Dissertation Proposal - The University of Arizona Campus Repository

Table 6. The net effect that mutant forms and developmental modes have on Vup.
Nqf ∆Μg 6πηR
Net effect on
Vup
D2 0 + 0 −
D3 0 + 0 −
D4 0 0 0 0
Vr 0 − − +
reg − 0 0 −
gls/reg − 0 0 −
lag 0 0 + −
Note: An increase (+) in Nqf increases Vup (+), but an increase in ∆Μg and 6πηR
decreases Vup (−). D2 and D3 colonies have on average a lower Vup because in
proportion they have more reproductive tissue when they hatch, increasing their
mass ∆M. In contrast, when they hatch V. rousseletii colonies have a lower R and
∆M and, thus, a higher Vup because they retain robust cytoplasmatic bridges and
their flagellated and reproductive cells are significantly smaller. The lower Vup of
regA - and gls/regA - colonies is due to a decrease in the flagellar beating force f of
the regenerated somatic cells. Lag - colonies have on average a larger R which
increases the drag and negatively affects Vup.
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