uredospore

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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 ?
Urediniospores were globose, echinulate, 24.9 [+ or -] 2.7 [micro]m in diameter, with 3 equatorial pores and 1.5 to 2.0 [micro]m thick cinnamon walls.
Six-day-old seedlings were sprayed, four pots at a time, with 0.5 mL (total volume) urediniospore suspension on a rotating turntable.
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.
Urediniospores stored in evacuated glass tubes in liquid N were heat-shocked at 40 [degrees] C for 10 min and increased in the greenhouse by inoculating plants of the susceptible oat cultivar, Markton.
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] 0.75-m intervals along each spreader row.
UREDINIOSPORES globose to ellipsoid, light brown, wall chestnut brown, 20-32.5 x 22.5-32.5 um, wall 1.5-2.5 um thick, echinulate, germ pores-3.
Survival of dispersed urediniospores of Tranzschelia discolor Fckl.(Tranz&Litv) on leaves of Prunus domestica L.
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., 2004; Almeida et al., 2005).