Skip to main content
. 2009 Nov 6;76(1):329–337. doi: 10.1128/AEM.02318-09

TABLE 2.

Morphological characteristics of Wallemia spp.

Organism % NaCl in growth medium Cell type or morphology Colony morphology on solid medium Presence or absence ofa:
Cell wall indentations EPS
W. ichthyophaga 15 Multicellular clumps Light brown to yellowish/olive green; punctiform; heaped; soft; spreading deeply into the agar; yellow reverse (see Fig. 4a) + +++
25 Multicellular clumps White, yellowish to light green; heaped; soft; did not spread deeply into the agar; reduced area in contact with agar; light yellow reverse (see Fig. 4b) ++ ++
W. muriae 5 Hyphae Brown; round shape with light margin; powdery (high no. of spores), dry; spreading deeply into the agar; brown reverse (see Fig. 1a) - +
20 Hyphae Light brown to white; when white also dusty (high no. of spores); variable shape with light beige shaggy margin; heaped, powdery, dry; spreading into the agar; reduced area in contact with agar, pronounced aerial hyphae; brown reverse (see Fig. 1b) + +
W. sebi 5 Hyphae Light brown, with the center being lighter, with light tan hyphae; round shape with light shaggy marginal surface; powdery (high no. of spores), dry; spreading deeply into the agar; brown reverse (see Fig. 1g) - +
20 Hyphae Rust brown with light margin, off white in the center; powdery, dry; spreading into the agar, not deeply; reduced area in contact with agar, brown reverse (see Fig. 1h) + +
a

-, Not present; +, present; ++, pronounced; +++, abundant.