Shifts of Bacterioplankton Metabolic Profiles along the Salinity Gradient in a Subtropical Estuary

Table 2

List of carbon substrates in the Biolog EcoPlate.

Category	Carbon substrate	Nutrient*
Polymers; 𝑛=4	Tween 40	C
	Tween 80	C
	𝛼-Cyclodextrin	C
	Glycogen	C
Carbohydrates; 𝑛=10	D-Cellobiose	C
	𝛼 -D-Lactose	C
	beta-Methyl-D-Glucoside	C
	D-Xylose	C
	i-Erythritol	C
	D-Mannitol	C
	N-Acetyl-D-Glucosamine	C + N
	Glucose-1-Phosphate	C + P
	D, L-𝛼 -glycerol Phosphate	C + P
	D-Galactonic acid 𝛾-Lactone	C
Carboxylic acids; 𝑛=7	Pyruvic acid methyl ester	C
	D-Glucosaminic acid	C + N
	D-Galacturonic acid	C
	𝛾 -Hydroxybutyric acid	C
	Itaconic acid	C
	𝛼 -Ketobutyric acid	C
	D-Malic acid	C
Amino acids; 𝑛=6	L-Arginine	C + N
	L-Asparagine	C + N
	L-Phenylalanine	C + N
	L-Serine	C + N
	L-Threonine	C + N
	Glycyl-L-glutamic acid	C + N
Amines; 𝑛=2	Phenylethylamine	C + N
	Putrescine	C + N
Phenolic compounds; 𝑛=2	2-Hydroxy benzoic acid; 4-Hydroxy benzoic acid	C; C

∗Nutrient types are adapted by Sala et al. [23].