Effects of pipecolate, lysine, glucose or histidine on the S. pomeroyi growth rate in high-salt medium. Bacterial cultures were grown in 12.5% MB medium containing 400 mM NaCl supplemented with: (a) 0, 5, 10 or 20 mM pipecolate; (b) 0, 5, 10 or 20 mM lysine; (c) 5 mM glucose or 5 mM lysine; (d) 5 mM glucose was replaced by 5 mM histidine.