyll biosynthesis is formulated.

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