TABLE 1.

Clusters of pH-dependent genes

^aAcid induced (68, 73, 82).

^bData from five arrays from pH 5.0; no significant expression at pH 7.0 and 8.7.

^cAcetate induced (3, 35).

^dExtreme acid resistance (44, 78, 79).

^eBase induced (68, 73, 82).

^fBase induced (16).