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https://www.readbyqxmd.com/read/28304072/dealing-with-iron-metabolism-in-rice-from-breeding-for-stress-tolerance-to-biofortification
#1
Railson Schreinert Dos Santos, Artur Teixeira de Araujo, Camila Pegoraro, Antonio Costa de Oliveira
Iron is a well-known metal. Used by humankind since ancient times in many different ways, this element is present in all living organisms, where, unfortunately, it represents a two-way problem. Being an essential block in the composition of different proteins and metabolic pathways, iron is a vital component for animals and plants. That is why iron deficiency has a severe impact on the lives of different organisms, including humans, becoming a major concern, especially in developing countries where access to adequate nutrition is still difficult...
March 16, 2017: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/28299516/effects-of-nitrogen-and-water-addition-on-trace-element-stoichiometry-in-five-grassland-species
#2
Jiangping Cai, Jacob Weiner, Ruzhen Wang, Wentao Luo, Yongyong Zhang, Heyong Liu, Zhuwen Xu, Hui Li, Yuge Zhang, Yong Jiang
A 9-year manipulative experiment with nitrogen (N) and water addition, simulating increasing N deposition and changing precipitation regime, was conducted to investigate the bioavailability of trace elements, iron (Fe), manganese (Mn), copper (Cu), and zinc (Zn) in soil, and their uptake by plants under the two environmental change factors in a semi-arid grassland of Inner Mongolia. We measured concentrations of trace elements in soil and in foliage of five common herbaceous species including 3 forbs and 2 grasses...
March 15, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28294074/probiotics-as-a-tool-to-biosynthesize-metallic-nanoparticles-research-reports-and-patents-survey
#3
Nida Ahktar, Kamla Pathak
BACKGROUND: Probiotics are the live microbes that exert beneficial effects on the health of the host cell and thus creating novel nanoformulations via probiotic bacteria have gained tremendous momentum recently. The probiotic bacteria are being employed in synthesizing or more specifically biosynthesizing several nanoparticles like metallic as well as non-metallic nanoparticles. Biosynthesis of metallic nanoparticles is currently focused of research nowadays due to several applications thereof...
March 13, 2017: Recent Patents on Drug Delivery & Formulation
https://www.readbyqxmd.com/read/28287426/phosphorus-and-iron-deficiencies-influences-rice-shoot-growth-in-an-oxygen-dependent-manner-insight-from-upland-and-lowland-rice
#4
Jenjira Mongon, Nanthana Chaiwong, Nadia Bouain, Chanakan Prom-U-Thai, David Secco, Hatem Rouached
Rice is the main staple crop for one-third of the world population. To maximize yields, large quantities and constant input of fertilizers containing essential nutrients such as phosphorus (P) and iron (Fe) are added. Rice can germinate in both aerobic and anaerobic conditions, but the crosstalk between oxygen (O₂) and nutrients such as P and Fe on plant growth remains obscure. The aim of this work was to test whether such interactions exist, and, if so, if they are conserved between up- and lowland rice varieties...
March 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28285416/a-naturally-occurring-conditional-albino-mutant-in-rice-caused-by-defects-in-the-plastid-localized-osabci8-transporter
#5
Xiuyu Zeng, Ran Tang, Herong Guo, Shanwen Ke, Bin Teng, Yu-Hung Hung, Zhenjiang Xu, Xin-Ming Xie, Tzung-Fu Hsieh, Xiang-Qian Zhang
A wide range of molecules are transported across membranes by the ATP binding cassette (ABC) transporters. Plants possess a collection of ABC proteins bearing similarities to the components of prokaryotic multi subunit ABC transporters, designed as ABC group I. However the functions of most of them are not well understood. Here, we characterized a naturally occurring rice mutant that exhibited albino phenotype under continuous rainy days in the field, but gradually recovered to normal green after the rainy season...
March 11, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28285373/rhizobia-a-potential-biocontrol-agent-for-soilborne-fungal-pathogens
#6
REVIEW
Krishnashis Das, Radha Prasanna, Anil Kumar Saxena
Rhizobia are a group of organisms that are well known for their ability to colonize root surfaces and form symbiotic associations with legume plants. They not only play a major role in biological nitrogen fixation but also improve plant growth and reduce disease incidence in various crops. Rhizobia are known to control the growth of many soilborne plant pathogenic fungi belonging to different genera like Fusarium, Rhizoctonia, Sclerotium, and Macrophomina. Antagonistic activity of rhizobia is mainly attributed to production of antibiotics, hydrocyanic acid (HCN), mycolytic enzymes, and siderophore under iron limiting conditions...
March 12, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28285085/silencing-of-the-fro1-gene-and-its-effects-on-iron-partition-in-nicotiana-benthamiana
#7
Florinda Gama, Teresa Saavedra, Susana Dandlen, Amarilis de Varennes, Pedro J Correia, Maribela Pestana, Gustavo Nolasco
To evaluate the dynamic role of the ferric-chelate reductase enzyme (FCR) and to identify possible pathways of regulation of its activity in different plant organs an investigation was conducted by virus-induced gene silencing (VIGS) using tobacco rattle virus (TRV) to silence the ferric reductase oxidase gene (FRO1) that encodes the FCR enzyme. Half of Nicotiana benthamiana plants received the VIGS vector and the rest remained as control. Four treatments were imposed: two levels of Fe in the nutrient solution (0 or 2...
March 6, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28278781/phytoremediation-potential-of-water-caltrop-trapa-natans-l-using-municipal-wastewater-of-the-activated-sludge-process-based-municipal-wastewater-treatment-plant
#8
Vinod Kumar, A K Chopra
Phytoremediation experiments were carried out to assess the phytoremediation potential of water caltrop (Trapa natans L.) using municipal wastewater collected from the activated sludge process- (ASP) based municipal wastewater treatment plant. The results revealed that T. natans significantly (P ≤ .05/P ≤ .01/P ≤ .001) reduced the contents of total dissolved solids (TDS), electrical conductivity (EC), biochemical oxygen demand (BOD5), chemical oxygen demand, total Kjeldahl nitrogen, phosphate ([Formula: see text]), sodium (Na(+)), potassium (K(+)), calcium (Ca(2+)), magnesium (Mg(2+)), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), lead (Pb), zinc (Zn), standard plate count, and most probable number of the municipal wastewater after phytoremediation experiments...
February 22, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28278216/a-new-transgenic-rice-line-exhibiting-enhanced-ferric-iron-reduction-and-phytosiderophore-production-confers-tolerance-to-low-iron-availability-in-calcareous-soil
#9
Hiroshi Masuda, Erika Shimochi, Tatsuro Hamada, Takeshi Senoura, Takanori Kobayashi, May Sann Aung, Yasuhiro Ishimaru, Yuko Ogo, Hiromi Nakanishi, Naoko K Nishizawa
Iron (Fe) deficiency is a critical agricultural problem, especially in calcareous soil, which is distributed worldwide. Rice plants take up Fe(II) from soil through a OsIRT1 transporter (Strategy I-related system) and also take up Fe(III) via a phytosiderophore-based system (Strategy II system). However, rice plants are susceptible to low-Fe conditions because they have low Fe(III) reduction activity and low-level phytosiderophore secretion. Previously, we produced transgenic rice plants expressing a mutationally reconstructed yeast ferric chelate reductase, refre1/372, under the control of the OsIRT1 promoter...
2017: PloS One
https://www.readbyqxmd.com/read/28273516/2-d-clinorotation-alters-the-uptake-of-some-nutrients-in-arabidopsis-thaliana
#10
Ellen Polinski, Oliver Schueler, Lars Krause, Monika A Wimmer, Ruth Hemmersbach, Heiner E Goldbach
Future long-term spaceflight missions rely on bioregenerative life support systems (BLSS) in order to provide the required resources for crew survival. Higher plants provide an essential part since they supply food and oxygen and recycle carbon dioxide. There are indications that under space conditions plants might be inefficient regarding the uptake, transport and distribution of nutrients, which in turn affects growth and metabolism. Therefore, Arabidopsis thaliana (Col-0) seeds were germinated and grown for five days under fast clinorotation (2-D clinostat, 60rpm) in order to simulate microgravity...
February 16, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28272456/computer-vision-and-machine-learning-for-robust-phenotyping-in-genome-wide-studies
#11
Jiaoping Zhang, Hsiang Sing Naik, Teshale Assefa, Soumik Sarkar, R V Chowda Reddy, Arti Singh, Baskar Ganapathysubramanian, Asheesh K Singh
Traditional evaluation of crop biotic and abiotic stresses are time-consuming and labor-intensive limiting the ability to dissect the genetic basis of quantitative traits. A machine learning (ML)-enabled image-phenotyping pipeline for the genetic studies of abiotic stress iron deficiency chlorosis (IDC) of soybean is reported. IDC classification and severity for an association panel of 461 diverse plant-introduction accessions was evaluated using an end-to-end phenotyping workflow. The workflow consisted of a multi-stage procedure including: (1) optimized protocols for consistent image capture across plant canopies, (2) canopy identification and registration from cluttered backgrounds, (3) extraction of domain expert informed features from the processed images to accurately represent IDC expression, and (4) supervised ML-based classifiers that linked the automatically extracted features with expert-rating equivalent IDC scores...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28266277/bergenin-from-peltophorum-dubium-isolation-characterization-and-antioxidant-activities-in-non-biological-systems-and-erythrocytes
#12
Guilherme A L de Oliveira, George L da Silva Oliveira, Lucas A D Nicolau, Ana C Mafud, Larissa F Batista, Yvonne P Mascarenhas, Luan K.M. de Sousa, Jorge M David, Larissa S Pinto, Clayton Q Alves, Jand V R Medeiros
BACKGROUND: Bergenin, a compound derived from gallic acid, is a secondary metabolite of the plant Peltophorum dubium (Spreng.) Taub. OBJECTIVE: In this study, we aimed to characterize the ability of bergenin to eliminate the radicals in non-biological systems. METHODS: We evaluated bergenin is ability to protect erythrocytes from oxidative damage in a biological system. We have elucidated bergenin structure using nuclear magnetic resonance, X-ray diffraction, Fourier transform infrared spectroscopy, and differential scanning calorimetry...
March 6, 2017: Medicinal Chemistry
https://www.readbyqxmd.com/read/28265181/comparison-of-the-fractional-exhaled-nitric-oxide-levels-in-adolescents-at-three-schools-located-three-different-distances-from-a-large-steel-mill
#13
Murat Acat, Yusuf Aydemir, Onur Yazıcı, Mahmut Turğut, Mustafa Çörtük, Murat Çakar, Zehra Yaşar, Sami Deniz, Erdoğan Çetinkaya
Objectives. Exposure to ambient metals and air pollutants in urban environments has been associated with impaired lung health and inflammation in the lungs. Fractional exhaled nitric oxide (FeNO) is a reliable marker of airway inflammation. In this study, we aimed to compare the FeNO levels of three schools that have different distances from iron and steel industry zone for assessing the effects of heavy metals and air pollution on their respiratory health. Methods. Pulmonary function test and FeNO measurements were evaluated in 387 adolescents in three schools which have different distance from plant...
2017: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/28260522/medicinal-and-healthical-applications-of-tinospora-cordifolia-guduchi-a-miraculous-herb-countering-various-diseases-disorders-and-potentials-as-an-immune-booster
#14
Kuldeep Dhama Dhama, Swati Sachan, Rekha Khandia, Ashok Munjal, Hafiz M N Iqbal, Shyma K Latheef, Kumaragurubaran Karthik, Hari Abdul Samad, Ruchi Tiwari, Maryam Dadar
BACKGROUND: Plants have been known as an integral part of traditional medicine because of their phytoconstituents with their miraculous substances. Tinospora cordifolia (Guduchi/Giloy) is one such plant having pharmacological functions and medicinal values due to its several constituents such as terpenes, glycosides, alkaloids, steroids and flavonoids. Thus, it has been rightly mentioned in old texts as "Amrita". OBJECTIVE: The objective of the present review is to extend the current knowledge, importance and beneficial pharmacological applications of Guduchi in humans for safeguarding various health issues...
February 28, 2017: Recent Patents on Endocrine, Metabolic & Immune Drug Discovery
https://www.readbyqxmd.com/read/28255820/a-powerful-tool-for-assessing-distribution-and-fate-of-potentially-toxic-metals-ptms-in-soils-integration-of-laser-ablation-spectrometry-la-icp-ms-on-thin-sections-with-soil-micromorphology-and-geochemistry
#15
Fabio Scarciglia, Donatella Barca
The dynamic behavior and inherent spatial heterogeneity, at different hierarchic levels, of the soil system often make the spatial distribution of potentially toxic metals (PTMs) quite complex and difficult to assess correctly. This work demonstrates that the application of laser ablation spectrometry (LA-ICP-MS) to soil thin sections constitutes an ancillary powerful tool to well-established analytical methods for tracing the behavior and fate of potential soil contaminants at the microsite level. It allowed to discriminate the contribution of PTMs in distinct soil sub-components, such as parent rock fragments, neoformed, clay-enriched or humified matrix, and specific pedogenetic features of illuvial origin (unstained or iron-stained clay coatings) even at very low contents...
March 2, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28253441/availability-production-and-consumption-of-crops-biofortified-by-plant-breeding-current-evidence-and-future-potential
#16
Amy Saltzman, Ekin Birol, Adewale Oparinde, Meike S Andersson, Dorene Asare-Marfo, Michael T Diressie, Carolina Gonzalez, Keith Lividini, Mourad Moursi, Manfred Zeller
Biofortification is the process of increasing the density of vitamins and minerals in a crop through plant breeding-using either conventional methods or genetic engineering-or through agronomic practices. Over the past 15 years, conventional breeding efforts have resulted in the development of varieties of several staple food crops with significant levels of the three micronutrients most limiting in diets: zinc, iron, and vitamin A. More than 15 million people in developing countries now grow and consume biofortified crops...
February 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28250659/antidiabetic-effects-of-aqueous-and-dichloromethane-methanol-stem-bark-extracts-of-pterocarpus-soyauxii-taub-papilionaceae-on-streptozotocin-induced-diabetic-rats
#17
Marie Claire Tchamadeu, Paul Désiré Djomeni Dzeufiet, Nelly Blaes, Jean-Pierre Girolami, Pierre Kamtchouing, Théophile Dimo
AIM OF THE STUDY: The aim is to evaluate the hypoglycemic and antidiabetic effects of aqueous and CH2Cl2/CH3OH stem bark extracts of Pterocarpus soyauxii Taub in normal and diabetic rats. MATERIALS AND METHODS: Streptozotocin (STZ)-induced diabetic and normal adult Wistar rats were orally administered with aqueous and CH2Cl2/CH3OH plant extracts of P. soyauxii at various doses (38-300 mg/kg) in a single administration. In addition, STZ-induced diabetic rats received prolonged daily administration for 14 days...
January 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28250070/mitochondrial-abc-transporter-atm3-is-essential-for-cytosolic-iron-sulfur-cluster-assembly
#18
Jia Zuo, Zhigeng Wu, Ying Li, Zedan Shen, Xiangyang Feng, Mingyong Zhang, Hong Ye
The mitochondrial ATP-binding cassette (ABC) transporter ATM3 has been studied in Arabidopsis. Its function, however, is poorly understood in other model plant species. This study reports that the ATM3 is required for cytosolic iron-sulfur cluster assembly and is essential for meristem maintenance in rice, Oryza sativa. The loss-of-function of OsATM3 is lethal in rice at the four-leaf stage. In the osatm3 T-DNA insertion mutant, the fourth leaf fails to develop and the lateral roots are short. Cytosolic iron-sulfur protein activities were significantly reduced in both osatm3 and RNA interference (RNAi) transgenic lines...
March 1, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28242530/unintentional-production-of-persistent-chlorinated-and-brominated-organic-pollutants-during-iron-ore-sintering-processes
#19
Sumei Li, Guorui Liu, Minghui Zheng, Wenbin Liu, Jinhui Li, Mei Wang, Changliang Li, Yuan Chen
Iron ore sintering (SNT) processes are major sources of unintentionally produced chlorinated persistent organic pollutants (POPs), including polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs), polychlorinated biphenyls (PCBs), and polychlorinated naphthalenes (PCNs). However, few studies of emissions of brominated POPs, such as polybrominated dibenzo-p-dioxins/dibenzofurans (PBDD/Fs) and polybrominated diphenyl ethers (PBDEs), during SNT have been performed. Stack gas and fly ash samples from six typical SNT plants in China were collected and analyzed to determine the concentrations and profiles of PCDD/Fs, PCBs, PCNs, PBDD/Fs, and PBDEs, as well as any correlations among these compounds...
February 20, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28241675/-association-between-single-nucleotide-polymorphismsin-human-heat-shock-protein-70-gene-and-susceptibility-to-noise-induced-hearing-loss
#20
Y H Li, G S Chen, J Jiao, W H Zhou, H Wu, G Z Gu, H L Zhang, Y X Zheng, S F Yu
Objective: To investigate the association between the single nucleotide polymorphisms (SNPs) at rs1043618, rs2075800, and rs2763979 in human heat shock protein 70 (HSP70) gene and susceptibility to noise-induced hearing loss (NIHL) . Methods: A case-control study was performed, and 5 934 workers exposed to noise in an iron and steel plant in Henan, China, who underwent physical examination from 2006 to 2015, were enrolled as study subjects. According to the criteria of binaural average high - frequency (3000, 4000, and 6000 Hz) hearing threshold≥40 dB (HL) and monauralaverage speech-frequency (500, 1000, 2000 Hz) hearing threshold≥26 dB (HL) on the basis of binauralhigh frequency loss measured by pure tone audiometry, as well as the exclusion of NIHL, a total of 286 workers were enrolled as hearing loss group; after the adjustment for sex, type of work, age (difference≤5 years) , and working years of noise exposure (difference ≤2 years) , 286 workers were enrolled as control group...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
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