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