6 research outputs found
New <i>Penicillium</i> and <i>Talaromyces</i> species from honey, pollen and nests of stingless bees
Bezerromycetales and Wiesneriomycetales ord. nov. (class Dothideomycetes), with two novel genera to accommodate endophytic fungi from Brazilian cactus
During a survey of endophytic fungi from the cactus Tacinga inamoena in a Brazilian tropical
dry forest (Caatinga) some undescribed ascomycetous fungi were isolated. These fungi are
characterized by superficial and immersed, globose to subglobose, smooth or hairy
ascomata, bitunicate asci, and muriformly septate, ellipsoidal ascospores. Multigene
phylogenetic analyses using sequences from partial ITS, SSU and LSU nrDNA and the
translation elongation factor 1-alpha gene (tef1) demonstrated a monophyletic clade
accommodating these endophytic fungi in the class Dothideomycetes, closely related to the
order Tubeufiales. Based on morphological features and phylogenetic analyses, these fungi
could not be placed in the order Tubeufiales, in the new order Wiesneriomycetales, or any
other known genus in the class Dothideomycetes. Thus, two new genera (Bezerromyces,
with B. brasiliensis and B. pernambucoensis, and Xiliomyces with X. brasiliensis), a new
family (Bezerromycetaceae) and a new order (Bezerromycetales) are introduced to
accommodate these novel taxa. Our phylogenetic analyses also demonstrated that the clade
accommodating Wiesneriomycetaceae represents a new order, here introduced as
Wiesneriomycetales.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (Process
203132/2014-9), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
and Fundação de Amparo à Ciência e Tecnologia de Pernambuco (FACEPE) of Brazil.http://link.springer.com/journal/115572018-04-30hb2017Microbiology and Plant Patholog
Endophytic fungi from medicinal plant Bauhinia forficata: Diversity and biotechnological potential
New endophytic Toxicocladosporium species from cacti in Brazil, and description of Neocladosporium gen. nov.
Brazil harbours a unique ecosystem, the Caatinga, which belongs to the tropical dry forest biome. This region has an important diversity of organisms, and recently several new fungal species have been described from different hosts and substrates within it. During a survey of fungal endophyte diversity from cacti in this forest, we isolated cladosporium-like fungi that were subjected to morphological and multigene phylogenetic analyses including actA, ITS, LSU, rpb2 and tub2 gene sequences. Based on these analyses we identified two new species belonging to the genus Toxicocladosporium, described here as T. cacti and T. immaculatum spp. nov., isolated from Pilosocereus gounellei subsp. gounellei and Melocactus zehntneri, respectively. To improve the species recognition and assess species diversity in Toxicocladosporium we studied all ex-type strains of the genus, for which actA, rpb2 and tub2 barcodes were also generated. After phylogenetic reconstruction using five loci, we differentiated 13 species in the genus. Toxicocladosporium velox and T. chlamydosporum are synonymized based on their phylogenetic position and limited number of unique nucleotide differences. Six strains previously assigned to T. leucadendri, including the ex-type strain (CBS 131317) of that species, were found to belong to an undescribed genus here named as Neocladosporium gen. nov., with N. leucadendri comb. nov. as type species. Furthermore, this study proposes the actA, ITS, rpb2 and tub2 as main phylogenetic loci to recognise Toxicocladosporium species
Redined families of Dothideomycetes: orders and families incertain in Dothideomycetes
peer reviewedNumerous new taxa and classifications of Dothideomycetes have been published following the last monograph of families of Dothideomycetes in 2013. A recent publication by Honsanan et al. in 2020 expanded information of families in Dothideo- mycetidae and Pleosporomycetidae with modern classifications. In this paper, we provide a refined updated document on orders and families incertae sedis of Dothideomycetes. Each family is provided with an updated description, notes, including figures to represent the morphology, a list of accepted genera, and economic and ecological significances. We also provide phylogenetic trees for each order. In this study, 31 orders which consist 50 families are assigned as orders incertae sedis in Dothideomycetes, and 41 families are treated as families incertae sedis due to lack of molecular or morphological evidence. The new order, Catinellales, and four new families, Catinellaceae, Morenoinaceae Neobuelliellaceae and Thyrinulaceae are introduced. Seven genera (Neobuelliella, Pseudomicrothyrium, Flagellostrigula, Swinscowia, Macroconstrictolumina, Pseudobogoriella, and Schummia) are introduced. Seven new species (Acrospermum urticae, Bogoriella complexoluminata, Dothiorella ostryae, Dyfrolomyces distoseptatus, Macroconstrictolumina megalateralis, Patellaria microspora, and Pseu- domicrothyrium thailandicum) are introduced base on morphology and phylogeny, together with two new records/reports and five new collections from different families. Ninety new combinations are also provided in this paper