Repeated formation of correlated species in Tranzschelia (Pucciniales)

Schöller, M.; Lutz, Matthias; Aime, M. Catherine

doi:10.1007/s11557-018-1417-2

Cited by 11 publications

(7 citation statements)

References 34 publications

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“…One explanation, Tranzschel’s law ( Arthur 1929 , Jackson 1931 ), posits that autoecious-microcyclic rusts are derived from heteroecious-macrocyclic life cycles that have been restricted to the gametothallus host. Evidence of this has been found at the scale of recently diverging, correlated species ( Scholler et al 2019 ). The authors posit that this plasticity of life cycle provides the template for multiple avenues of speciation, not just on the gametothallus host as demonstrated, but hypothetically from the sporothallus host as well ( Scholler et al 2019 ).…”

Section: Discussionmentioning

confidence: 92%

“…Evidence of this has been found at the scale of recently diverging, correlated species ( Scholler et al 2019 ). The authors posit that this plasticity of life cycle provides the template for multiple avenues of speciation, not just on the gametothallus host as demonstrated, but hypothetically from the sporothallus host as well ( Scholler et al 2019 ). At a larger scale, Raveneliineae is hypothesized as an initially heteroecious and macrocyclic lineage ( Savile 1989 ) and the earliest diverging families in the suborder, Ochropsoraceae and Tranzscheliaceae , share this strategy, with gametothallus hosts in Ranunculaceae .…”

Section: Discussionmentioning

confidence: 92%

“…3 ). Leucotelium is the sister genus to Tranzschelia ( Scholler et al 2019 ), with which it shares a similar host range and teliospore production from sterile sporogenous cells (Thirumalachar & Cummins 1940, López-Franco & Hennen 1990 ). Many species of Tranzschelia are microcyclic on Ranunculaceae in accordance with Tranzschel’s Law ( Scholler et al 2019 ).…”

Section: Resultsmentioning

confidence: 99%

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A higher-rank classification for rust fungi, with notes on genera

Aime

McTaggart

2021

Fungal Systematics and Evolution

106

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The rust fungi (Pucciniales) with 7000+ species comprise one of the largest orders of Fungi, and one for which taxonomy at all ranks remains problematic. Here we provide a taxonomic framework, based on 16 years of sampling that includes ca. 80 % of accepted genera including type species wherever possible, and three DNA loci used to resolve the deeper nodes of the rust fungus tree of life. Pucciniales are comprised of seven suborders – Araucariomycetineae subord. nov., Melampsorineae, Mikronegeriineae, Raveneliineae subord. nov., Rogerpetersoniineae subord. nov., Skierkineae subord. nov., and Uredinineae – and 18 families – Araucariomycetaceae fam. nov., Coleosporiaceae, Crossopsoraceae fam. nov., Gymnosporangiaceae, Melampsoraceae, Milesinaceae fam. nov., Ochropsoraceae fam. & stat. nov., Phakopsoraceae, Phragmidiaceae, Pileolariaceae, Pucciniaceae, Pucciniastraceae, Raveneliaceae, Rogerpetersoniaceae fam. nov., Skierkaceae fam. & stat. nov., Sphaerophragmiaceae, Tranzscheliaceae fam. & stat. nov., and Zaghouaniaceae. The new genera Araucariomyces (for Aecidium fragiforme and Ae. balansae), Neoolivea (for Olivea tectonae), Rogerpetersonia (for Caeoma torreyae), and Rossmanomyces (for Chrysomyxa monesis, Ch. pryrolae, and Ch. ramischiae) are proposed. Twenty-one new combinations and one new name are introduced for: Angiopsora apoda, Angiopsora chusqueae, Angiopsora paspalicola, Araucariomyces balansae, Araucariomyces fragiformis, Cephalotelium evansii, Cephalotelium neocaledoniense, Cephalotelium xanthophloeae, Ceropsora weirii, Gymnotelium speciosum, Lipocystis acaciae-pennatulae, Neoolivea tectonae, Neophysopella kraunhiae, Phakopsora pipturi, Rogerpetersonia torreyae, Rossmanomyces monesis, Rossmanomyces pryrolae, Rossmanomyces ramischiae, Thekopsora americana, Thekopsora potentillae, Thekopsora pseudoagrimoniae, and Zaghouania notelaeae. Higher ranks are newly defined with consideration of morphology, host range and life cycle. Finally, we discuss the evolutionary and diversification trends within Pucciniales.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

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A higher-rank classification for rust fungi, with notes on genera

Aime

McTaggart

2021

Fungal Systematics and Evolution

106

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“…Like Ochropsora, Tranzschelia (Pucciniales, Uropyxidaceae) is a rust fungus with a putative perennial systemic lifestyle, which elongates the shoot and inhibits flowering of the infected host (Garcı ´a-Guzmán & Wennström, 2001;van Dijk et al, 2021). Tranzschelia is microcyclic and has two spore stages (teliospores and basidiospores) on a single host (A. nemorosa), and can survive as mycelium in the rhizome buds of anemones (Scholler et al, 2019). Tranzschelia causes brown lesions with teliospores on the underside of anemone leaves.…”

Section: Study Systemmentioning

confidence: 99%

The relationship between pathogen life‐history traits and metapopulation dynamics

2022

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Summary Plant pathogen traits, such as transmission mode and overwintering strategy, may have important effects on dispersal and persistence, and drive disease dynamics. Still, we lack insights into how life‐history traits influence spatiotemporal disease dynamics. We adopted a multifaceted approach, combining experimental assays, theory and field surveys, to investigate whether information about two pathogen life‐history traits – infectivity and overwintering strategy – can predict pathogen metapopulation dynamics in natural systems. For this, we focused on four fungal pathogens (two rust fungi, one chytrid fungus and one smut fungus) on the forest herb Anemone nemorosa. Pathogens infecting new plants mostly via spores (the chytrid and smut fungi) had higher patch occupancies and colonization rates than pathogens causing mainly systemic infections and overwintering in the rhizomes (the two rust fungi). Although the rust fungi more often occupied well‐connected plant patches, the chytrid and smut fungi were equally or more common in isolated patches. Host patch size was positively related to patch occupancy and colonization rates for all pathogens. Predicting disease dynamics is crucial for understanding the ecological and evolutionary dynamics of host–pathogen interactions, and to prevent disease outbreaks. Our study shows that combining experiments, theory and field observations is a useful way to predict disease dynamics.

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“…Urediniospores are the clonal stage that produce inoculum to spread one genotype. Different spore stages have been lost and gained, or taken on new roles, usually for sexual reproduction, multiple times in the evolution of rust fungi [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Sexual reproduction is the null hypothesis for life cycles of rust fungi

et al. 2022

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Sexual reproduction, mutation, and reassortment of nuclei increase genotypic diversity in rust fungi. Sexual reproduction is inherent to rust fungi, coupled with their coevolved plant hosts in native pathosystems. Rust fungi are hypothesised to exchange nuclei by somatic hybridisation with an outcome of increased genotypic diversity, independent of sexual reproduction. We provide criteria to demonstrate whether somatic exchange has occurred, including knowledge of parental haplotypes and rejection of fertilisation in normal rust life cycles.

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Repeated formation of correlated species in Tranzschelia (Pucciniales)

Cited by 11 publications

References 34 publications

A higher-rank classification for rust fungi, with notes on genera

A higher-rank classification for rust fungi, with notes on genera

The relationship between pathogen life‐history traits and metapopulation dynamics

Sexual reproduction is the null hypothesis for life cycles of rust fungi

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