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https://www.readbyqxmd.com/read/29145496/insights-into-soybean-transcriptome-reconfiguration-under-hypoxic-stress-functional-regulatory-structural-and-compositional-characterization
#1
Thiago J Nakayama, Fabiana A Rodrigues, Norman Neumaier, Juliana Marcolino-Gomes, Hugo B C Molinari, Thaís R Santiago, Eduardo F Formighieri, Marcos F Basso, José R B Farias, Beatriz M Emygdio, Ana C B de Oliveira, Ângela D Campos, Aluízio Borém, Frank G Harmon, Liliane M Mertz-Henning, Alexandre L Nepomuceno
Soybean (Glycine max) is one of the major crops worldwide and flooding stress affects the production and expansion of cultivated areas. Oxygen is essential for mitochondrial aerobic respiration to supply the energy demand of plant cells. Because oxygen diffusion in water is 10,000 times lower than in air, partial (hypoxic) or total (anoxic) oxygen deficiency is important component of flooding. Even when oxygen is externally available, oxygen deficiency frequently occurs in bulky, dense or metabolically active tissues such as phloem, meristems, seeds, and fruits...
2017: PloS One
https://www.readbyqxmd.com/read/29143730/genetic-diversity-and-symbiotic-effectiveness-of-bradyrhizobium-strains-nodulating-selected-annual-grain-legumes-growing-in-ethiopia
#2
Tulu Degefu, Endalkachew Wolde-Meskel, Frank Rasche
Vigna unguiculata, Vigna radiata and Arachis hypogaea growing in Ethiopia are nodulated by a genetically diverse group of Bradyrhizobium strains. To determine the genetic identity and symbiotic effectiveness of these bacteria, a collection of 36 test strains originating from the root nodules of the three hosts was investigated using multilocus sequence analyses (MLSA) of core genes including 16S rRNA, recA, glnII, gyrB, atpD and dnaK. Sequence analysis of nodA and nifH genes along with tests for symbiotic effectiveness using δ(15)N analysis were also carried out...
November 16, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29143669/considerations-for-using-minocycline-vs-doxycycline-for-treatment-of-canine-heartworm-disease
#3
Mark G Papich
BACKGROUND: Doxycycline has been considered the first drug of choice for treating Wolbachia, a member of the Rickettsiaceae, which has a symbiotic relationship with filarial worms, including heartworms. Wolbachia, is susceptible to tetracyclines, which have been used as adjunctive treatments for heartworm disease. Treatment with doxycycline reduces Wolbachia numbers in all stages of heartworms and improves outcomes and decreased microfilaremia in dogs treated for heartworm disease. The American Heartworm Society recommends treatment with doxycycline in dogs diagnosed with heartworm disease at a dose of 10 mg/kg twice daily for 28 days...
November 9, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29139256/-correlative-analysis-advance-of-chemical-constituents-of-polyporus-umbellatus-and-armillaria-mellea
#4
REVIEW
Jing-Wen Huang, Chang-Jiang-Sheng Lai, Yuan Yuan, Min Zhang, Jun-Hui Zhou, Lu-Qi Huang
Medicinal Polyporus umbellatus is the dry sclerotia of P. umbellatus, with the effect of diuresis; Armillaria mellea is a parasitic fungus which can infect plants up to 300 genera, with sedative, anticonvulsant and some other biological activities. As the medicinal value of P. umbellatus and A. mellea is increasingly wide concerned, the market quantity demanded of them is gradually increased and the demand outstrips the supply. The symbiotic A. mellea and P. umbellatus are both the medicinal and edible fungi with diverse activities, including hypoglycemic action, improve immunity and antitumor and so on...
August 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29134727/a-srna-in-a-reduced-mutualistic-symbiont-genome-regulates-its-own-gene-expression
#5
Margaret W Thairu, Siyuan Cheng, Allison K Hansen
Similar to other nutritional endosymbionts that are obligate for host survival, the mutualistic aphid endosymbiont, Buchnera, has a highly reduced genome with few regulatory elements. Until recently, it was thought that aphid hosts were primarily responsible for regulating their symbiotic relationship. However, we recently revealed that Buchnera displays differential protein regulation, but not mRNA expression. We also identified a number of conserved small RNAs (sRNAs) that are expressed among Buchnera taxa...
November 13, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/29134155/foliar-microbiome-transplants-confer-disease-resistance-in-a-critically-endangered-plant
#6
Geoffrey Zahn, Anthony S Amend
There has been very little effort to incorporate foliar microbiomes into plant conservation efforts even though foliar endophytes are critically important to the fitness and function of hosts. Many critically endangered plants that have been extirpated from the wild are dependent on regular fungicidal applications in greenhouses that cannot be maintained for remote out-planted populations, which quickly perish. These fungicides negatively impact potentially beneficial fungal symbionts, which may reduce plant defenses to pathogens once fungicide treatments are stopped...
2017: PeerJ
https://www.readbyqxmd.com/read/29132740/effects-of-using-symbiotics-in-the-clinical-nutritional-evolution-of-patients-with-chronic-pancreatitis-study-prospective-randomized-controlled-double-blind
#7
Patricia Quadros Dos Santos, Jorge C Guedes, Rosangela P de Jesus, Raquel Rocha Dos Santos, Rosemeiri L Fiaconne
Patients with chronic pancreatitis (CP) present malabsorption and changes in nutritional status. In this prospective, randomized, controlled, double-blinded, intervention study, developed at the Clinic of Pancreas, we aimed to assess whether the use of symbiotics changes the nutritional status, the biochemical data and the intestinal rate of these patients. The intervention consisted of administering 12 g/day of symbiotics composed of Lactobacillus casei, Lactobacillus rhamnosus, Lactobacillus acidophilus, Bifidobacterium bifidum and fructooligosaccharides to the intervention group and 12 g/day of medium absorption complex carbohydrate to the control group...
April 2017: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/29132066/fungal-interactions-with-the-human-host-exploring-the-spectrum-of-symbiosis
#8
REVIEW
Rebecca A Hall, Mairi C Noverr
Fungi are ubiquitous transient or persistent human colonisers, and form the mycobiome with shifts in niche specific mycobiomes (dysbiosis) being associated with various diseases. These complex interactions of fungal species with the human host can be viewed as a spectrum of symbiotic relationships (i.e. commensal, parasitic, mutualistic, amensalistic). The host relevant outcome of the relationship is the damage to benefit ratio, elegantly described in the damage response framework. This review focuses on Candida albicans, which is the most well studied human fungal symbiont clinically and experimentally, its transition from commensalism to parasitism within the human host, and the factors that influence this relationship...
November 10, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/29131838/expanded-repertoire-of-kinetoplast-associated-proteins-and-unique-mitochondrial-dna-arrangement-of-symbiont-bearing-trypanosomatids
#9
Silvana Sant Anna de Souza, Carolina Moura Catta-Preta, João Marcelo P Alves, Danielle P Cavalcanti, Marta M G Teixeira, Erney P Camargo, Wanderley De Souza, Rosane Silva, Maria Cristina M Motta
In trypanosomatids, the kinetoplast is the portion of the single mitochondrion that is connected to the basal body and contains the kDNA, a network composed by circular and interlocked DNA. The kDNA packing is conducted by Kinetoplast Associated Proteins (KAPs), which are similar to eukaryotic histone H1. In symbiont-harboring trypanosomatids (SHTs) such as Angomonas deanei and Strigomonas culicis, a ß-proteobacterium co-evolves with the host in a mutualistic relationship. The prokaryote confers nutritional benefits to the host and affects its cell structure...
2017: PloS One
https://www.readbyqxmd.com/read/29129752/larval-development-of-the-symbiotic-pea-crab-pinnaxodes-chilensis-h-milne-edwards-1837-decapoda-brachyura-pinnotheridae-reared-in-laboratory
#10
M E Gonzalez-Canales, E Marco-Herrero, M Andreu-Cazenave, J I González-Gordillo
The complete larval development of Pinnaxodes chilensis (including four zoeal stages and a megalopa stage) is described and illustrated in detail for the first time. The descriptions are based on laboratory-reared larvae obtained from ovigerous females found inside specimens of the sea urchin Loxechinus albus collected in the coast of Valparaíso, Chile. In order to allow their correct differentiation of specimens from plankton samples, the larval stages of P. chilensis are compared with those from the other Pinnotheridae species whose larval development is known for the Chilean continental waters (Calyptraeotheres politus)...
November 9, 2017: Arthropod Structure & Development
https://www.readbyqxmd.com/read/29129280/daily-temperature-variation-and-extreme-high-temperatures-drive-performance-and-biotic-interactions-in-a-warming-world
#11
REVIEW
Robby Stoks, Julie Verheyen, Marie Van Dievel, Nedim Tüzün
We review the major patterns on the effects of daily temperature variation (DTV) and extreme high temperatures (EXT) on performance traits and the resulting outcome of biotic interactions in insects. EXT profoundly affects the outcome of all types of biotic interactions: competitive, predator-prey, herbivore-plant, host-pathogen/parasitoid and symbiotic interactions. Studies investigating effects of DTV on biotic interactions are few but also show strong effects on competitive and host-pathogen/parasitoid interactions...
October 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/29129275/how-micronutrients-influence-the-physiology-of-mosquitoes
#12
REVIEW
Crisalejandra Rivera-Pérez, Mark E Clifton, Fernando G Noriega
Micronutrients or non-energetic nutrients (NEN) are needed in reduced amounts, but are essential for many mosquito physiological processes that influence biological traits from vector competence to reproductive capacity. The NEN include amino acids (AA), vitamins, salts, metals and sterols. Free AA plays critical roles controlling most physiological processes, from digestion to reproduction. Particularly proline connects metabolic pathways in energy production, flight physiology and ammonia detoxification. Metal, in particular iron and calcium, salts, sterol and vitamin homeostasis are critical for cell signaling, respiration, metabolism and reproduction...
October 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/29127473/colorectal-cancer-and-thrombosis
#13
P A Rees, H W Clouston, S Duff, C C Kirwan
SIGNIFICANCE: Colorectal cancer (CRC), results in a hypercoagulable state which manifests clinically as venous thromboembolism (VTE), often presenting as a deep vein thrombosis (DVT) or pulmonary embolism (PE). The consequences of VTE in CRC can be devastating, resulting in long-term morbidity and are a frequent cause of death, even amongst those who would have otherwise had a favourable cancer prognosis. The incidence of VTE in all cancers is increasing, whilst the exact incidence of VTE in CRC is likely to be underestimated...
November 10, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/29126983/yeast-like-microorganisms-in-the-scale-insect-kermes-quercus-insecta-hemiptera-coccomorpha-kermesidae-newly-acquired-symbionts
#14
Elżbieta Podsiadło, Katarzyna Michalik, Anna Michalik, Teresa Szklarzewicz
Scale insects, like other plant sap-consumers, are host to symbiotic microorganisms which provide them with the substances missing from their diet. In contrast to most scale insects, Kermes quercus (Linnaeus) was regarded as asymbiotic. Our histological and ultrastructural observations show that in the body of the feeding stages of K. quercus collected in two locations (Warsaw and Cracow), numerous yeast-like microorganisms occur. These microorganisms were localized in the cytoplasm of fat body cells. The yeast-like microorganisms were observed neither in other organs of host insect nor in the eggs...
November 7, 2017: Arthropod Structure & Development
https://www.readbyqxmd.com/read/29126772/data-driven-methods-to-diversify-knowledge-of-human-psychology
#15
Rachael E Jack, Carlos Crivelli, Thalia Wheatley
Psychology aims to understand real human behavior. However, cultural biases in the scientific process can constrain knowledge. We describe here how data-driven methods can relax these constraints to reveal new insights that theories can overlook. To advance knowledge we advocate a symbiotic approach that better combines data-driven methods with theory.
November 7, 2017: Trends in Cognitive Sciences
https://www.readbyqxmd.com/read/29124895/defining-the-core-microbiome-of-the-symbiotic-dinoflagellate-symbiodinium
#16
Caitlin A Lawson, Jean-Baptiste Raina, Tim Kahlke, Justin R Seymour, David J Suggett
Dinoflagellates of the genus Symbiodinium underpin the survival and ecological success of corals. The use of cultured strains has been particularly important to disentangle the complex life history of Symbiodinium and their contribution to coral host physiology. However, these cultures typically harbour abundant bacterial communities which likely play important, but currently unknown, roles in Symbiodinium biology. We characterised the bacterial communities living in association with a wide phylogenetic diversity of Symbiodinium cultures (18 types spanning 5 clades) to define the core Symbiodinium microbiome...
November 10, 2017: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/29124841/regulation-of-cysteine-residues-in-lsrb-proteins-from-sinorhizobium-meliloti-under-free-living-and-symbiotic-oxidative-stress
#17
Guirong Tang, Shenghui Xing, Sunjun Wang, Liangliang Yu, Xuan Li, Christian Staehelin, Menghua Yang, Li Luo
The development of legume nitrogen-fixing nodules is regulated by reactive oxygen species (ROS) produced by symbionts. Several regulators from Rhizobium are involved in ROS sensing. In a previous study, we found that Sinorhizobium meliloti LsrB regulates lipopolysaccharide production and is associated with H2 O2 accumulation in alfalfa (Medicago sativa) nodules. However, its underlying regulatory mechanism remains unclear. Here, we report that the cysteine residues in LsrB are required for adaptation to oxidative stress, gene expression, alfalfa nodulation and nitrogen fixation...
November 10, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/29122865/draft-genome-sequence-of-burkholderia-contaminans-293k04b-an-endosymbiont-of-the-sponge-derived-fungus-stachylidium-bicolor
#18
Katja M Fisch, Cristina Silva Pereira, Olga Genilloud, Celso Almeida, Till F Schäberle
Here, we present the draft genome of the endofungal symbiotic bacterium Burkholderia contaminans 293K04B, isolated from Stachylidium bicolor 293K04 (Ascomycota). The fungus was originally isolated from the sponge Callyspongia cf. C. flammeaS. bicolor 293K04 produces the endolides A-B, bioactive cyclic peptides possibly biosynthesized by its endobacterium B. contaminans 293K04B.
November 9, 2017: Genome Announcements
https://www.readbyqxmd.com/read/29121239/overproduction-of-s-meliloti-argc-n-acetyl-gamma-glutamyl-phosphate-reductase-promotes-growth-delay-and-inefficient-nodules
#19
Carmen Vargas-Lagunas, Yolanda Mora, Rafael Díaz, Gabriel Martínez-Batallar, Lourdes Girard, Sergio Encarnación, Humberto Peralta, Jaime Mora
argC encodes N-acetyl-gamma-glutamyl phosphate reductase, the enzyme that catalyzes the high-energy consuming third step in the arginine synthesis pathway. A comparative analysis revealed two translation start sites in argC from Sinorhizobium meliloti. To determine whether both protein versions are synthesized in the organism and their functional role, we obtained genetic constructs with one (1S) or two (2S) start sites, with promoters of low (pspeB) or high (plac) transcriptional rate. The constructs were transferred to the S...
November 7, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29120483/azospirillum-brasilense-laboratory-maintenance-and-genetic-manipulation
#20
Jessica Gullett, Lindsey O'Neal, Tanmoy Mukherjee, Gladys Alexandre
Bacteria of the genus Azospirillum, including the most comprehensively studied Azospirillum brasilense, are non-pathogenic soil bacteria that promote the growth of diverse plants, making them an attractive model to understand non-symbiotic, beneficial plant-bacteria associations. Research into the physiology and genetics of these organisms spans decades and a range of molecular tools and protocols have been developed for allelic exchange mutagenesis, in trans expression of genes, and fusions to reporter genes...
November 9, 2017: Current Protocols in Microbiology
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