The Platygloeales are an

order Order, ORDER or Orders may refer to: * A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica * Categorization, the process in which ideas and objects are recognized, differentiated, and understood ...

fungi A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...

in the class

Pucciniomycetes Pucciniomycetes (formerly known as Urediniomycetidae) is a diverse class of fungi in the subphylum Pucciniomycotina of phylum Basidiomycota. The class contains 5 orders, 21 families, 190 genera, and approximately 8,016 species. It has been estima ...

Species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

in the order have auricularioid

basidia A basidium (: basidia) is a microscopic spore-producing structure found on the hymenophore of reproductive bodies of basidiomycete fungi. The presence of basidia is one of the main characteristic features of the group. These bodies are also ...

(tubular with lateral septa) and are typically plant parasites on mosses, ferns, and

angiosperms Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed within a fruit. T ...

, though '' Platygloea'' species appear to be

saprotrophic Saprotrophic nutrition or lysotrophic nutrition is a process of chemoheterotrophic extracellular digestion involved in the processing of decayed (dead or waste) organic matter. It occurs in saprotrophs, and is most often associated with fungi ...

Taxonomy

History

The order was described in 1990 by American

mycologist Mycology is the branch of biology concerned with the study of fungi, including their taxonomy, genetics, biochemical properties, and use by humans. Fungi can be a source of tinder, food, traditional medicine, as well as entheogens, poison, and ...

Royall T. Moore Royall Tyler Moore (October 11, 1930 – August 17, 2014) was an American-born mycologist and mycology professor. Education and work He received his doctorate from the Harvard University in 1959, writing his dissertation on the fungal genus '' ...

to accommodate fungi with auricularioid (laterally septate) basidia and simple

septal pores In algal anatomy, a pit connection is a hole in the septum between two algal cells, and is found only in multicellular red algae − specifically in the subphylum Eurhodophytina, except haploid Bangiales. They are often stoppered with proteinaceous ...

that were formerly placed in the

Auriculariaceae The Auriculariaceae are a family (biology), family of fungi in the order (biology), order Auriculariales. Species within the family were formerly referred to the "heterobasidiomycetes" or "jelly fungi", since many have gelatinous basidiocarps (fr ...

. The latter group was distinguished by having dolipore (not simple) septa. As such, Moore's Platygloeales included not only ''Platygloea'', but genera such as '' Helicobasidium'', '' Mycogloea'', and '' Kriegeria''. Subsequently, the order was extended to include most auricularioid fungi not included in the Auriculariaceae, including the genera '' Colacogloea'', '' Naohidea'', and '' Occultifur''.

Current status

Molecular A molecule is a group of two or more atoms that are held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions that satisfy this criterion. In quantum physics, organic chemistry, ...

research, based on

cladistic Cladistics ( ; from Ancient Greek 'branch') is an approach to biological classification in which organisms are categorized in groups ("clades") based on hypotheses of most recent common ancestry. The evidence for hypothesized relationships is ...

analysis of

DNA sequences A nucleic acid sequence is a succession of bases within the nucleotides forming alleles within a DNA (using GACT) or RNA (GACU) molecule. This succession is denoted by a series of a set of five different letters that indicate the order of the ...

, has restricted the Platygloeales

sensu stricto ''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular c ...

to a small group of related genera, placing genera formerly classified in the Platygloeales into various other orders, including the

Agaricostilbales The Agaricostilbales are an order of fungi in the class Agaricostilbomycetes. The order consists of six families and 15 genera. Agaricostilbales was originally described in 1989 by Franz Oberwinkler and Robert Bauer with just two families, the ...

Cystobasidiales The Cystobasidiales are an order of fungi in the class Cystobasidiomycetes. The order currently consists of a single family ( Cystobasidiaceae) and two genera as yet unassigned to a family ('' Begerowomyces'' and '' Robertozyma''). Many species ...

, Helicobasidiales,

Kriegeriales The Kriegeriales are an order of fungi in the subdivision Pucciniomycotina. Most species are known only from their yeast states and can be found in a variety of habitats, ranging from arctic waters to tropical ferns. Hyphal states produce auric ...

, and Naohideales.

References

{{Taxonbar, from=Q10633354 Basidiomycota orders Taxa described in 1990 Pucciniomycotina Taxa named by Royall T. Moore