Pleomorphism in Selected Genera of Algae Page: 42
vi, 79 leaves : ill.View a full description of this thesis.
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42
contained a single plastid which occupied the median portion
of the cell. Pyrenoids were absent and two autospores were
formed in each parent cell. By the end of the fifth week,
cultures grown in BBM deficient in potassium monohydrogen
phosphate, potassium dihydrogen phosphate, or sodium chloride,
contained numerous cells filled with oil droplets. At the
end of the sixth week, 50 per cent or more of the cells ob-
served in sodium chloride deficient BBM were filled with oil
droplets. Wide variation in cell shape was observed in cal-
cium chloride, potassium monohydrogen phosphate, and potassium
dihydrogen phosphate, and sodium chloride deficient BBM.
In Figure I, cells of T. bitridens are drawn as they
were observed in complete and deficient BBM during both the
first and second runs. Spherical cells, although most fre-
quently observed in magnesium sulfate deficient BBM (Figure 1, e)
were also seen in complete BBM (Figure 1, a) and in BBM de-
ficient in either calcium chloride, potassium dihydrogen
phosphate, or sodium chloride. In magnesium sulfate deficient
BBM spines were reduced or absent and pyrenoids were absent.
Small to medium angular cells were consistently observed in
complete BBM and BBM deficient in calcium chloride, potassium
monohydrogen phosphate (Figure 1, g), potassium dihydrogen
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Bruton, Barbara A. Pleomorphism in Selected Genera of Algae, thesis, June 1967; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc163903/m1/48/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .