Life Cycle
All rusts are obligate parasites, meaning that they require a living host to complete their life cycle. They generally do not kill the host plant but can severely reduce growth and yield. Cereal crops can be devastated in one season and trees that get infected in the main stem within the first five years, invariably die.
Rust fungi can also be categorized by their life cycle. Heteroecious rust fungi require two unrelated hosts to complete their life cycle, with the primary host being infected by aeciospores and the alternate host being infected with basidiospores. This can be contrasted with an autoecious fungus which can complete its life cycle on a single host species.
Read more about this topic: Rust (fungus)
Famous quotes containing the words life and/or cycle:
“Tomorrow in the offices the year on the stamps will be altered;
Tomorrow new diaries consulted, new calendars stand;
With such small adjustments life will again move forward
Implicating us all; and the voice of the living be heard:
“It is to us that you should turn your straying attention;
Us who need you, and are affected by your fortune;
Us you should love and to whom you should give your word.””
—Philip Larkin (1922–1986)
“Oh, life is a glorious cycle of song,
A medley of extemporanea;
And love is a thing that can never go wrong;
And I am Marie of Roumania.”
—Dorothy Parker (1893–1967)