10 Pucciniomycotina

Aime, M. Catherine; Toome, Merje; McLaughlin, David J.

doi:10.1007/978-3-642-55318-9_10

Cited by 62 publications

(47 citation statements)

References 90 publications

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“…(4, 6, 7). The subphylum Pucciniomycotina is a sister group of the clade containing Ustilaginomycotina and Agaricomycotina, and consists of more than 8,400 described species (8). Besides the array of saprobic yeast species usually recovered from soils, aquatic habitats, or the phylloplane (e.g., Rhodotorula spp.…”

Section: Breeding Systems and Lifestyles In The Basidiomycotamentioning

confidence: 99%

Fungal Sex: The Basidiomycota

et al. 2017

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SUMMARY Fungi of the Basidiomycota, representing major pathogen lineages and mushroom-forming species, exhibit diverse means to achieve sexual reproduction, with particularly varied mechanisms to determine compatibilities of haploid mating partners. For species that require mating between distinct genotypes, discrimination is usually based on both the reciprocal exchange of diffusible mating pheromones, rather than sexes, and the interactions of homeodomain protein signals after cell fusion. Both compatibility factors must be heterozygous in the product of mating, and genetic linkage relationships of the mating pheromone/receptor and homeodomain genes largely determine the complex patterns of mating-type variation. Independent segregation of the two compatibility factors can create four haploid mating genotypes from meiosis, referred to as tetrapolarity. This condition is thought to be ancestral to the basidiomycetes. Alternatively, co-segregation by linkage of the two mating factors, or in some cases the absence of the pheromone-based discrimination, yields only two mating types from meiosis, referred to as bipolarity. Several species are now known to have large and highly rearranged chromosomal regions linked to mating-type genes. At the population level, polymorphism of the mating-type genes is an exceptional aspect of some basidiomycete fungi, where selection under outcrossing for rare, intercompatible allelic variants is thought to be responsible for mating types that may number several thousand. Advances in genome sequencing and assembly are yielding new insights by comparative approaches among and within basidiomycete species, with the promise to resolve the evolutionary origins and dynamics of mating compatibility genetics in this major eukaryotic lineage.

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Section: Breeding Systems and Lifestyles In The Basidiomycotamentioning

confidence: 99%

Fungal Sex: The Basidiomycota

et al. 2017

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“…(Microbotryales)) (Cantu et al ., ; Duplessis et al ., ; Kumar et al ., ; http://www.jgi.doe.gov/fungi; http://www.broadinstitute.com; http://www.ncbi.nlm.nih.gov). Thus, of the nine classes and 20 orders described to date within Pucciniomycotina (Schell et al ., ; Toome et al ., ; Aime et al ., ), complete annotated genomes are only available for two classes and three orders; some incomplete and unannotated genomic data are available for seven additional Pucciniomycotina species – six additional rust fungi and a draft genome for M. osmundae (Nishida et al ., ; http://www.ncbi.nlm.nih.gov).…”

Section: Introductionmentioning

confidence: 99%

Genome sequencing provides insight into the reproductive biology, nutritional mode and ploidy of the fern pathogenMixia osmundae

et al. 2013

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SummaryMixia osmundae (Basidiomycota, Pucciniomycotina) represents a monotypic class containing an unusual fern pathogen with incompletely understood biology. We sequenced and analyzed the genome of M. osmundae, focusing on genes that may provide some insight into its mode of pathogenicity and reproductive biology.Mixia osmundae has the smallest plant pathogenic basidiomycete genome sequenced to date, at 13.6 Mb, with very few repeats, high gene density, and relatively few significant gene family gains.The genome shows that the yeast state of M. osmundae is haploid and the lack of segregation of mating genes suggests that the spores produced on Osmunda spp. fronds are probably asexual. However, our finding of a complete complement of mating and meiosis genes suggests the capacity to undergo sexual reproduction. Analyses of carbohydrate active enzymes suggest that this fungus is a biotroph with the ability to break down several plant cell wall components.Analyses of publicly available sequence data show that other Mixia members may exist on other plant hosts and with a broader distribution than previously known.

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“…For example, species of basidiomycete genera such as Rhodotorula and Sporobolomyces (Pucciniomycotina), Tilletiopsis (Ustilaginomycotina) and Cryptococcus (Agaricomycotina) are frequently isolated as epiphytes and endophytes from healthy or senescent leaves and other above-ground parts of many groups of angiosperms, gymnosperms and pteridophytes (e.g. Camatti-Sartori et al 2005, Albu 2012, Toome et al 2013, Aime et al 2014.…”

Section: Introductionmentioning

confidence: 99%

Violaceomyces palustris gen. et sp. nov. and a new monotypic lineage, Violaceomycetales ord. nov. in Ustilaginomycetes

2015

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Numerous strains of a novel yeast were isolated in Louisiana, USA, from the leaves of several palustrine plants, most frequently from the invasive aquatic ferns Salvinia minima and S. molesta. This fungus produced fast-growing colonies that were grayish violet to dark blue in culture and rapidly reproduced via production of copious ballistoconidia that germinated to form pseudohyphae. Colonies produced many two-celled yeasts that were distinctly hourglass-or peanut-shaped, and occurred singly or in chains. Phylogenetic analyses of translation elongation factor 1-α, β-tubulin and the nuc rDNA regions encompassing 28S D1-D2 domains, 18S and the internal transcribed spacers 1 and 2, including 5.8S, indicate this fungus is a member of Ustilaginomycetes but holds an isolated position, distinct from the two currently recognized orders, Ustilaginales and Urocystales. Here we describe Violaceomycetales ord. nov., Violaceomycetaceae fam. nov. and Violaceomyces palustris gen. et sp. nov. for this unusual fungus.

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10 Pucciniomycotina

Cited by 62 publications

References 90 publications

Fungal Sex: The Basidiomycota

Fungal Sex: The Basidiomycota

Genome sequencing provides insight into the reproductive biology, nutritional mode and ploidy of the fern pathogenMixia osmundae

Violaceomyces palustris gen. et sp. nov. and a new monotypic lineage, Violaceomycetales ord. nov. in Ustilaginomycetes

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