Glycolic Acid Labeling During Photosynthesis with 14CO2 and Tritiated Water | Zendy

Josée Plamondon | Zendy; James A. Bassham | Zendy

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Glycolic Acid Labeling During Photosynthesis with ¹⁴CO₂ and Tritiated Water

Author(s) -

Josée Plamondon,

James A. Bassham

Publication year - 1966

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.41.8.1272

Subject(s) - glycolic acid , chlorella pyrenoidosa , photosynthesis , chemistry , tritiated water , carbon 14 , tritium , oxygen , chlorella , radiochemistry , botany , algae , biochemistry , biology , organic chemistry , lactic acid , genetics , physics , quantum mechanics , bacteria , nuclear physics

Chlorella pyrenoidosa were allowed to photosynthesize for short periods of time in the presence of (14)CO(2) and HTO. Analysis of tritium and (14)C labeling of photosynthetic intermediate compounds showed that the T/(14)C ratio of glycolic acid was comparable to that of intermediate compounds of the photosynthetic carbon reduction cycle when photosynthesis was performed in nearly 100% oxygen and only slightly higher under steady-state conditions. It is concluded that formation of labeled glycolic acid as a consequence of its proposed hydrogen transport role in photosynthesis is quantitatively of limited importance compared to the net synthesis of glycolic acid from CO(2).

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