L. Dyas et Lj. Goad, THE OCCURRENCE OF FREE AND ESTERIFIED STEROLS IN THE OIL BODIES ISOLATED FROM MAIZE SEED SCUTELLA AND A CELERY CELL-SUSPENSION CULTURE, Plant physiology and biochemistry, 32(6), 1994, pp. 799-805
Oil bodies were isolated from the scutella of Zea mays (maize), and fr
om cell suspension cultures of Apium graveolens (celery) and shown to
contain at least 60% of the total steryl ester present in the cells. T
he proportions of free and esterified sterols present in the oil bodie
s were estimated. The free serols comprised a low proportion in both s
pecies (<0.5% of the total lipid in the oil body). Steryl esters const
ituted only 0.2% of the oil body lipids of maize, but 4.5% of the tota
l lipid of celery oil bodies. There was Little difference in the compo
sition of free and esterified sterols between maize oil body and non-o
il body material,but the proportion of precursor 4-methylsterols in th
e free sterol fraction of celery was somewhat enhanced within the oil
body.