uredospore

(redirected from urediniospore)
Also found in: Dictionary, Encyclopedia, Wikipedia.

uredospore

or

urediniospore

a BINUCLEATE rust-coloured SPORE produced by RUST FUNGI at a certain stage in the life cycle. Various spore stages have been defined; uredospores are formed in the summer and are the main dispersal agent of the rust Puccinia. The uredospore germinates to produce a binucleate MYCELIUM, from which new uredospores are produced.
References in periodicals archive ?
Effect of postsymptom application of fungicides on urediniospore production by Puccinia triticina on wheat and P hemerocallidis on daylily.
DNA was extracted from urediniospores collected from field infected and inoculated 'Alamo' plants and primers Rust1 (2) and PuccF (5'-CAATGGATCTCTAGGCTCTC-3', B.
The numbers of urediniospores of each strain inoculated onto the leaves in each pot were estimated by observing urediniospore deposition on clear plastic strips in the pots (method described in Inoculation).
Urediniospores subglobose or ovoid, yellowish brown, 12-18 x 16-26 um; wall densely echinulate, germ pores 2-4,scattered.
double dagger]) Units are on a scale of 0 = no uredinia, 1 = chlorotic flecks, 2 = small uredinia surrounded by necrosis with limited urediniospore production, 3 = medium size uredinia with moderate sporulation, and 4 = large uredinia and abundant sporulation.
tritici pathotype QCCJ at the early jointing stage by injecting an aqueous suspension of urediniospores into the hollow culm of plants chosen at random at [appproximately equals] 0.
UREDINIOSPORES globose to ellipsoid, light brown, wall chestnut brown, 20-32.
Uredinia are observed initially in the dark dots that progressively acquire a light brown to red brown color and open in a minute pore releasing the colorless urediniospores, which become tan and accumulate around the pores (Balardin, 2002; Yorinori et al.
8 mm wide, erumpent, powdery, without peridium, orange-yellowish fading to pale yellow; urediniospores 25-32 x 16-24 [micro]m, broadly ellipsoid to subglobose or angular, catenulate, coarsely verrucose, wall 1.
Two types are found on daylilies in the United States and Costa Rica: urediniospores and teliospores.
Deposition gradients of urediniospores of Puccinia recondita near a source.