Table 1. Morphology and biochemical characterization of the strains.

strain	1#	2#	3#	4#	5#
colony morphology	yellow	canary yellow	white translucent	white translucent	white
colony size	small	small	small	small	big
Surface wetting	+	+	+	+	-
gram stain	-	-	-	-	+
flagella stain	+	+	+	+	+
spore stain	-	-	-	-	+
starch hydrolysis test	+	-	-	-	-
Sugar fermentation test	-	-	+	-	+
methyl red test	+	+	+	-	+
V-P test	+	-	-	-	-
indole test	-	+	+	+	-
catalase test	+	+	+	+	+

+, positive; −, negative.