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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
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]
Albugo occidentalis, the causal agent of spinach white rust, is an oomycete plant pathogen, although some discussions still treat it as a fungal organism. Albugo occidentalis is one of the most important spinach diseases in North America, found throughout the United States east of the rocky mountains.
Most commonly, economically detrimental infections occur in guava. [2] Guava is considered to be a susceptible host, and the leaf spot symptoms can grow to be severe enough to reduce plant vigor and cause defoliation. In guava, Cephaleuros virescens can cause fruit spots as well, leading to a reduction in crop yield. [citation needed]
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. [ 1 ] White rust has been known to cause agricultural losses in fields cultivating members of this family including broccoli , cauliflower , and Indian ...
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]
Red rust is known to infect other plants, including mango, coffee, citrus, and guava. It should not be confused with either the fungal coffee leaf rust, a basidiomycete rust; or with coffee red leaf spot, caused by the related C. virescens. Similar symptoms and pathogenesis seem to be present on all hosts. [6]