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https://www.readbyqxmd.com/read/28545139/an-example-of-host-plant-expansion-of-host-specialized-aphis-gossypii-glover-in-the-field
#1
Dao-Wu Hu, Shuai Zhang, Jun-Yu Luo, Li-Min Lü, Jin-Jie Cui, Xiao Zhang
The host plant expansion of host-specialized Aphis gossypii (Glover) has been well studied in the laboratory; however, this phenomenon is poorly understood in the field. Here, we provide a series of laboratory and field experiments to assess the role of zucchini in the host plant expansion of cotton-specialized aphids. We observed that cotton-specialized aphids possessed the ability to expand on a new host plant (cucumber), with individuals first recorded on June 12 and consequently increasing exponentially in number in a field cage...
2017: PloS One
https://www.readbyqxmd.com/read/28540541/morphological-physiological-and-biochemical-responses-of-two-australian-biotypes-of-parthenium-hysterophorus-to-different-soil-moisture-regimes
#2
Ali Ahsan Bajwa, Bhagirath Singh Chauhan, Steve Adkins
Parthenium weed is a problematic invasive species in several countries around the world. Although it is considered to be a highly invasive species within Australia, not all biotypes of parthenium weed exhibit the same ability in regard to aggressive colonization and distribution. Differences among biotypes, particularly in regard to environmental ranges as a possible basis for this variation, have not always been elucidated. To determine whether drought tolerance could be a factor in biotype demographics, we quantified the biological responses of two Australian parthenium weed biotypes known to differ in invasive ability Clermont ("high") and Toogoolawah ("low") to 100, 75 and 50% of soil water holding capacity (WHC)...
May 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28535196/characterization-of-antixenosis-in-soybean-genotypes-to-bemisia-tabaci-hemiptera-aleyrodidae-biotype-b
#3
E L L Baldin, P L Cruz, R Morando, I F Silva, J P F Bentivenha, L R S Tozin, T M Rodrigues
Bemisia tabaci biotype B (Gennadius) is one of the most important soybean pest worldwide. Herein, 15 soybean genotypes were evaluated, to characterize the occurrence of antixenosis to B. tabaci biotype B. Initially, a multiple-choice test with all genotypes was carried out, evaluating the settling and oviposition preference at 3 d after infestation, and the colonization by nymphs after 48 d of infestation. Subsequently, a no-choice test, using 14 genotypes, was conducted with infested plants individually, and the number of eggs was counted after 72 h...
May 23, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28529709/last-rolls-of-the-yoyo-assessing-the-human-canonical-protein-count
#4
REVIEW
Christopher Southan
In 2004, when the protein estimate from the finished human genome was only 24,000, the surprise was compounded as reviewed estimates fell to 19,000 by 2014. However, variability in the total canonical protein counts (i.e. excluding alternative splice forms) of open reading frames (ORFs) in different annotation portals persists. This work assesses these differences and possible causes. A 16-year analysis of Ensembl and UniProtKB/Swiss-Prot shows convergence to a protein number of ~20,000. The former had shown some yo-yoing, but both have now plateaued...
2017: F1000Research
https://www.readbyqxmd.com/read/28527255/-oral-mucosa-analog-allografts-in-non-consanguineous-rats
#5
Luis González, Karla Padrón, Siham Salmen, Elsy Jerez, Lorena Dávila, Eduvigis Solórzano
INTRODUCTION: Although there are therapeutic options for the treatment of oral mucosa defects, the need for functional, anatomical and aesthetically similar substitutes persists, as well as for solutions to reduce autologous grafts morbidity. OBJECTIVE: To determine clinical and histological compatibility of equivalent oral mucosa allografts generated through tissue engineering in non-consanguineous rats. MATERIALS AND METHODS: We used a sample of oral mucosa from Sprague Dawley rats to obtain a fibroblast culture and a keratinocytes and fibroblasts co-culture...
January 24, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28523765/interference-of-allelopathic-rice-with-penoxsulam-resistant-barnyardgrass
#6
Xue-Fang Yang, Chui-Hua Kong, Xia Yang, Yong-Feng Li
BACKGROUND: Despite increasing knowledge of allelopathic rice interference with barnyardgrass, relatively little is known about its action on herbicide-resistant barnyardgrass. The incidence of herbicide-resistant barnyardgrass is escalating in paddy fields. It is warranted to understand interference of allelopathic rice with herbicide-resistant barnyardgrass and potential mechanisms. RESULTS: Penoxsulam-resistant and -susceptible barnyardgrass biotypes were identified and segregated from a putative penoxsulam-resistant population occurring in China paddy fields...
May 19, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28523244/an-evaluation-of-the-gingival-biotype-and-the-width-of-keratinized-gingiva-in-the-mandibular-anterior-region-of-individuals-with-different-dental-malocclusion-groups-and-levels-of-crowding
#7
Yeşim Kaya, Özer Alkan, Sıddık Keskin
OBJECTIVE: To evaluate the relationship of gingival thickness (GT) and the width of keratinized gingiva (WKG) with different malocclusion groups and the level of crowding. METHODS: A total of 187 periodontally healthy subjects (121 females and 66 males) who presented at the Faculty of Dentistry in Yüzüncü Yıl University for orthodontic treatment were enrolled in the study. The individuals involved in the study were divided into three groups; Angle Class I malocclusion, Angle Class II malocclusion, and Angle Class III malocclusion...
May 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28518181/a-semi-automatic-algorithm-for-preliminary-assessment-of-labial-gingiva-and-alveolar-bone-thickness-of-maxillary-anterior-teeth
#8
Sheng-Hung Chen, Hsun-Liang Chan, Yongning Lu, Sim-Heng Ong, Hom-Lay Wang, Eng Hong Ko, Po-Chun Chang
PURPOSE: Soft and hard tissue volumes are critical for implant placement and long-term stability. Although the literature has adequately addressed tissue biotypes of Western populations, pertinent information about Asian populations is limited. This study aimed to evaluate the soft and hard tissue profiles of the maxillary anterior teeth of the Taiwanese population using a semi-automatic algorithm. MATERIALS AND METHODS: Cone beam computed tomography images of 11 adults with well-aligned maxillary anterior teeth were overlaid with those of cast models, based on the tooth crowns manually outlined by two independent observers...
May 18, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28517971/soft-tissue-changes-around-immediately-placed-implants-a-systematic-review-and-meta-analyses-with-at-least-12-months-follow-up-after-functional-loading
#9
Bassam M Kinaia, Filip Ambrosio, Periodontal Resident, Monica Lamble, Periodontal Resident, Kristyn Hope, Periodontal Resident, Maanas Shah, Anthony L Neely
BACKGROUND: Immediate implant placement (IIP) is predictable but can lead to esthetic challenges including mid-facial recession (MFR) and papillary height (PH) loss. The focused question of this systematic review was: What is the effect of IIP on MFR and PH after at least 12-months of functional loading? METHODS: Literature review of the COCHRANE and MEDLINE electronic databases and hand search up to January 2016 identified eligible studies. Four reviewers independently assessed data quality and methodology...
May 18, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28515483/refuges-and-host-shift-pathways-of-host-specialized-aphids-aphis-gossypii
#10
Xiang-Dong Liu, Ting-Ting Xu, Hai-Xia Lei
Polyphagous cotton-melon aphid populations usually comprise cotton- and cucurbit-specialized biotypes. Host-specialized aphids are prone to food shortages. Cucumber, the favourite food of cucurbit-specialized aphids, is usually absent during autumn and winter in Nanjing, China. Therefore, suboptimal host plants act as refuges and govern the population dynamics of this aphid. The species, growth stages and leaf ages of host plants that cotton- and cucurbit-specialized aphids potentially could use were explored in this study...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28511108/wine-yeasts-identification-by-maldi-tof-ms-optimization-of-the-preanalytical-steps-and-development-of-an-extensible-open-source-platform-for-processing-and-analysis-of-an-in-house-ms-database
#11
Cristina Gutiérrez, M Ángeles Gómez-Flechoso, Ignacio Belda, Javier Ruiz, Nour Kayali, Luis Polo, Antonio Santos
Saccharomyces cerevisiae is the most important yeast species for the production of wine and other beverages. In addition, nowadays, researchers and winemakers are aware of the influence of non-Saccharomyces in wine aroma complexity. Due to the high microbial diversity associated to several agro-food processes, such as winemaking, developing fast and accurate methods for microbial identification is demanded. In this context, MALDI-TOF MS mass fingerprint provides reliable tool for fast biotyping and classification of microorganisms...
May 8, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28509842/molecular-epidemiology-of-methicillin-resistant-and-methicillin-susceptible-staphylococcus-aureus-in-the-ovine-dairy-chain-and-in-farm-related-humans
#12
Guerrino Macori, Giuseppina Giacinti, Alberto Bellio, Silvia Gallina, Daniela Manila Bianchi, Daniele Sagrafoli, Nicla Marri, Gilberto Giangolini, Simonetta Amatiste, Lucia Decastelli
Staphylococcus aureus is a major cause of clinical infections in humans and its enterotoxins cause foodborne disease. In the present study, we tested a total of 51 isolates of S. aureus from small-ruminant dairy farms with artisan dairy facilities, all located in Latium, Italy. The farms have a known history of a high prevalence of methicillin-resistant S. aureus (MRSA). Most of the MRSA isolates (27 of 51) belonged to spa-type t127 (43.1%), followed by t2678 (3.9%), t044 (2%), t1166 (2%), and t1773 (2%). PFGE performed on mecA positive strains identified one cluster (≥ 80% of similarity), comprising 22 MRSA...
May 16, 2017: Toxins
https://www.readbyqxmd.com/read/28505220/multicenter-evaluation-of-the-bruker-maldi-biotyper-ca-system-for-the-identification-of-clinically-important-bacteria-and-yeasts
#13
Deborah A Wilson, Stephen Young, Karen Timm, Susan Novak-Weekley, Elizabeth M Marlowe, Neil Madisen, Jennifer L Lillie, Nathan A Ledeboer, Rebecca Smith, Josh Hyke, Christen Griego-Fullbright, Patricia Jim, Paul A Granato, Matthew L Faron, Joven Cumpio, Blake W Buchan, Gary W Procop
Objectives: A report on the multicenter evaluation of the Bruker MALDI Biotyper CA System (MBT-CA; Bruker Daltonics, Billerica, MA) for the identification of clinically important bacteria and yeasts. Methods: In total, 4,399 isolates of medically important bacteria and yeasts were assessed in the MBT-CA. These included 2,262 aerobic gram-positive (AGP) bacteria, 792 aerobic gram-negative (AGN) bacteria 530 anaerobic (AnA) bacteria, and 815 yeasts (YSTs). Three processing methods were assesed...
May 13, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28504096/multiple-clones-and-low-antimicrobial-resistance-rates-for-salmonella-enterica-serovar-infantis-populations-in-greece
#14
Theofilos Papadopoulos, Evanthia Petridou, Antonios Zdragas, Georgia Mandilara, Georgios Vafeas, Maria Passiotou, Alkiviadis Vatopoulos
All the Salmonella enterica ser. Infantis strains isolated under official control programs in Greece during a four year period were studied, 23 of human origin, 16 from food animals and one from food. Molecular analyses (PFGE) in combination with antimicrobial susceptibility testing were used to study whether the occurrence S. Infantis in Greece resulted from different biotypes or a successful spread of one clone. Low rates of antimicrobial resistance were observed, except for streptomycin among human isolates (48%), indicating that selective pressure due to consumption of antimicrobials has not resulted the spread of dominant clones...
April 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28490491/comparison-of-the-vitek-ms-and-bruker-maldi-tof-ms-mass-spectrometry-systems-for-the-identification-of-rhodococcus-equi-and-dietzia-spp
#15
Carlos Ruiz de Alegría Puig, Lilian Pilares, Francesc Marco, Jordi Vila, Luis Martínez-Martínez, Jesús Navas
Rhodococcus equi causes pyogranulomatous pneumonia in domesticated animals and immunocompromised humans. Dietzia spp. are environmental bacteria that have been rarely associated with human infections. R. equi and Dietzia spp. are closely related actinomycetes. Phenotypic discrimination between R. equi and Dietzia on the basis of their Gram stain morphology and colony appearance is problematic. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) is a fast, reliable and cost-effective method for identification of a wide variety of microorganisms...
May 10, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28487677/accurate-differentiation-of-streptococcus-pneumoniae-from-other-species-within-the-streptococcus-mitis-group-by-peak-analysis-using-maldi-tof-ms
#16
Mercedes Marín, Emilia Cercenado, Carlos Sánchez-Carrillo, Adrián Ruiz, Álvaro Gómez González, Belén Rodríguez-Sánchez, Emilio Bouza
Despite the benefits of MALDI-TOF MS technology (Matrix-Assisted Laser Desorption-Ionization Time-Of-Flight Mass Spectrometry) reported worldwide and the continuous improving of the available databases, discrimination between Streptococcus pneumoniae and closely related species within the Streptococcus mitis group (SMG) using this methodology has been suboptimal. However, the accurate identification at the species level of this group of microorganisms is important for the appropriate management of infected patients...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28485710/epidemiological-typing-of-multidrug-resistant-klebsiella-pneumoniae-which-causes-paediatric-ventilator-associated-pneumonia-in-egypt
#17
Eman R Mohamed, Sherine A Aly, Hamada M Halby, Shabaan H Ahmed, Amira M Zakaria, Osama M El-Asheer
PURPOSE: Multidrug-resistant Klebsiella pneumoniae is a common nosocomial pathogen that plays an important role in ventilator-associated pneumonia (VAP). This study aimed to define the clonal relatedness of K. pneumoniae strains isolated from paediatric VAP in addition to those isolated from environmental samples. METHODOLOGY: This study included 19 clinical and 4 environmental K. pneumoniae isolates recovered from the paediatric intensive care unit (PICU) in Assiut University Children's Hospital...
May 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28475086/timing-of-soft-tissue-management-around-dental-implants-a-suggested-protocol
#18
Mahdi Kadkhodazadeh, Reza Amid, Mehdi Ekhlasmand Kermani, Mahdieh Mirakhori, Sepanta Hosseinpour
Survival of dental implants depends on several factors; soft tissue (ST) management around dental implants is one of the foremost. Several studies have suggested techniques for ST management around dental implants, but none of them has discussed a suitable timetable for this process. This study aimed to review published articles related to the timing of ST management around dental implants and suggest a customized treatment protocol. A search of the PubMed database was conducted; the search was limited to English-language articles published from January 1995 to July 2015 with available full texts...
May 2017: General Dentistry
https://www.readbyqxmd.com/read/28459805/species-delimitation-in-asexual-insects-of-economic-importance-the-case-of-black-scale-parasaissetia-nigra-a-cosmopolitan-parthenogenetic-pest-scale-insect
#19
Yen-Po Lin, Robert D Edwards, Takumasa Kondo, Thomas L Semple, Lyn G Cook
Asexual lineages provide a challenge to species delimitation because species concepts either have little biological meaning for them or are arbitrary, since every individual is monophyletic and reproductively isolated from all other individuals. However, recognition and naming of asexual species is important to conservation and economic applications. Some scale insects are widespread and polyphagous pests of plants, and several species have been found to comprise cryptic species complexes. Parasaissetia nigra (Nietner, 1861) (Hemiptera: Coccidae) is a parthenogenetic, cosmopolitan and polyphagous pest that feeds on plant species from more than 80 families...
2017: PloS One
https://www.readbyqxmd.com/read/28455327/novel-method-for-the-reliable-identification-of-siccibacter-and-franconibacter-strains-from-pseudo-cronobacter-to-new-enterobacteriaceae-genera
#20
Barbora Svobodová, Jiří Vlach, Petra Junková, Ludmila Karamonová, Martina Blažková, Ladislav Fukal
In the last decade, strains of the genera Franconibacter and Siccibacter have been misclassified as first Enterobacter and later Cronobacter Because Cronobacter is a serious food-borne pathogen that affects premature neonates and elderly individuals, such misidentification may not only falsify epidemiological statistics, but also lead to tests of powdered infant formula or other foods giving false results. Currently, the main ways of identifying Franconibacter and Siccibacter strains are by biochemical testing or by sequencing of the fusA gene as part of Cronobacter MLST, but in relation to these strains the former is generally highly difficult and unreliable while the latter remains expensive...
April 28, 2017: Applied and Environmental Microbiology
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