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https://www.readbyqxmd.com/read/29133823/identification-of-mirna-mediated-drought-responsive-multi-tiered-regulatory-network-in-drought-tolerant-rice-nagina-22
#1
Sonia Balyan, Mukesh Kumar, Roseeta Devi Mutum, Utkarsh Raghuvanshi, Priyanka Agarwal, Saloni Mathur, Saurabh Raghuvanshi
Comparative characterization of microRNA-mediated stress regulatory networks in contrasting rice cultivars is critical to decipher plant stress response. Consequently, a multi-level comparative analysis, using sRNA sequencing, degradome analysis, enzymatic and metabolite assays and metal ion analysis, in drought tolerant and sensitive rice cultivars was conducted. The study identified a group of miRNAs "Cultivar-specific drought responsive" (CSDR)-miRNAs (osa-miR159f, osa-miR1871, osa-miR398b, osa-miR408-3p, osa-miR2878-5p, osa-miR528-5p and osa-miR397a) that were up-regulated in the flag-leaves of tolerant cultivar, Nagina 22 (N22) and Vandana, but down-regulated in the sensitive cultivar, Pusa Basmati 1 (PB1) and IR64, during drought...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29101883/investigating-binding-characteristics-of-cadmium-and-copper-to-dom-derived-from-compost-and-rice-straw-using-eem-parafac-combined-with-two-dimensional-ftir-correlation-analyses
#2
Mei Huang, Zhongwu Li, Bin Huang, Ninglin Luo, Qiu Zhang, Xiuqing Zhai, Guangming Zeng
The binding of Cd and Cu to dissolved organic matter (DOM) derived from compost (CP) and rice straw (ST) was studied through an approach combining parallel factor (PARAFAC) analysis and two-dimensional correlation spectroscopy (2DCOS). Both humic-like and protein-like substances have been observed in CP and ST. Comparing with the Cu, Cd exhibited a lower affinity to DOM, and the quenching curve of Cd failed to be fitted by the Ryan and Weber Model, indicating that the environmental risk caused by applying CP or ST to Cd-polluted soil should be considered...
October 28, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29031483/duox-expression-in-human-keratinocytes-and-bronchial-epithelial-cells-influence-of-vanadate
#3
Thomas Hill, Robert H Rice
Dual oxygenases (DUOX) 1 and 2, expressed in many animal tissues, participate in host defense at mucosal surfaces and may have important signaling roles through generation of reactive oxygen. Present work addresses their expression in cultured human epidermal keratinocytes and effects of cytokines and metal/metalloid compounds. Both DUOX1 and 2 were expressed at much higher levels after confluence than in the preconfluent state. Maximal DUOX1 mRNA levels were 50 fold those of DUOX2. DUOX1 and 2 were induced ≈3 fold by interleukin 4, but only DUOX1 was induced by interferon gamma (IFNγ)...
February 2018: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29024290/novel-bisthioether-derivatives-containing-a-1-3-4-oxadiazole-moiety-design-synthesis-antibacterial-and-nematocidal-activities
#4
Pei Li, Pingyi Tian, Yongzhong Chen, Xianpeng Song, Wei Xue, Linhong Jin, Deyu Hu, Song Yang, Baoan Song
BACKGROUND: Literature revealed that bisthioether and 1,3,4-oxadiazole derivatives exhibited a wide variety of biological activities. In this study, a series of novel bisthioether derivatives containing a 1,3,4-oxadiazole moiety were synthesized and their antibacterial and nematocidal activities were investigated. RESULTS: Among the title compounds evaluated, compound 4f demonstrated the best antibacterial activities against rice bacterial leaf blight, rice bacterial leaf streak and citrus canker caused by Xanthomonas oryzae pv...
October 12, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28979771/biomass-and-elemental-concentrations-of-22-rice-cultivars-grown-under-alternate-wetting-and-drying-conditions-at-three-field-sites-in-bangladesh
#5
Gareth J Norton, Anthony J Travis, John M C Danku, David E Salt, Mahmud Hossain, Md Rafiqul Islam, Adam H Price
As the global population grows, demand on food production will also rise. For rice, one limiting factor effecting production could be availability of fresh water, hence adoption of techniques that decrease water usage while maintaining or increasing crop yield are needed. Alternative wetting and drying (AWD) is one of these techniques. AWD is a method by which the level of water within a rice field cycles between being flooded and nonflooded during the growth period of the rice crop. The degree to which AWD affects cultivars differently has not been adequately addressed to date...
August 2017: Food and energy security
https://www.readbyqxmd.com/read/28974021/h%C3%A2-o%C3%A2-is-involved-in-the-metallothionein-mediated-rice-tolerance-to-copper-and-cadmium-toxicity
#6
Hongxiao Zhang, Shufang Lv, Huawei Xu, Dianyun Hou, Youjun Li, Fayuan Wang
Cadmium (Cd) and excess copper (Cu) are toxic to plants, causing a wide range of deleterious effects including the formation of reactive oxygen species. Metallothioneins (MTs) may protect plant cells from heavy metal toxicity by chelating heavy metals via cysteine thiol groups. They may also function as antioxidants. The study investigated the relationship of H₂O₂ production and ricMT expression in rice radicles and rice suspension cells under Cu or Cd stress. The results showed that H₂O₂ production in the rice radicles increased before Cu-induced ricMT expression, and after Cd-induced ricMT expression...
October 1, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28970841/effects-of-surface-charge-and-functional-groups-on-the-adsorption-and-binding-forms-of-cu-and-cd-on-roots-of-indica-and-japonica-rice-cultivars
#7
Zhao-Dong Liu, Qin Zhou, Zhi-Neng Hong, Ren-Kou Xu
This work was designed to understand the mechanisms of adsorption of copper (Cu) and cadmium (Cd) on roots of indica and japonica varieties of rice. Six varieties each of indica and japonica rice were grown in hydroponics and the chemical properties of the root surface were analyzed, including surface charges and functional groups (-COO- groups) as measured by the streaming potential and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR). Binding forms of heavy metals adsorbed on rice roots were identified using sequential extraction methods...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28964989/heavy-metals-in-food-crops-soil-and-water-in-the-lihe-river-watershed-of-the-taihu-region-and-their-potential-health-risks-when-ingested
#8
Lian Chen, Shenglu Zhou, Yaxing Shi, Chunhui Wang, Baojie Li, Yan Li, Shaohua Wu
Environmental pollution by heavy metals resulting from rapid economic development is a major concern. Soil, water, wheat, and rice samples were collected from the Lihe River Watershed in the Taihu Region (east China). In this study area, many types of industrial plants, including ceramics factories, plants working with refractory materials, and chemical plants are densely distributed and cause serious heavy metal pollution. In addition, well-developed transportation and agricultural activities are also important sources of heavy metals...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/28904074/mir408-regulates-grain-yield-and-photosynthesis-via-a-phytocyanin-protein
#9
Jin-Ping Zhang, Yang Yu, Yan-Zhao Feng, Yan-Fei Zhou, Fan Zhang, Yu-Wei Yang, Meng-Qi Lei, Yu-Chan Zhang, Yue-Qin Chen
Increasing grain yield is the most important object of crop breeding. Here, we report that the elevated expression of a conserved microRNA, OsmiR408, could positively regulate grain yield in rice (Oryza sativa) by increasing panicle branches and grain number. We further showed that OsmiR408 regulates grain yield by down-regulating its downstream target, OsUCL8, which is an uclacyanin (UCL) gene of the phytocyanin family. The knock down or knock out of OsUCL8 also increases grain yield, while the overexpression of OsUCL8 results in an opposite phenotype...
November 2017: Plant Physiology
https://www.readbyqxmd.com/read/28898073/immobilizing-arsenic-and-copper-ions-in-manure-using-a-nanocomposite
#10
Dongfang Wang, Guilong Zhang, Linglin Zhou, Dongqing Cai, Zhengyan Wu
Livestock manure (Man) commonly contains a certain quantity of heavy metal ions, such as arsenic (As) and copper (Cu) ions, resulting in a high risk on soil contamination. To solve this problem, heavy metal of manure was immobilized into sodium carbonate/biosilica/attapulgite composite (Na2CO3/BioSi/Attp), which was developed using a nanocomposite consisting of anhydrous sodium carbonate (Na2CO3), straw ash-based biochar and biosilica (BioSi), and attapulgite (Attp). When Na2CO3/BioSi/Attp was mixed with Man/AsCu, the obtained nanocomposite (Na2CO3/BioSi/Attp/Man/AsCu) with a porous nano-network structure could effectively control the release of As and Cu ions from manure through adsorption and chemical reaction...
October 4, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28868059/integrating-early-transcriptomic-responses-to-rhizotoxins-in-rice-oryza-sativa-l-reveals-key-regulators-and-a-potential-early-biomarker-of-cadmium-toxicity
#11
Li-Yao Huang, Chung-Wen Lin, Ruey-Hua Lee, Chih-Yun Chiang, Yung-Chuan Wang, Ching-Han Chang, Hao-Jen Huang
As sessile organisms, plants were constantly challenged with biotic and abiotic stresses. Transcriptional activation of stress-responsive genes is a crucial part of the plant adaptation to environmental changes. Here, early response of rice root to eight rhizotoxic stressors: arsenate, copper, cadmium, mercury, chromate, vanadate, ferulic acid and juglone, was analyzed using published microarray data. There were 539 general stress response (GSR) genes up-regulated under all eight treatments, including genes related to carbohydrate metabolism, phytohormone balance, and cell wall structure...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28796373/environmental-behavior-potential-phytotoxicity-and-accumulation-of-copper-oxide-nanoparticles-and-arsenic-in-rice-plants
#12
REVIEW
Jing Liu, Birendra Dhungana, George P Cobb
Copper oxide nanoparticles (CuO NPs) are widely used in many industries. The increasing release of CuO NPs from both intentional and unintentional sources into the environment may pose risks to rice plants, thereby reducing the quality or quantity of this staple grain in the human diet. Not only has arsenic (As) contamination decreased rice yield, but As accumulation in rice has also been a great human health concern for a few decades. New technologies have succeeded in removing As from water by nanomaterials...
August 10, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28760553/genome-wide-identification-of-sweet-orange-citrus-sinensis-metal-tolerance-proteins-and-analysis-of-their-expression-patterns-under-zinc-manganese-copper-and-cadmium-toxicity
#13
Xing-Zheng Fu, Ya-Hua Tong, Xue Zhou, Li-Li Ling, Chang-Pin Chun, Li Cao, Ming Zeng, Liang-Zhi Peng
Plant metal tolerance proteins (MTPs) play important roles in heavy metal homeostasis; however, related information in citrus plants is limited. Citrus genome sequencing and assembly have enabled us to perform a systematic analysis of the MTP gene family. We identified 12 MTP genes in sweet orange, which we have named as CitMTP1 and CitMTP3 to CitMTP12 based on their sequence similarity to Arabidopsis thaliana MTPs. The CitMTPs were predicted to encode proteins of 864 to 2556 amino acids in length that included 4 to 6 putative transmembrane domains (TMDs)...
September 20, 2017: Gene
https://www.readbyqxmd.com/read/28678533/a-method-for-screening-copper-tolerant-rice-oryza-sativa-l-cultivars-based-on-hydroponic-experiments-and-cluster-analysis
#14
Sen Lin, Tingting Yang, Shaowei Zhu, Jifeng Wang, Wuzhong Ni
A method for screening copper (Cu) tolerant rice cultivars was studied by combining hydroponic experiments and cluster analysis, and the classification of cultivars in Cu stress tolerance was done. In the first hydroponic experiment, seedlings of Jiahe991 and Xiushui114 were planted in nutrient solution with different Cu(2+) concentrations from 10 to 1800 μg/L. Results indicated that the toxic threshold of Cu concentration in solution ranged from 900 to 1200 μg/L, since SPAD values of leaves and seedlings biomass of the treatments with ≥ 900 and/or 1200 µg/L were significantly lower than the control...
July 5, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28631167/copper-and-ectopic-expression-of-the-arabidopsis-transport-protein-copt1-alter-iron-homeostasis-in-rice-oryza-sativa-l
#15
Amparo Andrés-Bordería, Fernando Andrés, Antoni Garcia-Molina, Ana Perea-García, Concha Domingo, Sergi Puig, Lola Peñarrubia
Copper deficiency and excess differentially affect iron homeostasis in rice and overexpression of the Arabidopsis high-affinity copper transporter COPT1 slightly increases endogenous iron concentration in rice grains. Higher plants have developed sophisticated mechanisms to efficiently acquire and use micronutrients such as copper and iron. However, the molecular mechanisms underlying the interaction between both metals remain poorly understood. In the present work, we study the effects produced on iron homeostasis by a wide range of copper concentrations in the growth media and by altered copper transport in Oryza sativa plants...
September 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28580502/in-vitro-bioavailability-of-calcium-magnesium-iron-zinc-and-copper-from-gluten-free-breads-supplemented-with-natural-additives
#16
J Regula, A Cerba, J Suliburska, A A Tinkov
The aim of this study was to measure the content of calcium, magnesium, iron, zinc, and copper and determine the bioavailability of these ingredients in gluten-free breads fortified with milk and selected seeds. Due to the increasing prevalence of celiac disease and mineral deficiencies, it has become necessary to produce food with higher nutritional values which maintains the appropriate product characteristics. This study was designed for gluten-free breads fortified with milk and seeds such as flax, poppy, sunflower seeds, pumpkin seeds or nuts, and flour with amaranth...
June 3, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28551270/inorganic-arsenic-removal-in-rice-bran-by-percolating-cooking-water
#17
Antonio J Signes-Pastor, Manus Carey, Andrew A Meharg
Rice bran, a by-product of milling rice, is highly nutritious but contains very high levels of the non-threshold carcinogen inorganic arsenic (i-As), at concentrations around 1mg/kg. This i-As content needs to be reduced to make rice bran a useful food ingredient. Evaluated here is a novel approach to minimizing rice bran i-As content which is also suitable for its stabilization namely, cooking bran in percolating arsenic-free boiling water. Up to 96% of i-As removal was observed for a range of rice bran products, with i-As removal related to the volume of cooking water used...
November 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28550677/mineral-profile-of-children-s-fast-food-menu-samples
#18
Maria Luisa Cervera, Miguel de la Guardia, Manuela Ruiz-de-Cenzano, Arancha Rochina-Marco, Óscar López-Salazar
Children's fast food menus, including hamburgers served with french fries, dessert, and a soft drink, were analyzed to obtain the mineral profile of trace elements. The developed analytical methodology involved sample digestion under pressure inside a microwave oven with a mixture of HNO₃ and H₂O₂ and inductively coupled plasma-optical emission spectrometry. The method was validated by carrying out the analysis of certified reference materials (NIST 1570a spinach leaves, NCS ZC73016 chicken, and NIST 1568a rice flour) and using recovery experiments...
May 26, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28543034/changes-in-mineral-elements-and-starch-quality-of-grains-during-the-improvement-of-japonica-rice-cultivars
#19
Hao Zhang, Chao Yu, Danping Hou, Hailang Liu, Huiting Zhang, Rongrong Tao, Han Cai, Junfei Gu, Lijun Liu, Zujian Zhang, Zhiqin Wang, Jianchang Yang
BACKGROUND: The improvement of rice cultivars plays an important role in yield increase. However, little is known about the changes in starch quality and mineral elements during the improvement of rice cultivars. This study was conducted to investigate the changes in starch quality and mineral elements in japonica rice cultivars. RESULTS: Twelve typical rice cultivars, applied in the production in Jiangsu province during the last 60 years, were grown in the paddy fields...
May 25, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28484981/human-health-risk-assessment-due-to-dietary-intake-of-heavy-metals-through-rice-in-the-mining-areas-of-singhbhum-copper-belt-india
#20
Soma Giri, Abhay Kumar Singh
The study was intended to investigate heavy metal contamination levels in the rice grown in the vicinity of the mining areas of Singhbhum Copper Belt, India. The concentrations of the metals were below the Indian maximum allowable concentrations for food except for Pb, Ni, and Zn at some locations. Principal component analysis extracted three factors explaining 79.1% of the data variability. The extracted factors suggested that the sources of metals in the rice can be attributed to soil, irrigating water, and atmospheric dust deposition...
June 2017: Environmental Science and Pollution Research International
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