Table 2.
Estimated P- and V-type ATPase activities (in μmol Pi h−1 g−1 tissue wet weight) of L. luymesi plume (LP), L. luymesi root (LR), S. jonesi plume (SP), and S. jonesi root (SR)
ATPase type | Inhibitor sensitivity | ATPase activity (μmol Pi h−1 g−1 WW) | |||
---|---|---|---|---|---|
LP | LR | SP | SR | ||
Total | None | 35.0 | 13.1 | 41.4 | 16.3 |
Total P- and V-type ATPase | NEM | 18.2 | 5.8 | 19.0 | 7.5 |
V-type H + ATPase | Bafilomycin | 3.7 | 0.6 | 9.8 | 0.9 |
Total P-type ATPase | NEM- (Bafilomycin) | 14.5 | 5.2 | 9.3 | 6.6 |
Na+/K+-ATPase | Ouabagenin | 4.1 | 0.7 | 4.3 | 0.4 |
P-type H + -ATPase | NEM- (Bafilomycin + Ouabagenin) | 10.5 | 4.5 | 4.9 | 6.2 |
Proton-specific ATPase activities are in bold