New host associations and a novel species for the gall-inducing acacia rust genus Ravenelia in South Africa

Ebinghaus, Malte; Maier, Wolfgang D.; Wingfield, Michael J.; Begerow, Dominik

doi:10.3897/mycokeys.43.25090

Cited by 9 publications

(1 citation statement)

References 23 publications

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“…The formation of telial galls is sometimes induced by infection of Ravenelia species, but not by Cephalotelium species. In contrast, C. evansii , C. macowanianum and C. xanthophloeae induce aecial gall formation in host tissues, which is a trait that appears to be confined to the Cephalotelium lineage ( Ebinghaus et al 2018a , b ). Cephalotelium species infect members of Vachellia ( Caesalpinioideae ) in the Eastern Hemisphere ( Sydow 1921 ).…”

Section: Resultsmentioning

confidence: 99%

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: Resultsmentioning

confidence: 99%

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

Aime

McTaggart

2021

Fungal Systematics and Evolution

106

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The genus Ravenelia (Pucciniales) in South Africa

et al. 2020

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The genus Ravenelia represents the third largest genus of rust fungi and parasitizes a great number of leguminous shrubs and trees, mainly in the subtropics and tropics. Molecular phylogenetic analyses of this genus using nc 28S rDNA and CO3 sequences are presented with a special focus on South African representatives of Ravenelia. Many of the specimens had been collected by us in recent years, mainly from acacia species of the genera Vachellia and Senegalia. Morphological characters were extensively studied using light microscopy and scanning electron microscopy. The analyses resolved several well-supported phylogenetic groups. By linking these groups to their morphology and life cycle characteristics, it was possible to interpret the outcomes in terms of their evolutionary ecology and biogeography. Several characters previously used to define subgeneric groups within Ravenelia were found to be misleading because of assumed convergent evolution. However, host associations, the ability to induce aecial galls as well as the development of two-layered probasidial cells emerged as useful criteria for inferring monophyletic groups. Six novel Ravenelia species were discovered and described. Furthermore, five species represent new reports for South Africa, species descriptions were emended for two taxa, and a new host report emerged for R. inornata. Keywords Pucciniales. Raveneliaceae. Ravenelia moloto sp. nov.. Ravenelia molopa sp. nov.. Ravenelia modjadji sp. nov. Ravenelia doidgeae sp. nov.. Ravenelia spinifera sp. nov.. Ravenelia dumeti sp. nov.. Phylogeny. Diversity study This article is part of the topical collection on Basidiomycote Mycology in honor of Franz Oberwinkler who passed away in March 2018

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Notes, outline and divergence times of Basidiomycota

et al. 2019

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The Basidiomycota constitutes a major phylum of the kingdom Fungi and is second in species numbers to the Ascomycota. The present work provides an overview of all validly published, currently used basidiomycete genera to date in a single document. An outline of all genera of Basidiomycota is provided, which includes 1928 currently used genera names, with 1263 synonyms, which are distributed in 241 families, 68 orders, 18 classes and four subphyla. We provide brief notes for each accepted genus including information on classification, number of accepted species, type species, life mode, habitat, distribution, and sequence information. Furthermore, three phylogenetic analyses with combined LSU, SSU, 5.8s, rpb1, rpb2, and ef1 datasets for the subphyla Agaricomycotina, Pucciniomycotina and Ustilaginomycotina are conducted, respectively. Divergence time estimates are provided to the family level with 632 species from 62 orders, 168 families and 605 genera. Our study indicates that the divergence times of the subphyla in Basidiomycota are 406–430 Mya, classes are 211–383 Mya, and orders are 99–323 Mya, which are largely consistent with previous studies. In this study, all phylogenetically supported families were dated, with the families of Agaricomycotina diverging from 27–178 Mya, Pucciniomycotina from 85–222 Mya, and Ustilaginomycotina from 79–177 Mya. Divergence times as additional criterion in ranking provide additional evidence to resolve taxonomic problems in the Basidiomycota taxonomic system, and also provide a better understanding of their phylogeny and evolution.

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New host associations and a novel species for the gall-inducing acacia rust genus Ravenelia in South Africa

Cited by 9 publications

References 23 publications

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

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

The genus Ravenelia (Pucciniales) in South Africa

Notes, outline and divergence times of Basidiomycota

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