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Plant Physiol. (1990) 93, 1433-1440 0032-0889/90/93/1 433/08/$01 .00/0

Summary: Plant Physiol. (1990) 93, 1433-1440
0032-0889/90/93/1 433/08/$01 .00/0
Received for publication December 1, 1989
Accepted Accepted March 7, 1990
Response of the Photosynthetic Apparatus in
Dunaliella salina (Green Algae) to Irradiance Stress'
Barbara M. Smith, Peter J. Morrissey, Jeanne E. Guenther, Jeff A. Nemson, Michael A. Harrison,
John F. Allen, and Anastasios Melis*
Department of Plant Biology, University of California, Berkeley, California 94720 (B.M.S., P.J.M., J.E.G., J.A.N.,
A.M.); and Department of Pure and Applied Biology, The University of Leeds, Leeds LS2 9JT,
United Kingdom (M.A.H., J.F.A.)
The response of the photosynthetic apparatus in the green
alga Dunaliella salina, to irradiance stress was investigated. Cells
were grown under physiological conditions at 500 millimoles per
square meter per second (control) and under irradiance-stress
conditions at 1700 millimoles per square meter per second inci-
dent intensity (high light, HL). In control cells, the light-harvesting
antenna of photosystem I (PSI) contained 210 chlorophyll a/b
molecules. It was reduced to 105 chlorophyll a/b in HL-grown


Source: Allen, John F. - School of Biological and Chemical Sciences, Queen Mary, University of London


Collections: Renewable Energy; Biology and Medicine