Alguns fungos do Brasil: XIII - Hifomicetos

Viégas, A. P.

doi:10.1590/s0006-87051946000800001

Cited by 16 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…candelabrum (av. 60 × 4.5 μm) ( Viégas 1946 , Crous 2002 , Lombard et al. 2010a , 2015b ), which was considered to represent intraspecific variation (Supplementary Table S4 ).…”

Section: Resultsmentioning

confidence: 99%

“…candelabrum species complex are characterised by ellipsoidal to obpyriform vesicles and 1-septate macroconidia, producing orange to red-brown perithecia, 8-spored asci and 1-septate ascospores. The species complex includes both heterothallic and homothallic species that are known from Africa, Asia, Europe, North and South America, Oceania ( Viégas 1946 , Schoch et al. 1999 , Crous & Kang 2001 , Crous 2002 , Lombard et al.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Reconsideration of species boundaries and proposed DNA barcodes for Calonectria

Liu

Wingfield

et al. 2020

Studies in Mycology

123

View full text Add to dashboard Cite

Calonectria represents a genus of phytopathogenic ascomycetous fungi with a worldwide distribution. In recent years, there has been an increase in the number of taxonomic studies on these fungi. Currently, there are 169 described species of Calonectria based on comparisons of DNA sequence data, combined with morphological characteristics. However, for some of these species, the sequence data utilised at the time of their description were relatively limited. This has justified an urgent need to reconsider the species boundaries for Calonectria based on robust genus-wide phylogenetic analyses. In this study, we utilised 240 available isolates including the ex-types of 128 Calonectria species, and re-sequenced eight gene regions ( act , cmdA , his3 , ITS, LSU, rpb2, tef1 and tub2 ) for them. Sequences for 44 Calonectria species, for which cultures could not be obtained, were downloaded from GenBank. DNA sequence data of all the 169 Calonectria species were then used to determine their phylogenetic relationships. As a consequence, 51 species were reduced to synonymy, two new species were identified, and the name Ca. lauri was validated. This resulted in the acceptance of 120 clearly defined Calonectria spp. The overall data revealed that the genus includes 11 species complexes, distributed across the Prolate and Sphaero-Naviculate Groups known to divide Calonectria . The results also made it possible to develop a robust set of DNA barcodes for Calonectria spp. To accomplish this goal, we evaluated the outcomes of each of the eight candidate DNA barcodes for the genus, as well as for each of the 11 species complexes. No single gene region provided a clear identity for all Calonectria species. Sequences of the tef1 and tub2 genes were the most reliable markers; those for the cmdA , his3 , rpb2 and act gene regions also provided a relatively effective resolution for Calonectria spp., while the ITS and LSU failed to produce useful barcodes for species discrimination. At the species complex level, results showed that the most informative barcodes were inconsistent, but that a combination of six candidate barcodes ( tef1 , tub2 , cmdA , his3 , rpb2 and act ) provided stable and reliable resolution for all 11 species complexes. A six-gene combined phylogeny resolved all 120 Calonectria species, and revealed that tef1 , ...

show abstract

“…candelabrum (av. 60 × 4.5 μm) ( Viégas 1946 , Crous 2002 , Lombard et al. 2010a , 2015b ), which was considered to represent intraspecific variation (Supplementary Table S4 ).…”

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Reconsideration of species boundaries and proposed DNA barcodes for Calonectria

Liu

Wingfield

et al. 2020

Studies in Mycology

123

View full text Add to dashboard Cite

show abstract

“…The affinity of P. eragrostidis is unclear, but it does not belong to the complex of cercosporoid fungi. Viégas (1946) described asperulate conidia and illustrated superficial mycelium, so that this species could also be a member of Cladosporium (subgen. Heterosporium ).…”

Section: Taxonomic Treatmentmentioning

confidence: 99%

Cercosporoid fungi (Mycosphaerellaceae) 3. Species on monocots (Poaceae, true grasses)

2015

View full text Add to dashboard Cite

The third part of a series of monographic treatments of cercosporoid fungi (formerly Cercospora s. lat., Mycosphaerellaceae, Ascomycota) continues with a treatment of taxa on monocots (Liliopsida; Equisetopsida, Magnoliidae, Lilianae), covering asexual and holomorph species with mycosphaerella-like sexual morphs on true grasses (Poaceae), which were excluded from the second part. The species concerned are keyed out, alphabetically listed, described, illustrated and supplemented by references to previously published descriptions, illustrations, and exsiccatae. A key to the recognised genera and a discussion of taxonomically relevant characters was published in the first part of this series. Several species are lecto- or neotypified. The following taxonomic novelties are introduced: Cercospora barretoana comb. nov., C. cymbopogonicola nom. nov., Cladosporium elymi comb. nov., Passalora agrostidicola sp. nov., P. brachyelytri comb. nov., and P. dichanthii-annulati comb. nov.

show abstract

“…Endive has been mentioned as a host of Alternaria spp. in indexes of plant diseases in the USA (Alfieri et al., 1984; Farr et al., 1989), Brazil (Viégas, 1946; Reifschneider et al., 1983; Mendes et al., 1998) and in New Guinea (Shaw, 1984).…”

Section: Introductionmentioning

confidence: 99%