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https://www.readbyqxmd.com/read/29775612/crystal-structure-of-wa352-provides-insight-into-cytoplasmic-male-sterility-in-rice
#1
Xiang Wang, Zeyuan Guan, Zhou Gong, Junjie Yan, Guangsheng Yang, Yao-Guang Liu, Ping Yin
Plant cytoplasmic male sterility (CMS) is an important phenomenon and is widely utilized in hybrid crop breeding. The Wild Abortive CMS (CMS-WA), a well-known CMS type, has been successfully applied in the commercial production of hybrid rice seeds for more than 40 years. The CMS-WA causal gene WA352 encodes a novel transmenbrane protein and the interacts with the mitochondrial copper chaperone COX11, triggering reactive oxygen species production and resulting in male sterility in CMS-WA lines. However, the structure of WA352 is currently unknown, and the structural mechanism whereby WA352 perturbs COX11 function to cause CMS remains largely unknown...
May 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29754057/copper-oxide-nanoparticles-and-arsenic-interact-to-alter-seedling-growth-of-rice-oryza-sativa-japonica
#2
Jing Liu, Birendra Dhungana, George P Cobb
Arsenic (As) causes phytotoxicity to rice plants, decreases rice production and causes serious human health concerns due to rice consumption. Additional stresses may be posed to rice plants due to the increasing release into the environment by the expanding production and application of copper oxide nanoparticles (nCuO). The influence of nCuO on As uptake in and effects on rice (Oryza sativa japonica) are explored here for the first time. An 18-d factorial experiment was conducted to determine main effects of nCuO (0, 0...
May 4, 2018: Chemosphere
https://www.readbyqxmd.com/read/29706977/joint-exploration-of-favorable-haplotypes-for-mineral-concentrations-in-milled-grains-of-rice-oryza-sativa-l
#3
Guo-Min Zhang, Tian-Qing Zheng, Zhuo Chen, Yong-Li Wang, Ying Wang, Yu-Min Shi, Chun-Chao Wang, Li-Yan Zhang, Jun-Tao Ma, Ling-Wei Deng, Wan Li, Tian-Tian Xu, Cheng-Zhi Liang, Jian-Long Xu, Zhi-Kang Li
Grain minerals in rice, especially those in milled grains, are important sources of micro-nutrition elements, such as iron (Fe), zinc (Zn), manganese (Mn), copper (Cu), and selenium (Se), and of toxic heavy metal elements, especially cadmium (Cd), for populations consuming a rice diet. To date, the genetic mechanism underlying grain mineral concentrations (GMCs) in milled grain remains largely unknown. In this report, we adopted a set of 698 germplasms consisting of two subsets [ indica / Xian (X-set) and japonica / Geng (G-set)], to detect quantitative trait loci (QTL) affecting GMC traits of Fe, Zn, Cd, Mn, Cu, and Se in milled grains...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29684657/engineering-low-cadmium-rice-through-stress-inducible-expression-of-oxs3-family-member-genes
#4
Changhu Wang, Weili Guo, Xingzhe Cai, Ruyu Li, David W Ow
Cadmium (Cd) as a carcinogen poses a great threat to food security and public health through plant-derived foods such as rice, the staple for nearly half of the world's population. We have previously reported that overexpression of truncated gene fragments derived from the rice genes OsO3L2 and OsO3L3 could reduce Cd accumulation in transgenic rice. However, we did not test the full length genes due to prior work in Arabidopsis where overexpression of these genes caused seedling lethality. Here, we report on limiting the overexpression of OsO3L2 and OsO3L3 through the use of the stress- inducible promoter RD29B...
April 20, 2018: New Biotechnology
https://www.readbyqxmd.com/read/29616070/the-rice-rolled-fine-striped-rfs-chd3-mi-2-chromatin-remodeling-factor-epigenetically-regulates-genes-involved-in-oxidative-stress-responses-during-leaf-development
#5
Sung-Hwan Cho, Chung-Hee Lee, Eunji Gi, Yehyun Yim, Hee-Jong Koh, Kiyoon Kang, Nam-Chon Paek
In rice ( Oryza sativa ), moderate leaf rolling increases photosynthetic competence and raises grain yield; therefore, this important agronomic trait has attracted much attention from plant biologists and breeders. However, the relevant molecular mechanism remains unclear. Here, we isolated and characterized Rolled Fine Striped ( RFS ), a key gene affecting rice leaf rolling, chloroplast development, and reactive oxygen species (ROS) scavenging. The rfs-1 gamma-ray allele and the rfs-2 T-DNA insertion allele of RFS failed to complement each other and their mutants had similar phenotypes, producing extremely incurved leaves due to defective development of vascular cells on the adaxial side...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29571461/heavy-metal-contamination-in-soil-food-crops-and-associated-health-risks-for-residents-of-ropar-wetland-punjab-india-and-its-environs
#6
Sakshi Sharma, Avinash Kaur Nagpal, Inderpreet Kaur
In the present study, an assessment of heavy metal content in soil and food crops (wheat, rice, maize grains and mustard seeds) and associated health risks was carried out for residents of Ropar wetland and its environs. All the soil samples had high cadmium and cobalt contents, whereas, all crop samples had high contents of cobalt and lead. Bioconcentration factor (BCF) analysis indicated that rice grains act as hyper-accumulators of chromium (BCF = 17.98) and copper (BCF = 10.91), whereas, maize grains act as hyper-accumulators of copper (BCF = 30...
July 30, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29564093/bioprospecting-of-powdered-pineapple-rind-as-an-organic-supplement-of-composted-sawdust-for-pleurotus-ostreatus-mushroom-cultivation
#7
Deborah L Narh Mensah, Peter Addo, Matilda Dzomeku, Mary Obodai
Pineapple rind is a by-product of the pineapple processing industry and contains nutrients and other compounds which must be utilized as a bioresource for socio-economic benefits while preventing the potential problems of improper agroindustrial biomass disposal methods. Pleurotus ostreatus is an edible oyster mushroom with medicinal properties and can be cultivated on various agroindustrial biomass, including sawdust containing supplements. Pineapple rind was powdered and used as a supplement of composted sawdust at 2%, 5%, 10%, 12%, 15%, and 20% (w/w) on dry weight basis...
March 2018: Food Science & Nutrition
https://www.readbyqxmd.com/read/29541879/genome-wide-analysis-of-autophagy-related-genes-args-in-grapevine-and-plant-tolerance-to-copper-stress
#8
Lingfei Shangguan, Xiang Fang, Lide Chen, Liwen Cui, Jinggui Fang
Grapevine autophagy-related genes (ARGs) include 35 members that have unique evolutionary backgrounds and expression patterns, with some of them responding to abiotic stresses, including copper stress. Autophagy is one of the most crucial self-regulating phenomena in livings organisms, including animals, plants, yeasts, etc. In the genomes of plants, like Arabidopsis, rice, tobacco, and barley, more than 30 autophagy-related genes (ARGs) have been found. These ARGs are involved in plant development, programed cell death, and the stress response process...
March 14, 2018: Planta
https://www.readbyqxmd.com/read/29502398/design-synthesis-and-evaluation-of-new-sulfone-derivatives-containing-a-1-3-4-oxadiazole-moiety-as-active-antibacterial-agents
#9
Pei Li, Deyu Hu, Dandan Xie, Jixiang Chen, Linhong Jin, Baoan Song
This study aimed to synthesize some new sulfone derivatives containing a 1,3,4-oxadiazole moiety and investigate their in vitro antibacterial activities against Xanthomonas oryzae pv. oryzae ( Xoo) and Xanthomonas axonopodis pv. citri ( Xac), the pathogens of rice bacterial leaf blight and citrus canker, respectively, by performing turbidimeter tests. Antibacterial bioassay results showed that compound 6d revealed excellent bioactivities against Xoo and Xac, with the 50% effective concentration (EC50 ) values of 0...
March 28, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29495631/epidemiological-study-on-metal-pollution-of-ningbo-in-china
#10
Zhou Li, Hong Su, Li Wang, Danbiao Hu, Lijun Zhang, Jian Fang, Micong Jin, Samuel Selorm Fiati Kenston, Xin Song, Hongbo Shi, Jinshun Zhao, Guochuan Mao
Background : In order to search for effective control and prevention measures, the status of metal pollution in Ningbo, China was investigated. Methods : Nine of the most common contaminating metals including lead (Pb), cadmium (Cd), copper (Cu), iron (Fe), manganese (Mn), chromium (Cr), nickel (Ni), zinc (Zn), and mercury (Hg) in samples of vegetables, rice, soil, irrigation water, and human hair were detected using inductively coupled plasma-mass spectrometry (ICP-MS). Three different districts including industrial, suburban and rural areas in Ningbo were studied through a stratified random sample method...
February 28, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29495445/fast-detection-of-copper-content-in-rice-by-laser-induced-breakdown-spectroscopy-with-uni-and-multivariate-analysis
#11
Fei Liu, Lanhan Ye, Jiyu Peng, Kunlin Song, Tingting Shen, Chu Zhang, Yong He
Fast detection of heavy metals is very important for ensuring the quality and safety of crops. Laser-induced breakdown spectroscopy (LIBS), coupled with uni- and multivariate analysis, was applied for quantitative analysis of copper in three kinds of rice (Jiangsu rice, regular rice, and Simiao rice). For univariate analysis, three pre-processing methods were applied to reduce fluctuations, including background normalization, the internal standard method, and the standard normal variate (SNV). Linear regression models showed a strong correlation between spectral intensity and Cu content, with an R 2 more than 0...
February 27, 2018: Sensors
https://www.readbyqxmd.com/read/29494129/copper-ion-assisted-photochemical-vapor-generation-of-chlorine-for-its-sensitive-determination-by-sector-field-inductively-coupled-plasma-mass-spectrometry
#12
Jing Hu, Ralph E Sturgeon, Kenny Nadeau, Xiandeng Hou, Chengbin Zheng, Lu Yang
A novel, reliable, and sensitive approach for the determination of chlorine by sector field inductively coupled plasma mass spectrometry (SF-ICPMS) using photochemical vapor generation for sample introduction is presented. Methyl chloride is generated from different chlorine species in a flow-through photochemical reactor using a 1% solution of acetic acid containing 7.5 μg g-1 of Cu2+ . The volatile product is directed by an argon carrier gas to a gas-liquid separator and introduced into the instrument. A sample flow rate at 1...
March 20, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29486439/exposure-risk-of-local-residents-to-copper-near-the-largest-flash-copper-smelter-in-china
#13
Jun Zhou, Jiani Liang, Yuanmei Hu, Wantong Zhang, Hailong Liu, Laiyong You, Wenhui Zhang, Min Gao, Jing Zhou
Copper (Cu) smelting released large amounts of Cu and contaminated the environment. However, few studies have investigated the Cu exposure risks for people located near Cu smelters. In this study, atmospheric bulk deposition, food from local families, drinking water and biological samples (hair and urine) were collected in three villages near the largest flash Cu smelter in China. The objective of the current study was to investigate how non-ferrous metals smelting affect the human health. Total atmospheric Cu depositions (56-767μgm-2 yr-1 ) were one or two orders of magnitude greater than that of unpolluted rural areas...
July 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29396824/distribution-and-mobility-of-exogenous-copper-as-influenced-by-aging-and-components-interactions-in-three-chinese-soils
#14
Hanzhi Shi, Qi Li, Wenli Chen, Peng Cai, Qiaoyun Huang
Copper contamination of soils is a global environmental problem. Soil components (organic matter, clay minerals, and microorganisms) and retention time can govern the adsorption, fixation, and distribution of copper. This study evaluated the interaction effects of soil components and aging on the distribution of exogenous copper. Three typical Chinese soils (Ultisol, Alfisol, and Histosol) were collected from Hunan, Henan, and Heilongjiang Provinces. Soils were incubated with rice straw (RS) and engineered bacteria (Pseudomonas putida X4/pIME) in the presence of exogenous copper for 12 months...
April 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29387362/assessment-of-heavy-metals-and-microbial-contamination-of-gari-from-liberia
#15
Wasiu Awoyale, Robert Asiedu, William K C Kawalawu, Busie Maziya-Dixon, Adebayo Abass, Michael Edet, Medinat O Adetunji
Cassava is a staple mostly eaten in the form of gari , after rice in Liberia. The local method of gari processing often leads to product contamination, thus, a study was done to assess the heavy metals and microbial contamination of gari in eight counties of the country. A total of sixty-one gari samples were collected and packaged in an airtight polyethylene bag for analyses, using standard methods. Results depict that the mean of the heavy metals in the gari samples is iron (Fe) 43.87 ppm, copper (Cu) 0...
January 2018: Food Science & Nutrition
https://www.readbyqxmd.com/read/29330900/overexpression-of-microrna408-enhances-photosynthesis-growth-and-seed-yield-in-diverse-plants
#16
Jiawei Pan, Dahui Huang, Zhonglong Guo, Zheng Kuang, He Zhang, Xinyu Xie, Zengfeng Ma, Shaopei Gao, Manuel T Lerdau, Chengcai Chu, Lei Li
The ability of a plant to produce grain, fruit, or forage depends ultimately on photosynthesis. There have been few attempts, however, to study microRNAs, which are a class of endogenous small RNAs post-transcriptionally programming gene expression, in relation to photosynthetic traits. We focused on miR408, one of the most conserved plant miRNAs, and overexpressed it in parallel in Arabidopsis, tobacco, and rice. The transgenic plants all exhibited increased copper content in the chloroplast, elevated abundance of plastocyanin, and an induction of photosynthetic genes...
April 2018: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/29317278/optimizing-self-wicking-nanowire-grids
#17
Hui Wei, Venkata P Dandey, Zhening Zhang, Ashleigh Raczkowski, Willam J Rice, Bridget Carragher, Clinton S Potter
We have developed a self-blotting TEM grid for use with a novel instrument for vitrifying samples for cryo-electron microscopy (cryoEM). Nanowires are grown on the copper surface of the grid using a simple chemical reaction and the opposite smooth side is used to adhere to a holey sample substrate support, for example carbon or gold. When small volumes of sample are applied to the nanowire grids the wires effectively act as blotting paper to rapidly wick away the liquid, leaving behind a thin film. In this technical note, we present a detailed description of how we make these grids using a variety of substrates fenestrated with either lacey or regularly spaced holes...
May 2018: Journal of Structural Biology
https://www.readbyqxmd.com/read/29302908/heavy-metals-in-handloom-dyeing-effluents-and-their-biosorption-by-agricultural-byproducts
#18
Kamrun Nahar, Md Abul Khair Chowdhury, Md Akhter Hossain Chowdhury, Afzal Rahman, K M Mohiuddin
The Madhabdi municipality in the Narsingdi district of Bangladesh is a well-known area for textile, handloom weaving, and dyeing industries. These textile industries produce a considerable amount of effluents, sewage sludge, and solid waste materials every day that they directly discharge into surrounding water bodies and agricultural fields. This disposal poses a serious threat to the overall epidemic and socio-economic pattern of the locality. This research entailed the collection of 34 handloom-dyeing effluent samples from different handloom-dyeing industries of Madhabdi, which were then analyzed to determine the contents of the heavy metals iron (Fe), zinc (Zn), copper (Cu), chromium (Cr), manganese (Mn), lead (Pb), and cadmium (Cd)...
March 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29210524/tsc1-enables-plastid-development-under-dark-conditions-contributing-to-rice-adaptation-to-transplantation-shock
#19
Xiaoliang Shi, Sunlu Chen, Yu Peng, Yufeng Wang, Jiugeng Chen, Zhanghua Hu, Baohe Wang, Aihong Li, Daiyin Chao, Yuhong Li, Sheng Teng
Since its domestication from wild rice thousands of years ago, rice has been cultivated largely through transplantation. During transplantation from the nursery to the paddy field, rice seedlings experience transplantation shock which affects their physiology and production. However, the mechanisms underlying transplantation shock and rice adaptation to this shock are largely unknown. Here, we isolated a transplant-sensitive chloroplast-deficient (tsc1) rice mutant that produces albino leaves after transplantation...
February 2018: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/29194641/chemometric-analysis-of-minerals-in-gluten-free-products
#20
Anna Gliszczyńska-Świgło, Inga Klimczak, Iga Rybicka
BACKGROUND: Numerous studies indicate mineral deficiencies in people on a gluten-free (GF) diet. These deficiencies may indicate that GF products are a less valuable source of minerals than gluten-containing products. In the study, the nutritional quality of 50 GF products is discussed taking into account the nutritional requirements for minerals expressed as percentage of recommended daily allowance (%RDA) or percentage of adequate intake (%AI) for a model celiac patient. Elements analyzed were calcium, potassium, magnesium, sodium, copper, iron, manganese, and zinc...
November 30, 2017: Journal of the Science of Food and Agriculture
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