Peter M. Letcher

ORCID: 0000-0003-4455-9992
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About
Contact & Profiles
Research Areas
  • Protist diversity and phylogeny
  • Mycorrhizal Fungi and Plant Interactions
  • Plant Pathogens and Fungal Diseases
  • Microbial Community Ecology and Physiology
  • Genomics and Phylogenetic Studies
  • Plant Pathogens and Resistance
  • Yeasts and Rust Fungi Studies
  • Plant Disease Resistance and Genetics
  • Parasitic Infections and Diagnostics
  • Lichen and fungal ecology
  • Marine and coastal plant biology
  • Nematode management and characterization studies
  • Fungal Biology and Applications
  • Mollusks and Parasites Studies
  • Environmental DNA in Biodiversity Studies
  • Peatlands and Wetlands Ecology
  • Plant and Fungal Interactions Research
  • Diatoms and Algae Research
  • Coastal wetland ecosystem dynamics
  • Biocrusts and Microbial Ecology
  • Parasite Biology and Host Interactions
  • Plant Reproductive Biology
  • Plant Parasitism and Resistance
  • Legume Nitrogen Fixing Symbiosis
  • Fungal and yeast genetics research

University of Alabama
2012-2022

University of Maine
2005-2012

Tuscaloosa City Schools
2012

Conrad L. Schoch Barbara Robbertse Vincent Robert Duong Vu Gianluigi Cardinali and 95 more László Irinyi Wieland Meyer R. Henrik Nilsson Karen W. Hughes Andrew N. Miller Paul M. Kirk Kessy Abarenkov M. Catherine Aime Hiran A. Ariyawansa Martin I. Bidartondo T. Boekhout Bart Buyck Qing Cai Jie Chen Ana Crespo P.W. Crous Ulrike Damm Z. Wilhelm de Beer Bryn T. M. Dentinger Pradeep K. Divakar Margarita Dueñas Nicolas Feau K. Fliegerová Miguel A. Garcı́a Zhenyu Ge Gareth Griffith J.Z. Groenewald Marizeth Groenewald M. Grube Marieka Gryzenhout C. Gueidan Liang‐Dong Guo Sarah Hambleton Richard C. Hamelin K. Hansen Valérie Hofstetter Seung‐Beom Hong Jos Houbraken Kevin D. Hyde Patrik Inderbitzin Peter R. Johnston Samantha C. Karunarathna Urmas Kõljalg Gábor M. Kovács Ekaphan Kraichak Krisztina Krizsán Cletus P. Kurtzman Karl‐Henrik Larsson Steven W. Leavitt Peter M. Letcher Kare Liimatainen Jian‐Kui Liu D. J. Lodge Janet Jennifer Luangsa-ard H. Thorsten Lumbsch Sajeewa S. N. Maharachchikumbura Dimuthu S. Manamgoda María P. Martín Andrew M. Minnis Jean Marc Moncalvo Giuseppina Mulè Karen K. Nakasone Tuula Niskanen Ibai Olariaga Tamás Papp Tamás Petkovits Raquel Pino‐Bodas Martha J. Powell Huzefa A. Raja Dirk Redecker Jullie M. Sarmiento-Ramírez Keith A. Seifert Bhushan Shrestha Soili Stenroos J. Benjamin Stielow Sung‐Oui Suh Kazuaki Tanaka Leho Tedersoo Ireneia Melo Dhanushka Udayanga Wendy A. Untereiner Javier Diéguez‐Uribeondo Krishna V. Subbarao Csaba Vágvölgyi Cobus M. Visagie Kerstin Voigt D. M. Walker Bevan Weir Michael Weiß Nalin N. Wijayawardene Michael J. Wingfield Min Xu Zuoren Yang Ning Zhang Wen-Ying Zhuang

DNA phylogenetic comparisons have shown that morphology-based species recognition often underestimates fungal diversity. Therefore, the need for accurate sequence data, tied to both correct taxonomic names and clearly annotated specimen has never been greater. Furthermore, growing number of molecular ecology microbiome projects using high-throughput sequencing require fast effective methods en masse assignments. In this article, we focus on selecting re-annotating a set marker reference...

10.1093/database/bau061 article EN cc-by Database 2014-06-30

Chytridiomycota (chytrids) is the only phylum of true Fungi that reproduces with motile spores (zoospores). Chytrids currently are classified into five orders based on habitat, zoospore characters and life cycles. In this paper we estimate phylogeny chytrids DNA sequences from ribosomal RNA operon (18S+ 5.8S+ 28S subunits). To our surprise morphologically reduced parasites Olpidium Rozella comprise two entirely new, separate, lineages fungal tree. brassicae groups among Zygomycota, spp....

10.3852/mycologia.98.6.860 article EN Mycologia 2006-11-01

Chytridiomycota (chytrids) is the only phylum of true Fungi that reproduces with motile spores (zoospores). Chytrids currently are classified into five orders based on habitat, zoospore characters and life cycles. In this paper we estimate phylogeny chytrids DNA sequences from ribosomal RNA operon (18S+ 5.8S+ 28S subunits). To our surprise morphologically reduced parasites Olpidium Rozella comprise two entirely new, separate, lineages fungal tree. brassicae groups among Zygomycota, spp....

10.1080/15572536.2006.11832616 article EN Mycologia 2006-11-01

Mass culture of algae for the production biofuels is a developing technology designed to offset depletion fossil fuel reserves. However, large scale in open ponds can be challenging because incidences infestation with algal parasites. Without knowledge identity specific parasite and how control these pests, algal-based biofuel will limited. We have characterized eukaryotic Scenedesmus dimorphus growing outdoor used production. demonstrated that as genomic DNA FD01 increases, concentration S....

10.1371/journal.pone.0056232 article EN cc-by PLoS ONE 2013-02-20

AbstractChytridium olla A. Braun, the first described chytrid and an obligate algal parasite, is type for genus thus foundation of family Chytridiaceae, order Chytridiales, class Chytridiomycetes phylum Chytridiomycota. Chytridium was isolated in coculture with its host, Oedogonium capilliforme. DNA extracted from coculture, 18S, 28S ITS1-5.8S-ITS2 rDNA were amplified universal fungal primers. Free swimming zoospores mature sporangia examined electron microscopy. Molecular analyses placed C....

10.3852/10-001 article EN Mycologia 2011-01-01

Rozella is a genus of endoparasites broad range hosts. Most species are known by their morphology and host specificity, while only three have been examined ultrastructurally had portions genome sequenced. Determined in molecular phylogenies to be the earliest diverging lineage kingdom Fungi, currently nests among an abundance environmental sequences phylum Cryptomycota, superphylum Opisthosporidia. Here we briefly summarize history Rozella, provide descriptions all species, include key Rozella.

10.5598/imafungus.2018.09.02.09 article EN cc-by IMA Fungus 2018-11-17

Order Spizellomycetales was delineated based on a unique suite of zoospore ultrastructural characters and currently includes five genera 14 validly published species, all which have propensity for soil habitats. We generated DNA sequences from small (SSU), large (LSU) 5.8S ribosomal subunit genes to assess the monophyly species in this order. The 53 cultures analyzed included isolates described were based, plus other spizellomycetalean cultures. Phylogenetic placement these chytrids explored...

10.3852/09-120 article EN Mycologia 2010-05-01

Microalgae used in the production of biofuels represents an alternative to fossil fuels. One problem algae for is attacks by algal parasitoids that can cause population crashes when are cultivated outdoor ponds (Greenwell et al. 2010 GreenwellHLaurensLShieldsRLovittRFlynnK. 2010. Placing microalgae on priority list: a review technological challenges. J Roy Soc Interface 7:703–726, doi:10.1098%2Frsif.2009.0322[Crossref], [Web Science ®] , [Google Scholar]). Integrated solutions being sought...

10.3852/14-064 article EN Mycologia 2015-05-01

AbstractChytridiales is an order of zoosporic fungi currently comprising species representing 19 genera. Although morphologically and genetically diverse, these taxa have in common a zoospore with suite ultrastructural characters unique among Chytridiomycota. However, multiple states been reported for almost every character that defines the Chytridiales zoospore. Two types recognized, each corresponding to family. Here we examine ultrastructure 52 isolates assess six hypothesize evolutionary...

10.3852/13-219 article EN Mycologia 2014-05-01

Aphelids are parasitoids of various algae and diatoms, in a recent classification contained family Aphelidiaceae, phylum Aphelidiomycota, kingdom Fungi. Family Aphelidiaceae (the only the phylum) is composed four genera: Aphelidium, Paraphelidium, Amoeboaphelidium, Pseudaphelidium. All species known morphologically, most have been illustrated. Few examined ultrastructurally, even fewer sequenced for molecular comparisons. Recent studies phylogenetics revealed an abundance related...

10.1186/s43008-019-0005-7 article EN cc-by IMA Fungus 2019-06-07

We formed the Collection of Zoosporic Eufungi at University Michigan (CZEUM) in 2018 as a cryopreserved fungal collection consolidating Maine Culture (UMCC, or JEL), Alabama Chytrid (UACCC), and additional zoosporic eufungal accessions. The CZEUM is established community resource containing 1045 cultures Chytridiomycota, Monoblepharidomycota, Blastocladiomycota, with 52 being ex-type strains. molecularly characterized 431 by amplifying majority rDNA operon single reaction, yielding an...

10.1186/s43008-020-00041-z article EN cc-by IMA Fungus 2020-10-05
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