White rust disease- definition host list, pathogen, symptoms, lifecycle- asexual reproduction
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Answer:
Definition:.
White rust is a disease in plants caused by the oomycete Albugo candida or one of its close relatives. Plants susceptible to this disease generally include members of the Brassica family
Symptoms:
Signs and symptoms of infection include chlorosis on leaf surfaces, white blister-like growths on the underside of leaves and on the stems of the plant, and swelling of the roots
Asexual reproduction:
The fungi reproduce by asexual spores (sporangia) and thick-walled sexual spores (oospores) In systemically infected plants, such as horseradish, the white rust fungus resumes growth early in the spring, invades the shoot primordia, develops along with the growing shoots, and produces pustules on all aerial parts
Life cycle:
The fungus overwinters as resting spores in decaying infected plant tissues (mainly stagheads) or as a seed contaminant. These spores may remain dormant in soil or on seed for a number of years. In the spring, some of the spores germinate and infect the cotyledons and leaves of young susceptible plants.
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