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.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Under favorable environmental conditions, Pst urediospores landing on the surface of wheat leaves germinate, produce germ tubes and appressoria, and then penetrate into wheat leaf tissues [1,5].
The generated monopustule isolates were then further multiplied on Morocco until sufficient urediospores were collected for differential host test.
E., and Coauthors, 2013: Urediospores of rust fungi are ice nucleation active at > -10[degrees]C and harbor ice nucleation active bacteria.
Table 2--Percentage of germination (G) and reduce germination (RG) of urediospores of Phakopsora euvitis collected in 'Niagara Rosada" grape plants treated with fungicides at two, four and eight days after inoculation.
Henn.) on the basis of artificial inoculation in 1998 to 2001 with a bulk of urediospores collected in eastern Montana from 1990 to 1996.
The longest well-documented single movement of urediospores in North America was at least 680 km, between two wheat-growing regions in Canada separated by forest, lakes, and tundra (Roelfs 1985).