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. 1967 Apr;42(4):585-97.
doi: 10.1104/pp.42.4.585.

Isolation and characterization of peanut spherosomes

T J Jacks  1 , L Y Yatsu, A M Altschul
Affiliations

Isolation and characterization of peanut spherosomes

T J Jacks et al. Plant Physiol. 1967 Apr.

Abstract

Spherosomes of cotyledons of germinating peanuts (Arachis hypogea L.) were examined by electron microscopy and found to be particles about 1.0 to 2.0 mu in diameter bounded by a limiting membrane. Isolated spherosomes appear similar to spherosomes in situ. The isolated spherosomes are composed of 98.1% total lipids, 0.77% phospholipid and 1.27% protein by dry weight. The amounts of protein and phospholipid associated with the isolated spherosomes are sufficient to account for limiting membranes. Spherosomes amply account for the lipid in a peanut cotyledon. The activity of lipase and fatty acyl-Coenzyme A synthetase is not associated with the isolated spherosomes. This suggests that peanut spherosomes are principal sites of lipid storage but not of lipid degradation.

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