Table 2.

Exoenzyme activities in stationary-phase cultures of Thalassospira EM and in bacterioplankton concentrated from water samples from four sampling stations in the eastern Mediterranean as determined by the API ZYM test systema

EnzymeActivity for:
EM +PEM −PH10H02IER01Rho02
Control
Alkaline phosphatase+++++++++++++
Esterase (C4)(+)+
Esterase lipase (C8)+(+)(+)++
Lipase (C14)
Leucine arylamidase+++
Valine arylamidase(+)(+)(+)(+)+
Cystine arylamidase
Trypsin
α-Chymotrypsin
Acid phosphatase+++++(+)(+)(+)(+)
Naphthol-AS-BI-phosphohydrolase(+)++++
α-Galactosidase
β-Galactosidase
β-Glucuronidase
α-Glucosidase
β-Glucosidase
N-Acetyl-β-glucosaminidase
α-Mannosidase
α-Fucosidase
  • a +P, cells grown in ASWGluNPYE; −P, cells grown in ASWGluNYE; −, no activity; (+), weak activity; +, activity; ++, intense activity; +++, very intense activity.