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plant secondary metabolite

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https://www.readbyqxmd.com/read/28211478/ecology-and-genetics-affect-relative-invasion-success-of-two-echium-species-in-southern-australia
#1
Xiaocheng Zhu, Paul A Weston, Dominik Skoneczny, David Gopurenko, Lucie Meyer, Brendan J Lepschi, Ragan M Callaway, Geoff M Gurr, Leslie A Weston
Echium plantagineum and E. vulgare are congeneric exotics first introduced to Australia in the early 1800 s. There, E. plantagineum is now highly invasive, whereas E. vulgare has a limited distribution. Studies were conducted to evaluate distribution, ecology, genetics and secondary chemistry to shed light on factors associated with their respective invasive success. When sampled across geographically diverse locales, E. plantagineum was widespread and exhibited a small genome size (1 C = 0.34 pg), an annual life cycle, and greater genetic diversity as assessed by DNA sequence analysis...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28210892/secondary-metabolites-and-metal-content-dynamics-in-teucrium-montanum-l-and-teucrium-chamaedrys-l-from-habitats-with-serpentine-and-calcareous-substrate
#2
Nenad M Zlatić, Milan S Stanković, Zoran S Simić
The purpose of this comparative analysis is the determination of the total quantity of metals (Mg, Ca, K, Ni, Fe, Mn, Zn, Cu, Cr and Pb) in soil samples, above ground plant parts and tea made of plants Teucrium montanum and T. chamaedrys from different serpentine and calcareous habitats as well as of the total quantity of phenolic compounds and antioxidant activity. The obtained results showed that the quantities of certain metals (Mg, Fe, Ni and Mn) in the soil from the serpentine habitats were greater in comparison with other metals (Ca, Zn and Pb) which were more frequently found in the soil from the calcareous habitats...
March 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28208739/a-guide-to-the-variability-of-flavonoids-in-brassica-oleracea
#3
REVIEW
Vera Mageney, Susanne Neugart, Dirk C Albach
Flavonoids represent a typical secondary metabolite class present in cruciferous vegetables. Their potential as natural antioxidants has raised considerable scientific interest. Impacts on the human body after food consumption as well as their effect as pharmaceutical supplements are therefore under investigation. Their numerous physiological functions make them a promising tool for breeding purposes. General methods for flavonoid analysis are well established, though new compounds are still being identified...
February 8, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28208712/emerging-cytotoxic-alkaloids-in-the-battle-against-cancer-overview-of-molecular-mechanisms
#4
REVIEW
Zeina Habli, Georgio Toumieh, Maamoun Fatfat, Omar Nasser Rahal, Hala Gali-Muhtasib
Considered as the second deadliest disease globally, cancer has captured the attention of researchers who have been trying with perseverance to decode its hidden aspects, to find new prognosis methods, and to develop better and more effective treatments. Plants have continuously offered an excess of unique secondary metabolites with remarkable biological applications. Alkaloids, one of the most abundant metabolites, constitute a large conglomerate of basic heterocyclic nitrogen-containing natural compounds which are normally produced by plants as toxic substances...
February 8, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28208630/cocoa-and-grape-seed-byproducts-as-a-source-of-antioxidant-and-anti-inflammatory-proanthocyanidins
#5
María De La Luz Cádiz-Gurrea, Isabel Borrás-Linares, Jesús Lozano-Sánchez, Jorge Joven, Salvador Fernández-Arroyo, Antonio Segura-Carretero
Phenolic compounds, which are secondary plant metabolites, are considered an integral part of the human diet. Physiological properties of dietary polyphenols have come to the attention in recent years. Especially, proanthocyanidins (ranging from dimers to decamers) have demonstrated potential interactions with biological systems, such as antiviral, antibacterial, molluscicidal, enzyme-inhibiting, antioxidant, and radical-scavenging properties. Agroindustry produces a considerable amount of phenolic-rich sources, and the ability of polyphenolic structures to interacts with other molecules in living organisms confers their beneficial properties...
February 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28197163/quinolizidine-alkaloid-biosynthesis-in-lupins-and-prospects-for-grain-quality-improvement
#6
REVIEW
Karen M Frick, Lars G Kamphuis, Kadambot H M Siddique, Karam B Singh, Rhonda C Foley
Quinolizidine alkaloids (QAs) are toxic secondary metabolites found within the genus Lupinus, some species of which are commercially important grain legume crops including Lupinus angustifolius (narrow-leafed lupin, NLL), L. luteus (yellow lupin), L. albus (white lupin), and L. mutabilis (pearl lupin), with NLL grain being the most largely produced of the four species in Australia and worldwide. While QAs offer the plants protection against insect pests, the accumulation of QAs in lupin grain complicates its use for food purposes as QA levels must remain below the industry threshold (0...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28197160/digital-gene-expression-analysis-provides-insight-into-the-transcript-profile-of-the-genes-involved-in-aporphine-alkaloid-biosynthesis-in-lotus-nelumbo-nucifera
#7
Mei Yang, Lingping Zhu, Ling Li, Juanjuan Li, Liming Xu, Ji Feng, Yanling Liu
The predominant alkaloids in lotus leaves are aporphine alkaloids. These are the most important active components and have many pharmacological properties, but little is known about their biosynthesis. We used digital gene expression (DGE) technology to identify differentially-expressed genes (DEGs) between two lotus cultivars with different alkaloid contents at four leaf development stages. We also predicted potential genes involved in aporphine alkaloid biosynthesis by weighted gene co-expression network analysis (WGCNA)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28195390/self-assembly%C3%A2-of%C3%A2-renewable%C3%A2-nano-sized-triterpenoids
#8
REVIEW
Braja Gopal Bag, Rakhi Majumdar
Studies on plant metabolites have gained renewed interest in recent years because these can serve as renewable chemicals for the development of a sustainable society.Among various plant secondary metabolites, terpenoids constitute the major component and triterpenoids are the 30C subset of it.In recent years, triterpenoids have drawn the attention of scientific community due to many of its potential and realized applications in medicine, drug delivery, thermochromic materials, pollutant capture, catalysis, liquid crystals, etc...
February 14, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28194740/potential-of-burkholderia-seminalis-tc3-4-2r3-as-biocontrol-agent-against-fusarium-oxysporum-evaluated-by-mass-spectrometry-imaging
#9
Francisca Diana da Silva Araújo, Welington Luiz Araújo, Marcos Nogueira Eberlin
Species of genus Burkholderia display different interaction profiles in the environment, causing either several diseases in plants and animals or being beneficial to some plants, promoting their growth, and suppressing phytopathogens. Burkholderia spp. also produce many types of biomolecules with antimicrobial activity, which may be commercially used to protect crops of economic interest, mainly against fungal diseases. Herein we have applied matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) to investigate secondary metabolites produced by B...
February 13, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28192986/biosynthesis-based-quantitative-analysis-of-151-secondary-metabolites-of-licorice-to-differentiate-medicinal-glycyrrhiza-species-and-their-hybrids
#10
Wei Song, Xue Qiao, Kuan Chen, Ying Wang, Shuai Ji, Jin Feng, Kai Li, Yan Lin, Min Ye
Secondary metabolites are usually the bioactive components of medicinal plants. The difference in the secondary metabolisms of closely related plant species and their hybrids has rarely been addressed. In this study, we conducted a holistic secondary metabolomics analysis of three medicinal Glycyrrhiza species (G. uralensis, G. glabra, and G. inflata), which are used as the popular herbal medicine licorice. The Glycyrrhiza species (genotype) for 95 batches of samples were identified by DNA barcodes of the internal transcribed spacer and trnV-ndhC regions, and the chemotypes were revealed by LC/UV- or LC/MS/MS-based quantitative analysis of 151 bioactive secondary metabolites, including 17 flavonoid glycosides, 24 saponins, and 110 free phenolic compounds...
February 13, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28192813/passive-intestinal-absorption-of-representative-plant-secondary-metabolites-a-physicochemical-study
#11
Charlotte Petit, Martina Ceccarelli, Sylvian Cretton, Joëlle Houriet, Krystyna Skalicka-Woźniak, Philippe Christen, Pierre-Alain Carrupt, Laura Goracci, Jean-Luc Wolfender
Natural products are generally ingested as part of traditional herbal decoctions or in the current diet. However, in natural product research, the bioavailability of secondary metabolites is often poorly investigated. In this work, a systematic study was carried out in order to highlight the physicochemical parameters that mainly influence the passive intestinal absorption of natural products. For this, a representative set of natural products including alkaloids, coumarins, flavonoid aglycones and glycosides, and carboxylic acids was selected and their physicochemical properties were predicted using relevant Volsurf+ descriptors...
February 13, 2017: Planta Medica
https://www.readbyqxmd.com/read/28192458/transcriptome-analysis-of-hexaploid-hulless-oat-in-response-to-salinity-stress
#12
Bin Wu, Yani Hu, Pengjie Huo, Qian Zhang, Xin Chen, Zongwen Zhang
BACKGROUND: Oat is a cereal crop of global importance used for food, feed, and forage. Understanding salinity stress tolerance mechanisms in plants is an important step towards generating crop varieties that can cope with environmental stresses. To date, little is known about the salt tolerance of oat at the molecular level. To better understand the molecular mechanisms underlying salt tolerance in oat, we investigated the transcriptomes of control and salt-treated oat using RNA-Seq. RESULTS: Using Illumina HiSeq 4000 platform, we generated 72,291,032 and 356,891,432 reads from non-stressed control and salt-stressed oat, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28191024/recent-trends-in-pharmacological-activity-of-alkaloids-in-animal-colitis-potential-use-for-inflammatory-bowel-disease
#13
REVIEW
Ana Cristina Alves de Almeida, Felipe Meira de-Faria, Ricardo José Dunder, Luis Paulo Bognoni Manzo, Alba Regina Monteiro Souza-Brito, Anderson Luiz-Ferreira
Inflammatory bowel disease (IBD) is a chronic and disrupted inflammation of the gastrointestinal tract. IBD have two main conditions, Crohn's disease and ulcerative colitis, and have been extensively investigated in recent years. Antibiotics derived from salicylates, steroids, immunosuppressors, and anti-TNF therapy are part of the therapeutic arsenal for IBD. However, very often patients stop responding to treatments over the time. In this context, searching for alternative agents is crucial for IBD clinical management...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28188204/siderophore-product-ornibactin-is-required-for-the-bactericidal-activity-of-burkholderia-contaminans-ms14
#14
Peng Deng, Adam Foxfire, Jianhong Xu, Sonya M Baird, Jiayuan Jia, Keren H Delgado, Ronald Shin, Leif Smith, Shi-En Lu
Burkholderia contaminans MS14 was isolated from soil in Mississippi. When cultivated on nutrient broth-yeast extract (NBY) agar medium, the colonies exhibit bactericidal activity against a wide range of plant pathogenic bacteria. Only a bacteriostatic compound with siderophore activity was successfully purified, which was determined by nuclear magnetic resonance (NMR) to be ornibactin. The isolation of the bactericidal compound has not yet been achieved, thus, the exact nature of the bactericidal compound is still unknown...
February 10, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28187719/promotion-of-hepg2-cell-apoptosis-by-flower-of-allium-atroviolaceum-and-the-mechanism-of-action
#15
S Khazaei, R Abdul Hamid, N Mohd Esa, V Ramachandran, Ghomi Tabatabaee F Aalam, A Etemad, P Ismail
BACKGROUND: Liver cancer is a high incidence and fatal disease, the fifth most frequent cancer worldwide that is usually diagnosed at an advanced stage. The number of deaths from liver cancer has not declined even following various therapies. Plant secondary metabolites and their semi-synthetic derivatives play a principal role in anti-cancer drug therapy, since they are effective in the treatment of specific characteristics while also reducing side effects. Allium atroviolaceum, a plant of the genus Allium has been used in folk medicine to protect against several diseases...
February 10, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28182964/dietary-flavonoids-and-modulation-of-natural-killer-cells-implications-in-malignant-and-viral-diseases
#16
REVIEW
Markus Burkard, Christian Leischner, Ulrich M Lauer, Christian Busch, Sascha Venturelli, Jan Frank
Flavonoids are a large group of secondary plant metabolites present in the diet with numerous potentially health-beneficial biological activities. In addition to antioxidant, anti-inflammatory, cholesterol-lowering, and many other biological functions reported in the literature, flavonoids appear to inhibit cancer cell proliferation and stimulate immune function. Although the immunomodulatory potential of flavonoids has been intensively investigated, only little is known about their impact on natural killer (NK) cells...
January 24, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28177373/a-strategy-to-improve-nitrogen-utilization-reduce-environmental-impact-and-increase-performance-and-antioxidant-capacity-of-fattening-lambs-using-pomegranate-peel-extract
#17
M Rajabi, Y Rouzbehan, J Rezaei
Dietary natural plant secondary metabolites (PSM) extracted from a pomegranate peel (PP) byproduct have the potential to improve milk yield and the milk fatty acid profile of dairy cows. This experiment was performed to assess the influence of different dietary levels of PP extract (PPE) on feedlot performance, ruminal status, nutrient utilization, and antioxidant status in fattening Moghani lambs. Thirty-two lambs (initial BW of 22 ± 1.2 kg) were used in a completely randomized design with a 72-d period and 4 treatments: PPE0 (no extract), PPE15 (15 mL PPE/kg of diet DM), PPE30 (30 mL PPE/kg of diet DM), and PPE45 (45 mL PPE/kg of diet DM)...
January 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28169241/enhanced-cytotoxic-activity-of-endophytic-bacterial-extracts-from-adhatoda-beddomei-leaves-in-a549-lung-cancer-cell-lines
#18
Y Swarnalatha, Bhaswti Saha
AIM OF THE STUDY: The current study is aimed to isolate and study the efficacy of the anticancer activity of endophytic bacteria from adhatoda beddomei leaves. Endophytic bacteria, microorganisms can found in the plant tissues, like leaves, branches and roots and able to produce various novel secondary metabolites for the medicinal applications. METHODOLOGY: Endophytic bacteria were isolated from the leaves of the adhatoda beddomei leaves. The extract from the culture was tested for the cytotoxicity in A549 cell lines using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT)assay, dual staining and nuclear staining...
October 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28168155/diversity-oriented-synthesis-of-natural-product-like-libraries-containing-a-3-methylbenzofuran-moiety-for-the-discovery-of-new-chemical-elicitors
#19
Xingrui He, Xia Chen, Songbo Lin, Xiaochang Mo, Pengyong Zhou, Zhihao Zhang, Yaoyao Lu, Yu Yang, Haining Gu, Zhicai Shang, Yonggen Lou, Jun Wu
Natural products are a major source of biological molecules. The 3-methylfuran scaffold is found in a variety of plant secondary metabolite chemical elicitors that confer host-plant resistance against insect pests. Herein, the diversity-oriented synthesis of a natural-product-like library is reported, in which the 3-methylfuran core is fused in an angular attachment to six common natural product scaffolds-coumarin, chalcone, flavone, flavonol, isoflavone and isoquinolinone. The structural diversity of this library is assessed computationally using cheminformatic analysis...
February 2017: ChemistryOpen
https://www.readbyqxmd.com/read/28164793/small-rnas-regulate-the-biocontrol-property-of-fluorescent-pseudomonas-strain-psd
#20
Anamika Upadhyay, Mandira Kochar, Ashutosh Upadhyay, Soumya Tripathy, Manchikatla Venkat Rajam, Sheela Srivastava
The production of biocontrol factors by Pseudomonads is reported to be controlled at the post-transcriptional level by the GacS/GacA signal transduction pathway. This involves RNA-binding translational repressor proteins, RsmA and RsmE, and the small regulatory RNAs (sRNAs) RsmX, RsmY, and RsmZ. While the former represses genes involved in secondary metabolite production, the latter relieves this repression at the end of exponential growth. We have studied the fluorescent Pseudomonas strain Psd, possessing good biocontrol potential, and confirmed the presence of rsmY and rsmZ by PCR amplification...
March 2017: Microbiological Research
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