Phorbic Acid Biosynthesis in the Latex Vessel System of Euphorbia | Zendy

Arnold Nordal | Zendy; A.A. Benson | Zendy

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Phorbic Acid Biosynthesis in the Latex Vessel System of Euphorbia

Author(s) -

Arnold Nordal,

A.A. Benson

Publication year - 1969

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.44.1.78

Subject(s) - euphorbia , photosynthesis , euphorbiaceae , botany , chemistry , biochemistry , chlorophyll , biosynthesis , glycoside , biology , enzyme

Evidence is presented that phorbic acid is formed in the latex producing cell system, rather than in photosynthetic or chlorophyll-free tissues of Euphorbia resinifera Berg. When a branch of the plant was kept first in a (14)CO(2) atmosphere with 12 hr light-dark periods for 2 days and then left under natural conditions in the air outside for at least 2 to 3 days, radioactive phorbic acid was found in the latex. Phorbic acid synthesis appeared to be independent of the photosynthetic and respiratory activities of the plant.Besides phorbic acid 2 other major radioactive compounds were recognized in the latex, a glycoside or oligosaccharide, and a lipid belonging to the group of triterpenoid compounds characteristic of the latex in several species of Euphorbia.

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