Figs 1-6 - uploaded by Jose Dianese
Content may be subject to copyright.
Dothidasteroma psidii on Psidium laruotteanum. 1. Host leaves showing adaxially (left) well developed circular sometimes coalescent ascomata along the leaf ribs, and linear disposition of small ascomata mostly on top of the midrib on the abaxial (right) surface (bar = 1 cm). 2. A group of ascomata seen in SEM (bar = 300 μm). 3. Squash preparation showing an ascoma releasing the asci under pressure (bar = 100 μm). 4. Upper surface of a circular ascoma showing a radiate texture with irregular border with a clearer central area where ascomata usually split open in a stellar fashion (bar = 30 μm). 5. Detailed view of the radiate texture of an ascoma showing the dichotomous proliferation of the upper wall components resulting in a crenate to laciniate margin (bar = 10 μm). 6. Disposition of the asci within an ascoma (bar = 20 μm).
Similar publications
Предложен количественный индекс (R-индекс) приближенной оценки репрезентативности (completeness) фитоценонов, который является модификацией известного индекса биотической дисперсии Коха, основан на использовании зависимости количества видов объединенного списка от числа описаний.
Citations
... As a result, this species was placed under a new suborder Skierkineae and a new rust family Skierkaceae. . Spermogonia and Acacia are unknown [28]. ...
... Note: The specific epithet "divinopolensis" was named after the city Divinopolis, located in the state of Aminas Gerais where the first specimen of the fungus was collected. As described by Dianese et al. [28], this species is differentiated from S. cristata [20] in terms of morphology and the size of the teliospores and basidiospores. ...
The rust genus Skierka belonging to the phylum Basidiomycota was described in 1900 by Raciborski with Skierka canarii as the type species. The published literature on this rust genus reveals its ambiguity in taxonomic placement. It was challenging to taxonomically delineate and precisely identify each species within this genus due to the species sharing some common characteristics. The latest studies based on morphology taxonomy and molecular characteristics, however, have solved this puzzle now and placed this genus in its new family Skierkaceae. To understand all about the genus Skierka, this compilation was carried out to unveil the general characteristics, history, diversity, distribution, ecology, morphology and molecular taxonomy of different species of Skierka. After exploring 14 species of Skierka, it was observed that this genus is distributed in seven plant families in 19 countries all over the world. The genus appears to be well-represented in Asian and South American counties. This rust has not been reported from any European countries to date. The morpho-taxonomy of all species is well studied, but molecular analyses are still required. Only two species of the genus namely S. robusta and S. diploglottidis were identified based molecular analyses. Therefore, further studies should be focused on epitypifying the taxa that are too old and updating their taxonomy based on molecular, biochemical, and physiological aspects along with morphological characteristics. Multiple analytical methods should be considered when dealing with multi-locus datasets. This will increase our understanding of the diversity, distribution, and identification of these rust fungi.
... The contributions of the MCHUB expanded this participation in the new 2003-edition of the Illustrated Genera of Rust Fungi. Cummins & Hiratsuka (2003) accepted 105 genera of Pucciniales, with the significant addition of two new genera from the Cerrado, Batistopsora, type species B. crucis-filii (DIANESE et al. 1993d), and Kimuromyces, type species K. cerradensis (DIANESE et al. 1994d), plus the reinstatement of the genus Mimema based on Mimema venturae . Taxono-mic novelties of Cerrado rust fungi with holotypes deposited in the MCHUB were included in Table 2. ...
... At MCHUB, for the first-time rust fungi were described on two important plant families from the Cerrado: Caryocaraceae, Cerotelium giacomettii, on Caryocar brasiliense; and Aplopsora hennenii on Qualea multiflora, a member of the Vochysiaceae (DIANESE et al. 1993d. A second species of the rare genus Skierka (S. divinopolensis) was described on Matayba guianensis (Sapindaceae) from the Cerrado (DIANESE et al. 1993d, HENNEN et al. 2005. ...
... At MCHUB, for the first-time rust fungi were described on two important plant families from the Cerrado: Caryocaraceae, Cerotelium giacomettii, on Caryocar brasiliense; and Aplopsora hennenii on Qualea multiflora, a member of the Vochysiaceae (DIANESE et al. 1993d. A second species of the rare genus Skierka (S. divinopolensis) was described on Matayba guianensis (Sapindaceae) from the Cerrado (DIANESE et al. 1993d, HENNEN et al. 2005. Another highlight was the complete description of the first Uromyces species (U. hawksworthii) from the Cerrado infecting a plant hemiparasite, Phthirusa stelis (Lotanthaceae) (SOUZA et al. 2015), previously described in its asexual form (Aecidium goyazense) by Hennings (1895). ...
In this review, we present an historic account of the work on the diversity of fungi associated with plants of the Cerrado Biome, including an overview of the studies carried out by the research group of the Mycological Collection connected to the Herbarium UB (Universidade de Brasília), and the rust fungi in Herbarium IBI (Instituto Biológico, São Paulo). The contributions to Cerrado mycology from the early 19th century to the present days were highlighted. Illustrative maps were included to show the geographical distribution of the main fungal groups, associated with native plants of the Cerrado, belonging to the five predominant orders: Pucciniales (rust fungi), Phyllachorales (tar-spot fungi), Capnodiales (cercosporoid fungi: Family Mycosphaerellaceae), as well as Meliolales and Asterinales (black mildews).
... To date, 13 new ascomycete genera have been described, ten as asexual morphs (Dornelo-Silva & Dianese 2004, Pereira-Carvalho et al. 2009b) and three as sexual morphs (Dianese & al. 2001, Pereira-Carvalho 2009a, Pereira-Carvalho et al. 2010). 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. ...
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.
... The phylogenetic hypotheses from the present study recovered Ph. myrtacearum in the Phakopsoraceae. Phakopsora myrtacearum was sister to species of Phakopsora parasitizing Annonaceae and two species of rusts on Annonaceae that were treated in the genus Batistopsora (Dianese et al., 1993). Beenken (2014) examined the species of Phakopsora and Batistopsora on species of Annona. ...
Outbreaks of a rust disease in eucalypt forestry plantations and nurseries in Kenya, Mozambique and South Africa occurred between 2009 and 2014. The pathogen was identified using morphology and molecular phylogenetic analyses as an undescribed species in the Phakopsoraceae. A systematic study based on nuclear ribosomal DNA showed that it is a species of Phakopsora, herein named Phakopsora myrtacearum sp. nov. This new species of rust is the second validly described species on Eucalyptus, along with Puccinia psidii. Phakopsora myrtacearum is distinguished from P. psidii by leaf symptoms, morphology of the urediniospores and a distant phylogenetic placement. Phakopsora myrtacearum has been found on three species of Eucalyptus in Kenya, Mozambique and South Africa, and it may have future negative implications for commercial forestry in these areas.This article is protected by copyright. All rights reserved.
... Notes: Phakopsora crucis-filii is similar to P. cherimolia in that it has densely fine echinulate urediniospores but differs morphologically by the longer periphyses of its uredinia that are fused to a tube. In contrast to Dianese et al. (1993), who described spermogonia of group VI, type 5 (Cummins and Hiratsuka 2003) and young undeveloped aecia, it could be found neither spermogonia nor aecia in the present material. Spermogonia and aecia unknown. ...
... Phakopsora has group VI, type 7 spermogonia insofar as they are known (Cummins and Hiratsuka 2003). In connection with the spermogonia, Dianese et al. (1993) described additionally young undeveloped aecia. In contrast to Dianese's observation, neither spermogonia nor aecia could be found in the present abundant material of B. crucis-filii and B. pistila. ...
... It turned out, after sequencing, that this Aecidium neither belongs to B. pistila nor is related to another Phakopsoraceae but represents a new species, A. verannonae (Fig. 1). Aecidium verannonae has spermogonia (Fig. 5f) of type 5 (Hiratsuka and Hiratsuka 1980) that are similar to those described and illustrated by Dianese et al. (1993) in its dimensions and position in the leaf tissue. Unfortunately, the original material of Dianese et al. (1993) was not available from Brazil to verify with molecular techniques whether the described spermogonia and aecia belong to Batistopsora or possibly to another Aecidium species co-occurring with telia and uredinia of B. crucis-filii on the same leaf. ...
The known species of Pucciniales on the tree genus Annona (Annonaceae), Phakopsora cherimoliae, Batistopsora crucis-filii, B. pistila, as well as the anamorphic species of Aecidium annonae and Uredo rolliniae, were investigated by light microscopy and DNA sequencing. For DNA extraction, N-Phenacylthiazolium bromide (PTB) was used to achieve a higher yield of DNA from herbarium specimens. The phylogenetic analyses were based on the ITS1–5.8S–ITS2 region, partial LSU and SSU of the nuclear rDNA, and the mitochondrial cytochrome oxidase subunit 3. The molecular as well as the morphologic investigations indicated that the genus Batistopsora is synonymous with Phakopsora. The two Batistopsora species appeared in all phylogenies within Phakopsora. They form a monophyletic clade together with P. cherimoliae as well as with the anamorphic Uredo rolliniae and the herein newly described species Phakopsora annonae-sylvaticae. Therefore, the following new combinations have been made: Phakopsora crucis-filii, P. pistila and P. rolliniae. Phakopsora crucis-filii and P. pistila could not be distinguished by the used sequences but are morphologically and ecologically well separated. This contradiction is discussed. Phakopsora crucis-filii is firstly reported as a pathogen on the fruit tree Annona squamosa. The species show host preferences to species groups of Annona at the sub-generic level and distribution patterns similar to those of their hosts. In comparison with the rust fungal genus Dasyspora, which occurs on Xylopia (Annonaceae) also in the Neotropics, the Phakopsora spp. on Annona show similar phylogeographical patterns. The redetermination of the host plants has shown that A. annonae does not occur on Annonaceae but on Diospyros hispida (Ebenaceae). Therefore, the new species, Aecidium verannonae, has to be described for the Aecidium species, which occurs really on Annona. It did not appear to be closely related to the Phakopsoraceae in the phylogenetic analysis. An identification key for all known rust fungi on Annona is given.
... The morphology of that species is unclear. According to the Latin description (Dianese et al. 1993) it has 2-3 layers of teliospores and uredinia lacking a peridium but with hymenial paraphyses. In the English description, 2-4 layers of teliospores are described and uredinia without paraphyses but with a hyphal peridium. ...
This paper presents new species, combinations, national reports and host records for the South African rust fungi (Uredinales/Pucciniales).
Endophyllum mpenjatiense on cf. Hibiscus sp. (Malvaceae), Phakopsora combretorum (anamorph Uredo combreticola) on the new host Combretum apiculatum (Combretaceae) and Uredo sekhukhunensis on Ziziphus mucronata (Rhamnaceae) are described as new species. Dietelia cardiospermi and E. metalasiae are proposed as new combinations to replace Aecidium cardiospermi on Cardiospermum halicacabum (Sapindaceae) and A. metalasiae on Metalasia spp. (Asteraceae), respectively. Four species are new records for South Africa: Crossopsora antidesmae-dioicae on Antidesma venosum (Euphorbiaceae), Phakopsora ziziphi-vulgaris on Z. mucronata, and Uromyces cypericola and Puccinia subcoronata, both on a new host, Cyperus albostriatus (Cyperaceae). The record of P. subcoronata is the first one from outside the New World. Puccinia scirpi is reported as a possible addition to the South African rust fungi. New host records and observations are presented for Pucciniastrum agrimoniae that is recorded on two new host genera and species, Cliffortia odorata and Leucosidea sericea (Rosaceae), Uromyces cypericola whose urediniospores are described for the first time, Phakopsora stratosa in that spermogonia and Uredo-like aecia were discovered, and for Sphaerophragmium dalbergiae in that characters of the urediniospores are re-evaluated. A lectotype is selected for Aecidium garckeanum and spermogonia are reported for this rust for the first time. The rust fungi of Ehrharta (Poaceae) are discussed and critically evaluated in the light of spore morphology and host species.
... 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, the fungi associated with the vegetation of the Brazilian savanna, the cerrado, has been a focus of the mycological research at the University of Brasília. These studies have resulted in the description of new ascomycetes and their anamorphs (Dianese et al. 1997;Dianese 2000;Pereira-Carvalho & Dianese 2006), and rust fungi (Dianese et al. 1993;Cummins & Hiratsuka 2003) from this neotropical ecosystem. During our studies, many collections were often found to have microfungi associated with the trichomes on trichome-rich leaves, many of which were apparently inedited species, as previously shown by Dornelo-Silva & Dianese (2004). ...
Eight monotypic hyphomycete genera new to science are described from the trichomes of native plants growing in the cerrado of Brazil: Trichomatoclava cerradensis, Echinoconidiophorum cerradense, Globoconidiopsis cerradensis, Globoconidium cerradense, Helminthosporiomyces cerradensis, Trichomatosphaera [corrected] cerradensis , Phragmoconidium cerradense, and Vesiculohyphomyces cerradensis gens. spp. nov. Two of the new genera were found on hosts belonging in Myrtaceae, and one of each of the following families: Icacinaceae, Malphigiaceae, Fabaceae, Dilleniaceae, Chrysobalanaceae, and Caryocaraceae. These discoveries suggest that the trichomes of neotropical plants are an unexplored source of novel fungal diversity, and merit more attention in biodiversity surveys.
... Ravenelia hassleri tem urediniósporos com seis poros germinativos e dimensões diferentes além de formar teliósporos completamente lisos. A espécie foi descrita recentemente (Dianese et al., 1993), sendo aqui complementarmente ilustrada. Espermogônios e écios não-vistos. ...
... Os urédios e télios são anfígenos, ao contrário da descrição original onde estes foram considerados hipófilos e epífilos, respectivamente (Dianese et al., 1993). Além disso, as paráfises estão sempre associadas aos urédios e não aos télios e os urediniósporos apresentam quatro a seis poros germinativos bizonados, geralmente seis e não dois a quatro poros germinativos conforme Dianese et al. (1993). ...
... Os urédios e télios são anfígenos, ao contrário da descrição original onde estes foram considerados hipófilos e epífilos, respectivamente (Dianese et al., 1993). Além disso, as paráfises estão sempre associadas aos urédios e não aos télios e os urediniósporos apresentam quatro a seis poros germinativos bizonados, geralmente seis e não dois a quatro poros germinativos conforme Dianese et al. (1993). A presença de nervuras em torno das células dos teliósporos é facilmente vista ao MEV. ...
Oito espécies de Ravenelia descritas anteriormente foram revisadas e acrescentadas ilustrações inéditas das características morfológicas de alguns desses fungos causadores de ferrugem em Leguminosae. As espécies de Ravenelia estudadas foram: Ravenelia bezerrae sobre Enterolobium ellipticum ; R. densifera sobre Senna silvestris; R. dieteliana sobre Calliandra dysantha. var. dysantha; R. geminipora sobre Platymenia reticulata; R. lonchocarpi sobre Lonchocarpus campestris; R. mimosae-sensitivae sobre Mimosa radula var. imbricata; R. pileolarioides sobre Caesalpinia pyramydales e R. santos-costae, sobre Calliandra dysantha.
