scispace - formally typeset
Search or ask a question
Journal ArticleDOI

Phylogenetic and morphological appraisal of Leptosphaeria italica sp nov (Leptosphaeriaceae, Pleosporales) from Italy

01 Jan 2015-Mycosphere (Mushroom Research Foundation)-Vol. 6, Iss: 5, pp 634-642
TL;DR: A fungal species with bitunicate asci and ellipsoid to fusiform ascospores collected from a dead branch of Rhamnus alpinus in Italy is introduced as a new species that morphologically resembles Leptosphaeria sensu stricto.
Abstract: A fungal species with bitunicate asci and ellipsoid to fusiform ascospores was collected from a dead branch of Rhamnus alpinus in Italy. The new taxon morphologically resembles Leptosphaeria. Maximum likelihood (ML) and Bayesian analyses of a combined LSU and ITS sequence dataset confirm its placement in Leptosphaeria sensu stricto. The new taxon is distinct from other species based on morphology and phylogeny and is thus introduced as a new species, viz. L. italica. The new species is compared with other Leptosphaeria species and a comprehensive description and micrographs are provided.

Content maybe subject to copyright    Report

Citations
More filters
Journal ArticleDOI
Guo Jie Li1, Kevin D. Hyde2, Kevin D. Hyde3, Kevin D. Hyde4  +161 moreInstitutions (45)
TL;DR: This paper is a compilation of notes on 142 fungal taxa, including five new families, 20 new genera, and 100 new species, representing a wide taxonomic and geographic range.
Abstract: Notes on 113 fungal taxa are compiled in this paper, including 11 new genera, 89 new species, one new subspecies, three new combinations and seven reference specimens. A wide geographic and taxonomic range of fungal taxa are detailed. In the Ascomycota the new genera Angustospora (Testudinaceae), Camporesia (Xylariaceae), Clematidis, Crassiparies (Pleosporales genera incertae sedis), Farasanispora, Longiostiolum (Pleosporales genera incertae sedis), Multilocularia (Parabambusicolaceae), Neophaeocryptopus (Dothideaceae), Parameliola (Pleosporales genera incertae sedis), and Towyspora (Lentitheciaceae) are introduced. Newly introduced species are Angustospora nilensis, Aniptodera aquibella, Annulohypoxylon albidiscum, Astrocystis thailandica, Camporesia sambuci, Clematidis italica, Colletotrichum menispermi, C. quinquefoliae, Comoclathris pimpinellae, Crassiparies quadrisporus, Cytospora salicicola, Diatrype thailandica, Dothiorella rhamni, Durotheca macrostroma, Farasanispora avicenniae, Halorosellinia rhizophorae, Humicola koreana, Hypoxylon lilloi, Kirschsteiniothelia tectonae, Lindgomyces okinawaensis, Longiostiolum tectonae, Lophiostoma pseudoarmatisporum, Moelleriella phukhiaoensis, M. pongdueatensis, Mucoharknessia anthoxanthi, Multilocularia bambusae, Multiseptospora thysanolaenae, Neophaeocryptopus cytisi, Ocellularia arachchigei, O. ratnapurensis, Ochronectria thailandica, Ophiocordyceps karstii, Parameliola acaciae, P. dimocarpi, Parastagonospora cumpignensis, Pseudodidymosphaeria phlei, Polyplosphaeria thailandica, Pseudolachnella brevifusiformis, Psiloglonium macrosporum, Rhabdodiscus albodenticulatus, Rosellinia chiangmaiensis, Saccothecium rubi, Seimatosporium pseudocornii, S. pseudorosae, Sigarispora ononidis and Towyspora aestuari. New combinations are provided for Eutiarosporella dactylidis (sexual morph described and illustrated) and Pseudocamarosporium pini. Descriptions, illustrations and / or reference specimens are designated for Aposphaeria corallinolutea, Cryptovalsa ampelina, Dothiorella vidmadera, Ophiocordyceps formosana, Petrakia echinata, Phragmoporthe conformis and Pseudocamarosporium pini. The new species of Basidiomycota are Agaricus coccyginus, A. luteofibrillosus, Amanita atrobrunnea, A. digitosa, A. gleocystidiosa, A. pyriformis, A. strobilipes, Bondarzewia tibetica, Cortinarius albosericeus, C. badioflavidus, C. dentigratus, C. duboisensis, C. fragrantissimus, C. roseobasilis, C. vinaceobrunneus, C. vinaceogrisescens, C. wahkiacus, Cyanoboletus hymenoglutinosus, Fomitiporia atlantica, F. subtilissima, Ganoderma wuzhishanensis, Inonotus shoreicola, Lactifluus armeniacus, L. ramipilosus, Leccinum indoaurantiacum, Musumecia alpina, M. sardoa, Russula amethystina subp. tengii and R. wangii are introduced. Descriptions, illustrations, notes and / or reference specimens are designated for Clarkeinda trachodes, Dentocorticium ussuricum, Galzinia longibasidia, Lentinus stuppeus and Leptocorticium tenellum. The other new genera, species new combinations are Anaeromyces robustus, Neocallimastix californiae and Piromyces finnis from Neocallimastigomycota, Phytophthora estuarina, P. rhizophorae, Salispina, S. intermedia, S. lobata and S. spinosa from Oomycota, and Absidia stercoraria, Gongronella orasabula, Mortierella calciphila, Mucor caatinguensis, M. koreanus, M. merdicola and Rhizopus koreanus in Zygomycota.

488 citations

Journal ArticleDOI
Nalin N. Wijayawardene, Kevin D. Hyde, Kunhiraman C. Rajeshkumar, David L. Hawksworth, Hugo Madrid, Paul M. Kirk, Uwe Braun, Rajshree V. Singh, Pedro W. Crous, Martin Kukwa, Robert Lücking, Cletus P. Kurtzman, Andrey Yurkov, Danny Haelewaters, André Aptroot, H. Thorsten Lumbsch, Einar Timdal, Damien Ertz, Javier Etayo, Alan J. L. Phillips, Johannes Z. Groenewald, Moslem Papizadeh, Laura Selbmann, Monika C. Dayarathne, Gothamie Weerakoon, E. B. Gareth Jones, Satinee Suetrong, Qing Tian, Rafael F. Castañeda-Ruiz, Ali H. Bahkali, Ka-Lai Pang, Kazuaki Tanaka, Dong-Qin Dai, Jariya Sakayaroj, Martina Hujslová, Lorenzo Lombard, Belle Damodara Shenoy, Ave Suija, Sajeewa S. N. Maharachchikumbura, Kasun M. Thambugala, Dhanushka N. Wanasinghe, Bharati O. Sharma, Subhash Gaikwad, Gargee Pandit, Laura Zucconi, Silvano Onofri, Eleonora Egidi, Huzefa A. Raja, Rampai Kodsueb, Marcela Eugenia da Silva Cáceres, Sergio Pérez-Ortega, Patrícia Oliveira Fiuza, Josiane Santana Monteiro, Larissa N. Vasilyeva, Roger G. Shivas, María Prieto, Mats Wedin, Ibai Olariaga, A. A. Lateef, Yamini Agrawal, Seyed Abolhassan Shahzadeh Fazeli, Mohammad Ali Amoozegar, Guo Zhu Zhao, Walter P. Pfliegler, Gunjan Sharma, Magdalena Oset, Mohamed A. Abdel-Wahab, Susumu Takamatsu, K. Bensch, Nimali I. de Silva, André De Kesel, Anuruddha Karunarathna, Saranyaphat Boonmee, Donald H. Pfister, Yong-Zhong Lu, Zong-Long Luo, Nattawut Boonyuen, Dinushani A. Daranagama, Indunil C. Senanayake, Subashini C. Jayasiri, Milan C. Samarakoon, Xiang-Yu Zeng, Mingkwan Doilom, Luis Quijada, Sillma Rampadarath, Gabriela Heredia, Asha J. Dissanayake, Ruvishika S. Jayawardana, Rekhani H. Perera, Li Zhou Tang, Chayanard Phukhamsakda, Margarita Hernández-Restrepo, Xiao-Ya Ma, Saowaluck Tibpromma, Luís Fernando Pascholati Gusmão, Darshani Weerahewa, Samantha C. Karunarathna 
TL;DR: This work is intended to provide the foundation for updating the ascomycete component of the “Without prejudice list of generic names of Fungi” published in 2013, which will be developed into a list of protected generic names.
Abstract: Knowledge of the relationships and thus the classification of fungi, has developed rapidly with increasingly widespread use of molecular techniques, over the past 10–15 years, and continues to accelerate. Several genera have been found to be polyphyletic, and their generic concepts have subsequently been emended. New names have thus been introduced for species which are phylogenetically distinct from the type species of particular genera. The ending of the separate naming of morphs of the same species in 2011, has also caused changes in fungal generic names. In order to facilitate access to all important changes, it was desirable to compile these in a single document. The present article provides a list of generic names of Ascomycota (approximately 6500 accepted names published to the end of 2016), including those which are lichen-forming. Notes and summaries of the changes since the last edition of ‘Ainsworth & Bisby’s Dictionary of the Fungi’ in 2008 are provided. The notes include the number of accepted species, classification, type species (with location of the type material), culture availability, life-styles, distribution, and selected publications that have appeared since 2008. This work is intended to provide the foundation for updating the ascomycete component of the “Without prejudice list of generic names of Fungi” published in 2013, which will be developed into a list of protected generic names. This will be subjected to the XIXth International Botanical Congress in Shenzhen in July 2017 agreeing to a modification in the rules relating to protected lists, and scrutiny by procedures determined by the Nomenclature Committee for Fungi (NCF). The previously invalidly published generic names Barriopsis, Collophora (as Collophorina), Cryomyces, Dematiopleospora, Heterospora (as Heterosporicola), Lithophila, Palmomyces (as Palmaria) and Saxomyces are validated, as are two previously invalid family names, Bartaliniaceae and Wiesneriomycetaceae. Four species of Lalaria, which were invalidly published are transferred to Taphrina and validated as new combinations. Catenomycopsis Tibell & Constant. is reduced under Chaenothecopsis Vain., while Dichomera Cooke is reduced under Botryosphaeria Ces. & De Not. (Art. 59).

243 citations

Journal ArticleDOI
Rungtiwa Phookamsak, Kevin D. Hyde, Rajesh Jeewon1, D. Jayarama Bhat, E. B. Gareth Jones2, E. B. Gareth Jones3, Sajeewa S. N. Maharachchikumbura4, Olivier Raspé5, Samantha C. Karunarathna6, Samantha C. Karunarathna7, Dhanushka N. Wanasinghe, Sinang Hongsanan8, Sinang Hongsanan9, Mingkwan Doilom, Danushka S. Tennakoon, A. R. Machado10, A. L. Firmino11, Aniket Ghosh12, Anuruddha Karunarathna, Armin Mešić, Arun Kumar Dutta13, Benjarong Thongbai, B. Devadatha14, Chada Norphanphoun, Chanokned Senwanna9, Chanokned Senwanna3, De-Ping Wei, Dhandevi Pem9, Dhandevi Pem8, Frank K. Ackah15, Gen-Nuo Wang16, Hong-Bo Jiang9, Hong-Bo Jiang6, Hugo Madrid17, Hyang Burm Lee18, Ishani D. Goonasekara9, Ishani D. Goonasekara6, Ishara S. Manawasinghe9, I. Kusan, Josep Cano, Josepa Gené, Junfu Li6, Junfu Li9, Kanad Das19, Krishnendu Acharya13, K. N. Anil Raj20, K. P. Deepna Latha20, K. W. Thilini Chethana9, Mao-Qiang He21, Margarita Dueñas22, M. Jadan, María P. Martín22, Milan C. Samarakoon3, Milan C. Samarakoon9, Monika C. Dayarathne9, Monika C. Dayarathne6, Mubashar Raza21, Myung Soo Park23, M. Teresa Telleria22, Napalai Chaiwan9, Napalai Chaiwan6, Neven Matočec, Nimali I. de Silva, Olinto Liparini Pereira24, Paras Nath Singh25, Patinjareveettil Manimohan20, Priyanka Uniyal12, Qiu-Ju Shang9, Rajendra P. Bhatt12, Rekhani H. Perera9, Renato Lúcio Mendes Alvarenga10, Sandra Nogal-Prata22, Sanjay K. Singh25, Santhiti Vadthanarat3, Seung-Yoon Oh23, Shi-Ke Huang, Shiwali Rana25, Sirinapa Konta9, Sirinapa Konta6, Soumitra Paloi13, Subashini C. Jayasiri9, Subashini C. Jayasiri6, Sun Jeong Jeon18, Tahir Mehmood12, Tatiana Baptista Gibertoni10, Thuong T. T. Nguyen18, Upendra Singh12, Vinodhini Thiyagaraja, V. Venkateswara Sarma14, Wei Dong, Xian-Dong Yu16, Yong-Zhong Lu26, Yong-Zhong Lu9, Young Woon Lim23, Yun Chen, Zdenko Tkalčec, Zhi-Feng Zhang21, Zong-Long Luo9, Zong-Long Luo27, Dinushani A. Daranagama28, Kasun M. Thambugala29, Saowaluck Tibpromma, Erio Camporesi, Timur S. Bulgakov, Asha J. Dissanayake9, Indunil C. Senanayake8, Indunil C. Senanayake9, Dong-Qin Dai, Li-Zhou Tang, Sehroon Khan7, Sehroon Khan6, Huang Zhang16, Itthayakorn Promputtha3, Lei Cai21, Putarak Chomnunti9, Rui-Lin Zhao21, Saisamorn Lumyong3, Saranyaphat Boonmee9, Ting-Chi Wen26, Peter E. Mortimer6, Jianchu Xu7 
TL;DR: The present study describes 12 new genera, 74 new species, three new combinations, two reference specimens, a re-circumscription of the epitype, and 15 records of sexual-asexual morph connections, new hosts and new geographical distributions.
Abstract: This article is the ninth in the series of Fungal Diversity Notes, where 107 taxa distributed in three phyla, nine classes, 31 orders and 57 families are described and illustrated. Taxa described in the present study include 12 new genera, 74 new species, three new combinations, two reference specimens, a re-circumscription of the epitype, and 15 records of sexual-asexual morph connections, new hosts and new geographical distributions. Twelve new genera comprise Brunneofusispora, Brunneomurispora, Liua, Lonicericola, Neoeutypella, Paratrimmatostroma, Parazalerion, Proliferophorum, Pseudoastrosphaeriellopsis, Septomelanconiella, Velebitea and Vicosamyces. Seventy-four new species are Agaricus memnonius, A. langensis, Aleurodiscus patagonicus, Amanita flavoalba, A. subtropicana, Amphisphaeria mangrovei, Baorangia major, Bartalinia kunmingensis, Brunneofusispora sinensis, Brunneomurispora lonicerae, Capronia camelliae-yunnanensis, Clavulina thindii, Coniochaeta simbalensis, Conlarium thailandense, Coprinus trigonosporus, Liua muriformis, Cyphellophora filicis, Cytospora ulmicola, Dacrymyces invisibilis, Dictyocheirospora metroxylonis, Distoseptispora thysanolaenae, Emericellopsis koreana, Galiicola baoshanensis, Hygrocybe lucida, Hypoxylon teeravasati, Hyweljonesia indica, Keissleriella caraganae, Lactarius olivaceopallidus, Lactifluus midnapurensis, Lembosia brigadeirensis, Leptosphaeria urticae, Lonicericola hyaloseptispora, Lophiotrema mucilaginosis, Marasmiellus bicoloripes, Marasmius indojasminodorus, Micropeltis phetchaburiensis, Mucor orantomantidis, Murilentithecium lonicerae, Neobambusicola brunnea, Neoeutypella baoshanensis, Neoroussoella heveae, Neosetophoma lonicerae, Ophiobolus malleolus, Parabambusicola thysanolaenae, Paratrimmatostroma kunmingensis, Parazalerion indica, Penicillium dokdoense, Peroneutypa mangrovei, Phaeosphaeria cycadis, Phanerochaete australosanguinea, Plectosphaerella kunmingensis, Plenodomus artemisiae, P. lijiangensis, Proliferophorum thailandicum, Pseudoastrosphaeriellopsis kaveriana, Pseudohelicomyces menglunicus, Pseudoplagiostoma mangiferae, Robillarda mangiferae, Roussoella elaeicola, Russula choptae, R. uttarakhandia, Septomelanconiella thailandica, Spencermartinsia acericola, Sphaerellopsis isthmospora, Thozetella lithocarpi, Trechispora echinospora, Tremellochaete atlantica, Trichoderma koreanum, T. pinicola, T. rugulosum, Velebitea chrysotexta, Vicosamyces venturisporus, Wojnowiciella kunmingensis and Zopfiella indica. Three new combinations are Baorangia rufomaculata, Lanmaoa pallidorosea and Wojnowiciella rosicola. The reference specimens of Canalisporium kenyense and Tamsiniella labiosa are designated. The epitype of Sarcopeziza sicula is re-circumscribed based on cyto- and histochemical analyses. The sexual-asexual morph connection of Plenodomus sinensis is reported from ferns and Cirsium for the first time. In addition, the new host records and country records are Amanita altipes, A. melleialba, Amarenomyces dactylidis, Chaetosphaeria panamensis, Coniella vitis, Coprinopsis kubickae, Dothiorella sarmentorum, Leptobacillium leptobactrum var. calidus, Muyocopron lithocarpi, Neoroussoella solani, Periconia cortaderiae, Phragmocamarosporium hederae, Sphaerellopsis paraphysata and Sphaeropsis eucalypticola.

171 citations


Cites background from "Phylogenetic and morphological appr..."

  • ...Phyllachoraceae in Dayarathne et al. (2017) and Mardones et al....

    [...]

  • ...…from L. italica in having longer asci (L. urticae, 60–140 9 9–11 lm versus 60–112 9 7–12 lm, L. italica), longer ascospores (L. urticae, 35–40 9 4–6 lm versus 12–18 9 4–6 lm, L. italica) and more ascospore septation (L. urticae, (8–)9-septate versus 3-septate, L. italica) (Dayarathne et al. 2015)....

    [...]

  • ...…a thick-walled peridium composed of scleroplectenchymatous cells, cylindrical to cylindric-clavate asci, reddish to yellowish brown, ellipsoidal to fusiform, septate ascospores and coelomycetous coniothyrium-like and phoma-like asexual morphs (Ariyawansa et al. 2015b; Dayarathne et al. 2015)....

    [...]

  • ...The genus is characterized by semi-immersed to erumpent, coriaceous ascomata, which become superficial, a thick-walled peridium composed of scleroplectenchymatous cells, cylindrical to cylindric-clavate asci, reddish to yellowish brown, ellipsoidal to fusiform, septate ascospores and coelomycetous coniothyrium-like and phoma-like asexual morphs (Ariyawansa et al. 2015b; Dayarathne et al. 2015)....

    [...]

Journal ArticleDOI
TL;DR: The present study revises the classification of the hyaline-spored coelomycetes and provides a modern taxonomic framework based on both morphology and phylogeny.
Abstract: Coelomycete is a general term used for asexual fungi which produce conidia in fruiting bodies: pycnidial, acervular, cupulate, pycnothyria or stromatic conidiomata. The group contains numerous plant pathogenic, saprobic and endophytic species associated with a wide range of hosts. Traditionally, morphological characters and host associations have been used as criteria to identify and classify coelomycetes, and this has resulted in a poor understanding of their generic and species boundaries. DNA based taxonomic studies have provided a better outlook of the phylogenetic and evolutionary trends in coelomycetes. However, the present outcomes represent only a preliminary step towards the understanding of coelomycetes. Many genera have not been revisited since they were first described. The present study revises the classification of the hyaline-spored coelomycetes and provides a modern taxonomic framework based on both morphology and phylogeny. In total, 248 genera were investigated, of which less than 100 are known to have sequence data. Multi-locus sequence data analyses of 28S nrDNA, 18S nrDNA, ITS, RNA polymerase II second largest subunit (rpb2), and part of the translation elongation factor 1-alpha gene (tef1) and β-tubulin (tub2) gene regions were analysed. As a result, three new genera and 23 new species are introduced. In addition, three new links between sexual and asexual genera are provided. There are 138 genera that lack sequence data, and these are treated as Ascomycota, genera incertae sedis. Line drawings and descriptions are provided based on the examination of types and fresh collections and on the literature.

58 citations

Journal ArticleDOI
30 Mar 2020
TL;DR: This study improves the understanding of this new fennel disease, but further studies are needed for planning effective disease management strategies.
Abstract: A new disease of fennel is described from Sicily (southern Italy). Surveys of the disease and sampling were conducted during spring 2017 and 2018 in Adrano and Bronte municipalities (Catania province) where this crop is widely cultivated. Isolations from the margin of symptomatic tissues resulted in fungal colonies with the same morphology. Pathogenicity tests with one isolate of the fungus on 6-month-old plants of fennel reproduced similar symptoms to those observed in nature. Inoculation experiments to assess the susceptibility of six different fennel cultivars to infection by the pathogen showed that the cultivars 'Narciso', 'Apollo', and 'Pompeo' were more susceptible than 'Aurelio', 'Archimede', and 'Pegaso'. Phylogenetic analyses based on a matrix of the internal transcribed spacer (ITS), the large subunit (LSU), and the small subunit (SSU) rDNA regions revealed that the isolates represent a new genus and species within the Leptosphaeriaceae, which is here described as Ochraceocephala foeniculi gen. et sp. nov. This study improves the understanding of this new fennel disease, but further studies are needed for planning effective disease management strategies. According to the results of the phylogenetic analyses, Subplenodomus iridicola is transferred to the genus Alloleptosphaeria and Acicuseptoria rumicis to Paraleptosphaeria.

8 citations


Cites background from "Phylogenetic and morphological appr..."

  • ...No asexual morph is known for A. italica (Dayarathne et al. 2015), but the ascomata, asci and ascospores of A. iridicola and A. italica share many traits....

    [...]

References
More filters
Journal ArticleDOI
TL;DR: The newest addition in MEGA5 is a collection of maximum likelihood (ML) analyses for inferring evolutionary trees, selecting best-fit substitution models, inferring ancestral states and sequences, and estimating evolutionary rates site-by-site.
Abstract: Comparative analysis of molecular sequence data is essential for reconstructing the evolutionary histories of species and inferring the nature and extent of selective forces shaping the evolution of genes and species. Here, we announce the release of Molecular Evolutionary Genetics Analysis version 5 (MEGA5), which is a user-friendly software for mining online databases, building sequence alignments and phylogenetic trees, and using methods of evolutionary bioinformatics in basic biology, biomedicine, and evolution. The newest addition in MEGA5 is a collection of maximum likelihood (ML) analyses for inferring evolutionary trees, selecting best-fit substitution models (nucleotide or amino acid), inferring ancestral states and sequences (along with probabilities), and estimating evolutionary rates site-by-site. In computer simulation analyses, ML tree inference algorithms in MEGA5 compared favorably with other software packages in terms of computational efficiency and the accuracy of the estimates of phylogenetic trees, substitution parameters, and rate variation among sites. The MEGA user interface has now been enhanced to be activity driven to make it easier for the use of both beginners and experienced scientists. This version of MEGA is intended for the Windows platform, and it has been configured for effective use on Mac OS X and Linux desktops. It is available free of charge from http://www.megasoftware.net.

39,110 citations


"Phylogenetic and morphological appr..." refers methods in this paper

  • ...Phylogenetic trees and data files were viewed in MEGA v. 5 (Tamura et al. 2011), TreeView v. 1.6.6 (Page 1996) and FigTree v. 1.4 (Rambaut & Drummond 2008)....

    [...]

  • ...The best scoring tree from a separate randomized tree under the same model was selected with a final likelihood value of - 4057.667790 and data files were viewed in MEGA v. 5 (Tamura et al. 2011)....

    [...]

Journal ArticleDOI
TL;DR: This work developed, implemented, and thoroughly tested rapid bootstrap heuristics in RAxML (Randomized Axelerated Maximum Likelihood) that are more than an order of magnitude faster than current algorithms and can contribute to resolving the computational bottleneck and improve current methodology in phylogenetic analyses.
Abstract: Despite recent advances achieved by application of high-performance computing methods and novel algorithmic techniques to maximum likelihood (ML)-based inference programs, the major computational bottleneck still consists in the computation of bootstrap support values. Conducting a probably insufficient number of 100 bootstrap (BS) analyses with current ML programs on large datasets—either with respect to the number of taxa or base pairs—can easily require a month of run time. Therefore, we have developed, implemented, and thoroughly tested rapid bootstrap heuristics in RAxML (Randomized Axelerated Maximum Likelihood) that are more than an order of magnitude faster than current algorithms. These new heuristics can contribute to resolving the computational bottleneck and improve current methodology in phylogenetic analyses. Computational experiments to assess the performance and relative accuracy of these heuristics were conducted on 22 diverse DNA and AA (amino acid), single gene as well as multigene, real-world alignments containing 125 up to 7764 sequences. The standard BS (SBS) and rapid BS (RBS) values drawn on the best-scoring ML tree are highly correlated and show almost identical average support values. The weighted RF (Robinson-Foulds) distance between SBS- and RBS-based consensus trees was smaller than 6% in all cases (average 4%). More importantly, RBS inferences are between 8 and 20 times faster (average 14.73) than SBS analyses with RAxML and between 18 and 495 times faster than BS analyses with competing programs, such as PHYML or GARLI. Moreover, this performance improvement increases with alignment size. Finally, we have set up two freely accessible Web servers for this significantly improved version of RAxML that provide access to the 200-CPU cluster of the Vital-IT unit at the Swiss Institute of Bioinformatics and the 128-CPU cluster of the CIPRES project at the San Diego Supercomputer Center. These Web servers offer the possibility to conduct large-scale phylogenetic inferences to a large part of the community that does not have access to, or the expertise to use, high-performance computing resources. (Maximum likelihood; phylogenetic inference; rapid bootstrap; RAxML; support values.)

6,585 citations


"Phylogenetic and morphological appr..." refers methods in this paper

  • ...…using the RAxML software (Stamatakis et al. 2008) implemented in raxmlGUI v.0.9b2 (Silvestro & Michalak 2010), Rapid bootstrap with nonparametric bootstrap iterations (Stamatakis et al. 2008) was run in 1,000 replicates with the GTR model and a discrete gamma distribution (Liu et al. 2011)....

    [...]

  • ...Maximum likelihood trees were generated using the RAxML software (Stamatakis et al. 2008) implemented in raxmlGUI v.0.9b2 (Silvestro & Michalak 2010), Rapid bootstrap with nonparametric bootstrap iterations (Stamatakis et al. 2008) was run in 1,000 replicates with the GTR model and a discrete gamma…...

    [...]

Journal ArticleDOI
TL;DR: A novel approach that uses the polymerase chain reaction (PCR) for rapid simplified restriction typing and mapping of DNA from many different isolates is described, which ought to have wide applicability for clinical detection and other studies.
Abstract: Detailed restriction analyses of many samples often require substantial amounts of time and effort for DNA extraction, restriction digests, Southern blotting, and hybridization. We describe a novel approach that uses the polymerase chain reaction (PCR) for rapid simplified restriction typing and mapping of DNA from many different isolates. DNA fragments up to 2 kilobase pairs in length were efficiently amplified from crude DNA samples of several pathogenic Cryptococcus species, including C. neoformans, C. albidus, C. laurentii, and C. uniguttulatus. Digestion and electrophoresis of the PCR products by using frequent-cutting restriction enzymes produced complex restriction phenotypes (fingerprints) that were often unique for each strain or species. We used the PCR to amplify and analyze restriction pattern variation within three major portions of the ribosomal DNA (rDNA) repeats from these fungi. Detailed mapping of many restriction sites within the rDNA locus was determined by fingerprint analysis of progressively larger PCR fragments sharing a common primer site at one end. As judged by PCR fingerprints, the rDNA of 19 C. neoformans isolates showed no variation for four restriction enzymes that we surveyed. Other Cryptococcus spp. showed varying levels of restriction pattern variation within their rDNAs and were shown to be genetically distinct from C. neoformans. The PCR primers used in this study have also been successfully applied for amplification of rDNAs from other pathogenic and nonpathogenic fungi, including Candida spp., and ought to have wide applicability for clinical detection and other studies.

4,187 citations


"Phylogenetic and morphological appr..." refers methods in this paper

  • ...The partial large subunit nuclear rDNA (28S, LSU) was amplified with primers LROR and LR5 (Vilgalys and Hester 1990)....

    [...]

  • ...The partial large subunit nuclear rDNA (28S, LSU) was amplified with primers LROR and LR5 (Vilgalys and Hester 1990)....

    [...]