Sporulation of Gibberella Zeae V. Respiratory Studies on Sporulating and Nonsporulating Cultures

SUMMARY

Studies on acetate uptake, oxygen consumption and respiratory quotients (RQ), and their relationship to the involvement of the TCA cycle are reported for Gibberella zeae. Sporulating cultures showed a higher acetate and oxygen consumption than nonsporulating cultures presumably due to a higher oxygen supply and higher TCA cycle activity. From the respiratory quotient experiments, it was concluded that sporulating cultures utilized both biosynthetic and oxidative modes of the TCA cycle.