The symptoms caused by citrus canker are pustules to necrotic lesions consisting of erumpent
corky tissues surrounded by oily or water-soaked margins and yellow halo.
UREDINIA mainly hypophyllous with spots surrounded by light green rings, mostly in groups, confluent, rounded, dark brown, erumpent
. UREDINIOSPORES are single celled, globose-ovoid or subglobose, 20-27.5 x 20-30 um, wall 1-1.5 um thick, light brown to reddish brown, smooth, germ pores equatorial and 1-2.
And for Chris Packham and the team to keep themselves interested by chucking in words like "corpuscular" and "erumpent
" for us all to learn.
Sexual state: Ascomata immersed, initially erumpent
becoming superficial, scattered, depressed-globose, some flattened at the base, opening a disc-like lid of brown prismatic cells with setae.
Perithecia globose to subglobose, blackish, 0.4-0.9 mm diam., embedded in the host tissue, with a long, cylindrical, slender neck; neck erumpent
from the substratum surface, 1.2-1.6 mm; brownish masses of spores (cirri) are frequently observed above the necks.
In October, 1995, in North America, white erumpent
sori were detected on the undersurfaces of leaves of a bed of Gerbera jamesonii that diagnose as white rust .
2) in small, loose to dense fascicles, occasionally solitary, arising from internal hyphae or hyphal aggregations, erumpent
through the cuticle or emerging through stomata, erect, subcylindrical to geniculate-sinuous, often denticulate, simple, rarely branched, 10-70 X 3-8 [micro]m, continuous to 1-3-septate, pale olivaceous, olivaceous-brown to brown, wall thin to slightly thickened, smooth of almost so; conidiogenous cells integrated, terminal of conidiophores reduced to conidiogenous cells, 10-25 [micro]m long; conidiogenous loci conspicuous, often denticle-like, apex truncate, 1.5 3 [micro]m wide, non-pigmented to distinctly pigmented, but consistently unthickened.
For Scrabble players, let's try exigent, etiolated, epitomical, effulgent, esemplastic, erumpent
, and embrasured.
From the mass of host cells in which parasite nuclei and mitochondria replicate, an erumpent
thallus differentiates, protrudes from the host, and ultimately produces reproductive structures (spores, gametes).