Taxonomic Re-Examination of Nine Rosellinia Types (Ascomycota, Xylariales) Stored in the Saccardo Mycological Collection

In a recent monograph on the genus Rosellinia, type specimens worldwide were revised and re-classified using a morphological approach. Among them, some came from Pier Andrea Saccardo’s fungarium stored in the Herbarium of the Padova Botanical Garden. In this work, we taxonomically re-examine via a morphological and molecular approach nine different Roselliniasensu Saccardo types. ITS1 and/or ITS2 sequences were successfully obtained applying Illumina MiSeq technology and phylogenetic analyses were carried out in order to elucidate their current taxonomic position. Only the ITS1 sequence was recovered for Rosellinia areolata, while for R. geophila, only the ITS2 sequence was recovered. We proposed here new combinations for Rosellinia chordicola, R. geophila and R. horridula, while for R. ambigua, R. areolata, R. australis, R. romana and R. somala, we did not suggest taxonomic changes compared to the current ones. The name Rosellinia subsimilis Sacc. is invalid, as it is a later homonym of R. subsimilis P. Karst. & Starbäck. Therefore, we introduced Coniochaeta dakotensis as a nomen novum for R. subsimilis Sacc. This is the first time that these types have been subjected to a molecular study. Our results demonstrate that old types are an important source of DNA sequence data for taxonomic re-examinations.

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Biological and Phylogenetic Analyses Suggest that Two Cryphonectria spp. Cause Cankers of Eucalyptus in Africa

Plant Disease ◽

10.1094/pdis.2003.87.11.1329 ◽

2003 ◽

Vol 87 (11) ◽

pp. 1329-1332 ◽

Cited By ~ 18

Author(s):

J. Roux ◽

H. Myburg ◽

B. D. Wingfield ◽

M. J. Wingfield

Keyword(s):

South Africa ◽

South America ◽

South African ◽

Sequence Data ◽

Phylogenetic Analyses ◽

Eucalyptus Grandis ◽

Its Region ◽

South African Isolate ◽

Dna Sequence Data ◽

The Republic

Cryphonectria cubensis is an economically important pathogen of commercial Eucalyptus spp. Differences have been reported for disease symptoms associated with Cryphonectria canker in South Africa and other parts of the world, and recent DNA-based comparisons have confirmed that the fungus in South Africa is different from that in South America and Australasia. During a disease survey in the Republic of Congo, Cryphonectria canker was identified as an important disease on Eucalyptus grandis and E. urophylla. In this study, we compared Congolese and South African isolates of C. cubensis using DNA sequence data and pathogenicity under greenhouse conditions. The β-tubulin and internal transcribed spacer (ITS) region sequences show that C. cubensis in Congo is different from the fungus in South Africa and that Congolese isolates group most closely with South American isolates. Furthermore, pathogenicity tests showed that a South African isolate was more aggressive than two Congolese isolates. We conclude that two distinct Cryphonectria spp. occur in Africa and hypothesize that the fungus in the Congo probably was introduced into Africa from South America. Both fungi are important pathogens causing disease and death of economically important plantation trees. However, they apparently have different origins and must be treated separately in terms of disease management and quarantine considerations.

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Contrasting the population genetic structure of two velvet worm taxa (Onychophora : Peripatopsidae : Peripatopsis) in forest fragments along the south-eastern Cape, South Africa

Invertebrate Systematics ◽

10.1071/is16085 ◽

2017 ◽

Vol 31 (6) ◽

pp. 781 ◽

Cited By ~ 4

Author(s):

Savel R. Daniels ◽

Megan Dreyer ◽

Prashant P. Sharma

Keyword(s):

South Africa ◽

Population Genetic ◽

Sequence Data ◽

Phylogenetic Analyses ◽

Forest Fragments ◽

Eastern Cape ◽

Dna Sequence Data ◽

Mtdna Coi ◽

Haplotype Networks ◽

Velvet Worm

During the present study, we examined the phylogeography and systematics of two species of velvet worm (Peripatopsis Pocock, 1894) in the forested region of the southern Cape of South Africa. A total of 89 P. moseleyi (Wood-Mason, 1879) and 65 P. sedgwicki (Purcell, 1899) specimens were collected and sequenced for the cytochrome c oxidase subunit I mtDNA (COI). In addition, a single P. sedgwicki specimen per sample locality was sequenced for the 18S rRNA locus. Furthermore, morphological variation among P. sedgwicki sample localities were explored using traditional alpha taxonomic characters. DNA sequence data were subjected to phylogenetic analyses using Bayesian inference and population genetic analyses using haplotype networks and analyses of molecular variance (AMOVAs). Phylogenetic results revealed the presence of four and three clades within P. moseleyi and P. sedgwicki respectively. Haplotype networks were characterised by the absence of shared haplotypes between clades, suggesting genetic isolation, a result corroborated by the AMOVA and highly significant FST values. Specimens from Fort Fordyce Nature Reserve were both genetically and morphologically distinct from the two remaining P. sedgwicki clades. The latter result suggests the presence of a novel lineage nested within P. sedgwicki and suggests that species boundaries within this taxon require re-examination.

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Species delimitation of Hymenasplenium obliquissimum group (Aspleniaceae) in southwestern China

Phytotaxa ◽

10.11646/phytotaxa.480.1.3 ◽

2021 ◽

Vol 480 (1) ◽

pp. 29-44

Author(s):

GUO-CHENG ZHANG ◽

HUA-FENG HONG ◽

GE-HONG CHEN ◽

SHU-GANG LU ◽

YAN-FEN CHANG

Keyword(s):

Sequence Data ◽

Phylogenetic Analyses ◽

Reticulate Evolution ◽

Southwestern China ◽

Natural Classification ◽

Ploidy Levels ◽

Dna Sequence Data ◽

Taxonomic Implications ◽

Taxonomic Approach ◽

Locus Classicus

The Hymenasplenium obliquissimum group contains the widespread H. obliquissimum and several geographically restricted species, including H. retusulum, H. wuliangshanense, H. latidens, H. changputungense, H. quercicola, H. szechuanense, H. furfuraceum, H. adiantifrons, and H. filipes. However, the taxonomy of this group is still unclear and needs to be revised because some entities were treated infraspecifically or as synonyms and the validation of some species still needs to be assessed. To formulate a natural classification and investigate the relationships in this group, we collected and studied specimens of species related to the H. obliquissimum group and obtained specimens of species described by Ching at their locus classicus in southwestern China. An integrative taxonomic approach was taken to delimit species in the group using cytological, morphological, and DNA sequence data. Specifically, in the phylogenetic analyses, the H. obliquissimum group was recovered as a monophyletic group, comprising five principal chloroplast lineages. Based on our inferences, we provided taxonomic implications of chloroplast lineages discovered in this study and suggested possible reticulate evolution in the H. obliquissimum group which was interpreted by the incongruence of chloroplast and nuclear phylogenies. Further studies to strengthen the taxonomic of taxa especially those with the co-existence of different ploidy levels are still warranted.

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Revision of Batrachospermum sections Acarposporophytum and Aristata (Batrachospermales, Rhodophyta) with the establishment of the new genera Acarposporophycos and Visia

Phytotaxa ◽

10.11646/phytotaxa.395.2.1 ◽

2019 ◽

Vol 395 (2) ◽

pp. 51 ◽

Cited By ~ 6

Author(s):

ORLANDO NECCHI JR ◽

AURO GARCIA FILHO ◽

MONICA O. PAIANO

Keyword(s):

Dna Sequence ◽

Sequence Data ◽

Morphological Characteristics ◽

Sequence Divergence ◽

Morphological Evidence ◽

Similar Species ◽

Type Specimens ◽

Generic Level ◽

Dna Sequence Data ◽

Cell Layers

Sections of the paraphyletic genus Batrachospermum have been recently investigated using molecular (DNA sequence data) and morphological evidence. Some sections have been recognized as distinct genera in order to resolve paraphyly. Batrachospermum species of sections Acarposporophytum and Aristata are showed to form well-supported clades and, in this study, we propose to raise them to the generic level, Acarposporophycos gen. nov. and Visia gen. nov., respectively. In addition, we re-evaluated the characters used to circumscribe species by reexamining type specimens as well as new collections. Acarposporophycos, with the sole species A. brasiliensis, is characterized by the lack of carposporophytic stage, with the fertilized carpogonia germinating to form directly the filaments of the ‘Chantransia’ stage on the gametophyte. Of the five previously accepted species in the genus Visia, we recognize four species: V. cayennensis—type species (synonym Batrachospermum beraense), V. cylindrocellularis, V. longiarticulata and V. turgida. The species are circumscribed on the basis of morphological characteristics (shape and cell layers of primary fascicles, occurrence of secondary fascicles, post-fertilization development of carpogonia) and DNA sequence data (rbcL and COI-5P). Specimens described as Visia cayennensis from Australia and Brazil had a high sequence divergence in comparison to those from or near the type locality (French Guiana), and are here referred to as Visia spp. Further studies are recommended to better discriminate these morphologically similar species on a broad geographical scale and define their status at the species level. Descriptions, identification key and photomicrographs are presented for each recognized species.

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Introducing Chaetothyriothecium, a new genus of Microthyriales

Phytotaxa ◽

10.11646/phytotaxa.161.2.7 ◽

2014 ◽

Vol 161 (2) ◽

pp. 157 ◽

Cited By ~ 13

Author(s):

Sinang Hongsanan ◽

Putarak Chomnunti ◽

Pedro W. Crous ◽

Ekachai Chukeatirote ◽

Kevin D. Hyde

Keyword(s):

New Genus ◽

Sequence Data ◽

Phylogenetic Analyses ◽

Molecular Data ◽

Plant Host ◽

Dna Sequence Data ◽

Limited Sampling ◽

Black Spots ◽

Gene Data ◽

Central Thailand

The order Microthyriales comprises foliar biotrophs, epiphytes, pathogens or saprobes that occur on plant leaves and stems. The order is relatively poorly known due to limited sampling and few in-depth studies. There is also a lack of phylogenetic data for these fungi, which form small black spots on plant host surfaces, but rarely cause any damage to the host. A "Microthyriaceae"-like fungus collected in central Thailand is described as a new genus, Chaetothyriothecium (type species Chaetothyriothecium elegans sp. nov.). Phylogenetic analyses of LSU gene data showed this species to cluster with other members of Microthyriales, where it is related to Microthyrium microscopicum the type of the order. The description of the new species is supplemented by DNA sequence data, which resolves its placement in the order. Little molecular data is available for this order, stressing the need for further collections and molecular data.

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Molecular phylogenetics of the Onobrychis genus (Fabaceae: Papilionoideae) using ITS and trnL–trnF DNA sequence data

Australian Journal of Botany ◽

10.1071/bt13279 ◽

2014 ◽

Vol 62 (3) ◽

pp. 235 ◽

Cited By ~ 2

Author(s):

S. Safaei Chaei Kar ◽

F. Ghanavati ◽

M. R. Naghavi ◽

H. Amirabadi-zade ◽

R. Rabiee

Keyword(s):

Dna Sequence ◽

Molecular Phylogenetics ◽

Sequence Data ◽

Phylogenetic Analyses ◽

Dna Sequence Data ◽

Group I ◽

Molecular Phylogenetic ◽

Nuclear Its ◽

Cultivated Species ◽

Relationship Of

Onobrychis, comprising more than 130 species, is a genus of the family Fabaceae. At this time, the interspecies relationship of this biologically important genus is still a subject of great discussion and debate. To help resolve this disagreement, we used molecular phylogeny to analyse internal transcribed spacer (ITS) and trnL–trnF sequences of 76 species of Onobrychis. Bayesian interference, maximum parsimony and maximum likelihood analyses of nuclear ITS and plastid trnL–trnF DNA sequence data generated trees with strong posterior probability for two groups: Onobrychis subgen. Sisyrosema (including: Heliobrychis, Hymenobrychis, Afghanicae and Anthyllium sections) along with Laxiflorae section in Group I and Onobrychis subgen. Onobrychis (except Laxiflorae section) in the other (Group II). The Laxiflorae section roots back to the ancestral node for Sisyrosema subgen. O. viciifolia (cultivated species), which is closely associated with O. cyri var. cyri, suggesting that the latter may be a wild progenitor of O. viciifolia. The present study supported the paraphyly of subgenera Onobrychis and Sisyrosema. The study proposed the paraphyletic nature of the sections Onobrychis, Dendrobrychis, Heliobrychis and Hymenobrychis. Together with our molecular phylogenetic analyses we present a review of Onobrychis morphology and discuss and compare our results with those of earlier morphological and molecular phylogenetic analyses.

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Cymbidium jiangchengense (Orchidaceae; Epidendroideae; Cymbidiinae), a new species from China: evidence from morphology and DNA sequences

Phytotaxa ◽

10.11646/phytotaxa.408.1.6 ◽

2019 ◽

Vol 408 (1) ◽

pp. 77-84

Author(s):

YING-LI PENG ◽

ZHUANG ZHOU ◽

SI-REN LAN ◽

ZHONG-JIAN LIU

Keyword(s):

Dna Sequences ◽

Yunnan Province ◽

Sequence Data ◽

Detailed Comparison ◽

Distinct Species ◽

Molecular Study ◽

Orchid Species ◽

Dna Sequence Data ◽

Pink Flower ◽

A New Species

A new orchid species, Cymbidium jiangchengense, from Yunnan Province, China, is described and illustrated. Its distinctiveness is evaluated with morphology and molecular analyses. A detailed comparison between the newly discovered orchid and other members of Cymbidium was performed. The new plant was characterized by stem-like pseudobulbs, narrowly oblong leaves, coriaceous leaves with an acute apex, a 2-flowered inflorescence, a purplish pink flower, narrowly elliptic sepals, petals, a obovate-lanceolate lip with a cordate midlobe, a yellow central callus, and a disc with a trough shape longitudinal lamella from the base extending to the base of the midlobe and a lamellae apex inflated to form two calluses that are not confluent apically. These features distinguish this new orchid from all other known species of Cymbidium. A molecular study based on nuclear ribosomal ITS and plastid matK and rbcL DNA sequence data indicates that C. jiangchengense is a distinct species that sister to C. wadae and a member of section Eburnea, subgenus Cyperorchis.

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Investigating the amphiatlantic status of Facelina bostoniensis (Couthouy, 1838) (Nudibranchia: Aeolidida)

Journal of Molluscan Studies ◽

10.1093/mollus/eyz034 ◽

2020 ◽

Vol 86 (1) ◽

pp. 64-71

Author(s):

Leila Carmona

Keyword(s):

Mediterranean Sea ◽

Sequence Data ◽

Phylogenetic Analyses ◽

16S Rrna Genes ◽

Rrna Genes ◽

Mitochondrial Cytochrome ◽

Molecular Systematic ◽

Dna Sequence Data ◽

Eastern Atlantic Ocean ◽

The Mediterranean

ABSTRACT The aeolid species Facelina bostoniensis (Couthouy, 1838) was originally described from Massachusetts and was later reported from the Eastern Atlantic Ocean and the Mediterranean Sea. So far, no molecular systematic study of its amphiatlantic status has been carried out. Phylogenetic analyses (maximum likelihood and Bayesian) of DNA sequence data for the mitochondrial cytochrome c oxidase subunit I and 16S rRNA genes confirm the amphiatlantic status of F. bostoniensis. My findings show that this species is restricted to the Atlantic realm and that the species recorded from the Mediterranean is not F. bostoniensis but F. vicina (Bergh, 1882). It is hypothesized that previous records of F. bostoniensis from the Mediterranean Sea were actually misidentifications of F. vicina.

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Analysis of Genetic Diversity of Fusarium tupiense, the Main Causal Agent of Mango Malformation Disease in Southern Spain

Plant Disease ◽

10.1094/pdis-02-15-0153-re ◽

2016 ◽

Vol 100 (2) ◽

pp. 276-286 ◽

Cited By ~ 10

Author(s):

M. Crespo ◽

F. M. Cazorla ◽

A. de Vicente ◽

E. Arrebola ◽

J. A. Torés ◽

...

Keyword(s):

Genetic Diversity ◽

Sequence Data ◽

Random Amplified Polymorphic Dna ◽

Phylogenetic Analyses ◽

Southern Spain ◽

Fusarium Fujikuroi ◽

Dna Sequence Data ◽

Fusarium Fujikuroi Species Complex ◽

Polymerase Chain ◽

Mango Malformation

Mango malformation disease (MMD) has become an important global disease affecting this crop. The aim of this study was to identify the main causal agents of MMD in the Axarquía region of southern Spain and determine their genetic diversity. Fusarium mangiferae was previously described in the Axarquía region but it represented only one-third of the fusaria recovered from malformed trees. In the present work, fusaria associated with MMD were analyzed by arbitrary primed polymerase chain reaction (ap-PCR), random amplified polymorphic DNA (RAPD), vegetative compatibility grouping (VCG), a PCR screen for mating type idiomorph, and phylogenetic analyses of multilocus DNA sequence data to identify and characterize the genetic diversity of the MMD pathogens. These analyses confirmed that 92 of the isolates were F. tupiense, which was previously only known from Brazil and Senegal. In addition, two isolates of a putatively novel MMD pathogen were discovered, nested within the African clade of the Fusarium fujikuroi species complex. The F. tupiense isolates all belonged to VCG I, which was first described in Brazil, and the 11 isolates tested showed pathogenicity on mango seedlings. Including the prior discovery of F. mangiferae, three exotic MMD pathogenic species have been found in southern Spain, which suggests multiple independent introductions of MMD pathogens in the Axarquía region.

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Veterinary Fusarioses within the United States

Journal of Clinical Microbiology ◽

10.1128/jcm.01607-16 ◽

2016 ◽

Vol 54 (11) ◽

pp. 2813-2819 ◽

Cited By ~ 21

Author(s):

Kerry O'Donnell ◽

Deanna A. Sutton ◽

Nathan Wiederhold ◽

Vincent A. R. G. Robert ◽

Pedro W. Crous ◽

...

Keyword(s):

United States ◽

Dna Sequence ◽

Species Complex ◽

Sequence Data ◽

Phylogenetic Analyses ◽

Distinct Species ◽

The United States ◽

Content Type ◽

Dna Sequence Data ◽

Species Complexes

Multilocus DNA sequence data were used to assess the genetic diversity and evolutionary relationships of 67Fusariumstrains from veterinary sources, most of which were from the United States. Molecular phylogenetic analyses revealed that the strains comprised 23 phylogenetically distinct species, all but two of which were previously known to infect humans, distributed among eight species complexes. The majority of the veterinary isolates (47/67 = 70.1%) were nested within theFusarium solanispecies complex (FSSC), and these included 8 phylospecies and 33 unique 3-locus sequence types (STs). Three of the FSSC species (Fusarium falciforme,Fusarium keratoplasticum, andFusariumsp. FSSC 12) accounted for four-fifths of the veterinary strains (38/47) and STs (27/33) within this clade. Most of theF. falciformestrains (12/15) were recovered from equine keratitis infections; however, strains ofF. keratoplasticumandFusariumsp. FSSC 12 were mostly (25/27) isolated from marine vertebrates and invertebrates. Our sampling suggests that theFusarium incarnatum-equisetispecies complex (FIESC), with eight mycoses-associated species, may represent the second most important clade of veterinary relevance withinFusarium. Six of the multilocus STs within the FSSC (3+4-eee, 1-b, 12-a, 12-b, 12-f, and 12-h) and one each within the FIESC (1-a) and theFusarium oxysporumspecies complex (ST-33) were widespread geographically, including three STs with transoceanic disjunctions. In conclusion, fusaria associated with veterinary mycoses are phylogenetically diverse and typically can only be identified to the species level using DNA sequence data from portions of one or more informative genes.

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