Search results
Results from the WOW.Com Content Network
Although simple skin exposure is most common, ingestion of urushiol can lead to serious, systemic reactions. Burning plant material is commonly said to create urushiol-laden smoke that causes a systemic reaction, as well as a rash in the throat and eyes. Firefighters often get rashes and eye inflammation from smoke-related contact. [9]
Rust fungi are obligate plant pathogens that only infect living plants. Infections begin when a spore lands on the plant surface, germinates, and invades its host. Infection is limited to plant parts such as leaves, petioles, tender shoots, stem, fruits, etc. [3] Plants with severe rust infection may appear stunted, chlorotic (yellowed), or may
The plant does this by killing the diseased plant cells forming the halo. Disease progression can cause leaves to wither and fall off of the plant. The stems of the bean plant are also affected by the rust and show symptoms of the rust pustules but are often bigger than those that are found on the leaf surface.
Infections can lead up to 20% yield loss. The pathogen is a Puccinia rust fungus. It is the most prevalent of all the wheat rust diseases, occurring in most wheat-growing regions. [1] It causes serious epidemics in North America, Mexico and South America and is a devastating seasonal disease in India.
Albugo candida, commonly known as white rust or white blister rust, is an obligate plant pathogen in the family Albuginaceae that infects Brassicaceae species. [2] (Although called a "rust" and a fungus, it is an oomycete.) It has a relatively smaller genome than other oomycetes. [3]
Spruce broom rust or yellow witches' broom rust is a fungal plant disease caused by the basidiomycete fungus known as Chrysomyxa arctostaphyli.It occurs exclusively in North America, with the most concentrated outbreaks occurring in northern Arizona and southern Colorado on blue and Engelmann spruce, as well as in Alaska on black and white spruce. [2]
White rust plant diseases caused by Albugo fungal-like pathogens should not be confused with white pine blister rust, Chrysanthemum white rust or any fungal rusts, all of which are also plant diseases but have completely different symptoms and causal pathogens.
Rust diseases are among the most destructive plant diseases, known to cause famine following destruction of grains, vegetables, and legumes. [5] [6] Asparagus rust occurs wherever the plant is grown and attacks asparagus plants during and after the cutting season. Asparagus spears are usually harvested before extensive rust symptoms appear. [7]