scholarly journals Environmental, Biogeographic, and Biochemical Patterns of Archaea of the Family Ferroplasmaceae

2011 ◽  
Vol 77 (15) ◽  
pp. 5071-5078 ◽  
Author(s):  
Olga V. Golyshina
Keyword(s):  
Cell Wall ◽  
Research Progress ◽  
Current Status ◽  
Content Type ◽  
Research Areas ◽  
Physiological Diversity ◽  
New Family ◽  
The Family ◽  
Acidophilic Archaea

ABSTRACTAbout 10 years ago, a new family of cell wall-deficient, iron-oxidizing archaea,Ferroplasmaceae, within the large archaeal phylumEuryarchaeota, was described. In this minireview, I summarize the research progress achieved since then and report on the current status of taxonomy, biogeography, physiological diversity, biochemistry, and other research areas involving this exciting group of acidophilic archaea.

Barrientosiimonas humi gen. nov., sp. nov., an actinobacterium of the family Dermacoccaceae

2013 ◽  
Vol 63 (Pt_1) ◽  
pp. 241-248 ◽  
Author(s):  
Learn-Han Lee ◽  
Yoke-Kqueen Cheah ◽  
Shiran Mohd Sidik ◽  
Qing-Yi Xie ◽  
Yi-Li Tang ◽  
...  
Keyword(s):  
Cell Wall ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Sequence Similarity ◽  
Taxonomic Status ◽  
Rrna Gene ◽  
Cell Wall Polysaccharide ◽  
Content Type ◽  
Link Type ◽  
The Family

Three novel actinobacteria, strains 39T, 40 and 41, were isolated from soil collected from Barrientos Island in the Antarctic. The taxonomic status of these strains was determined using a polyphasic approach. Comparison of 16S rRNA gene sequences revealed that strain 39T represented a novel lineage within the family Dermacoccaceae and was most closely related to members of the genera Demetria (96.9 % 16S rRNA gene sequence similarity), Branchiibius (95.7 %), Dermacoccus (94.4–95.3 %), Calidifontibacter (94.6 %), Luteipulveratus (94.3 %), Yimella (94.2 %) and Kytococcus (93.1 %). Cells were irregular cocci and short rods. The peptidoglycan type was A4α with an l-Lys–l-Ser–d-Asp interpeptide bridge. The cell-wall sugars were galactose and glucose. The major menaquinone was MK-8(H4). The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, phosphoglycolipid, two glycolipids and one unknown phospholipid. The acyl type of the cell-wall polysaccharide was N-acetyl. The major cellular fatty acids were anteiso-C17 : 0 (41.97 %), anteiso-C17 : 1ω9c (32.16 %) and iso-C16 : 0 (7.68 %). The DNA G+C content of strain 39T was 68.4 mol%. On the basis of phylogenetic and phenotypic differences from other genera of the family Dermacoccaceae , a novel genus and species, Barrientosiimonas humi gen. nov., sp. nov., is proposed; the type strain of the type species is 39T ( = CGMCC 4.6864T  = DSM 24617T).

scholarly journals Trends in family tourism

2015 ◽  
Vol 1 (2) ◽  
pp. 141-147 ◽  
Author(s):  
Heike A. Schänzel ◽  
Ian Yeoman
Keyword(s):  
Design Methodology ◽  
Tourism Industry ◽  
Social Structures ◽  
Content Type ◽  
Geographically Dispersed ◽  
New Family ◽  
Global Mobility ◽  
The Family ◽  
The Future ◽  
Family Memories

Purpose Families represent a large and growing market for the tourism industry. Family tourism is driven by the increasing importance placed on promoting family togetherness, keeping family bonds alive and creating family memories. Predictions for the future of family travel are shaped by changes in demography and social structures. With global mobility families are increasingly geographically dispersed and new family markets are emerging. The purpose of this paper is to discuss the trends that shape the understanding of families and family tourism. Design/methodology/approach This paper examines ten trends that the authors as experts in the field identify of importance and significance for the future of family tourism. Findings What emerges is that the future of family tourism lies in capturing the increasing heterogeneity, fluidity and mobility of the family market. Originality/value The paper contributes to the understanding about the changes taking place in family tourism and what it means to the tourism industry in the future.

Alpinimonas psychrophila gen. nov., sp. nov., an actinobacterium of the family Microbacteriaceae isolated from alpine glacier cryoconite

2012 ◽  
Vol 62 (Pt_11) ◽  
pp. 2724-2730 ◽  
Author(s):  
Peter Schumann ◽  
De-Chao Zhang ◽  
Mersiha Redzic ◽  
Rosa Margesin
Keyword(s):  
Cell Wall ◽  
16S Rrna ◽  
Type Strain ◽  
Type Species ◽  
Rrna Gene ◽  
Content Type ◽  
Alpine Glacier ◽  
Dna Relatedness ◽  
Link Type ◽  
The Family

A Gram-type positive, Gram-reaction variable, non-motile, psychrophilic actinobacterium, designated Cr8-25T, was isolated from alpine glacier cryoconite and was able to grow well over a temperature range of 1–15 °C. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain Cr8-25T belonged to the family Microbacteriaceae and showed highest 16S rRNA gene sequence similarity with Klugiella xanthotipulae 44C3T (97.0 %). However, strain Cr8-25T could be differentiated from the type strain of K. xanthotipulae on the level of genomospecies by a DNA–DNA relatedness value of only 37.2 %. Strain Cr8-25T contained a cell-wall peptidoglycan that was cross-linked according to the B-type, which is based on 2,4-diaminobutyric acid. The cell wall contained the sugars galactose, fucose and rhamnose. The predominant cellular fatty acids of strain Cr8-25T were C15 : 0 anteiso (64.6 %) and iso-C16 : 0 (22.5 %) and the major menaquinones were MK-11 and MK-10. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and unknown glycolipids. The G+C content of the genomic DNA was 58.8 mol%. On the basis of the phenotypic characteristics, phylogenetic and chemotaxonomic analyses and DNA–DNA relatedness data, strain Cr8-25T represents a novel species of a new genus in the family Microbacteriaceae , for which the name Alpinimonas psychrophila gen. nov., sp. nov. is proposed. The type strain is Cr8-25T ( = DSM 23737T = LMG 26215T).

scholarly journals Resurgence of Pseudoperonospora cubensis: The Causal Agent of Cucurbit Downy Mildew

2015 ◽  
Vol 105 (7) ◽  
pp. 998-1012 ◽  
Author(s):  
Yigal Cohen ◽  
Kyle M. Van den Langenberg ◽  
Todd C. Wehner ◽  
Peter S. Ojiambo ◽  
Mary Hausbeck ◽  
...  
Keyword(s):  
Disease Control ◽  
Host Plant ◽  
Downy Mildew ◽  
Plant Resistance ◽  
Host Plant Resistance ◽  
Current Status ◽  
Pseudoperonospora Cubensis ◽  
Research Areas ◽  
The Family ◽  
Future Management

The downy mildew pathogen, Pseudoperonospora cubensis, which infects plant species in the family Cucurbitaceae, has undergone major changes during the last decade. Disease severity and epidemics are far more destructive than previously reported, and new genotypes, races, pathotypes, and mating types of the pathogen have been discovered in populations from around the globe as a result of the resurgence of the disease. Consequently, disease control through host plant resistance and fungicide applications has become more complex. This resurgence of P. cubensis offers challenges to scientists in many research areas including pathogen biology, epidemiology and dispersal, population structure and population genetics, host preference, host−pathogen interactions and gene expression, genetic host plant resistance, inheritance of host and fungicide resistance, and chemical disease control. This review serves to summarize the current status of this major pathogen and to guide future management and research efforts within this pathosystem.

scholarly journals Rhizocola hellebori gen. nov., sp. nov., an actinomycete of the family Micromonosporaceae containing 3,4-dihydroxydiaminopimelic acid in the cell-wall peptidoglycan

2014 ◽  
Vol 64 (Pt_8) ◽  
pp. 2706-2711 ◽  
Author(s):  
Atsuko Matsumoto ◽  
Yoko Kawaguchi ◽  
Takuji Nakashima ◽  
Masato Iwatsuki ◽  
Satoshi Ōmura ◽  
...  
Keyword(s):  
Cell Wall ◽  
Type Species ◽  
Gene Sequence ◽  
Rrna Gene ◽  
Rrna Gene Sequence ◽  
Content Type ◽  
Link Type ◽  
Cell Wall Peptidoglycan ◽  
The Family ◽  
The 16S Rrna Gene

An actinomycete strain, K12-0602T, was isolated from the root of a Helleborus orientalis plant in Japan. The 16S rRNA gene sequence of strain K12-0602T showed that it had a close relationship with members of the family Micromonosporaceae and the 16S rRNA gene sequence similarity values between strain K12-0602T and type strains of type species of 27 genera belonging to the family Micromonosporaceae were below 96.2 %. MK-9 (H4) and MK-9 (H6) were detected as major menaquinones, and galactose, xylose, mannose and ribose were present in the whole-cell hydrolysate. The acyl type of the peptidoglycan was glycolyl. Major fatty acids were iso-C15 : 0, iso-C16 : 0, C17 : 1ω9c and anteiso-C17 : 0. Phosphatidylethanolamine was detected as the phospholipid corresponding to phospholipid type II. The G+C content of the genomic DNA was 67 mol%. Analyses of the cell-wall peptidoglycan by TLC and LC/MS showed that it was composed of alanine, glycine, hydroxylglutamic acid and an unknown amino acid, which was subsequently determined to be 3,4-dihydroxydiaminopimelic acid using instrumental analyses, including NMR and mass spectrometry. On the basis of the phylogenetic analysis and chemotaxonomic characteristics, strain K12-0602T represents a novel species of a new genus in the family Micromonosporaceae , for which the name Rhizocola hellebori gen. nov., sp. nov. is proposed. The type strain of the type species is K12-0602T ( = NBRC 109834T = DSM 45988T). This is the first report, to our knowledge, of 3,4-dihydroxydiaminopimelic acid being found as a diamino acid in bacterial cell-wall peptidoglycan.

The evolution of wine research

2018 ◽  
Vol 30 (1) ◽  
pp. 286-312 ◽  
Author(s):  
Mark A. Bonn ◽  
Meehee Cho ◽  
Hyemi Um
Keyword(s):  
Network Analysis ◽  
Current Status ◽  
Future Research ◽  
Content Type ◽  
Research Areas ◽  
Network Analytics ◽  
Time Periods ◽  
Keyword Network ◽  
New Research ◽  
Time Frames

Purpose Wine as a research topic continues to address a plethora of diverse contexts. In consideration of this scope and abundance of wine literature, this study aims to provide guidance for future meaningful contributions to this existing body of wine knowledge through a comprehensive scholarly review. Design/methodology/approach A total of 22 wine business, hospitality and tourism journals were selected and used to identify 739 refereed articles addressing wine-related topics over a 26-year period from 1990 to 2015. This was segmented using five wine research time frames, which were then separately investigated using content analysis and keyword network analysis. Findings Results support the importance for continued refinement of certain research areas to add understanding to wine research. In particular, the topics of marketing and tourism pertaining to wine research have fragmented into much more specialized sub-segments over this 26-year period. Research limitations/implications Limitations include generalizability of findings because of the study’s use of 22 journals, along with the selected 26-year period. Future research should examine other time periods using other publications in peripheral and in non-related areas to seek topics potentially and inadvertently overlooked by this process. Significant topics and trends regarding wine research were identified and classified according to time periods. Information has been provided for future directions and new research agendas. Originality/value Based upon an examination of time periods segmented by half-decades, keyword network analysis was used to explore wine research trends. Using keyword network analytics, this method for identifying networks between key words produced findings that have brought the literature regarding wine research to a current status allowing academics to gain insights into potential direction for future research needs.

Comprehensive analysis of potential prognostic biomarker in gliomas

2020 ◽  
Vol 38 (4) ◽  
pp. 783-797 ◽  
Author(s):  
Zunpeng Yu ◽  
Long Lu
Keyword(s):  
Prognostic Factors ◽  
Language Processing ◽  
Secondary Analysis ◽  
Clinical Information ◽  
Comprehensive Analysis ◽  
Research Progress ◽  
Current Status ◽  
Multidimensional Data ◽  
China National Knowledge Infrastructure ◽  
Content Type

PurposeGliomas are common intracranial tumors with the characteristic of diffuse and invasive growth. The prognosis is poor, and the recurrence rate and mortality are higher. With the development of big data technology, many methods such as natural language processing, computer vision and image processing have been deeply applied in the medical field. This can help clinicians to provide personalized and precise diagnosis and therapeutic schedule for patients with different type of gliomas to achieve the best therapeutic effect. The purpose of this paper is to summarize and extract useful information from published research results by conducting a secondary analysis of the literature.Design/methodology/approachThe PubMed and China National Knowledge Infrastructure (CNKI) literature database were used to retrieve published Chinese and English research papers about human gliomas. Comprehensive analysis was applied to conduct this research. The factors affecting survival and prognosis were screened and analyzed respectively in this paper, and different methods for multidimensional data of patients were discussed.FindingsThis paper identified biomarkers and therapeutic modalities associated with prognosis for different grade of gliomas. This paper investigated the relationship among these clinical prognostic factors and different histopathologic tying and grade of gliomas by comprehensive analysis. This paper summarizes the research progress of biomarker in medical imaging and genomics of gliomas to improve prognosis and the current status of treatment in China.Originality/valueCombined with multimodal data such as genomics data, medical image data and clinical information data, this paper comprehensively analyzed the prognostic factors of glioma and provided guidance and evidence for rational treatment planning and improvement of clinical treatment prognosis.

scholarly journals A New Family of Capsule Polymerases Generates Teichoic Acid-Like Capsule Polymers in Gram-Negative Pathogens

mBio ◽  
2018 ◽  
Vol 9 (3) ◽  
Author(s):  
Christa Litschko ◽  
Davide Oldrini ◽  
Insa Budde ◽  
Monika Berger ◽  
Jochen Meens ◽  
...  
Keyword(s):  
Cell Wall ◽  
Teichoic Acid ◽  
Animal Husbandry ◽  
Type I ◽  
Gram Positive ◽  
Gram Negative ◽  
Content Type ◽  
New Family ◽  
Animal Pathogens ◽  
Conventional Production

ABSTRACTGroup 2 capsule polymers represent crucial virulence factors of Gram-negative pathogenic bacteria. They are synthesized by enzymes called capsule polymerases. In this report, we describe a new family of polymerases that combine glycosyltransferase and hexose- and polyol-phosphate transferase activity to generate complex poly(oligosaccharide phosphate) and poly(glycosylpolyol phosphate) polymers, the latter of which display similarity to wall teichoic acid (WTA), a cell wall component of Gram-positive bacteria. Using modeling and multiple-sequence alignment, we showed homology between the predicted polymerase domains and WTA type I biosynthesis enzymes, creating a link between Gram-negative and Gram-positive cell wall biosynthesis processes. The polymerases of the new family are highly abundant and found in a variety of capsule-expressing pathogens such asNeisseria meningitidis,Actinobacillus pleuropneumoniae,Haemophilus influenzae,Bibersteinia trehalosi, andEscherichia coliwith both human and animal hosts. Five representative candidates were purified, their activities were confirmed using nuclear magnetic resonance (NMR) spectroscopy, and their predicted folds were validated by site-directed mutagenesis.IMPORTANCEBacterial capsules play an important role in the interaction between a pathogen and the immune system of its host. During the last decade, capsule polymerases have become attractive tools for the production of capsule polymers applied as antigens in glycoconjugate vaccine formulations. Conventional production of glycoconjugate vaccines requires the cultivation of the pathogen and thus the highest biosafety standards, leading to tremendous costs. With regard to animal husbandry, where vaccines could avoid the extensive use of antibiotics, conventional production is not sufficiently cost-effective. In contrast, enzymatic synthesis of capsule polymers is pathogen-free and fast, offers high stereo- and regioselectivity, and works with high efficacy. The new capsule polymerase family described here vastly increases the toolbox of enzymes available for biotechnology purposes. Representatives are abundantly found in human pathogens but also in animal pathogens, paving the way for the exploitation of polymerases for the development of a new generation of vaccines for animal husbandry.

Service research: progress toward interdisciplinary collaboration

2020 ◽  
Vol 34 (3) ◽  
pp. 363-371
Author(s):  
G. Tomas M. Hult ◽  
Travis A. Walkowiak ◽  
Jonathan M. Beck
Keyword(s):  
Design Methodology ◽  
Interdisciplinary Collaboration ◽  
Services Marketing ◽  
Research Progress ◽  
Service Research ◽  
Content Type ◽  
Research Areas ◽  
Key Concepts ◽  
Prior Literature ◽  
Unique Framework

Purpose The purpose of this paper is to promote a broadened view of service research and to demonstrate a path for integrating interdisciplinary perspectives with services marketing. Design/methodology/approach Two major streams of service literature are reviewed, highlighting key conceptual developments in each. Through synthesis of prior literature, a research framework and agenda are developed. Findings The findings indicate that major service research areas have been extensively explored, yet service literature is fragmented on key concepts. This can make it challenging to collaborate across disciplines. This work develops a framework for integrating concepts across disciplines to foster more impactful work. Originality/value This work presents a unique framework for integrating interdisciplinary perspectives with services marketing. Moreover, a research agenda for the specific purpose of promoting collaboration across disciplines is presented.

scholarly journals Charting research on international luxury marketing: where are we now and where should we go next?

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Cleopatra Veloutsou ◽  
George Christodoulides ◽  
Francisco Guzmán
Keyword(s):  
Research Area ◽  
Intellectual Structure ◽  
Current Status ◽  
Future Research ◽  
Research Directions ◽  
Content Type ◽  
Research Areas ◽  
Mapping Analysis ◽  
Future Research Directions ◽  
Luxury Marketing

PurposeDespite luxury's increasing globalization and broadening scope via digitalization and new markets, the intellectual structure of the overall research corpus remains tenuous. This work therefore aims to provide an overview of published work on international luxury marketing and to contribute to a better understanding of the research area.Design/methodology/approachUsing a systematic approach, 1151 items (papers) were retrieved and 181 selected from the international luxury marketing field published before 2019. These items were analyzed by using various bibliometric techniques to identify the most productive countries, journals, influential authors, papers and research clusters.FindingsAlthough most of the outputs originate from business, management and marketing journals, other disciplines also research this topic. The analysis reveals an emerging field, with 85% of the published papers appearing between 2010 and 2018, which are primarily the output of US- and UK-based authors and none of whom dominates the field. The three identified keyword clusters are (1) consumers and consumption (2) tools and (3) core themes.Practical implicationsThis article contributes to our understanding of the evolution, current status and research trends of published research on international luxury marketing by presenting a mapping analysis and proposing future research directions.Originality/valueThis is the first bibliometric mapping analysis of research on the topic from its conception to 2019. It contributes insights from different research disciplines, adds to the categorization of the international luxury marketing literature and provides promising future research directions in terms of research areas and strategies.

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