Mary Catherine Aime

Mary Catherine Aime
Purdue University | Purdue · Department of Botany and Plant Pathology

About

478
Publications
199,338
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16,504
Citations
Additional affiliations
August 2007 - August 2012
Louisiana State University
Position
  • Professor (Associate)

Publications

Publications (478)
Article
Full-text available
Four new genera encompassing six new species are described in the Lyophyllaceae ( Agaricales ): the monotypic Australocybe from Australia; the monotypic Phaeotephrocybe from Belize; the monotypic Nigrocarnea from Laos containing the novel conidia-producing species N. radicata and Praearthromyces containing two Asian taxa, the conidia-producing P ....
Preprint
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Erysiphales, otherwise known as the powdery mildews, are an important and speciouse order of fungi that infect plants. Knowedge about the species composition and distribution of these fungi within the U.S. in general, and within Indiana, is limited. In the present study, we examined all historical records and literature, as well as new and historic...
Article
Fungal rhizomorphs, largely from the suborder Marasmiineae, are routinely used in the construction of bird nests in tropical and subtropical forests. Fungal rhizomorphs provide structural benefits that include increased tensile strength and water repellence. Additionally, it has been hypothesized that the incorporation of rhizomorphs into nests may...
Article
Rosa multiflora Thunb. is a perennial shrub native to eastern Asia. It is commonly found on habitat margins, such as forest edges, streams, and roadsides (CABI n.d.). Due to its aromatic flowers, its usefulness in erosion control, and as a living livestock fence, R. multiflora was introduced to North America as an ornamental in the early 1800’s (Hi...
Article
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Coffee leaf rust caused by Hemileia vastatrix is the most devastating diseases of Coffea arabica. This study was under-taken to characterise the genetic diversity and structure of the fungal populations collected from major coffee-growing areas of Ethiopia using 17 Simple Sequence Repeat (SSR) polymorphic markers. Observed alleles per locus ranged...
Article
Frosty pod rot disease of cacao (FPR), caused by the fungus Moniliophthora roreri, has severely impacted the production of cocoa in Latin America since its discovery. Prior to the 1950s, FPR was known only from Colombia and Ecuador. However, beginning in the 1970s, its geographical range has dramatically expanded throughout most of the chocolate‐pr...
Article
The documentation of rust fungi in tropical Africa is very incomplete. For West Africa, 332 species of rust fungi (Pucciniales, Basidiomycota) are recorded, including only six species from Benin. By a recent survey of rust fungi in Benin, 22 specimens representing 11 species of Pucciniales were found. These species were identified based on morpholo...
Article
Rumex crispus L. (curled dock) is a noxious weed in both grasslands (mainly pastures) and arable lands, but is also an early colonizer of many disturbed areas in lowland and upland regions. Rumex crispus is of agricultural significance because it competes with sown or native pasture and crops species and occupies areas that could be utilized by mor...
Article
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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...
Article
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Polydiscidium is an enigmatic, monotypic, and rarely reported genus of Ascomycota of uncertain placement. The morphologically unique Polydiscidium martynii grows on dead wood and forms compound ascomata composed of thick, black, gelatinous somatic tissue that branches out from a common base. Multiple apothecia are located on the branches, mostly to...
Article
Bog hemp (Boehmeria cylindrica) is a perennial herbaceous plant widely distributed across the Americas. In September of 2016, a rust disease was observed on leaves of bog hemp in Florida, USA. The specimen was sent to the Arthur Fungarium at Purdue University for further identification and long-term deposit. Based on morphological characteristics a...
Article
Peru is the second largest producer of organic cocoa and one of the most important suppliers of fine aroma cocoa beans in the world (Sánchez et al. 2019). The fine aroma cocoa produced by smallholder farmers in the Bagua and Utcubamba Provinces, Amazonas Department, under the name of “Cacao Amazonas Peru”, is protected by the Peruvian appellation r...
Article
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Hesperomyces virescens (Ascomycota, Laboulbeniales), a fungal ectoparasite, is thus far reported on Harmonia axyridis from five continents: North and South America, Europe, Africa, and Asia. While it is known that He. virescens can cause mortality of Ha. axyridis under laboratory conditions, the role of biotic and abiotic factors in influencing the...
Article
Rust fungi are important plant pathogens and have been extensively studied on crops and other host plants worldwide. This study describes the heterecious life cycle of a rust fungus on Digitaria eriantha (finger grass) and the Solanum species S. lichtensteinii (large yellow bitter apple), S. campylacanthum (bitter apple), and S. melongena (eggplant...
Article
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Shifts in food microbiomes may impact the establishment of human pathogens, such as virulent lineages of Escherichia coli, and thus are important to investigate. Foods that are often consumed raw, such as lettuce, are particularly susceptible to such outbreaks. We have previously found that an undescribed Sporobolomyces yeast is an abundant compone...
Article
Five species of Crepidotus (Agaricales, Crepidotaceae) were documented during our ongoing efforts to characterize the fungi of Kerala State, India. Of these, three species are new to science, while C. roseus and C. alabamensis represent new Asian and Indian records, respectively. Herein, we fully describe and illustrate Crepidotus exiguus, C. flavo...
Article
Here, we report the draft genome sequence of Pseudotulostoma volvatum , an unusual ectomycorrhizal fungus in the “mold” order Eurotiales (Ascomycota, Pezizomycotina). The assembled genome is 60.4 Mbp and contains an estimated 5,492 genes. Compared with closely related species, the P. volvatum genome is depauperate in secondary metabolite gene clust...
Article
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Hawaii has long been one of the last coffee-producing regions of the world free of coffee leaf rust (CLR) disease, which is caused by the biotrophic fungus Hemileia vastatrix. However, CLR was detected in coffee farms and feral coffee on the island of Maui in February 2020 and subsequently on other islands of the Hawaiian archipelago. The source of...
Article
In Michigan, corn (Zea mays) is grown on 2.35 million acres with an annual production valued at $1.36 billion dollars (USDA-NASS). Southern rust is caused by the obligate biotrophic fungus Puccinia polysora Underw. and is often ranked in the top five most destructive corn diseases in the southern U.S. (Mueller et al. 2020). Yield losses due to sout...
Article
Helianthus verticillatus, the whorled sunflower, is an endangered species found only in the southern United States (Trigiano et al. 2021) that is being developed for ornamental uses. This sunflower species requires little to no maintenance, produces spectacular floral displays from September into October, and attracts numerous potential pollinators...
Article
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Laboulbeniales (Fungi, Ascomycota) are microscopic ectoparasites of arthropods, primarily insects. Thus far, of about 2,325 described species of Laboulbeniales, 96 are reported from hosts in the order Hemiptera, including 15 species of the large genus Laboulbenia. Here, we describe one new species of Laboulbenia from Tachygerris surinamensis (Hemip...
Poster
Full-text available
During a study of specimens of graminicolous rust fungi from USA deposited in the Arthur Fungarium (PUR) two previously undescribed species infecting Melica spp. were encountered. These are described and compared to similar rust fungi on Melica from around the world. ABBASI, M., Aime. M.C.A. 2015. Two new Puccinia species on Melica (Poaceae) from U...
Poster
Full-text available
TYPE specimens are fundamental and unique material that determine the correct application of scientific names. As a result of studying the TYPE specimens of common Melampsora species on Salix spp. in the Arthur Herbarium (PUR) at Purdue University, a new species concept for M. paradoxa was derived. This species has a much narrower distribution than...
Poster
Full-text available
ABBASI, M., Aime. M.C.A., Creswell, T. and Ruhl, G.E. 2015. Contribution to the rust mycobiota of Indiana. 2015 Poster Session of Botany and Pant Pathology. November 17, Purdue University. The Beck Agricultural Center
Article
Rust fungi (Pucciniales, Basidiomycota) are obligate biotrophic pathogens that cause rust diseases in plants, inflicting severe damage to agricultural crops. Pucciniales possess the most complex life cycles known in fungi. These include an alternation of generations, the development of up to five different sporulating stages, and, for many species,...
Article
Full-text available
Hemileia vastatrix is the most important fungal pathogen of coffee and the causal agent of recurrent disease epidemics that have invaded nearly every coffee-growing region in the world. The development of coffee varieties resistant to H. vastatrix requires fundamental understanding of the biology of the fungus. However, the complete life cycle of H...
Article
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Neotropical cloud forests are biologically and ecologically unique and represent a largely untapped reservoir of species new to science, particularly for understudied groups like those within the Kingdom Fungi. We conducted a three-week fungal survey within Cusuco National Park, Honduras and made 116 collections of fungi in forest habitats at 1287–...
Article
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Ectomycorrhizal tree species may benefit from positive plant-soil feedbacks, where soil environments near adult trees enhance conspecific seedling growth and survival. In tropical monodominant forests, seedling survival is particularly important, as seedling banks help maintain stand-level dominance over generations. Positive plant-soil feedbacks m...
Article
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In this perspective, we draw on recent scientific research on the coffee leaf rust (CLR) epidemic that severely impacted several countries across Latin America and the Caribbean over the last decade, to explore how the socioeconomic impacts from COVID-19 could lead to the reemergence of another rust epidemic. We describe how past CLR outbreaks have...
Article
Full-text available
Sporobolomyces lactosus is a pink yeast-like fungus that is not congeneric with other members of Sporobolomyces (Basidiomycota, Microbotryomycetes, Sporidiobolales). During our ongoing studies of pink yeasts we determined that S. lactosus was most closely related to Pseudeurotium zonatum (Ascomycota, Leotiomycetes, Thelebolales). A molecular phylog...
Article
Nitrogen (N) fixation is a driving force for the formation of symbiotic associations between N2-fixing bacteria and eukaryotes.¹ Limited examples of these associations are known in fungi, and none with sexual structures of non-lichenized species.2, 3, 4, 5, 6 The basidiomycete Guyanagaster necrorhizus is a sequestrate fungus endemic to the Guiana S...
Article
Full-text available
In this perspective, we draw on recent scientific research on the coffee leaf rust (CLR) epidemic that severely impacted several countries across Latin America and the Caribbean over the last decade, to explore how the socioeconomic impacts from COVID-19 could lead to the reemergence of another rust epidemic. We describe how past CLR outbreaks have...
Article
Full-text available
Here we review how evolving species concepts have been applied to understand yeast diversity. Initially, a phenotypic species concept was utilized taking into consideration morphological aspects of colonies and cells, and growth profiles. Later the biological species concept was added, which applied data from mating experiments. Biophysical measure...
Article
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It is now a decade since The International Commission on the Taxonomy of Fungi (ICTF) produced an overview of requirements and best practices for describing a new fungal species. In the meantime the International Code of Nomenclature for algae, fungi, and plants (ICNafp) has changed from its former name (the International Code of Botanical Nomencla...
Article
Fungal dimorphism is a phenomenon by which a fungus can grow both as a yeast form and a hyphal form. It is frequently related to pathogenicity as different growth forms are more suitable fordifferent functions during a life cycle. Among dimorphic plant pathogens, the corn smut fungus Ustilago maydis serves as a model organism to understand fungal d...
Article
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Romaine lettuce (Lactuca sativa) is an important staple of American agriculture. Unlike many vegetables, romaine lettuce is typically consumed raw. Phylloplane microbes occur naturally on plant leaves; consumption of uncooked leaves includes consumption of phylloplane microbes. Despite this fact, the microbes that naturally occur on produce such as...
Article
The identification and proper naming of microfungi, in particular plant, animal and human pathogens, remains challenging. Molecular identification is becoming the default approach for many fungal groups, and environmental metabarcoding is contributing an increasing amount of sequence data documenting fungal diversity on a global scale. This include...
Article
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A new ectomycorrhizal species was discovered during the first survey of fungal diversity at Brijuni National Park (Croatia), which consists of 14 islands and islets. The National Park is located in the Mediterranean Biogeographical Region, a prominent climate change hot-spot. Inocybe brijunica sp. nov., from sect. Hysterices (Agaricales, Inocybacea...
Article
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Studies of Trochila (Leotiomycetes, Helotiales, Cenangiaceae) are scarce. Here, we describe two new species based on molecular phylogenetic data and morphology. Trochila bostonensis was collected at the Boston Harbor Islands National Recreation Area, Massachusetts. It was found on the stem of Asclepias syriaca, representing the first report of any...
Article
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There were errors in the name of author László G. Nagy and in affiliation no. 31 in the original publication. The original article has been corrected.
Article
Using the correct name for phytopathogenic fungi and oomycetes is essential for communicating knowledge about species and their biology, control, and quarantine as well as for trade and research purposes. However, many plant pathogenic fungi are pleomorphic, meaning they produce different asexual (anamorph) and sexual (teleomorph) morphs in their l...
Article
Full-text available
The corn smut fungus Ustilago maydis serves as a model species for studying fungal dimorphism and its role in phytopathogenic development. The pathogen has two growth phases: a saprobic yeast phase and a pathogenic filamentous phase. Dimorphic transition of U. maydis involves complex processes of signal perception, mating, and cellular reprogrammin...
Article
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Parasitism is one of the most diverse and abundant modes of life, and of great ecological and evolutionary importance. Notwithstanding, large groups of parasites remain relatively understudied. One particularly unique form of parasitism is hyperparasitism, where a parasite is parasitized itself. Bats (Chiroptera) may be parasitized by bat flies (Di...
Article
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This paper describes and illustrates a new species of Laboulbeniales (Ascomycota, Laboulbeniomycetes) recovered from Mastoptera guimaraesi bat flies (Diptera, Streblidae) in Ecuador and Panama. Bat fly-associated Laboulbeniales are still unexplored in the Neotropics, with only four described species of Gloeandromyces and one species of Nycteromyces...
Article
Full-text available
Four epitypes and three new species of Amanita (Amanitaceae, Agaricales, Agaricomycetes, Basidiomycota) are described from Guineo-Congolian rainforests of Cameroon. Amanita echinulata, A. fulvopulverulenta, A. robusta, and A. bingensis are epitypified based on collections that are the first since the species were described nearly a century ago. Mor...
Data
Hi anyone who is interested. This alignment is a great starting point to add your LSU and CO3 sequences for placement of genera and families. (Some of the names in the alignment will need a careful eye because we changed them later on). (And you can add SSU as well, it's just not as good as LSU and CO3 in my opinion).
Article
Full-text available
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...
Article
Full-text available
Harmonia axyridis is an invasive alien ladybird in North America and Europe. Studies show that multiple natural enemies are using Ha. axyridis as a new host. However, thus far, no research has been undertaken to study the effects of simultaneous infection by multiple natural enemies on Ha. axyridis. We hypothesized that high thallus densities of th...
Article
Full-text available
The cryptic lifestyle of most fungi necessitates molecular identiication of the guild in environmental studies. Over the past decades, rapid development and afordability of molecular tools have tremendously improved insights of the fungal diversity in all ecosystems and habitats. Yet, in spite of the progress of molecular methods, knowledge about f...
Article
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Fungal Systematics and Evolution (FUSE) is one of the journal series to address the “fusion” between morphological data and molecular phylogenetic data and to describe new fungal taxa and interesting observations. This paper is the 6th contribution in the FUSE series—presenting one new genus, twelve new species, twelve new country records, and thre...
Article
Pseudoflower formation is arguably the rarest outcome of a plant-fungus interaction. Here we report on a novel putative floral mimicry system in which the pseudoflowers are composed entirely of fungal tissues in contrast to modified leaves documented in previous mimicry systems. Pseudoflowers on two perennial Xyris species (yellow-eyed grass, X. se...
Article
A severe rust infection was observed on leaves of Tulipa iliensis in the desert regions of the Tianshan Mountains in China. The pathogen is similar to P. tulipae, a microcyclic rust of several Tulipa species, but differs in larger teliospores, and in the production of spermogonia and aecia. Herein, we describe Puccinia xinyuanensis sp. nov., an aut...
Article
In tropical and subtropical rainforests, vegetative fungal rhizomorphs from the Marasmiineae are routinely used as construction material in bird nests. Because rhizomorphs seldom produce mushrooms within nests, the fungal species involved remain largely unknown. In turn, this limitation has prevented us from resolving broader questions such as whet...
Article
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Several interesting Ustilaginaceae yeast morphs were isolated during ongoing surveys of phylloplane-associated fungi in Louisiana (USA) and Guyana. Here we describe Farysia magdalena sp. nov., a phylloplane yeast isolated in southern Louisiana, based on phylogenetic analyses, assimilation profiles and morphological characters, and discuss the yeast...
Article
Cacao is a commodity crop from the tropics cultivated by about six million smallholder farmers. The tree, Theobroma cacao, originated in the Upper Amazon where it was domesticated ca. 5450–5300 B.P. From this center of origin, cacao was dispersed and cultivated in Mesoamerica as early as 3800–3000 B.P. After the European conquest of the Americas (t...
Article
Full-text available
True fungi (Fungi) and fungus-like organisms (e.g. Mycetozoa, Oomycota) constitute the second largest group of organisms based on global richness estimates, with around 3 million predicted species. Compared to plants and animals, fungi have simple body plans with often morphologically and ecologically obscure structures. This poses challenges for a...
Article
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Our understanding of the systematics of red yeasts has greatly improved with the availability of sequence data and it is now clear that the majority of these fungi belong to three different classes of Pucciniomycotina (Basidiomycota): Agaricostilbomycetes, Cystobasidiomycetes, and Microbotryomycetes. Despite improvements in phylogenetic placement,...
Article
Rust disease was observed on populations of Suaeda californica near Morro Bay, California. The pathogen was identified as a species of Uromyces based on teliospore and urediniospore morphology and nuc 28S rDNA sequence analysis. The isolate was compared with previously described species of Uromyces that infect members of Chenopodiaceae, prompting a...
Article
Theobroma cacao (chocolate tree) is currently under serious threat from thread blight disease (TBD), which has been attributed to the causal agent Marasmiellus scandens in other regions of the world. TBD in Ghana has similar symptomology but variable signs. This study sought to determine whether TBD in Ghana was caused by a single agent and whether...
Preprint
Full-text available
Harmonia axyridis is an invasive alien ladybird in North America and Europe. Studies show that multiple natural enemies are using Ha. axyridis as a new host. However, thus far, no research has been undertaken to study the effects of simultaneous infections of multiple natural enemies on Ha. axyridis. We hypothesized that high thallus densities of t...
Article
Temperate forests ecosystems are threatened by declines and diseases worldwide. Causes have been investigated during the last decades allowing, in some cases, to relate such deterioration to climate change or pathogens but, in many cases, causes have not yet been elucidated. In recent decades, a phenomenon of grouped mortality, whose etiology remai...
Article
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The crinipelloid genera Crinipellis and Moniliophthora (Agaricales, Marasmiaceae) are characterized by basidiomes that produce long, dextrinoid, hair-like elements on the pileus surface. Historically, most species are believed to be saprotrophic or, rarely, parasitic on plant hosts. The primary morphological diagnostic characters that separate Crin...