Are the microcyclic rust species Puccinia melampodii and Puccinia xanthii conspecific?

Seier, M. K.; Morin, L.; Merwe, Marlien van der; Evans, H. C.; Romero, A.

doi:10.1016/j.mycres.2009.08.009

Cited by 19 publications

(17 citation statements)

References 24 publications

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“…Molecular diagnostic tools have been developed for some species of Puccinia based on the ITS region of rDNA, e.g., P. coronata (Beirn et al 2011;Pfunder et al 2001), P. kuehnii and P. psidii (Langrell et al 2008). The ITS region has successfully distinguished phylogenetic species in Uromyces (Barilli et al 2011) and it was used in combination with TEF to resolve the taxonomy of P. melampodii (Seier et al 2009). However, the ITS region was polymorphic in Puccinia lagenophorae (Littlefield et al 2005;Scholler et al 2011), and Morin et al (2009) discovered a paralagous copy of the ITS region, which may have resulted from a hybridization event.…”

Section: Species Identification and Numbersmentioning

confidence: 99%

“…Protein coding genes such as beta-tubulin ; Van der Merwe et al 2007 and elongation factor (TEF) (Seier et al 2009; Van der Merwe et al 2007) were successfully used at the family, genus and species level in rust fungi, although beta-tubulin required cloning rather than direct sequencing of PCR product. Liu et al (2013) included ITS, beta-tubulin, ribosomal polymerase subunit 2 (RPB2) and cytochrome c oxidase subunit 1 (COI) in a systematic study to resolve the P. coronata species complex.…”

Section: Molecular Phylogenymentioning

confidence: 99%

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One stop shop: backbones trees for important phytopathogenic genera: I (2014)

et al. 2014

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Many fungi are pathogenic on plants and cause significant damage in agriculture and forestry. They are also part of the natural ecosystem and may play a role in regulating plant numbers/density. Morphological identification and analysis of plant pathogenic fungi, while important, is often hampered by the scarcity of discriminatory taxonomic characters and the endophytic or inconspicuous nature of these fungi. Molecular (DNA sequence) data for plant pathogenic fungi have emerged as key information for diagnostic and classification studies, although hampered in part by non-standard laboratory practices and analytical methods. To facilitate current and future research, this study provides phylogenetic synopses for 25 groups of plant pathogenic fungi in the Ascomycota, Basidiomycota, Mucormycotina (Fungi), and Oomycota, using recent molecular data, up-to-date names, and the latest taxonomic insights. Lineagespecific laboratory protocols together with advice on their application, as well as general observations, are also provided. We hope to maintain updated backbone trees of these fungal lineages over time and to publish them jointly as new data emerge. Researchers of plant pathogenic fungi not covered by the present study are invited to join this future effort. Bipolaris, Botryosphaeriaceae,

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Section: Species Identification and Numbersmentioning

confidence: 99%

Section: Molecular Phylogenymentioning

confidence: 99%

One stop shop: backbones trees for important phytopathogenic genera: I (2014)

et al. 2014

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“…Consequently, molecular studies have been used to resolve phylogenetic relationships between morphologically similar taxa of rust and smut fungi. For example, the host-specificity, morphology and DNA sequence data of two microcyclic rusts species Puccinia melampodii and P. xanthii (Seier et al 2009) lead to the establishment of a new morphospecies, P. xanthii var. parthenii-hysterophorae, to accommodate records of P. melampodii associated with the host Parthenium hysterophus.…”

Section: Evolution Of Species Criteria In Rust and Smut Fungimentioning

confidence: 99%

The evolution of species concepts and species recognition criteria in plant pathogenic fungi

et al. 2011

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In this paper, we review historical and contemporary species concepts and species recognition criteria for plant pathogenic fungi. Previous incongruent and unstable classification based on subjective and changing criteria have led to some confusion, especially amongst plant pathologists. The goal of systematics is to provide an informative and robust framework that stands the test of time. The taxonomic histories of Cercospora, Colletotrichum, Fusarium, as well as the rust and smut fungi, are used as examples, to show how concepts and criteria used to delimit and recognize species have changed. Through these examples we compare the Genealogical Concordance Phylogenetic Species Recognition, an extension of the Phylogenetic Species Criterion, with other species recognition criteria and show that it provides a better discrimination for delimiting species. A rapidly increasing number of cryptic species are being discovered amongst plant pathogenic fungi using the Genealogical Concordance Phylogenetic Species Recognition, and it is important to determine their host range, the severity of diseases they cause and their biosecurity significance. With rapidly expanding global trade it has become imperative that we develop effective and reliable protocols to detect these previously unrecognized pathogens.

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“…One may therefore hypothesize initially that rust fungi with a reportedly broad host range could comprise unresolved aggregates of species with narrower host ranges. On the other hand, there are examples that show that rusts originally described as separate species may in fact belong to a few plurivorous species like Puccinia lagenophorae, P. lantanae, P. xanthii, and P. psidii (Laundon 1963;Pérez et al 2010;Scholler et al 2011;Seier et al 2009). …”

Section: Insufficient Datamentioning

confidence: 99%

Species richness, taxonomy and peculiarities of the neotropical rust fungi: are they more diverse in the Neotropics?

Berndt

2012

Biodivers Conserv

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The species richness of rust fungi (Pucciniales or Uredinales) in the neotropics is reviewed. Species numbers are presented for all neotropical countries and rust-plantratios calculated. It is discussed whether the ratio for a given region can be explained by the species richness of vascular plants alone or whether it is caused by additional factors. In the first case, ratios should apply globally and vary only slightly; in the second case, more diverging ratios are expected. Observed ratios ranged between 1:16 and 1:124 in the neotropics. The large differences are certainly influenced by unequal levels of investigation, rendering interpretation difficult. Differences seem also to be influenced by the taxonomic composition of floras regarding the percentage of host families or genera bearing different numbers of rust species. This indicates that rust species richness is not driven solely by plant species richness. Ratios calculated for Switzerland, Austria and Japan are distinctly higher than for the neotropics indicating that certain temperate regions are proportionally richer in rust fungi than the neotropics. Uredinial states and short-cycled rust species prevail in the neotropics. The preponderance of uredinial states may be due to the heterogeneous spatial composition of certain vegetation types in the wet tropics. Shortcycled rusts may be adapted to a pronounced seasonality that can be encountered in many drier neotropical biomes. Future research needs to fill our knowledge gaps on the taxonomy and ecology of neotropical rust fungi are discussed.

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Are the microcyclic rust species Puccinia melampodii and Puccinia xanthii conspecific?

Cited by 19 publications

References 24 publications

One stop shop: backbones trees for important phytopathogenic genera: I (2014)

One stop shop: backbones trees for important phytopathogenic genera: I (2014)

The evolution of species concepts and species recognition criteria in plant pathogenic fungi

Species richness, taxonomy and peculiarities of the neotropical rust fungi: are they more diverse in the Neotropics?

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