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Plant Physiology 79:751-755 (1985)
© 1985 American Society of Plant Biologists

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Articles

Intracellular Localization of Lunularic Acid and Prelunularic Acid in Suspension Cultured Cells of Marchantia polymorpha

Setsuko Abe Imoto and Yoshimoto Ohta

Suntory Institute for Bioorganic Research, 1-1-1 Wakayamadai, Shimamoto-cho, Mishima-gun, Osaka 618, Japan

Intracellular localization of lunularic acid and prelunularic acid in suspension cultured cells of Marchantia polymorpha L. was studied. The sum of both compounds was determined as lunularic acid group (LNAs) because of the instability of prelunularic acid to convert into lunularic acid.

Mechanical disruption of the cells followed by differential centrifugation showed that LNAs was associated with the supernatant of 100,000g centrifugation. Protoplasts isolated from the cells were osmotically ruptured and the distribution of LNAs among the organelles was examined by discontinuous density gradient centrifugation of the protoplast contents. Successful isolation of intact chloroplasts, mitochondria and peroxisomes free from cytoplasm indicated that LNAs was not accumulated in these organelles. Flotation techniques resulted in an efficient isolation of pure vacuoles and revealed that LNAs was distributed almost equally in the vacuoles and cytoplasm.






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Copyright © 1985 by the American Society of Plant Biologists