Red light-mediated changes in inositol phospholipids and phosphatidylcholine in Brassica hypocotyls
1993
Pal, S. | Acharya, M.K. | Guha-Mukherjee, S.
We have investigated the effect of a red light stimulus on rapid turnover of phosphoinositides and phosphatidylcholine when incubation was carried out in the dark after removal of the stimulus in etiolated Brassica oleracea hypocotyls. At 30 sec there was a remarkable decrease in phosphatidylinositol-4,5-bisphosphate as compared to the control. The amounts of inositol-1,4-bisphosphate and inositol-1,4,5-trisphosphate also decreased at 30 sec, whereas there was a sharp increase in inositol-4-monophosphate. There was also a decrease in phosphatidylcholine content within 30 sec. The role of phospholipid turnover in cell proliferation by red light is discussed.
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