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Rust (fungus) Rusts are fungal plant pathogens of the order Pucciniales (previously known as Uredinales) causing plant fungal diseases. An estimated 168 rust genera and approximately 7,000 species, more than half of which belong to the genus Puccinia, are currently accepted. [3] Rust fungi are highly specialized plant pathogens with several ...
Puccinia horiana is a microcyclic, autoecious rust, meaning that the fungus has two known spore stages: teliospores and basidiospores, as well as no known alternate host. [6] Similar to other microcyclic rusts, two-celled teliospores produce unicellular basidiospores which are then dispersed via air currents.
Genus: Puccinia. Species: P. mariae-wilsoniae. Binomial name. Puccinia mariae-wilsoniae. Clinton (1873) Puccinia mariae-wilsoniae, commonly known as the spring beauty rust, [1] is a species of rust fungus found in North America. A plant pathogen, it grows on the leaves of the spring beauty flowering plants Claytonia caroliniana and C. virginica .
The use of resistant maize hybrids is the best way to manage P. sorghi. There are two types of resistance that exist. [9] The first is partial resistance which results in fewer rust spots by reducing germination rate. This type of resistance makes P. sorghi less severe by slowing down development of number of urediniospores. The other type of ...
800-290-4726 more ways to ... The Best Raised Metal Garden Beds for Plants ... paint to protect against rust. The vertical stripe-style metal plates are designed to increase durability while the ...
Other cereal rust fungi have macrocyclic, heteroecious life cycles, involving five spore stages and two phylogenetically unrelated hosts. P. striiformis was thought to be microcyclic for centuries until 2009, when a team of scientists at the USDA-ARS Cereal Disease Lab led by Yue Jin confirmed that barberry (Berberis and Mahonia spp.) is an alternate host. [3]
v. t. e. Corrosion is a natural process that converts a refined metal into a more chemically stable oxide. It is the gradual deterioration of materials (usually a metal) by chemical or electrochemical reaction with their environment. Corrosion engineering is the field dedicated to controlling and preventing corrosion. [1][2]
Example of flat piece of concrete having dislodged with corroded rebar underneath, Welland River bridge across Queen Elizabeth Way in Niagara Falls, Ontario. The expansion of the corrosion products (iron oxides) of carbon steel reinforcement structures may induce internal mechanical stress (tensile stress) that cause the formation of cracks and disrupt the concrete structure.