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Table 1 The morphological characteristics of bacterial and extracellular enzymes belonging bacteria isolates from soil

From: Effects of four soil-originated Bacillus spp. on the great spruce bark beetle, Dendroctonus micans (Kugelann) (Coleoptera: Curculionidae, Scolytinae)

Name of bacteria Gram stain Spore Shape of bacteria Shape of colony Colony color Amylase/chitinase Tween 20/Tween 80 Tributhrin Rho. B agar Xylanase Pectinase 1/pectinase 2 Protease/cellulase
Bacillus mycoides + + Rod-shaped bacteria, non-motile (Bacillus) Fringed, filaments, spiral pattern White, dirty −/− NT NT NT NT NT
Bacillus cereus Rod-shaped (Bacillus) motile Convex, the edges are indented, round White and glistening −/− +/+ +/+ + */++ +/+
Bacillus thuringiensis Bacillus Smooth-round Gray +/+ +/− +/− */− +/+
Bacillus atrophaeus + Bacillus non-motile Smooth-round Grayish white, transparent NT NT NT NT NT NT
Paenibacillus validus + Coccoid Smooth or round slightly convex Very transparent with a milky white NT NT NT NT NT NT
Arthrobacter globiformis + Coccus rods Smooth or round convex Pale cream/pale orange NT NT NT NT NT NT
  1. −, zone diameter; +: < 10 mm, 10 mm ≤ ++ ≤ 20 mm, > 20 mm
  2. NT No experiment
  3. *Bacteria have not grown