Plant and Cell Physiology, 1970, Vol. 11, No. 4 621-629
© 1970
Article |
Physiological changes accompanying the recovery of cell division in "giant" cells of Chlorella vulgaris (EMERSON strain)
Botany Department, School of Biological Sciences, La Trobe University Melbourne, Australia
A homogeneous population of "giant" cells of the EMERSON strain of Chlorella vulgaris, produced following culture under carefully controlled conditions in a glucose medium in the dark, recovers its capacity to undergo cell division when returned to autotrophic conditions. A similar recovery also occurs after a prolonged period of culture in the dark. The division of the giant cells is accompanied, in each case, by marked pigment synthesis and a consequent recovery of photosynthetic capacity. Under autotrophic conditions the recovery of cell division and restoration of the full pigment concentration are complete within a 24 hr period. The recovery which takes place in a glucose medium in the dark occurs only after a period of 1014 days growth.
(Received May 9, 1970; )
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