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https://www.readbyqxmd.com/read/28110279/walking-the-c4-pathway-past-present-and-future
#1
REVIEW
Robert T Furbank
The year 2016 marks 50 years since the publication of the seminal paper by Hatch and Slack describing the biochemical pathway we now know as C4 photosynthesis. This review provides insight into the initial discovery of this pathway, the clues which led Hatch and Slack and others to these definitive experiments, some of the intrigue which surrounds the international activities which led up to the discovery, and personal insights into the future of this research field. While the biochemical understanding of the basic pathways came quickly, the role of the bundle sheath intermediate CO2 pool was not understood for a number of years, and the nature of C4 as a biochemical CO2 pump then linked the unique Kranz anatomy of C4 plants to their biochemical specialization...
January 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28110189/anticancer-activity-of-baicalein-and-luteolin-studied-in-colorectal-adenocarcinoma-lovo-cells-and-in-drug-resistant-lovo-dx-cells
#2
Anna Palko-Labuz, Kamila Sroda-Pomianek, Anna Uryga, Edyta Kostrzewa-Suslow, Krystyna Michalak
Due to the type-specific diversity of cancer cells, an analysis and elucidation of molecular mechanisms responsible for anticancer properties of biologically active compounds are essential. Plant-derived polyphenolic compounds such as flavonoids may be useful in cancer chemoprevention or treatment because they influence diverse molecular pathways in cancer cells. In these studies anticancer activity of natural occurring flavones, baicalein and luteolin was investigated in colon cancer cells LoVo and in their drug resistant subline LoVo/Dx...
January 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28110143/non-denitrifying-polyphosphate-accumulating-organisms-obviate-requirement-for-anaerobic-condition
#3
A Anisa Cokro, Yingyu Law, Rohan B H Williams, Yeshi Cao, Per H Nielsen, Stefan Wuertz
Enhanced biological phosphorus removal (EBPR) is a widely used process in wastewater treatment that requires anaerobic/aerobic or anaerobic/anoxic cycling. Surprisingly, phosphorus (P) release was observed in the presence of nitrate in the anoxic compartment of the activated sludge tank in a full-scale treatment plant with the Modified Ludzack Ettinger configuration. We therefore studied the potential of this full-scale activated sludge community to perform EBPR under anoxic/aerobic cycling. The polyphosphate accumulating organism (PAO) Candidatus Accumulibacter represented 3...
January 3, 2017: Water Research
https://www.readbyqxmd.com/read/28109583/detection-of-recombinant-human-lactoferrin-and-lysozyme-produced-in-a-bitransgenic-cow
#4
Germán G Kaiser, Nicolás C Mucci, Vega González, Lourdes Sánchez, José A Parrón, María D Pérez, Miguel Calvo, Juan F Aller, Federico A Hozbor, Adrián A Mutto
Lactoferrin and lysozyme are 2 glycoproteins with great antimicrobial activity, being part of the nonspecific defensive system of human milk, though their use in commercial products is difficult because human milk is a limited source. Therefore, many investigations have been carried out to produce those proteins in biological systems, such as bacteria, yeasts, or plants. Mammals seem to be more suitable as expression systems for human proteins, however, especially for those that are glycosylated. In the present study, a bicistronic commercial vector containing a goat β-casein promoter and an internal ribosome entry site fragment between the human lactoferrin and human lysozyme genes was developed to allow the introduction of both genes into bovine adult fibroblasts in a single transfection...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109289/plantamajoside-from-plantago-asiatica-modulates-human-umbilical-vein-endothelial-cell-dysfunction-by-glyceraldehyde-induced-ages-via-mapk-nf-%C3%AE%C2%BAb
#5
Won-Rak Son, Mi-Hyun Nam, Chung-Oui Hong, Yoonsook Kim, Kwang-Won Lee
BACKGROUND: Plantago asiatica has been traditionally used for traditional medicine around East Asia. Plantamajoside (PM), which is isolated from this plant, is known for biological properties including anti-inflammation and antioxidant activity. To demonstrate the biological activity of PM against endothelial dysfunction induced by advanced glycation end-products (AGEs), a cellular inflammatory mechanism system was evaluated in human umbilical vein endothelial cells (HUVECs). METHODS: We obtained PM through previous research in our laboratory...
January 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28109285/korean-mistletoe-viscum-album-coloratum-extract-regulates-gene-expression-related-to-muscle-atrophy-and-muscle-hypertrophy
#6
Juseong Jeong, Choon-Ho Park, Inbo Kim, Young-Ho Kim, Jae-Min Yoon, Kwang-Soo Kim, Jong-Bae Kim
BACKGROUND: Korean mistletoe (Viscum album coloratum) is a semi-parasitic plant that grows on various trees and has a diverse range of effects on biological functions, being implicated in having anti-tumor, immunostimulatory, anti-diabetic, and anti-obesity properties. Recently, we also reported that Korean mistletoe extract (KME) improves endurance exercise in mice, suggesting its beneficial roles in enhancing the capacity of skeletal muscle. METHODS: We examined the expression pattern of several genes concerned with muscle physiology in C2C12 myotubes cells to identify whether KME inhibits muscle atrophy or promotes muscle hypertrophy...
January 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28109283/ethanol-extracted-cameroonian-propolis-exerts-estrogenic-effects-and-alleviates-hot-flushes-in-ovariectomized-wistar-rats
#7
Stéphane Zingue, Chantal Beatrice Magne Nde, Thomas Michel, Derek Tantoh Ndinteh, Jules Tchatchou, Moïse Adamou, Xavier Fernandez, Fernand-Nestor Tchuenguem Fohouo, Colin Clyne, Dieudonné Njamen
BACKGROUND: Since the biological properties of propolis depend to the plants that can be found in a specific region, propolis from unexplored regions attracts the attention of scientists. Ethanolic extract of Cameroonian propolis (EEP) is used to treat various ailments including gynecological problems and amenorrhea. Since there were no scientific data to support the above claims, the present study was therefore undertaken to assess estrogenic properties of Cameroonian propolis. METHODS: To achieve our goal, the ability of EEP to induce MCF-7 cells proliferation in E-screen assay as well as to activate estrogen receptors α (ERα) and β (ERβ) in cell-based reporter gene assays using human embryonic kidney cells (HEK293T) transfected with ERs was tested...
January 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28109168/integrated-omics-analysis-of-specialized-metabolism-in-medicinal-plants
#8
Amit Rai, Kazuki Saito, Mami Yamazaki
Medicinal plants are the rich source of highly diverse specialized metabolites with important pharmacological properties. Until recently, plant biologists were limited in their approach to explore biosynthetic pathways of these metabolites, mainly due to the scarcity of plant genomics resources. Recent advancements in the high-throughput large-scale analytical methods have enabled plant biologists to discover biosynthetic pathways for important plant-based medicinal metabolites. Reduced cost to generate omics datasets, and the development of computational tools for their analysis and integration have led to the elucidation of biosynthetic pathways of several plant origin bio-active metabolites...
January 21, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28109049/production-of-the-antibiotic-secondary-metabolite-solanapyrone-a-by-the-fungal-plant-pathogen-ascochyta-rabiei-during-fruiting-body-formation-in-saprobic-growth
#9
Wonyong Kim, Jeong-Jin Park, Frank M Dugan, Tobin L Peever, David R Gang, George Vandemark, Weidong Chen
Fungi are noted producers of a diverse array of secondary metabolites, many of which are of pharmacological importance. However, the biological roles of the vast majority of these molecules during the fungal life cycle in nature remain elusive. Solanapyrones are polyketide-derived secondary metabolites produced by diverse fungal species including the plant pathogen Ascochyta rabiei. This molecule was originally thought to function as a phytotoxin facilitating pathogenesis of A. rabiei. Chemical profiling and gene expression studies showed that solanapyrone A was specifically produced during saprobic, but not parasitic growth of A...
January 21, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28108024/isolation-of-isoflavones-from-iris-kashmiriana-baker-as-potential-anti-proliferative-agents-targeting-nf-kappab
#10
Afroze Alam, Varun Jaiswal, Sohail Akhtar, B S Jayashree, K L Dhar
Cancer is possibly one of the most devastating and complex disease and therefore involves chemotherapy as one of the frontline strategies in its therapy. However, expected toxicity and resistance with chemotherapeutic agents encourage us to use the plant derived natural chemotherapeutic sources at the clinical stage of cancer therapy. In view of this strategy, herein new glycosides and isoflavonoids were isolated from Iris kashmiriana Baker and subjected to structure elucidation followed by their biological evaluation...
January 17, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28107573/diversity-and-bioprospecting-of-actinomycete-endophytes-from-the-medicinal-plants
#11
REVIEW
Nalini Monnanda Somaiah, Harishchandra Sripathy Prakash
The endophytic actinomycetes constitute one of the fascinating group of microorganisms associated with a wide range of plant species. The diversity of actinomycetes in plants and their tissue parts is a matter of debate as no consensus are derived between individual studies. Nevertheless, their diversity correlates with the occurrence in plant species harbored in unique regions of biologically diverse areas called 'hot spots'. Recent advances in the isolation techniques have facilitated the isolation of rare taxa from these environments...
January 20, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28107448/potential-of-endophytic-fungi-isolated-from-cotton-roots-for-biological-control-against-verticillium-wilt-disease
#12
Yuan Yuan, Hongjie Feng, Lingfei Wang, Zhifang Li, Yongqiang Shi, LiHong Zhao, Zili Feng, Heqin Zhu
Verticillium wilt is a soil-borne disease, and severely limits the development of cotton production. To investigate the role of endophytic fungi on Verticillium wilt, CEF-818 (Penicillium simplicissimum), CEF-714 (Leptosphaeria sp.), CEF-642 (Talaromyces flavus.) and CEF-193 (Acremonium sp.) isolated from cotton roots were used to assess their effects against cotton wilt disease caused by a defoliating V. dahliae strain Vd080. In the greenhouse, all treatments significantly reduced disease incidence and disease index, with the control efficacy ranging from 26% (CEF-642) to 67% (CEF-818) at 25 days (d) after inoculation...
2017: PloS One
https://www.readbyqxmd.com/read/28107056/selfing-local-mate-competition-and-reinforcement
#13
Mark D Rausher
Reinforcement can contribute to speciation by increasing the strength of prezygotic isolating mechanisms. Theoretical analyses over the past two decades have demonstrated that conditions for reinforcement are not unduly restrictive, and empirical investigations have documented over a dozen likely cases, indicating that it may be a reasonably common phenomenon in nature. Largely uncharacterized, however, is the diversity of biological scenarios that can create the reduced hybrid fitness that drives reinforcement...
February 2017: American Naturalist
https://www.readbyqxmd.com/read/28106264/role-of-microbial-inoculation-and-industrial-by-product-phosphogypsum-on-growth-and-nutrients-uptake-of-maize-zea-mays-l-grown-in-calcareous-soil
#14
Abdul-Aziz R Al-Enazy, Saud S Al-Oud, Fahad N Al-Barakah, R A Adel, Usman
BACKGROUND: Alkaline soils with high calcium carbonate and low organic matter are deficient in plant nutrients availability. Use of organic and bio-fertilizers has been suggested to improve their properties. Therefore, a greenhouse experiment was conducted to evaluate the integrative role of phosphogypsum (PG; added at 0.0, 10, 30, and 50 g PG kg(-1) ), cow manure (CM; added at 50 g kg(-1) ) and mixed microbial inoculation (Incl; Azotobacter chroococcum, phosphate-solubilizing bacterium of Bacillus megaterium var...
January 20, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28105918/mirnacle-machine-learning-with-smote-and-random-forest-for-improving-selectivity-in-pre-mirna-ab-initio-prediction
#15
Yuri Bento Marques, Alcione de Paiva Oliveira, Ana Tereza Ribeiro Vasconcelos, Fabio Ribeiro Cerqueira
BACKGROUND: MicroRNAs (miRNAs) are key gene expression regulators in plants and animals. Therefore, miRNAs are involved in several biological processes, making the study of these molecules one of the most relevant topics of molecular biology nowadays. However, characterizing miRNAs in vivo is still a complex task. As a consequence, in silico methods have been developed to predict miRNA loci. A common ab initio strategy to find miRNAs in genomic data is to search for sequences that can fold into the typical hairpin structure of miRNA precursors (pre-miRNAs)...
December 15, 2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/28105572/proteome-wide-identification-of-iron-binding-proteins-of-xanthomonas-translucens-pv-undulosa-focus-on-secretory-virulent-proteins
#16
Ankita Sharma, Dixit Sharma, Shailender Kumar Verma
Xanthomonas translucens pv. undulosa (Xtu) causes Bacterial Leaf Streak disease in the staple food crops such as wheat and barley. The survival strategies of pathogen and host are determined by the complex interactions occurring between the host plants and the pathogenic microbes. Iron binding proteins are important in the plant-microbe interactions as they are indulged in enzyme catalysis, virulence, metabolic and transport activities. In the presented study, we have identified that ~9.8% of Xtu proteome possess iron binding sequence motifs...
January 19, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28105204/combining-fisetin-and-ionizing-radiation-suppresses-the-growth-of-mammalian-colorectal-cancers-in-xenograft-tumor-models
#17
Jyh-Der Leu, Bo-Shen Wang, Shu-Jun Chiu, Chun-Yuan Chang, Chien-Chih Chen, Fu-Du Chen, Shiirevnyamba Avirmed, Yi-Jang Lee
Fisetin (3,7,3',4'-tetrahydroxyflavone), which belongs to the flavonoid group of polyphenols and is found in a wide range of plants, has been reported to exhibit a number of biological activities in human cancer cells, including antioxidant, anti-inflammatory, antiangiogenic, anti-invasive and antiproliferative effects. Although previous in vitro studies have shown that fisetin treatment increases the apoptotic rate and enhances the radiosensitivity of human colorectal cancer cells, the in vivo effects of fisetin on tumor growth remain unclear...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28103929/chemical-composition-and-some-biological-activities-of-the-essential-oils-from-basil-ocimum-different-cultivars
#18
Arpi Avetisyan, Anahit Markosian, Margarit Petrosyan, Naira Sahakyan, Anush Babayan, Samvel Aloyan, Armen Trchounian
BACKGROUND: The plants belonging to the Ocimum genus of the Lamiaceae family are considered to be a rich source of essential oils which have expressed biological activity and use in different area of human activity. There is a great variety of chemotypes within the same basil species. Essential oils from three different cultivars of basil, O. basilicum var. purpureum, O. basilicum var. thyrsiflora, and O. citriodorum Vis. were the subjects of our investigations. METHODS: The oils were obtained by steam distillation in a Clevenger-type apparatus...
January 19, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28103873/masquelier-s-grape-seed-extract-from-basic-flavonoid-research-to-a-well-characterized-food-supplement-with-health-benefits
#19
REVIEW
Antje R Weseler, Aalt Bast
Careful characterization and standardization of the composition of plant-derived food supplements is essential to establish a cause-effect relationship between the intake of that product and its health effect. In this review we follow a specific grape seed extract containing monomeric and oligomeric flavan-3-ols from its creation by Jack Masquelier in 1947 towards a botanical remedy and nutraceutical with proven health benefits. The preparation's research history parallels the advancing insights in the fields of molecular biology, medicine, plant and nutritional sciences during the last 70 years...
January 19, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28103799/comparative-rna-seq-based-transcriptomic-analysis-of-bud-dormancy-in-grape
#20
Muhammad Khalil-Ur-Rehman, Long Sun, Chun-Xia Li, Muhammad Faheem, Wu Wang, Jian-Min Tao
BACKGROUND: Bud dormancy is an important biological phenomenon of perennial plants that enables them to survive under harsh environmental circumstances. Grape (Vitis vinifera) is one of the most grown fruit crop worldwide; however, underlying mechanisms involved in grape bud dormancy are not yet clear. This work was aimed to explore the underlying molecular mechanism regulating bud dormancy in grape. RESULTS: We have performed transcriptome and differential transcript expression analyses of "Shine Muscat" grape buds using the Illumina RNA-seq system...
January 19, 2017: BMC Plant Biology
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