Table 1. Morphological and biochemical characteristics differentiating Streptomyces strains PM1, PM7, and SO6.

Characteristics	Actinobacteria strains
	PM1	PM7	SO6
Gram	+	+	+
Surface	Rugose	Rugose	Rugose
Type of branch	Straight to flexuous	Open loop	Straight to flexuous
Colony pigmentation
Aerial mycelium	Gray	Gray	Gray
Substrate mycelium	Dark red	Blue	Orange
Exopigment	+	+	-
Nitrate reduction	+	+	+
Pyrazinamidase	+	+	-
Pyrrolidonyl arylamidase	+	+	+
Alkaline phosphatase	+	+	+
β-Glucuronidase	-	-	-
β-Galactosidase	+	+	+
α-Glucosidase	+	+	+
N-Acetyl-β-glucosaminidase	+	-	-
Urease	+	-	+
Esculin (β -glucosidase)	+	+	+
Gelatine hydrolysis	+	-	-
*Amylolytic activity	+	+	+
*Proteolytic activity	+	+	+
Fermentation of:
Glucose	-	+	+
Ribose	-	+	+
Xylose	-	+	+
Mannitol	-	+	+
Maltose	+	+	+
Lactose	+	+	+
Sucrose	+	+	+
Glycogen	+	+	+

(+) positive; (−) negative. The type of branch was determined by variable pressure scanning electron microscopy. Pigment color was determined in commercial potato dextrose agar (PDA) medium. Biochemical characteristics were determined using the ApiCoryne kit.

*Methodologies described by Minotto et al. [35] and Vaithanomsat et al. [36].