RUST

Rust

Rusts are plant diseases caused by pathogenic fungi of the order Pucciniales . An estimated 168 rust genera and approximately 7000 species, more than half of which belong to the genus Puccinia, are currently accepted. Rust fungi are highly specialized parasites with several unique features. A single species may produce up to five morphologically and cytologically distinct spore-producing structures viz., spermagonia, aecia, uredinia, telia, and basidia in successive stages of reproduction. Unlike other plant pathogens, rust usually affects healthy and vigorously growing plants, so the infection is limited to plant parts, such as leaves, ...

The above text is a snippet from Wikipedia: Rust (fungus)
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rust

Noun

  1. The deteriorated state of iron or steel as a result of moisture and oxidation.
    The rust on my bicycle chain made cycling to work very dangerous.
  2. A reddish-brown color.
  3. A disease of plants caused by a reddish-brown fungus.

Verb

  1. to oxidize, especially of iron or steel.
    The patio furniture had rusted in the wind-driven spray.
  2. to cause to oxidize.
    The wind-driven spray had thoroughly rusted the patio furniture.
  3. To be affected with the parasitic fungus called rust.
  4. To degenerate in idleness; to become dull or impaired by inaction.


The above text is a snippet from Wiktionary: rust
and as such is available under the Creative Commons Attribution/Share-Alike License.

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