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Uredinales    
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Uredinales
n 1: rust fungi: parasitic fungi causing rust in plants;
sometimes placed in [synonym: {Uredinales}, {order Uredinales}]

Uredinales \Uredinales\, prop. n. pl. (Biol.)
An order of fungi of the phylum Basidiomycota, comprising the
rust fungi.
[PJC]

The order {Uredinales} includes between an estimated
5,000 and 7,000 species of diverse plant pathogens.
They have been around since the Carboniferous Age
(250-300 million years ago), and were well established
on the very first ferns. Members of Uredinales are well
enough adapted that they inhabit every continent except
for Antarctica. Commonly known as the "rust fungi,"
they attack nearly all types of plant life, and are
economically devastating to many crops. Members of
Uredinales have a very diverse and complex life
cycle-that may affect more than one host family and
include up to five different stages.
Morphological Features:
Uredinales includes both autoecious and heteroecious
parasites. Autoecious genera infect only one plant
host, while heteroecious genera carry out different
parts of their life cycle on two different hosts. One
example of a heteroecious fungus, Puccinia graminis,
the black stem rust of wheat, requires both the
barberry bush and a grass to complete its complicated
life cycle.
Life cycles of Uredinales are very diverse and complex.
Some genera have up to five stages of their life cycle:
Spermagonia, Aecia, Uredinia, Telia, and Basidia.
Spores are produced in each stage with differing
ploidy: spermatia (n), aeciospores (nn),
unidiniospores (nn), teliospores (nn to 2n), and
basidiospores (n). Genera that do not exhibit all five
of these stages either show three or four instead.
Ecology:
Uredinales comprise the most devastating plant
pathogens of all Basidiomycota. Genera of Uredinales
are responsible for diseases such as: coffee rust,
cedar-apple rust, black stem rust of cereals, carnation
rust, and peanut rust. There are thousands of other
rusts that haven�t been listed that are also
responsible for being seriously detrimental to many
genera of plants.
Despite all of the ecological problems that these fungi
cause to plants, recent efforts have attempted to use
some of these rusts to control weedy pests.
--Kari Jensen (University of Wisconsin, course material)
[available at:
http://botit.botany.wisc.edu/courses/Botany_332/uredinales.html]
[PJC]


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  • Rust (fungus) - Wikipedia
    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 (order Pucciniales, formerly Uredinales)
    Rust fungi are a common, interesting and economically significant group of fungi They are obligate parasites of flowering plants, including a number of important crop species: corn, wheat and most cereal grains Many rust fungi are heteroecious, meaning that they alternate between two hosts
  • What Are Rust Fungi? - Purdue University College of Agriculture
    Rust fungi (Pucciniales, formerly Uredinales) belong to subphylum Pucciniomycotina, which is considered the earliest diverging lineage in Basidiomycota (Aime et al 2014; Padamsee et al 2012)
  • UREDINALES Definition Meaning - Merriam-Webster
    The meaning of UREDINALES is a large order of parasitic, basidiomycetous fungi that cause rusts in plants, have complex life cycles involving usually pycnial, aecial, uredinial, and telial stages often on different hosts, and are distinguished from the smuts by producing on a sterigma basidiospores which germinate not by budding but by growing
  • Uredinales: Life Cycle, Classification and Specialization
    The Uredinales, or rust fungi comprise a large group of obligate parasites They are called rusts, because of the rusty, reddish-brown colour of their spores, which are formed chiefly upon surfaces of host leaves and stems in pustular outgrowths (Fig 261 A, D E)
  • 2. 45: Rust fungi (order Pucciniales, formerly Uredinales)
    Rust fungi are a common, interesting and economically significant group of fungi They are obligate parasites of flowering plants, including a number of important crop species: corn, wheat and most cereal grains Many rust fungi are heteroecious, meaning that they alternate between two hosts
  • The Uredinales: Cytology, Biochemistry, and Molecular Biology
    Fungi belonging to the order Uredinales are commonly referred to as rust fungi All members of the Uredinales are parasitic on plants, often causing dramatic losses in various important crop plants (Alexopoulos et al 1996)
  • What does uredinales mean? - Definitions. net
    Uredinales, also known as rust fungi, is an order of fungi characterized by their production of rust-like spores They are typically plant pathogens, causing rust diseases in many plant species and significantly damaging crops and other plants
  • Order Uredinales (Uredinales) - virtualzoo. org
    The order Uredinales, commonly known as rust fungi, is a group of obligate plant pathogens within the phylum Basidiomycota Rust fungi are characterized by their complex life cycles, often involving multiple spore types and sometimes requiring two different host species to complete their development (heteroecious life cycle)
  • Urediniomycetes - an overview | ScienceDirect Topics
    Plant pathogenic rust fungi are Urediniomycetes, placed within the order Uredinales This order contains some of the most destructive pathogens of vascular plants Rust diseases have caused famines and ruined the economies of entire civilizations





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