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Cercospora mimosae-sensitivae on Mimosa sensitiva. Lesions sparsely lesions distributed on two leaflets (top right) (bar = 10 mm); fascicle of conidiophores (bar = 10 μm) with details of the conidiogenous loci to the left (bar = 5 μm) and a surrounding sample of conidia (bar = 10 μm). Based on the holotype (UB Mycol. Col. 8303).
Source publication
The genus Passalora is divided into the morphological sections Passalora, Phaeoramularia, Mycovellosiella and Pseudophaeoisariopsis. New cercosporoid hyphomycetes are described from the Brazilian Cerrado on native plants of the subfamilies Mimosaoideae (Cercospora mimosae-sensitivae), Faboideae (Passalora sect. Mycovellosiella: P. acosmii), and Cae...
Context in source publication
Context 1
... Based on unthickened, non-pigmented conidiogenous loci and conidial hila, this species has to be assigned to Pseudocercospora. Due to the structure of the conidiomata, it resembles P. vitis, the type species, characterized by conidiophores aggregated in true synnemata. However, the new species differs from all synnematous Pseudocercospora spp. Fig. 173 ...
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Citations
... Pseudocercospora caesalpiniicola [≡ Phaeoisariopsis caesalpiniae J.M. Yen et al.] also forms large stromata (40-75 µm diam.) but is distinguished from P. lysidices by indistinct leaf spots, synnematous and hypogenous conidiomata, and longer and broader conidiophores (20-150 × 3-5 µm) and conidia (20-110 × 2.5-4.5 µm) (Yen et al. 1982, Hernández-Gutiérrez & Dianese 2009. ...
Pseudocercospora lysidices on Lysidice rhodostegia (Fabaceae subfam. Caesalpinioideae) is introduced as a new species, based on Chinese specimens previously misidentified as “Pseudocercospora lathyri.” The new species is described, illustrated, and compared with other Pseudocercospora species on caesalpiniaceous hosts. The specimens examined are deposited in the Herbarium of the Institute of Microbiology, Chinese Academy of Sciences, Beijing (HMAS).
... During the last decades numerous Pseudocercospora spp. have been described from Brazilian biomes such as the Caatinga (semi-arid) , Braun & Freire 2002, 2004, the Atlantic rainforest -Mata Atlântica (Rocha et al. 2008, Parreira et al. 2014, and especially from the Cerrado (Furlanetto & Dianese 1999, Hernández-Gutiérrez & Dianese 2009, 2014. With a few exceptions (e.g., Crous et al. 2013a, Rocha et al. 2013, Parreira et al. 2014, publications dealing with Brazilian Pseudocercospora spp. ...
... clustered in the same clade with P. exilis described from Chamaecrista orbiculata (Fig. 1, clade 1). Although both species form synnemata and occur on the same host genus, they were considered to be morphologically distinct by Hernández-Gutiérrez & Dianese (2009). Pseudocercospora exilis has percurrently proliferating conidiogenous cells, longer conidiophores (149-332 µm) and longer conidia (38-103 µm) (Hernández-Gutiérrez & Dianese 2009). ...
... known to occur on the host genus Chamaecrista, namely P. chamaecristae, P. chamaecristigena, P. exilis, P. luzianiensis and P. nigricans (Farr & Rossman 2015). Pseudocercospora chamaecristae, P. chamaecristigena, P. exilis and P. luzianiensis are easily separated on morphological basis from P. planaltinensis by having different conidial shapes and wider conidia with longer synnematous conidiophores (Braun & Freire 2002, Hernández-Gutiérrez & Dianese 2009. Pseudocercospora nigricans has conidia similar to those of P. planaltinensis. ...
Although the genus Pseudocercospora has a worldwide distribution, it is especially diverse in tropical and subtropical countries. Species of this genus are associated with a wide range of plant species, including several economically relevant hosts. Preliminary studies of cercosporoid fungi from Brazil allocated most taxa to Cercospora, but with the progressive refinement of the taxonomy of cercosporoid fungi, many species were relocated to or described in Pseudocercospora. Initially, species identification relied mostly on morphological features, and thus no cultures were preserved for later phylogenetic comparisons. In this study, a total of 27 Pseudocercospora spp. were collected, cultured, and subjected to a multigene analysis. Four genomic regions (LSU, ITS, tef1 and actA) were amplified and sequenced. A multigene Bayesian analysis was performed on the combined ITS, actA and tef1 sequence alignment. Our results based on DNA phylogeny, integrated with ecology, morphology and cultural characteristics revealed a rich diversity of Pseudocercospora species in Brazil. Twelve taxa were newly described, namely P. aeschynomenicola, P. diplusodonii, P. emmotunicola, P. manihotii, P. perae, P. planaltinensis, P. pothomorphes, P. sennae-multijugae, P. solani-pseudocapsicicola, P. vassobiae, P. wulffiae and P. xylopiae. Additionally, eight epitype specimens were designated, three species newly reported, and several new host records linked to known Pseudocercospora spp.
... Th e type species of the latter genus and other species with unthickened conidiogenous loci proved to belong to Pseudocercospora ). Th us, the new species, which is clearly separated from Passalora acosmii A. Hern.-Gut & Dianese, also found on A. subelegans (Hernández-Gutiérrez & Dianese 2009), is here accommodated in Pseudocercospora s. str. Th ere is no morphologically comparable species on allied hosts of the Amorpheae (dalbergioid clade, see Bruneau et al. 2013). ...
... In addition, two new genera of rust fungi, Batistopsora and Kimuromyces (Cummins & Hiratsuka 2003, Dianese et al. 1993a, 1995, have been described and a third, Mimema, has been reinstated (Cummins & Hiratsuka 2003, Dianese et al. 1994. Several cercosporoid fungi , Dornelo-Silva et al. 2007, Furlanetto & Dianese 1999, Hernandez-Gutierrez & Dianese 2008, 2009, Inacio & Dianese 2006, Medeiros & Dianese 1994 have been described and other new ascomycetes have been included in other publications (Dornelo-Silva & Dianese 2003, Inacio et al. 2011, Soares & Dianese 2014, Souza et al. 2008. This paper expands the number of genera among the asexual ascomycete morphs from the Cerrado, with the description and illustration of two new genera, Phaeostilbelloides and Velloziomyces. ...
Phaeostilbelloides velloziae gen. & sp. nov. and Velloziomyces ramosiconidialis gen. & sp. nov. are described and illustrated. Both new fungi infect Vellozia squamata, endemic to the Brazilian Cerrado.
... This new concept was also supported by first molecular sequence analyses (Crous et al. 2000(Crous et al. , 2001. Hernández-Gutiérrez & Dianese (2009) divided Passalora in sections, viz. sect. ...
Cercosporoid fungi (former Cercospora s. lat.) represent one of the largest groups of hyphomycetes belonging to the Mycosphaerellaceae (Ascomycota). They include asexual morphs, asexual holomorphs or species with mycosphaerella-like sexual morphs. Most of them are leaf-spotting plant pathogens with special phytopathological relevance. The only monograph of Cercospora s. lat., published by Chupp (1954), is badly in need of revision. However, the treatment of this huge group of fungi can only be accomplished stepwise on the basis of treatments of cercosporoid fungi on particular host plant families. The present first part of this series comprises an introduction, a survey on currently recognised cercosporoid genera, a key to the genera concerned, a discussion of taxonomically relevant characters, and descriptions and illustrations of cercosporoid species on other fungi (mycophylic taxa), Pteridophyta and Gymnospermae, arranged in alphabetical order under the particular cercosporoid genera, which are supplemented by keys to the species concerned. The following taxonomic novelties are introduced: Passalora austroplenckiae comb. nov., P. backmanii comb. nov., P. condensata comb. nov., P. gymnocladi comb. nov., P. thalictri comb. nov., Pseudocercospora davalliicola sp. nov., P. chamaecyparidis comb. nov., P. cratevicola nom. nov., P. gleicheniae comb. nov., P. lygodiicola sp. nov., P. lygodiigena nom. nov., P. nephrolepidigena sp. nov., P. paraexosporioides sp. nov., P. pini-densiflorae var. montantiana comb. et stat. nov., P. pteridigena sp. nov., P. ptisanae sp. nov., P. sciadopityos sp. nov., P. subramanianii nom. nov., P. thujina comb. nov., and Zasmidium australiense comb. nov.
... The new species here described were treated as belonging to sections Mycovellosiella and Phaeoramularia of the genus Passalora, as established by Hernández-Gutiérrez and Dianese (2009). ...
Four new Passalora species were found on leaves of Cerrado native plants of the genus Peixotoa (Malpighiaceae). Two of the new Passalora species (P. peixotae-reticulatae and P. cerradensis) belong in Section Mycovellosiella, while P. peixotoae-goianae and P.brasilianensis belong in Section Phaeoramularia.
... Since 1993 over 100 new fungi from the Brazilian Cerrado have been described (Dianese et al. 1997, Dianese 2000, Inácio & Dianese 1998, 2006, including major finds among the cercosporoid fungi (Inácio & Dianese 1999a, Dornelo-Silva et al. 2007, Hernandez-Gutiérrez & Dianese 2008, 2009, two new genera of rust fungi (Dianese et al. 1993(Dianese et al. , 1995, three new ascomycete genera (Dianese et al. 2001, Pereira-Carvalho et al. 2009a, 2010, and eleven new genera of trichomatous hyphomycetes (Dornelo-Silva & Dianese 2004, Pereira-Carvalho et al. 2009b. ...
A new Dothidasteroma species found on leaves of Psidium laruotteanum collected in the Brazilian Cerrado is described, illustrated, and designated as Dothidasteroma psidii.
... Since 1993 over 100 new fungi from the Brazilian Cerrado have been described (Dianese et al. 1997, Dianese 2000, Inácio & Dianese 1998, 2006, including major finds among the cercosporoid fungi (Inácio & Dianese 1999a, Dornelo-Silva et al. 2007, Hernandez-Gutiérrez & Dianese 2008, 2009, two new genera of rust fungi (Dianese et al. 1993(Dianese et al. , 1995, three new ascomycete genera (Dianese et al. 2001, Pereira-Carvalho et al. 2009a, 2010, and eleven new genera of trichomatous hyphomycetes (Dornelo-Silva & Dianese 2004, Pereira-Carvalho et al. 2009b. ...
A new Dothidasteroma species found on leaves of Psidium laruotteanum collected in the Brazilian Cerrado is described, illustrated, and designated as Dothidasteroma psidii.
... Since 1993 over 100 new fungi from the Brazilian Cerrado have been described (Dianese et al. 1997, Dianese 2000, Inácio & Dianese 1998, 2006), including major finds among the cercosporoid fungi (Inácio & Dianese 1999a, Dornelo-Silva et al. 2007, Hernandez-Gutiérrez & Dianese 2008, 2009), two new genera of rust fungi ( Dianese et al. 1993Dianese et al. , 1995, three new ascomycete genera ( Dianese et al. 2001, Pereira-Carvalho et al. 2009a, 2010, and eleven new genera of trichomatous hyphomycetes (Dornelo-Silva & Dianese 2004, Pereira-Carvalho et al. 2009b). ...
Cercosporoid fungi (Mycosphaerellaceae, Mycosphaerellales, Ascomycota) are one of the largest and most diverse groups of hyphomycetes causing a wide range of diseases of economically important plants as well as of plants in the wild. Although more than 6000 species are known for this group, the documentation of this fungal group is far from complete. Especially in the tropics, the diversity of cercosporoid fungi is poorly known. The present study aims to identify and characterise cercosporoid fungi collected on host plants belonging to Fabaceae in Benin, West Africa. Information on their morphology, host species and DNA sequence data (18S rDNA, 28S rDNA, ITS and tef1 ) is provided. DNA sequence data were obtained by a simple and non-culture-based method for DNA isolation which has been applied for cercosporoid fungi for the first time in the context of the present study. Among the loci used for the phylogenetic analysis, tef1 provided the best resolution together with the multigene dataset. Species delimitation in many cases, however, was only possible by combining molecular sequence data with morphological characteristics. Based on forty specimens recently collected in Benin, 18 species are presented with morphological descriptions, illustrations and sequence data. Among these, six species in the genus Cercospora and two species in Pseudocercospora are proposed as species new to science. The newly described species are Cercospora (C.) beninensis on Crotalaria macrocalyx , C. parakouensis on Desmodium tortuosum , C. rhynchophora on Vigna unguiculata , C. vignae - subterraneae on Vigna subterranea , C. tentaculifera on Vigna unguiculata , C. zorniicola on Zornia glochidiata , Pseudocercospora sennicola on Senna occidentalis and Pseudocercospora tabei on Vigna unguiculata . Eight species of cercosporoid fungi are reported for Benin for the first time, three of them, namely C. cf. canscorina, C. cf. fagopyri and C. phaseoli-lunati are new for West Africa. The presence of two species of cercosporoid fungi on Fabaceae previously reported from Benin, namely Nothopassalora personata and Passalora arachidicola , is confirmed.
