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1.
To understand the isolation and classification state of actinobacterial species with valid names for Korean indigenous isolates, isolation source, regional origin, and taxonomic affiliation of the isolates were studied. At the time of this writing, the phylum Actinobacteria consisted of only one class, Actinobacteria, including five subclasses, 10 orders, 56 families, and 330 genera. Moreover, new taxa of this phylum continue to be discovered. Korean actinobacterial species with a valid name has been reported from 1995 as Tsukamurella inchonensis isolated from a clinical specimen. In 1997, Streptomyces seoulensis was validated with the isolate from the natural Korean environment. Until Feb. 2016, 256 actinobacterial species with valid names originated from Korean territory were listed on LPSN. The species were affiliated with three subclasses (Acidimicrobidae, Actinobacteridae, and Rubrobacteridae), four orders (Acidimicrobiales, Actinomycetales, Bifidobacteriales, and Solirubrobacterales), 12 suborders, 36 families, and 93 genera. Most of the species belonged to the subclass Actinobacteridae, and almost of the members of this subclass were affiliated with the order Actinomycetales. A number of novel isolates belonged to the families Nocardioidaceae, Microbacteriaceae, Intrasporangiaceae, and Streptomycetaceae as well as the genera Nocardioides, Streptomyces, and Microbacterium. Twenty-six novel genera and one novel family, Motilibacteraceae, were created first with Korean indigenous isolates. Most of the Korean indigenous actionobacterial species were isolated from natural environments such as soil, seawater, tidal flat sediment, and fresh-water. A considerable number of species were isolated from artificial resources such as fermented foods, wastewater, compost, biofilm, and water-cooling systems or clinical specimens. Korean indigenous actinobacterial species were isolated from whole territory of Korea, and especially a large number of species were from Jeju, Gyeonggi, Jeonnam, Daejeon, and Chungnam. A large number of novel actinobacterial species continue to be discovered since the Korean government is encouraging the search for new bacterial species and researchers are endeavoring to find out novel strains from extreme or untapped environments.  相似文献   

2.
The names of the Cossidae taxa Garuda Yakovlev, 2004 (type species Garuda galina Yakovlev, 2004) and Nirvana Yakovlev, 2004 (type species Nirvana buddhi Yakovlev, 2004) described by the author from various Eurasian regions are substituted by new names due to the former having been previously preoccupied. The name Garuda Yakovlev, 2004: 375 (type species Garuda galina Yakovlev, 2004) is proposed to be substituted for Garrudiella Yakovlev nom. n., since Garuda was used by Scherer (Scherer 1969: 28) while describing a new species in the family Chrysomelidae (Coleoptera) (type species Garuda hindustanica Scherer 1969).  相似文献   

3.
Six new genera and eight new species are described from South and Central Americas, South Africa, and Southeastern Asia. Illustrations of the male genitalia of the type species of the genera Duiliopsis Bergevin and Perindus Emeljanov are given. The generic name Duiliopsis is synonymized with Duilius Stål. The synonymy of the generic name Hemitropis Fieber with Duilius is supported.  相似文献   

4.
The authors have examined the nomenclatural status of the generic names proposed byF. M. Opiz in his work “Seznam Rostlin Květeny ?eské” (A list of Bohemian plants) and of names which have been regarded in later literature as first published in that book. Many of the generic names proposed byOpiz in his Seznam were not in fact validly published in that book; on the other hand the valid publication of several names is conditioned by various types of indirect indication of an earlier effectively published diagnosis. Of the 80 generic names analysed 36 were validly published byOpiz in various works (not all in the Seznam), but only 13 to 15 are legitimate in the sense of the International Code 1966. The legitimate names are:Cenekia, Ceranthe, Duschekia, Euacer, Jovibarba, Kablikia, Lamiopsis, Liebichia, Plethiosphace, Pseudolysimachion, Spirocarpus, Swida, Weitenwebera and perhapsMargarospermum andNenningia. Of these legitimate names four are considered by the authors as correct i.e.Duschekia, Jovibarba, Pseudolysimachion andSwida; in the Appendix some new combinations with these generic names are proposed. In the text some mistakes concerningOpiz's generic names in Index Kewensis are corrected. For 14 ofOpiz's generic names the lectotypes are seleced. A special notice is given to the nomenclatural problems of the group “Avenastrum”.  相似文献   

5.
The phylum Neocallimastigomycota contains eight genera (about 20 species) of strictly anaerobic fungi. The evolutionary relationships of these genera are uncertain due to insufficient sequence data to infer their phylogenies. Based on morphology and molecular phylogeny, thirteen isolates obtained from yak faeces and rumen digesta in China were assigned to Neocallimastix frontalis (nine isolates), Orpinomyces joyonii (two isolates) and Caecomyces sp. (two isolates), respectively. The phylogenetic relationships of the eight genera were evaluated using complete ITS and partial LSU sequences, compared to the ITS1 region which has been widely used in this phylum in the past. Five monophyletic lineages corresponding to six of the eight genera were statistically supported. Isolates of Caecomyces and Cyllamyces were present in a single lineage and could not be separated properly. Members of Neocallimastigomycota with uniflagellate zoospores represented by Piromyces were polyphyletic. The Piromyces-like genus Oontomyces was consistently closely related to the traditional Anaeromyces, and separated the latter genus into two clades. The phylogenetic position of the Piromyces-like genus Buwchfawromyces remained unresolved. Orpinomyces and Neocallimastix, sharing polyflagellate zoospores, were supported as sister genera in the LSU phylogeny. Apparently ITS, specifically ITS1 alone, is not a good marker to resolve the generic affinities of the studied fungi. The LSU sequences are easier to align and appear to work well to resolve generic relationships. This study provides a comparative phylogenetic revision of Neocallimastigomycota isolates known from culture and sequence data.  相似文献   

6.
Phylogenetic analyses of nuclear rDNA spacers (ITS and ETS) from Azorella and five closely related genera confirm earlier plastid results indicating that Azorella, Huanaca, Mulinum, and Schizeilema are all polyphyletic, and that the monotypic genus Laretia is nested within one of the six subclades of Azorella. Only Stilbocarpa is monophyletic, but that genus is embedded within a larger clade that includes representatives of three other genera (Azorella, Huanaca, and Schizeilema). Both nuclear and plastid datasets identify the same 10 clades, but the placement of these clades remains unstable. A new classification is presented in which these six genera are reduced to a single genus (Azorella) comprising 58 species arranged in 10 sections, one of which is newly described here (Azorella sect. Ranunculus), and one lectotypified (Azorella sect. Glabratae). A total of 13 new combinations are made (A. albovaginata, A. allanii, A. boelckei, A. burkartii, A. colensoi, A. echegarayi, A. echinus, A. hallei, A. lyallii, A. polaris, A. prolifera, A. robusta, A. ulicina), along with three replacement names (A. atacamensis, A. ruizii, A. schizeilema). For each of the 58 accepted species, a full synonymy is provided along with geographic ranges (and nomenclatural notes, where useful).  相似文献   

7.

Background

The genus Aloe is renowned for its medicinal and cosmetic properties and long history of use. Sixty-three Aloe species occur in Kenya, of which around 50 % are endemic. Several species of aloes are threatened with extinction and knowledge about their use is of major importance for sound conservation strategies. The main aims of this study were to assess the biocultural value of Aloe in Kenya by documenting local uses of aloes and evaluating how the vernacular names reflect the relative importance in different ethnic groups.

Methods

Ethnobotanical and ethnotaxonomical data were collected using field observations and semi-structured interviews. Information was collected by interviewing 63 respondents from nine different ethnic groups, representing different ages, gender and occupations. Statistical analyses were performed using R version 3.1.2.

Results

A total of 19 species of Aloe were found in the study area, of which 16 were used. On the generic level Aloe was easily distinguished. At species level, the local and scientific delimitation were almost identical for frequently used taxa. Aloe secundiflora, with 57 unique use records was the most important species. The two most frequently mentioned Aloe treatments, were malaria and poultry diseases. In our study area neither age nor gender had a significant influence on the level of knowledge of Aloe use. Finally, no correlation was found between extent of use and people’s perception of decrease in local aloe populations. The aloes are highly appreciated and are therefore propagated and transported over large areas when people relocate.

Conclusion

Biocultural value is reflected in the ethnotaxonomy of Aloe in Kenya. Different ethnic groups recognise their most-valued Aloe at the genus level as “the aloe” and add explanatory names for the other species, such as the “spotted aloe” and the “one-legged aloe”. Widespread species of Aloe have the highest number of uses. There is no obvious correlation with high use and decrease in abundance of aloes locally, and we found no compelling evidence for local uses causing devastating damage to populations of the 19 species in use, whereas habitat loss and commercial harvesting appear to be of urgent concern for these important plants.
  相似文献   

8.
Seventy-three species from 17 genera of Cyperaceae were studied with the aim of identifying and confirming those species with Kranz anatomy. Among the species studied, 36 exhibited Kranz anatomy; 37 did not. Of the four types of Kranz anatomy recognized in Cyperaceae, three were encountered: the chlorocyperoid type in the genera Cyperus, Kyllinga, Lipocarpha, Pycreus, and Remirea; the fimbristyloid type in Abildgaardia, Bulbostylis, and Fimbristylis; and the rhynchosporoid type in Rhynchospora. Non-Kranz anatomy was confirmed in species of the following genera: Becquerelia, Calyptrocarya, Cyperus, Diplacrum, Eleocharis, Fuirena, Hypolytrum, Pleurostachys, Rhynchospora, and Scleria. The anatomical data obtained corroborate earlier studies of species of Cyperaceae as to the presence of Kranz anatomy and the anatomical types in several species and the “Kranzkette” pattern in Cyperus ligularis and Cyperus pohlli.  相似文献   

9.
Phylogenetic analyses of a combined DNA data matrix containing ITS, LSU, rpb2 and tub2 sequences of representative Xylariales revealed that the genus Barrmaelia is a well-defined monophylum, as based on four of its described species (B. macrospora, B. moravica, B. oxyacanthae, B. rhamnicola) and the new species B. rappazii. The generic type of Entosordaria, E. perfidiosa, is revealed as the closest relative of Barrmaelia, being phylogenetically distant from the generic type of Clypeosphaeria, C. mamillana, which belongs to Xylariaceae sensu stricto. Entosordaria and Barrmaelia are highly supported and form a distinct lineage, which is recognised as the new family Barrmaeliaceae. The new species E. quercina is described. Barrmaelia macrospora, B. moravica and B. rhamnicola are epitypified and E. perfidiosa is lecto- and epitypified. Published sequences of Anthostomella and several Anthostomella-like species from the genera Alloanthostomella, Anthostomelloides, Neoanthostomella, Pseudoanthostomella and Pyriformiascoma are evaluated, demonstrating the necessity of critical inspection of published sequence data before inclusion in phylogenies. Verified isolates of several species from these genera should be re-sequenced to affirm their phylogenetic affinities. In addition, the generic type of Anthostomella should be sequenced before additional generic re-arrangements are proposed.  相似文献   

10.
Bacterial species of Bacillus, Lactobacillus, and Bifidobacterium in the intestinal tract have been used as probiotics. Selections for probiotic candidates by the culture-based approaches are time-consuming and labor-consuming. The aim of this study was to develop a new method based on sequencing strategies to select the probiotic Bacillus, Lactobacillus, and Bifidobacterium. The Illumina-based sequencing strategies with different specific primers for Bacillus, Clostridium, and Bifidobacterium were applied to analyze diversity of the genera in goat feces. The average number of different Bacillus, Clostridium, and Bifidobacterium OTUs (operational taxonomic units) at the 97% similarity level ranged from 1922 to 63172. The coverage index values of Bacillus, Clostridium, and Bifidobacterium calculated from the bacterial OTUs were 0.89, 0.99, and 1.00, respectively. The most genera of Bacillus (37.9%), Clostridium (53%), and Bifidobacterium (99%) were detected in goat feces by the Illumina-based sequencing with the specific primers of the genera, respectively. Higher phylogenetic resolutions of the genera in goat feces were successfully established. The results suggest that the selection for probiotic Bacillus, Clostridium, and Bifidobacterium based on the Illumina sequencing with their specific primers is reliable and feasible, and the core Bacillus, Clostridium, and Bifidobacterium species of healthy goats possess the potentials as probiotic microbial consortia.  相似文献   

11.
12.
13.
Four new species of Mariannaea were described in this paper, namely M. chlamydospora, M. cinerea, M. fusiformis, and M. lignicola. Mariannaea chlamydospora is characterized by its cream-colored, zonate colonies on PDA, smooth conidiophores, fusiform conidia, and abundant chlamydospores. Mariannaea cinerea forms grey colonies and ellipsoidal to subglobose conidia. Mariannaea fusiformis forms purple colonies and fusiform to subglobose conidia. Mariannaea lignicola has brown conidiophores and broad hyphae. The molecular phylogeny was inferred using ITS, LSU, and TUB-2 loci. The type species of Mariannaea (M. elegans) is epitypified. The variety M. elegans var. punicea is raised to species rank. Mariannaea clavispora is excluded from Mariannaea because of its cylindrical phialides, straight conidial chains and deviating phylogenetic affinity. Mariannaea nipponica did not fit well the generic concept of Mariannaea based on their morphological characters, and its generic placement remains uncertain. A key to the currently accepted 15 species of Mariannaea is provided.  相似文献   

14.
A multigene phylogeny was constructed, including a significant number of representative species of the main lineages in the Xylariaceae and four DNA loci the internal transcribed spacer region (ITS), the large subunit (LSU) of the nuclear rDNA, the second largest subunit of the RNA polymerase II (RPB2), and beta-tubulin (TUB2). Specimens were selected based on more than a decade of intensive morphological and chemotaxonomic work, and cautious taxon sampling was performed to cover the major lineages of the Xylariaceae; however, with emphasis on hypoxyloid species. The comprehensive phylogenetic analysis revealed a clear-cut segregation of the Xylariaceae into several major clades, which was well in accordance with previously established morphological and chemotaxonomic concepts. One of these clades contained Annulohypoxylon, Hypoxylon, Daldinia, and other related genera that have stromatal pigments and a nodulisporium-like anamorph. They are accommodated in the family Hypoxylaceae, which is resurrected and emended. Representatives of genera with a nodulisporium-like anamorph and bipartite stromata, lacking stromatal pigments (i.e. Biscogniauxia, Camillea, and Obolarina) appeared in a clade basal to the xylarioid taxa. As they clustered with Graphostroma platystomum, they are accommodated in the Graphostromataceae. The new genus Jackrogersella with J. multiformis as type species is segregated from Annulohypoxylon. The genus Pyrenopolyporus is resurrected for Hypoxylon polyporus and allied species. The genus Daldinia and its allies Entonaema, Rhopalostroma, Ruwenzoria, and Thamnomyces appeared in two separate subclades, which may warrant further splitting of Daldinia in the future, and even Hypoxylon was divided in several clades. However, more species of these genera need to be studied before a conclusive taxonomic rearrangement can be envisaged. Epitypes were designated for several important species in which living cultures and molecular data are available, in order to stabilise the taxonomy of the Xylariales.  相似文献   

15.
Four new species and two new host records of Torula (Torulaceae, Pleosporales) are described and illustrated from herbaceous litter collected in Italy and Thailand. The new species possess colony, conidiophore and conidial characteristics that fit within the generic concept of Torula. Detailed morphological observations clearly demarcate four of these from extant species and are hence described as new (Torula chiangmaiensis sp. nov., Torula pluriseptata sp. nov., Torula chromolaenae sp. nov., Torula mackenziei sp. nov.). Details of asexual morphs are described, and justifications for establishing these new species are provided. The nuclear are sequenced ribosomal RNA genes as well as protein coding genes to infer phylogenetic relationships and discuss phylogenetic affinities with morphologically similar species. Our morphological distinction is further supported by phylogenetic discrimination. In particular, phylogenies depict a close relationship of Torula chiangmaiensis and T. pluriseptata to T. hollandica, while T. chromolaenae and T. mackenziei constitute an independent phylogenetic lineage basal to T. herbarum and T. ficus. Torula ficus and T. masonii are also described and their phylogeny investigated as new host records from Bidens pilosa and Iris germanica, respectively.  相似文献   

16.
Fungi associated with black point were isolated from three highly susceptible wheat genotypes in the North China Plain. The 21 isolates represented 11 fungal genera. The most prevalent genera were Alternaria (isolation frequency of 56.7%), Bipolaris (16.1%), and Fusarium (6.0%). The other eight genera were Curvularia, Aspergillus, Cladosporium, Exserohilum, Epicoccum, Nigrospora, Penicillium, and Ulocladium; their isolation frequencies ranged from 0.8 to 4.8%. The pathogenicity of the isolates was individually assessed in the greenhouse by inoculating wheat plants with spore suspensions. Ten of the 21 isolates caused significantly higher incidences of black point than that the controls. These isolates belonged to eight fungal species (A. alternata, B. sorokiniana, B. crotonis, B. cynodontis, C. spicifera, F. equiseti, E. rostratum, and E. sorghinum) based on morphological traits and phylogenetic analysis. The average incidences of black point in the eight fungal species were 32.4, 54.3, 43.0, 41.9, 37.2, 38.8, 50.1, and 34.1%, respectively. B. sorokiniana and A. alternata were determined to be the most important pathogens in the North China Plain based on fungal prevalence and symptom severity. This study is the first to identify E. rostratum as a major pathogen causing black point in wheat.  相似文献   

17.
Three endemic Caribbean praying mantis genera with a complex taxonomic history were recently discovered to be part of a lineage that colonized the Caribbean region during the Cretaceous period (Svenson & Rodrigues, Proc R Soc B Biol Sci 284, 2017). In all classification systems proposed up to now, the three genera, Callimantis, Epaphrodita, and Gonatista, were never considered as close relatives, a reflection of their divergent morphology. More recently, the genus Brancsikia was placed with Epaphrodita in a family based on the similarity of camouflage-related morphology. To address recent phylogenetic results that do not track current classification, we compared the morphology of the three Caribbean genera with each other and representative members of traditional or current family groups. Our morphological analysis of external and male genital characters provides strong support for the Caribbean lineage despite the divergent morphological evolution present in the three genera. We raise this Caribbean lineage to family status by employing a precedent family-group name, Epaphroditidae Brunner de Wattenwyl, 1893 sensu novo. We remove Brancsikia from our new concept of Epaphroditidae, rendering the genus incertae sedis.  相似文献   

18.
Three new genera of transversely articulated Metazoa are described from the Upper Vendian of the Arkhangelsk Region (Russia). Tamga gen. nov. and Lossinia gen. nov. are recognized to be closely related to the extinct Precambrian phylum Proarticulata; Ivovicia gen. nov. is considered as a true member of Proarticulata; all of the new genera are monotypic. Onega stepanovi Fedonkin is also reinterpreted as Proarticulata. The replacement generic name Archaeaspinus is introduced for the preoccupied Archaeaspis Ivantsov. Vendomia menneri Keller is assigned to Dickinsonia Sprigg.  相似文献   

19.
Surveys of forests and stockpiled timber of pine, spruce, larch, and silver fir in 14 administrative subjects of the Russian Federation revealed widespread occurrence of the coniferous wood parasitic nematode Bursaphelenchus mucronatus. Twenty species of bacteria belonging to 13 genera have been detected in 25 B. mucronatus isolates, and their identity has been determined by direct sequencing of the 16S RNA gene. The most frequently occurring were bacteria from the genera Pseudomonas, Stenotrophomonas, Pantoea, Bacillus, Burkholderia, and Serratia. Prevalence of Pseudomonas brenneri and P. fluorescence, which were also found in the nematode dauer larva (LIV) isolated from the fir sawyer beetle Monochamus urussovi, have also been assessed. Two nematode B. xylophilus isolates from Portugal and one isolate from the United States have been examined, and 10 symbiotic bacteria species have been isolated, including Agrobacterium tumefacience, P. fluorescens, P. brenneri, Rahnella aquatilis, Stenotrophomonas maltophilia, S. rhizophila, and Yersinia mollaretii.  相似文献   

20.
A review is given of the use of the generic namesBelemnites, Belemnitella, andBelemnella and the specific namesB. mucronata andB. lanceolata. The now generally accepted use of these names has been compared with their correct use according to the original figures. Concerning the consequences of the synonyms found is referred to the coming decision of the International Commission of Zoological Nomenclature.  相似文献   

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