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https://www.readbyqxmd.com/read/29163562/combined-field-inoculations-of-pseudomonas-bacteria-arbuscular-mycorrhizal-fungi-and-entomopathogenic-nematodes-and-their-effects-on-wheat-performance
#1
Nicola Imperiali, Xavier Chiriboga, Klaus Schlaeppi, Marie Fesselet, Daniela Villacrés, Geoffrey Jaffuel, S Franz Bender, Francesca Dennert, Ruben Blanco-Pérez, Marcel G A van der Heijden, Monika Maurhofer, Fabio Mascher, Ted C J Turlings, Christoph J Keel, Raquel Campos-Herrera
In agricultural ecosystems, pest insects, pathogens, and reduced soil fertility pose major challenges to crop productivity and are responsible for significant yield losses worldwide. Management of belowground pests and diseases remains particularly challenging due to the complex nature of the soil and the limited reach of conventional agrochemicals. Boosting the presence of beneficial rhizosphere organisms is a potentially sustainable alternative and may help to optimize crop health and productivity. Field application of single beneficial soil organisms has shown satisfactory results under optimal conditions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29160900/fusarium-graminearum-pathogen-or-endophyte-of-north-american-grasses
#2
Lotus A Lofgren, Nicholas R LeBlanc, Amanda K Certano, Jonny Nachtigall, Kathryn M LaBine, Jakob Riddle, Karen Broz, Yanhong Dong, Bianca Bethan, Christopher W Kafer, H Corby Kistler
Mycotoxin-producing Fusarium graminearum and related species cause Fusarium head blight on cultivated grasses, such as wheat and barley. However, these Fusarium species may have had a longer evolutionary history with North American grasses than with cultivated crops and may interact with the ancestral hosts in ways which are biochemically distinct. We assayed 25 species of asymptomatic native grasses for the presence of Fusarium species and confirmed infected grasses as hosts using re-inoculation tests. We examined seed from native grasses for the presence of mycotoxin-producing Fusarium species and evaluated the ability of these fungi to produce mycotoxins in both native grass and wheat hosts using biochemical analysis...
November 21, 2017: New Phytologist
https://www.readbyqxmd.com/read/29157827/supplementation-with-tocotrienols-from-bixa-orellana-improves-the-in-vivo-efficacy-of-daptomycin-against-methicillin-resistant-staphylococcus-aureus-in-a-mouse-model-of-infected-wound
#3
Elisa Pierpaoli, Fiorenza Orlando, Oscar Cirioni, Oriana Simonetti, Andrea Giacometti, Mauro Provinciali
BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) is a common cause of skin and soft-tissue infection worldwide. An adequate immune response acts as a first line of defence against infections and therefore plays an essential role in the maintenance of health. Tocotrienols (T3s), the lesser known isomers of vitamin E, possess many biological properties and have been recognized as immunomodulators. PURPOSE: The aim of this study was to investigate whether the in vivo supplementation with a mixture of 87...
December 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29146258/screening-of-tropically-derived-multi-trait-plant-growth-promoting-rhizobacteria-and-evaluation-of-corn-and-soybean-colonization-ability
#4
Bruna Durante Batista, Paulo Teixeira Lacava, Andrea Ferrari, Natalia Sousa Teixeira-Silva, Maria Letícia Bonatelli, Sarina Tsui, Mateus Mondin, Elliot Watanabe Kitajima, José Odair Pereira, João Lúcio Azevedo, Maria Carolina Quecine
The present study assessed the plant growth-promoting (PGP) traits and diversity of culturable rhizobacteria associated with guarana (Paullinia cupana), a typical tropical plant. Ninety-six bacteria were isolated, subjected to biochemical tests, and identified by partial or total 16S rDNA sequencing. Proteobacteria and Firmicutes were the dominant rhizospheric phyla found, and Burkholderia and Bacillus were the most abundant genera. Thirteen strains exhibited the four PGP traits evaluated, and most of them belonged to the genus Burkholderia...
January 2018: Microbiological Research
https://www.readbyqxmd.com/read/29129977/preinoculation-of-soybean-seeds-treated-with-agrichemicals-up-to-30-days-before-sowing-technological-innovation-for-large-scale-agriculture
#5
Ricardo Silva Araujo, Sonia Purin da Cruz, Edson Luiz Souchie, Thomas Newton Martin, André Shigueyoshi Nakatani, Marco Antonio Nogueira, Mariangela Hungria
The cultivation of soybean in Brazil experienced an expressive growth in the last decades. Soybean is highly demanding on nitrogen (N) that must come from fertilizers or from biological fixation. The N supply to the soybean crop in Brazil relies on the inoculation with elite strains of Bradyrhizobium japonicum, B. elkanii, and B. diazoefficiens, which are able to fulfill the crop's N requirements and enrich the soil for the following crop. The effectiveness of the association between N2-fixing bacteria and soybean plants depends on the efficacy of the inoculation process...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/29128540/electrospun-thermosensitive-hydrogel-scaffold-for-enhanced-chondrogenesis-of-human-mesenchymal-stem-cells
#6
Alexander R Brunelle, Christopher B Horner, Karen Low, Gerardo Ico, Jin Nam
Hydrogels have shown great potential for cartilage tissue engineering applications due to their capability to encapsulate cells within biomimetic, 3-dimensional (3D) microenvironments. However, the multi-step fabrication process that is necessary to produce cell/scaffold constructs with defined dimensions, limits their off-the-shelf translational usage. In this study, we have developed a hybrid scaffolding system which combines a thermosensitive hydrogel, poly(ethylene glycol)-poly(N-isopropylacrylamide) (PEG-PNIPAAm), with a biodegradable polymer, poly(ε-caprolactone) (PCL), into a composite, electrospun microfibrous structure...
November 8, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29117218/compatible-bacterial-mixture-tolerant-to-desiccation-improves-maize-plant-growth
#7
Dalia Molina-Romero, Antonino Baez, Verónica Quintero-Hernández, Miguel Castañeda-Lucio, Luis Ernesto Fuentes-Ramírez, María Del Rocío Bustillos-Cristales, Osvaldo Rodríguez-Andrade, Yolanda Elizabeth Morales-García, Antonio Munive, Jesús Muñoz-Rojas
Plant growth-promoting rhizobacteria (PGPR) increase plant growth and crop productivity. The inoculation of plants with a bacterial mixture (consortium) apparently provides greater benefits to plant growth than inoculation with a single bacterial strain. In the present work, a bacterial consortium was formulated containing four compatible and desiccation-tolerant strains with potential as PGPR. The formulation had one moderately (Pseudomonas putida KT2440) and three highly desiccation-tolerant (Sphingomonas sp...
2017: PloS One
https://www.readbyqxmd.com/read/29104370/is-there-sufficient-ensifer-and-rhizobium-species-diversity-in-uk-farmland-soils-to-support-red-clover-trifolium-pratense-white-clover-t-repens-lucerne-medicago-sativa-and-black-medic-m-lupulina
#8
Rachel Roberts, Robert W Jackson, Tim H Mauchline, Penny R Hirsch, Liz J Shaw, Thomas F Döring, Hannah E Jones
Rhizobia play important roles in agriculture owing to their ability to fix nitrogen through a symbiosis with legumes. The specificity of rhizobia-legume associations means that underused legume species may depend on seed inoculation with their rhizobial partners. For black medic (Medicago lupulina) and lucerne (Medicago sativa) little is known about the natural prevalence of their rhizobial partner Ensifer meliloti in UK soils, so that the need for inoculating them is unclear. We analysed the site-dependence of rhizobial seed inoculation effects on the subsequent ability of rhizobial communities to form symbioses with four legume species (Medicago lupulina, M...
November 2017: Applied Soil Ecology: a Section of Agriculture, Ecosystems & Environment
https://www.readbyqxmd.com/read/29079927/characterization-and-potential-of-plant-growth-promoting-rhizobacteria-isolated-from-native-andean-crops
#9
Katty Ogata-Gutiérrez, Carolina Chumpitaz-Segovia, Jesus Lirio-Paredes, Mariella M Finetti-Sialer, Doris Zúñiga-Dávila
Bacteria isolated from soil and rhizosphere samples collected in Peru from Andean crops were tested in vitro and in vivo to determine their potential as plant growth promoters and their ability to induce systemic resistance to Alternaria alternata in tomato plants. The isolates were identified by sequencing their 16S ribosomal RNA gene. Test for phosphate solubilization, and indolacetic acid were also carried out, together with in vitro antagonism assays in dual cultures towards the plant pathogens Fusarium solani, A...
October 27, 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29072116/attachment-of-anaerobic-ammonium-oxidizing-bacteria-to-augmented-carrier-material
#10
Maciej S Kowalski, Tanner R Devlin, Jan A Oleszkiewicz
The formation of stable and highly active anammox biofilm is a lengthy process leading to long start-up times of deammonifying reactors of several months or more. This study aims to provide a quick and simple solution to the problem of long start-up periods for biofilm reactors by pre-treating the surface of carrier material, thereby increasing attachment rates of anammox cells and creating a significant improvement in the adhesion of cells to the carrier material. Two different techniques were investigated...
October 26, 2017: Environmental Technology
https://www.readbyqxmd.com/read/29066541/pseudomonas-syringae-pv-syringae-b728a-regulates-multiple-stages-of-plant-colonization-via-the-bacteriophytochrome-bphp1
#11
Regina McGrane, Gwyn A Beattie
Light may be an important environmental signal for plant-associated bacteria, particularly those that live on leaves. An integrated network of red/far-red- and blue-light-responsive photosensory proteins is known to inhibit swarming motility in the foliar plant pathogen Pseudomonas syringae pv. syringae B728a. Here we elucidated factors in the red/far-red-light-sensing bacteriophytochrome BphP1 signal transduction pathway and report evidence for a role of BphP1 in multiple stages of the Psyringae B728a life cycle...
October 24, 2017: MBio
https://www.readbyqxmd.com/read/29064974/committee-opinion-no-725-vaginal-seeding
#12
(no author information available yet)
Vaginal seeding refers to the practice of inoculating a cotton gauze or a cotton swab with vaginal fluids to transfer the vaginal flora to the mouth, nose, or skin of a newborn infant. The intended purpose of vaginal seeding is to transfer maternal vaginal bacteria to the newborn. As the increase in the frequency of asthma, atopic disease, and immune disorders mirrors the increase in the rate of cesarean delivery, the theory of vaginal seeding is to allow for proper colonization of the fetal gut and, therefore, reduce the subsequent risk of asthma, atopic disease, and immune disorders...
November 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29064968/committee-opinion-no-725-summary-vaginal-seeding
#13
(no author information available yet)
Vaginal seeding refers to the practice of inoculating a cotton gauze or a cotton swab with vaginal fluids to transfer the vaginal flora to the mouth, nose, or skin of a newborn infant. The intended purpose of vaginal seeding is to transfer maternal vaginal bacteria to the newborn. As the increase in the frequency of asthma, atopic disease, and immune disorders mirrors the increase in the rate of cesarean delivery, the theory of vaginal seeding is to allow for proper colonization of the fetal gut and, therefore, reduce the subsequent risk of asthma, atopic disease, and immune disorders...
November 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29054549/-growth-and-photochemical-efficiency-of-photosystem-ii-in-seedlings-of-two-varieties-of-capsicum-annuum-l-inoculated-with-rhizobacteria-and-arbuscular-mycorrhizal-fungi
#14
Azareel Angulo-Castro, Ronald Ferrera-Cerrato, Alejandro Alarcón, Juan José Almaraz-Suárez, Julián Delgadillo-Martínez, Maribel Jiménez-Fernández, Oscar García-Barradas
Plant growth promoting rhizobacteria (PGPR) and arbuscular mycorrhizal fungi (AMF) are a biological alternative for the sustainable management of Capsicum annuum L. This research work evaluated the effects of both PGPR and AMF on bell pepper and jalapeno pepper plants. Five bacterial strains isolated from several locations in Estado de Mexico were used: [P61 (Pseudomonas tolaasii), A46 (P. tolaasii), R44 (Bacillus pumilus), BSP1.1 (Paenibacillus sp.), and OLs-Sf5 (Pseudomonas sp.)], and three treatments with AMF [H1 (consortium isolated from pepper crops in the State of Puebla), H2 (Rhizophagus intraradices), and H3 (consortium isolated from the rhizosphere of lemon trees, State of Tabasco)]...
October 17, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/29053348/use-of-bacterial-acc-deaminase-to-increase-oil-especially-poly-aromatic-hydrocarbons-phytoremediation-efficiency-for-maize-zea-mays-seedlings
#15
Rezvani Borujeni Samira, Khavazi Kazem, Asgharzadeh Ahmad, Rezvani Borujeni Iraj
Oil presence in soil, as a stressor, reduces phytoremediation efficiency through an increase in the plant stress ethylene. Bacterial 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase, as a plant stress ethylene reducer, was employed to increase oil phytoremediation efficiency. For this purpose, the ability of ACC deaminase-producing Pseudomonas strains to grow in oil-polluted culture media and withstand various concentrations of oil and also their ability to reduce plant stress ethylene and enhance some growth characteristics of maize and finally their effects on increasing phytoremediation efficiency of poly aromatic hydrocarbons (PAHs) in soil were investigated...
October 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29034180/significance-of-fermentation-process-on-biochemical-properties-of-phaseolus-vulgaris-red-beans
#16
Anteneh Worku, Omprakash Sahu
Phaseolus vulgaris L. beans have been characterized as a nearly perfect food in all around the world. It is consider functional in terms of providing nutrients and energy to sustain daily life. Red bean contain high protein, mineral, fibres and chemically diverse micronutrient composition, which can be affected by processing. The main aim of this work is to investigate the effect of open and controlled fermentation on the proximate composition, mineral elements, antinutritional factors and flatulence- causing oligosaccharides of a domesticated bean (Anger, conscope and Loko)...
December 2017: Biotechnology Reports
https://www.readbyqxmd.com/read/29032250/of-mice-and-women-a-laparoscopic-mouse-model-for-endometriosis
#17
Daniëlle Peterse, M Mercedes Binda, Dorien F O, Arne Vanhie, Amelie Fassbender, Joris Vriens, Thomas M D'Hooghe
OBJECTIVE: To demonstrate how a novel laparoscopic approach allows the development of a mouse model for endometriosis after seeding menstrual endometrium from donor mice into the abdominal cavity of syngeneic recipient mice. DESIGN: A step-by-step video description of the techniques used to adapt the estrous cycle of mice towards a menstrual cycle and to subsequently induce endometriosis via laparoscopic seeding of menstrual endometrium. SETTING: University research institute ETHICS: All experiments were ethically approved by KU Leuven, Belgium (ethical approval number: P031/2013)...
October 12, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/29031475/natural-infection-of-croton-yellow-vein-mosaic-virus-and-its-cognate-betasatellite-in-germplasm-of-different-crambe-spp-in-india
#18
Alok Kumar, Manas Kumar Bag, Ranbir Singh, A Abdul Kader Jailani, Bikash Mandal, Anirban Roy
Crambe is an important crop grown worldwide for industrial oil and seed meal. Besides the fungal and bacterial diseases, the crop is reported to be infected by tobacco mosaic virus, beet western yellows virus and turnip mosaic virus under experimental condition. Till now, there was no report of natural infection of any begomovirus in this crop. In the present study, a leaf curl disease was observed in germplasm accessions of three species of Crambe (C. abyssinica, C. glabrata and C. hispanica). Based on the symptoms and presence of whitefly population in the field, begomovirus infection was suspected...
October 12, 2017: Virus Research
https://www.readbyqxmd.com/read/29018432/maize-inoculation-with-azospirillum-brasilense-ab-v5-cells-enriched-with-exopolysaccharides-and-polyhydroxybutyrate-results-in-high-productivity-under-low-n-fertilizer-input
#19
André L M Oliveira, Odair J A P Santos, Paulo R F Marcelino, Karina M L Milani, Mónica Y A Zuluaga, Claudemir Zucareli, Leandro S A Gonçalves
Although Azospirillum strains used in commercial inoculant formulations presents diazotrophic activity, it has been reported that their ability to produce phytohormones plays a pivotal role in plant growth-promotion, leading to a general recommendation of its use in association with regular N-fertilizer doses. In addition, a high variability in the effectiveness of Azospirillum inoculants is still reported under field conditions, contributing to the adoption of the inoculation technology as an additional management practice rather than its use as an alternative practice to the use of chemical inputs in agriculture...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29017378/optimizing-human-induced-pluripotent-stem-cell-expansion-in-stirred-suspension-culture
#20
Guoliang Meng, Shiying Liu, Anna Poon, Derrick E Rancourt
Human induced pluripotent stem cells (hiPSCs) hold great hopes for application in regenerative medicine due to their inherent capacity to self-renew and differentiate into cells from the three embryonic germ layers. For clinical applications, a large quantity of hiPSCs produced in standardized and scalable culture processes is required. Several groups, including ours, have developed methodologies for scaled-up hiPSC production in stirred bioreactors in chemically defined medium. In this study, we optimized the critical steps and factors that affect hiPSC expansion and yield in stirred-suspension cultures, including inoculation conditions, seeding density, aggregate size, agitation rate, and cell passaging method...
November 21, 2017: Stem Cells and Development
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