Accumulation of α-Tocopherol in Senescing Organs as Related to Chlorophyll Degradation | Zendy

Moshe Rise | Zendy; Miriam Cojocaru | Zendy; Hugo E. Gottlieb | Zendy; Eliezer Ε. Goldschmidt | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Accumulation of α-Tocopherol in Senescing Organs as Related to Chlorophyll Degradation

Author(s) -

Moshe Rise,

Miriam Cojocaru,

Hugo E. Gottlieb,

Eliezer Ε. Goldschmidt

Publication year - 1989

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.89.4.1028

Subject(s) - tocopherol , degradation (telecommunications) , chlorophyll , botany , chemistry , chlorophyll a , biology , environmental chemistry , biochemistry , vitamin e , antioxidant , computer science , telecommunications

alpha-Tocopherol (alpha-T) has been identified, using gas chromatography-mass spectroscopy and (1)H- and (13)C-nuclear magnetic resonance, in senescing leaves of Melia azedarach L. The content of alpha-T increased concomitantly with the breakdown of chlorophyll in senescing Vinca and Melia leaves. An increase in alpha-T was found also in detached Melia leaves, senescing in either light or darkness and in senescing, ethylene-treated orange leaves and fruit. The possibility that phytol, which is released from chlorophyll by chlorophyllase is utilized for the biosynthesis of alpha-T is discussed. Senescing leaves of the low chlorophyllase plants, parsley and tobacco, did not contain alpha-T in measureable amounts.

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