Read by QxMD icon Read


Chiew Foan Chin, Hooi Sin Tan
In many tropical countries with agriculture as the mainstay of the economy, tropical crops are commonly cultivated at the plantation scale. The successful establishment of crop plantations depends on the availability of a large quantity of elite seedling plants. Many plantation companies establish plant tissue culture laboratories to supply planting materials for their plantations and one of the most common applications of plant tissue culture is the mass propagation of true-to-type elite seedlings. However, problems encountered in tissue culture technology prevent its applications being widely adopted...
May 4, 2018: Proteomes
Hooi Sin Tan, Richard P Jacoby, Meilina Ong-Abdullah, Nicolas L Taylor, Susan Liddell, Wong Wei Chee, Chiew Foan Chin
Oil palm is one of the most productive oil bearing crops grown in Southeast Asia. Due to the dwindling availability of agricultural land and increasing demand for high yielding oil palm seedlings, clonal propagation is vital to the oil palm industry. Most commonly, leaf explants are used for in vitro micropropagation of oil palm and to optimize this process it is important to unravel the physiological and molecular mechanisms underlying somatic embryo production from leaves. In this study, a proteomic approach was used to determine protein abundance of mature oil palm leaves...
April 2017: Electrophoresis
Marcus Jenn Yang Chee, Grantley W Lycett, Teng-Jin Khoo, Chiew Foan Chin
Production of vanillin by bioengineering has gained popularity due to consumer demand toward vanillin produced by biological systems. Natural vanillin from vanilla beans is very expensive to produce compared to its synthetic counterpart. Current bioengineering works mainly involve microbial biotechnology. Therefore, alternative means to the current approaches are constantly being explored. This work describes the use of vanillin synthase (VpVAN), to bioconvert ferulic acid to vanillin in a plant system. The VpVAN enzyme had been shown to directly convert ferulic acid and its glucoside into vanillin and its glucoside, respectively...
January 2017: Molecular Biotechnology
Melissa Yit Yee Kam, Li Chin Chai, Chiew Foan Chin
Aponogeton ulvaceus Baker (Aponogetonaceae) is a commercially important ornamental aquatic plant species with traditional medicinal uses. Due to the low survival rate of seedlings, propagation by conventional means has been met with many difficulties. In this study, botanical aspects of A. ulvaceus were examined with regards to the morphology, anatomy and physiology of the plant and an efficient protocol for its in vitro propagation using immature tuber explants has been established. The existence of glandular trichomes on the leaves was discovered and the occurrence of circumnutation in A...
2016: SpringerPlus
Hooi Sin Tan, Susan Liddell, Meilina Ong Abdullah, Wei Chee Wong, Chiew Foan Chin
UNLABELLED: Oil palm tissue culture is one way to produce superior oil palm planting materials. However, the low rate of embryogenesis is a major hindrance for the adoption of this technology in oil palm tissue culture laboratories. In this study, we use proteomic technologies to compare differential protein profiles in leaves from palms of high and low proliferation rates in tissue culture in order to understand the underlying biological mechanism for the low level of embryogenesis. Two protein extraction methods, namely trichloroacetic acid/acetone precipitation and polyethylene glycol fractionation were used to produce total proteins and fractionated protein extracts respectively, with the aim of improving the resolution of protein species using two-dimensional gel electrophoresis...
June 30, 2016: Journal of Proteomics
Subhra Chakraborty, Ghasem Hosseini Salekdeh, Pingfang Yang, Sun Hee Woo, Chiew Foan Chin, Chris Gehring, Paul A Haynes, Mehdi Mirzaei, Setsuko Komatsu
In the rapidly growing economies of Asia and Oceania, food security has become a primary concern. With the rising population, growing more food at affordable prices is becoming even more important. In addition, the predicted climate change will lead to drastic changes in global surface temperature and changes in rainfall patterns that in turn will pose a serious threat to plant vegetation worldwide. As a result, understanding how plants will survive in a changing climate will be increasingly important. Such challenges require integrated approaches to increase agricultural production and cope with environmental threats...
July 2, 2015: Journal of Proteome Research
Louise Foan, Maria Domercq, Raúl Bermejo, Jesús Miguel Santamaría, Valérie Simon
Polycyclic aromatic hydrocarbon (PAH) atmospheric deposition was evaluated at a remote site in Northern Spain using moss biomonitoring with Hylocomium splendens (Hedw.) Schimp., and by measuring the total deposition fluxes of PAHs. The year-long study allowed seasonal variations of PAH content in mosses to be observed, and these followed a similar trend to those of PAH fluxes in total deposition. Generally, atmospheric deposition of PAHs is greater in winter than in summer, due to more PAH emissions from domestic heating, less photoreactivity of the compounds, and intense leaching of the atmosphere by wet deposition...
January 2015: Chemosphere
L Foan, S Leblond, L Thöni, C Raynaud, J M Santamaría, M Sebilo, V Simon
Polycyclic aromatic hydrocarbon (PAH) concentrations and N, C stable isotope signatures were determined in mosses Hypnum cupressiforme Hedw. from 61 sites of 3 European regions: Île-de-France (France); Navarra (Spain); the Swiss Plateau and Basel area (Switzerland). Total PAH concentrations of 100-700 ng g(-1), as well as δ(13)C values of -32 to -29‰ and δ(15)N values of -11 to -3‰ were measured. Pearson correlation tests revealed opposite trends between high molecular weight PAH (4-6 aromatic rings) content and δ(13)C values...
January 2014: Environmental Pollution
H Harmens, L Foan, V Simon, G Mills
Worldwide there is concern about the continuing release of persistent organic pollutants (POPs) into the environment. In this study we review the application of mosses as biomonitors of atmospheric deposition of POPs. Examples in the literature show that mosses are suitable organisms to monitor spatial patterns and temporal trends of atmospheric concentrations or deposition of POPs. These examples include polycyclic aromatic hydrocarbons (PAHs), polychlorobiphenyls (PCBs), dioxins and furans (PCDD/Fs), and polybrominated diphenyl ethers (PBDEs)...
February 2013: Environmental Pollution
L Foan, V Simon
A factorial design was used to optimize the extraction of polycyclic aromatic hydrocarbons (PAHs) from mosses, plants used as biomonitors of air pollution. The analytical procedure consists of pressurized liquid extraction (PLE) followed by solid-phase extraction (SPE) cleanup, in association with analysis by high performance liquid chromatography coupled with fluorescence detection (HPLC-FLD). For method development, homogeneous samples were prepared with large quantities of the mosses Isothecium myosuroides Brid...
September 21, 2012: Journal of Chromatography. A
William J McGeown, Annalena Venneri, Irving Kirsch, Luca Nocetti, Kathrine Roberts, Lisa Foan, Giuliana Mazzoni
This functional Magnetic Resonance Imaging (fMRI) study investigated high and low suggestible people responding to two visual hallucination suggestions with and without a hypnotic induction. Participants in the study were asked to see color while looking at a grey image, and to see shades of grey while looking at a color image. High suggestible participants reported successful alterations in color perception in both tasks, both in and out of hypnosis, and showed a small benefit if hypnosis was induced. Low suggestible people could not perform the tasks successfully with or without the hypnotic induction...
March 2012: Consciousness and Cognition
Vinh Thuc Le, Norashikin Sarpan, Ky Huynh, Siew-Eng Ooi, Suhaimi Napis, Chai-Ling Ho, Meilina Ong-Abdullah, Chiew-Foan Chin, Parameswari Namasivayam
In this study, we report the molecular characterization of clone Eg707 isolated from cell suspension culture of the oil palm. The deduced polypeptide of clone Eg707 is highly similar to an unknown protein from Arabidopsis thaliana. The presence of an Ald-Xan-dh-C2 superfamily domain in the deduced protein sequence suggested that Eg707 protein might be involved in abscisic acid biosynthesis. Eg707 might be present as a single copy gene in the oil palm genome. This gene is highly expressed in tissue cultured materials compared to vegetative and reproductive tissues, suggesting a role of this gene during oil palm somatic embryogenesis or at the early stages of embryo development...
June 2011: Molecular Biotechnology
Giuliana Mazzoni, Lisa Foan, Michael E Hyland, Irving Kirsch
OBJECTIVE: To assess the effects of modeling and its interaction with gender in the production of psychogenic symptoms. DESIGN: Healthy volunteers were asked to inhale an inert substance described as a suspected environmental toxin that had been reported to provoke 4 physical symptoms. Subsequently, half of the participants observed a confederate inhale and display the 4 expected symptoms. To control for the general tendency of women to report more physical symptoms than men, participants were also asked to rate the presence of 4 unexpected symptoms...
March 2010: Health Psychology: Official Journal of the Division of Health Psychology, American Psychological Association
Patrick H Dyke, Colin Foan, Heidelore Fiedler
This study focused on emissions of polychlorinated biphenyls (PCB) and polycyclic aromatic hydrocarbons (PAH) from incineration and power generation processes. Increased concern over human exposure to both classes of compounds has meant that environmental regulators need to assess the contribution made by emissions from regulated processes to human exposure. In the first part of an assessment in the UK we reviewed literature data on emissions of PCB, focusing on the dioxin-like PCB assigned toxic equivalency factors by the World Health Organization, and PAH...
January 2003: Chemosphere
P H Dyke, C Foan, M Wenborn, P J Coleman
UK government policy is to identify and control the sources of some chlorinated organic compounds including polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs), often known collectively as dioxins. This requires the gathering of information on the scale of releases of PCDD/PCDFs to all environmental media. While a number of recent studies have produced inventories of PCDD/PCDF emissions to air, this study, commissioned by Her Majesty's Inspectorate of Pollution (HMIP--now part of the Environment Agency), is the first attempt at producing a comprehensive UK inventory of emissions of dioxins to land and water from industrial and non-industrial processes...
November 27, 1997: Science of the Total Environment
W T Summerlin, C Broutbar, R B Foanes, R Payne, O Stutman, L Hayflick, R A Good
No abstract text is available yet for this article.
March 1973: Transplantation Proceedings
W W Pinsky, R M Lewis, C J Hartley, M L Entman
Left ventricular volume overload (LVVO) has been created in 18 dogs by anastomosing a Dacron conduit between the infrarenal abdominal aorta and inferior vena cava. The dogs previously were instrumented so that in the awake state LV pressure, systemic arterial pressure, LV dP/dt, myocardial segment length and excursion, and coronary and renal artery velocities could be monitored. The animals were stressed with separate infusions of alpha-adrenergic and beta-adrenergic agonists. Both at rest and with stress, over a 12-wk period, preejection, ejection, and contractility indices decreased...
November 1979: American Journal of Physiology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"