1,162,638 results match your criteria Plant Poisoning Glycosides – Coumarin


Moving beyond the distinction between the bright and dark sides of termites to achieve sustainable development goals.

Curr Opin Insect Sci 2020 Jun 4;40:71-76. Epub 2020 Jun 4.

Sorbonne Université, UPEC, CNRS, IRD, INRA, Institut d'écologie et des sciences de l'environnement, IESS, FEST, F-75005 Paris, France; Soils and Fertilizers Research Institute, SFRI, Dong Nac, Tu Liem, Hanoi, Viet Nam.

Termites are amongst the main macroinvertebrate decomposers in tropical ecosystems and they exert additional impacts through the creation of biostructures (mounds, galleries, sheetings, etc.) with different soil physical and chemical properties, thereby impacting positively on numerous ecosystem services for humankind. Unfortunately, this positive or 'bright' role of termites is often overshadowed by their 'dark' side, that is, their status as pests threatening agriculture and constructions. Read More

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http://dx.doi.org/10.1016/j.cois.2020.05.010DOI Listing

Reverse-phase/phenylboronic-acid-type magnetic microspheres to eliminate the matrix effects in amatoxin and phallotoxin determination via ultrahigh-performance liquid chromatography-tandem mass spectrometry.

Food Chem 2020 Jun 23;332:127394. Epub 2020 Jun 23.

Key Laboratory of Storage and Processing of Plant Agro-Products, College of Biological Science and Engineering, North Minzu University, Yinchuan 750021, China.

In this study, we present the preparation of a new reverse-phase/phenylboronic-acid (RP/PBA)-type mixed-mode magnetic solid-phase extraction (MSPE) adsorbent for use in the cleanup of amatoxin- and phallotoxin-containing samples intended for ultrahigh-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) analysis. Further, the RP/PBA magnetic microspheres have phenyl and phenylboronic acid groups on their surfaces that selectively adsorb amatoxins and phallotoxins through hydrophobic, π-π, and boronate affinity, significantly reducing matrix effects in UPLC-MS/MS analysis. After systematic optimization, all the standard calibration curves expressed satisfactory linearity (r > 0. Read More

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http://dx.doi.org/10.1016/j.foodchem.2020.127394DOI Listing

Rice nitrogen use efficiency does not link to ammonia volatilization in paddy fields.

Sci Total Environ 2020 Jun 22;741:140433. Epub 2020 Jun 22.

National Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China. Electronic address:

Ammonia (NH) volatilization is a major pathway of nitrogen (N) losses from paddy fields, and could be potentially mitigated by cultivation of high nitrogen use efficiency (high-NUE) rice cultivars. However, the relationship between NUE and NH volatilization has not been validated under field conditions. A field experiment was conducted to evaluate the impact of four rice cultivars with different NUE [Wuyunjing 23 (W23), Zhendao 11 (Z11), Wuyujing 3 (W3), and Aoyusi 386 (A386)] on NH volatilization, as well as the related mechanisms. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.140433DOI Listing

Blurred lines: integrating emerging technologies to advance plant biosecurity.

Curr Opin Plant Biol 2020 Jun 28;56:127-134. Epub 2020 Jun 28.

Research School of Biology, The Australian National University, Canberra, ACT 2601, Australia. Electronic address:

Plant diseases threaten global food security and biodiversity. Rapid dispersal of pathogens particularly via human means has accelerated in recent years. Timely detection of plant pathogens is essential to limit their spread. Read More

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http://dx.doi.org/10.1016/j.pbi.2020.04.011DOI Listing

The role of organic matrices in the fate of hydrophobic pesticides: An outdoor stream mesocosm study.

Chemosphere 2020 Jun 20;259:127459. Epub 2020 Jun 20.

iES Landau, Institute for Environmental Sciences, University of Koblenz-Landau, Fortstrasse 7, 76829, Landau, Germany. Electronic address:

To assess potential aquatic pesticide risks, environmental monitoring strategies often focus on water and sediment. However, knowledge gaps with regard to the pollution status of organic matrices important for the structure and functioning of aquatic ecosystems do exist. The present study assessed the dissipation of the triazole fungicide tebuconazole (TEB; K = 5. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2020.127459DOI Listing

A WRKY transcription factor, TaWRKY40-D, promotes leaf senescence associated with jasmonic acid and abscisic acid pathways in wheat.

Plant Biol (Stuttg) 2020 Jul 1. Epub 2020 Jul 1.

Ministry of Education Key Laboratory of Molecular and Cell Biology, Hebei Collaboration Innovation Center for Cell Signaling, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China.

Leaf senescence is a complex and precise regulatory process that correlated with numerous internal and environmental factors. Leaf senescence is tightly related to the redistribution of nutrients, which significantly affects productivity and quality, especially in crops. Evidence shows that the mediation of transcriptional regulation by WRKY transcription factors is vital for the fine-tuning of leaf senescence. Read More

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http://dx.doi.org/10.1111/plb.13155DOI Listing

The effect of maize-alfalfa intercropping on the physiological characteristics, Nitrogen uptake and yield of Maize.

Plant Biol (Stuttg) 2020 Jul 1. Epub 2020 Jul 1.

Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases in Jilin Province, Jilin Agricultural University, Changchun, 130118, China.

Northeastern China is a combined ecozone of agronomy and animal husbandry, which plays an important role in China's agricultural progress. However, the intensive long-term sole cropping system and increased use of chemical fertilizer causes severe problems to sustainable agricultural development. Therefore, to improve agricultural sustainability, ensure food security and high quality crops yield, the farming system needs to be modified in the region. Read More

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http://dx.doi.org/10.1111/plb.13157DOI Listing

Pseudophoenix ekmanii (Arecaceae) seeds at suboptimal temperature show reduced imbibition rates and enhanced expression of genes related to germination inhibition.

Plant Biol (Stuttg) 2020 Jul 1. Epub 2020 Jul 1.

Department of Comparative Plant and Fungal Biology, Royal Botanic Gardens, Kew, Wakehurst Place, Ardingly, West Sussex, RH17 6TN, United Kingdom.

Rationale: Pseudophoenix ekmanii is a critically endangered palm species that can be found in the Southeast of the Dominican Republic. The temperatures to which P. ekmanii seeds are exposed upon dispersal range from 32 to 23 °C (max and min) and can reach a low of approximately 20 °C in January. Read More

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http://dx.doi.org/10.1111/plb.13156DOI Listing

Are unusual ultrastructural features occurring in the pollen endomembrane system of Cyperaceae and other angiosperms?

Cell Biol Int 2020 Jul 1. Epub 2020 Jul 1.

Laboratory of Plant Anatomy LAVeg, Institute of Biosciences, Department of Botany, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Porto Alegre, RS, Brazil.

Cyperaceae representatives present peculiar microsporogenesis and microgametogenesis, which raises the question of how regular the sedge pollen is. In order to answer this question, pre-anthesis pollen grain of Cyperaceae individuals were analyzed under different tools such as light and transmission electron microscopy, which included cytochemistry and immunogold procedures. The results showed that maturing pollen in Cyperaceae presents some unusual endomembrane behaviors. Read More

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http://dx.doi.org/10.1002/cbin.11415DOI Listing

RNA aptamer capture of macromolecular complexes for mass spectrometry analysis.

Nucleic Acids Res 2020 Jul 1. Epub 2020 Jul 1.

Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA.

Specific genomic functions are dictated by macromolecular complexes (MCs) containing multiple proteins. Affinity purification of these complexes, often using antibodies, followed by mass spectrometry (MS) has revolutionized our ability to identify the composition of MCs. However, conventional immunoprecipitations suffer from contaminating antibody/serum-derived peptides that limit the sensitivity of detection for low-abundant interacting partners using MS. Read More

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http://dx.doi.org/10.1093/nar/gkaa542DOI Listing

Genetic evidence that Chinese chestnut cultivars in Japan are derived from two divergent genetic structures that originated in China.

PLoS One 2020 1;15(7):e0235354. Epub 2020 Jul 1.

College of Agriculture, Ibaraki University, Ami-machi, Ibaraki, Japan.

The Chinese chestnut (Castanea mollissima Bl.) was introduced into Japan about 100 years ago. Since then, a number of Chinese chestnut cultivars and Japanese-Chinese hybrid cultivars have been selected by farmers and plant breeders, but little information has been available about their origins and genetic relationships. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0235354PLOS

Genome-wide mapping using new AFLP markers to explore intraspecific variation among pathogenic Sporothrix species.

PLoS Negl Trop Dis 2020 Jul 1;14(7):e0008330. Epub 2020 Jul 1.

Laboratory of Emerging Fungal Pathogens, Department of Microbiology, Immunology, and Parasitology, Discipline of Cellular Biology, Federal University of São Paulo (UNIFESP), São Paulo, Brazil.

Sporotrichosis is a chronic subcutaneous mycosis caused by Sporothrix species, of which the main aetiological agents are S. brasiliensis, S. schenckii, and S. Read More

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http://dx.doi.org/10.1371/journal.pntd.0008330DOI Listing

Brassinosteroids regulate root meristem development by mediating BIN2-UPB1 module in Arabidopsis.

PLoS Genet 2020 Jul 1;16(7):e1008883. Epub 2020 Jul 1.

Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, State Key Laboratory of Hydraulics and Mountain River Engineering, College of Life Sciences, Sichuan University, Chengdu, Sichuan, P. R. China.

Plant steroid hormones brassinosteroids (BRs) regulate plant growth and development at many levels. While negative regulatory factors that inhibit development and are counteracted by BRs exist in the root meristem, these factors have not been characterized. The functions of UPB1 transcription factor in BR-regulated root growth have not been established, although its role in regulating root are well documented. Read More

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http://dx.doi.org/10.1371/journal.pgen.1008883DOI Listing

Radiation-hardened configuration context realization for field programmable gate arrays.

Appl Opt 2020 Jul;59(19):5680-5686

In space environments and at nuclear power plants, data can be destroyed by radiation, even data recorded on flash memories. To realize a radiation-hardened configuration context for field programmable gate arrays (FPGAs) under such radiation environments, this paper presents a proposal of a method to increase the radiation tolerance of configuration contexts used for FPGAs by introducing a holographic memory technology and a new FPGA architecture. When reading a configuration context from holographic memory, the context robustness depends on the number of bright bits on the configuration context. Read More

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http://dx.doi.org/10.1364/AO.396525DOI Listing

Systems Approach to Evaluate Tarnished Plant Bug (Hemiptera: Miridae) Management Practices in Virginia and North Carolina Cotton.

J Econ Entomol 2020 Jul 1. Epub 2020 Jul 1.

Tidewater Agricultural Research and Extension Center, Virginia Tech University, Suffolk, VA.

Economically damaging infestations of Lygus lineolaris (Palisot de Beauvois), tarnished plant bug, were sporadic in Virginia and North Carolina cotton before 2010. Given the sudden rise of L. lineolaris as an economic pest in these states, regionally specific management practices (i. Read More

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http://dx.doi.org/10.1093/jee/toaa142DOI Listing

Expansion of shrubs could result in local loss of soil bacterial richness in Western Greenland.

FEMS Microbiol Ecol 2020 Jul 1. Epub 2020 Jul 1.

Biodiversity Dynamics Research Group, Naturalis Biodiversity Center, Leiden, The Netherlands.

Climate warming in Greenland is facilitating the expansion of shrubs across wide areas of tundra. Given the close association between plants and soil microorganisms and the important role of soil bacteria in ecosystem functioning, it is of utmost importance to characterize microbial communities of arctic soil habitats and assess the influence of plant edaphic factors on their composition. We used 16S rRNA gene amplicons to explore the bacterial assemblages of three different soil habitats representative of a plant coverage gradient: bare ground, biological soil crusts dominated by mosses and lichens, and vascular vegetation dominated by shrubs. Read More

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http://dx.doi.org/10.1093/femsec/fiaa089DOI Listing

CDKD-dependent activation of CDKA;1 controls microtubule dynamics and cytokinesis during meiosis.

J Cell Biol 2020 Aug;219(8)

University of Hamburg, Department of Developmental Biology, Hamburg, Germany.

Precise control of cytoskeleton dynamics and its tight coordination with chromosomal events are key to cell division. This is exemplified by formation of the spindle and execution of cytokinesis after nuclear division. Here, we reveal that the central cell cycle regulator CYCLIN DEPENDENT KINASE A;1 (CDKA;1), the Arabidopsis homologue of Cdk1 and Cdk2, partially in conjunction with CYCLIN B3;1 (CYCB3;1), is a key regulator of the microtubule cytoskeleton in meiosis. Read More

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http://dx.doi.org/10.1083/jcb.201907016DOI Listing

De novo sequencing of Bletilla striata (Orchidaceae) transcriptome and identification of genes involved in polysaccharide biosynthesis.

Genet Mol Biol 2020 26;43(3):e20190417. Epub 2020 Jun 26.

Shaanxi Normal University, College of Life Sciences, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Xi'an, Shaanxi, China.

Bletilla striata polysaccharide (BSP) is the main component of Bletilla striata, which has important pharmacological and pharmacological effects; however, due to the lack of genetic data, the metabolic pathways of BSP remain unclear. For this study, 11 representative resources of B. striata were analyzed, and the BSP contents of the different samples were significantly different; however, the monosaccharide composition of BSP was glucose and mannose. Read More

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http://dx.doi.org/10.1590/1678-4685-GMB-2019-0417DOI Listing

Productive, metabolic and anatomical parameters of menthol mint are influenced by light intensity.

An Acad Bras Cienc 2020 26;92(suppl 1):e20180321. Epub 2020 Jun 26.

Universidade Federal Rural do Rio de Janeiro/UFRRJ, Instituto de Química, Departamento de Bioquímica, Laboratório de Bioquímica de Plantas, BR 465, Km 7, 23897-000 Seropédica, RJ, Brazil.

The cultivation of aromatic species to obtain essential oils has great economic importance, presenting an increasing demand from different industrial sectors, especially to menthol mint (Mentha arvensis L.) essential oil, rich in menthol (70-80%). Consortium cultivation has been an important practice in agricultural systems whose land use is necessary, consequently promoting strong competition for light in reduced space. Read More

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http://dx.doi.org/10.1590/0001-3765202020180321DOI Listing

Associated to Blossom Blight in Chile.

Plant Dis 2020 Jun 30:PDIS09192055SC. Epub 2020 Jun 30.

Departamento de Sanidad Vegetal, Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile.

Table grapes are highly susceptible to infections during the bloom period. After reaching the flower development stage, remains quiescent until berry ripening or gives rise to blossom blight under specific climate conditions. A research study was conducted on the Chilean Central Valley during the 2018-2019 growing season. Read More

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http://dx.doi.org/10.1094/PDIS-09-19-2055-SCDOI Listing

Incidence, Severity, and Characterization of Phytophthora Foot Rot of Citrus in Texas and Implications for Disease Management.

Plant Dis 2020 Jun 30:PDIS07191493RE. Epub 2020 Jun 30.

Citrus Center, Texas A&M University-Kingsville, Weslaco TX 78599, U.S.A.

-induced foot rot, also known as gummosis, is an important disease affecting citrus production worldwide. In Texas, the third-largest citrus-producing state in the United States, limited information is available on the etiology and epidemiology of foot rot in commercial orchards. This study comprises a survey of foot rot incidence and severity in Texas and the characterization of isolates associated with the disease. Read More

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http://dx.doi.org/10.1094/PDIS-07-19-1493-REDOI Listing

Decreased Sensitivity of to Pyraclostrobin in Alberta, Canada.

Plant Dis 2020 Jun 30:PDIS11192461RE. Epub 2020 Jun 30.

Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada.

, the causal agent of blackleg of canola (), can be managed with pyraclostrobin and other strobilurin fungicides. Their frequent application, however, poses a risk for the development of insensitivity in fungal populations. A collection of single-spore isolates recovered from infected canola stubble in Alberta, Canada, in 2016 was evaluated for its pyraclostrobin sensitivity. Read More

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http://dx.doi.org/10.1094/PDIS-11-19-2461-REDOI Listing

The Potential of Plant-made Vaccines to Fight Picornavirus.

Expert Rev Vaccines 2020 Jul 1. Epub 2020 Jul 1.

Laboratorio de Biofarmacéuticos recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico; Sección de Biotecnología, Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí , San Luis Potosí, Mexico.

Introduction: Several are pathogens that generate serious problems for human and animal health worldwide. Vaccination is an attractive approach to fight against picornaviruses. In this regard, the development of low-cost vaccines is a priority to ensure coverage; especially in developing and low-income countries. Read More

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http://dx.doi.org/10.1080/14760584.2020.1791090DOI Listing

Quantitative Proteomics of Maize Roots Treated with a Protein Hydrolysate: A Comparative Study with Transcriptomics Highlights the Molecular Mechanisms Responsive to Biostimulants.

J Agric Food Chem 2020 Jul 1. Epub 2020 Jul 1.

Department of Agronomy, Food, Natural Resources, Animals, and Environment, University of Padova, Padua 35020, Italy.

Protein hydrolysate (PH)-based biostimulants offer a cost-effective and sustainable approach for the regulation of physiological processes in plants to stimulate growth and improve stress tolerance. Understanding the mode of action of PHs is challenging, but it is indispensable to improve existing candidates and to develop novel molecules with enhanced stimulatory effects. Hence, the present study aimed to understand the proteome level responses in the B73 maize roots treated with APR, a PH biostimulant, at two increasing concentrations and to compare and integrate it with the transcriptomic data obtained previously under identical experimental conditions. Read More

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http://dx.doi.org/10.1021/acs.jafc.0c01593DOI Listing

[Effects of the Immobilization of Cadmium in Soil Alone or Combined with Foliar Application of Selenium on Cadmium Accumulation in the Plants of Different Genotypes of Tsai-tai].

Huan Jing Ke Xue 2020 Jul;41(7):3434-3440

School of Environmental Studies, China University of Geosciences, Wuhan 430078, China.

To explore the safe utilization of technology in mildly and moderately cadmium (Cd)-contaminated farmland and realize the safe production of agricultural products, two different cadmium-accumulating genotypes of Tsai-tai were used as test crops, using the pot experiment method. The same six treatments were set on the soil where the two test crops were planted:control (CK), addition of 3% (mass fraction) biochar (BC), addition of 0.17% calcium magnesium phosphate fertilizers (CMP), foliar application of 3 mg·L NaSeO aqueous solution (Se), BC+Se, and CMP+Se, to study the changes in available cadmium in soil under different treatments and the characteristics of cadmium accumulation in different parts of the plant. Read More

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http://dx.doi.org/10.13227/j.hjkx.202001098DOI Listing

[Longitudinal Distribution of Benthic Macroinvertebrates Affected by a Hydropower Plant Cascade in the Mudan River].

Huan Jing Ke Xue 2020 Jul;41(7):3266-3274

State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China.

Hydropower plant operation changes river habitats in various aspects, and thus affects the community composition of the river ecosystem. As a result, the river health is adversely affected. The influence of a hydropower plant cascade on river continuity is even more pronounced. Read More

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http://dx.doi.org/10.13227/j.hjkx.201912084DOI Listing

[Concentrations of Typical Perfluoroalkyl Acids and Contributions of Their Precursors in the Water of the Le'an River in China].

Huan Jing Ke Xue 2020 Jul;41(7):3204-3211

China Institute of Water Resources and Hydropower Research, Beijing 100038, China.

Transformation of perfluoroalkyl substance (PFASs) precursors and their contribution to PFASs pollution have become a subject of great research interest. The concentration of PFASs and their precursors and the transformation of precursors in the water samples collected from Le'an River and the effluents of sewage treatment plants (STPs) were investigated based on methods including hydroxyl radical (·OH) oxidation, extraction by solid phase, and ultra-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The results of the study revealed that the PFAS concentrations were in the range of 14. Read More

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http://dx.doi.org/10.13227/j.hjkx.201911121DOI Listing

[Temporal and Spatial Variation Patterns of the Environmental Elements in the Sediments of the Liaohe Estuary and the Related Influencing Factors].

Huan Jing Ke Xue 2020 Jul;41(7):3175-3185

National Marine Environmental Monitoring Center, Dalian 116023, China.

Remote sensing images, field survey data, and historical monitoring data are collected to analyze the historical change trend and spatial variation rules of sediment quality of the Liaohe Estuary and further investigate the effects of sea-area utilization type and vegetation succession stage on the variation patterns of environmental elements in the sediments. The results showed that the quality of the sediments in the Liaohe Estuary is overall favorable, and the average contents of various elements all satisfy the quality standards of first-grade sediments. The nutritive elements in the sediments exhibit obvious zonal distribution patterns, while heavy metals are randomly distributed and exhibit no obvious patterns. Read More

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http://dx.doi.org/10.13227/j.hjkx.201910041DOI Listing

[Impacts of Leaf Surface Micromorphology Variation on the Ability to Capture Particulate Matter].

Huan Jing Ke Xue 2020 Jul;41(7):3136-3147

Key Laboratory of Forest Ecology and Environment of National State Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China.

As the most important carrier of atmospheric particles captured by plants, the differences in micromorphology characteristics and leaf roughness are important determinants of particle capture capacity. Leaf micromorphology usually changes with growth (internal factor), and with environmental pollution intensity (external factor). The existing dust-spray simulation was always short; however, the leaf micromorphology changes had a clear delayed response, and therefore its results could not reflect the micromorphology changes caused by internal and external factors that influence the particulate capture capacity of leaves. Read More

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http://dx.doi.org/10.13227/j.hjkx.201912264DOI Listing

[Source Profiles of Industrial Emission-Based VOCs in Chengdu].

Huan Jing Ke Xue 2020 Jul;41(7):3042-3055

Chengdu Key Laboratory of Air Pollution Research, Chengdu Academy of Environmental Sciences, Chengdu 610072, China.

The volatile organic compound (VOC) emission characteristics of various production procedures were analyzed through GC-MS after the emissions of typical enterprises such as automobile manufacturing, petrochemical, and other industries had been sampled with SUMMA canisters. Each production procedure in the automobile manufacturing and petrochemical industries was considered. The results showed that each automobile manufacturing procedure had its own dominant species, and alkanes (32%) and aromatics (35%) were the main emission species of coating spraying. Read More

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http://dx.doi.org/10.13227/j.hjkx.201912203DOI Listing

[Contribution of Emissions from the Iron and Steel Industry to Air Quality in China].

Huan Jing Ke Xue 2020 Jul;41(7):2981-2994

Hebei Zhengrun Environmental Technology Co., Ltd., Shijiazhuang 050091, China.

Based on the data from a continuous emission monitoring systems network in 2015, this study analyzed the compliance rates of exhaust gas in the processes of China's iron and steel industry, and established a high-resolution steel plant emission inventory for China (HSEC, 2015), based on the bottom-up method. The contribution of emissions from the iron and steel industry to regional air quality was quantitatively simulated using a CAMx model. The results showed that in 2015, the total emissions of SO, NO, PM, PM, PCDD/Fs, VOCs, CO, BC, OC, EC, and F were 374800 t, 720500 t, 334800 t, 150300 t, 1. Read More

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http://dx.doi.org/10.13227/j.hjkx.201912166DOI Listing

[Effects of Simulated Acid Rain on Soil Fungi Diversity in the Transition Zone of Moso Bamboo and Broadleaf Forest].

Huan Jing Ke Xue 2020 May;41(5):2476-2484

Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, Zhejiang A&F University, Hangzhou 311300, China.

Acid rain is an important phenomenon in the context of global climate change, and can strongly influence forest ecology. There have been many studies on the response of plants to acid rain. However, the effect of acid rain on soil microbial communities is still largely unknown. Read More

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http://dx.doi.org/10.13227/j.hjkx.201910180DOI Listing

[Effects of Biochar Application on Soil Microbial Nutrient Limitations and Carbon Use Efficiency in Lou Soil].

Huan Jing Ke Xue 2020 May;41(5):2425-2433

Agrotechnical Promotion Station in Mianxian Country, Hanzhong 724200, China.

Soil microbial metabolism is vital for nutrient cycling and stability of an ecosystem. To elucidate the long-term effects of biochar application on nutrient limitations and carbon use efficiency (CUE) of soil microbial metabolisms, biochars pyrolyzed at 450℃ from trunks and branches of fruit trees under an oxygen-limited condition were mixed with the top Lou soils (0-20 cm) with application amounts of 0, 20, 40, 60, and 80 t·hm in 2012. Corn-wheat rotation was carried out afterwards for seven years. Read More

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http://dx.doi.org/10.13227/j.hjkx.201911062DOI Listing

[Toxicity of Chromium to Root Growth of Barley as Affected by Chromium Speciation and Soil Properties].

Huan Jing Ke Xue 2020 May;41(5):2398-2405

Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.

Tri-and hexavalent chromium have different chemical properties, and their levels of toxicity to plants are different. However, there is no limit set by the soil environmental quality risk control standard for Cr(Ⅲ) or Cr(Ⅵ). Therefore, studying the ecological toxicity of Cr has important implications for protecting the environment. Read More

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http://dx.doi.org/10.13227/j.hjkx.201909261DOI Listing

[Molecular Chemo-diversity of the Dissolved Organic Matter Occurring in Urban Stormwater Runoff].

Huan Jing Ke Xue 2020 May;41(5):2272-2280

Shanghai Academy of Environmental Sciences, Shanghai 20233, China.

Stormwater runoff pollution occurring in urban areas can be a notable threat to the ecological environments of receiving water bodies. Dissolved organic matter (DOM) constitutes the primary type of pollutant in stormwater runoff, and tracking of its components and sources can provide valuable scientific bases for the future abatement of stormwater runoff pollution. In this study, aiming to demonstrate the characteristics and sources of the contained DOM in both pavement runoff (PR) and greenland runoff (GR), we applied ultra-high-resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) to analyze the molecular chemo-diversity of their DOM, as well as Spearman rank correlations between the molecular chemo-diversity and water quality indicators including suspended solids (SS), total nitrogen (TN), dissolved organic carbon (DOC), and dissolved lead (Pb). Read More

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http://dx.doi.org/10.13227/j.hjkx.201910238DOI Listing

[Occurrence and Ecological Risk of Eight Typical PhACs in Surface Water and Its Impact on ].

Huan Jing Ke Xue 2020 May;41(5):2239-2246

Key Laboratory for Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.

The occurrence and risk assessment of eight typical pharmaceutical active compounds (PhACs) in a receiving water body of wastewater treatment plant effluent were investigated. The results showed that the total concentrations of eight PhACs in summer and winter ranged from 27.6 to 226. Read More

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http://dx.doi.org/10.13227/j.hjkx.201910089DOI Listing

[Comparison of Three Receptor Models for Source Apportionment of PM in Shanghai: Using Hourly Resolved PM Chemical Composition Data].

Authors:
Min Zhou

Huan Jing Ke Xue 2020 May;41(5):1997-2005

Shanghai Academy of Environmental Sciences, Shanghai 200233, China.

Continuous measurements of PM and its chemical composition, including inorganic ions, carbon components, and inorganic elements, were conducted in the urban area of Shanghai from November 2 to 24, 2014. The chemical characteristics and sources of PM were discussed. The average mass concentration of PM was (64±33) μg·m (ranging from 12 to 181 μg·m). Read More

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http://dx.doi.org/10.13227/j.hjkx.201909170DOI Listing

[Effect of Pyrolytic Temperature and Time on Characteristics of Derived Biochar and Preliminary Assessment of the Ecological Risk].

Huan Jing Ke Xue 2020 Jun;41(6):2963-2971

Institute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China.

A batch of biochar was produced from pyrolysis of (TBCs) at 200-500℃ for 2 h and 6 h to investigate the effects of pyrolytic temperature and heating retention time on the physico-chemical properties. Moreover, () HB101 and the seeds of were used to preliminarily test the ecological risk of the TBCs. Results showed that the heating retention time (i. Read More

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http://dx.doi.org/10.13227/j.hjkx.201909072DOI Listing

[Root Activities of Re-Vegetated Plant Species Regulate Soil Nutrients and Bacterial Diversity in the Riparian Zone of the Three Gorges Reservoir].

Huan Jing Ke Xue 2020 Jun;41(6):2898-2907

Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir, Key Laboratory of Eco-environment in the Three Gorges Reservoir of the Ministry of Education, School of Life Sciences, Southwest University, Chongqing 400715, China.

Plants modify the soil microenvironment through root exudation. It is important to study the dynamic changes of soil ecosystem from the perspective of root-soil-microbe interactions after vegetation restoration in the riparian zone of the Three Gorges Reservoir (TGR). The rhizosphere and bulk soils of and were collected from the vegetation restoration demonstration base of Ruxi River to explore the differences in nutrient contents and enzyme activities between the rhizosphere and bulk soils. Read More

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http://dx.doi.org/10.13227/j.hjkx.201911214DOI Listing

[Bacterial Community Composition in Cadmium-Contaminated Soils in Xinxiang City and Its Ability to Reduce Cadmium Bioaccumulation in Pak Choi ( L.)].

Huan Jing Ke Xue 2020 Jun;41(6):2889-2897

Collaborative Innovation Center of Water Security for Water Source Region of Mid-route Project of South-North Water Diversion of Henan Province, School of Agricultural Engineering, Nanyang Normal University, Nanyang 473061, China.

There are many types of bacteria in heavy metal-contaminated soils, including plant growth-promoting bacteria and heavy metal-immobilizing bacteria, which may potentially be used for the bioremediation of contaminated soil. In this study, the Cd-contaminated soil around a battery factory in Xinxiang City was collected and its bacterial community composition was analyzed using high-throughput sequencing (HTS) and the plate lineation separation method. The traditional culture method showed that bacteria isolated from contaminated soil belonged to four phyla (Firmicutes, Actinobacteria, Proteobacteria, and Bacteroidetes) and 30 genera including , and . Read More

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http://dx.doi.org/10.13227/j.hjkx.201912039DOI Listing

[Effects of Biochar on Bioavailability of Two Elements in Phosphorus and Cadmium-Enriched Soil and Accumulation of Cadmium in Crops].

Huan Jing Ke Xue 2020 Jun;41(6):2861-2868

School of Environmental Studies, China University of Geosciences, Wuhan 430074, China.

Using phosphorus and cadmium enriched soil (total Cd is 0.94 mg·kg, total phosphorus is 0.86 g·kg) and low cadmium accumulation genotype Jinqiuhong 3 as experimental materials, we set up four treatments: absolute control (only NK inorganic fertilizer), relative control (CKp, NPK inorganic fertilizer), biochar (only NK inorganic fertilizer), and biochar+phosphate fertilizer (BC-CKp). Read More

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http://dx.doi.org/10.13227/j.hjkx.201911278DOI Listing

[Low Temperature Ammonia Nitrogen Removal from an Iron, Manganese, and Ammonia Groundwater Purification Process with Different Concentrations of Iron and Manganese].

Huan Jing Ke Xue 2020 Jun;41(6):2727-2735

Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.

In a groundwater plant, removal of iron, manganese, and ammonia nitrogen was performed via a purification process using a filter column at a low temperature (5-6℃). Iron, manganese and ammonia [Fe(Ⅱ) 0-19.26 mg·L, Mn(Ⅱ) 0. Read More

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http://dx.doi.org/10.13227/j.hjkx.201912111DOI Listing

[Comparative Phosphorus Accumulation and Ca-P Content of Two Submerged Plants in Response to Light Intensity and Phosphorus Levels].

Huan Jing Ke Xue 2020 Jun;41(6):2698-2705

Key Laboratory of Ecological of Lakes and Rivers and Algal Utilization of Hubei Province, School of Civil and Environment, Hubei University of Technology, Wuhan 430068, China.

The micro-environment formed by the photosynthesis of submerged plants is conducive to the formation of CaCO-P from co-precipitation of calcium and phosphorus in water, thereby permanently removing phosphorus from water to the bottom mud and avoiding secondary pollution after plants decay. However, CaCO-P co-precipitation shows obvious specific-differences and environmental dependencies. In the present study, two different submerged plants, and , were used as the research objects. Read More

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http://dx.doi.org/10.13227/j.hjkx.201909258DOI Listing

[Characteristics and Sources of Inorganic Ions and Organic Acids in Precipitation in the Northern Suburb of Nanjing, China].

Huan Jing Ke Xue 2020 Jun;41(6):2519-2527

Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science & Technology, Nanjing 210044, China.

Rainwater samples were collected in Nanjing from December 2016 to November 2017. Water-soluble ion and organic acid content in rainwater samples was determined to analyze the chemical characteristics of precipitation and their seasonality. The positive matrix factorization (PMF) model was employed to identify the potential sources of precipitation. Read More

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http://dx.doi.org/10.13227/j.hjkx.201911049DOI Listing

[Enhanced Phytoextraction of Cadmium Contaminated Soil by with Biodegradable Chelate GLDA].

Huan Jing Ke Xue 2020 Feb;41(2):979-985

College of Architecture and Environment, Sichuan University, Chengdu 610065, China.

Chelating agents can increase the bioavailability of heavy metals and enhance their enrichment in plants. The effects of different concentrations of biodegradable chelating agent L-glutamic acid -diacetic acid (GLDA) on the remediation of heavy metal-contaminated soil by super-enriched plant were investigated by pot experiments with Cd-contaminated soil. Results show that low-dose GLDA could significantly promote the growth of , and the biomass of was the highest at 2. Read More

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http://dx.doi.org/10.13227/j.hjkx.201907117DOI Listing
February 2020

[Accumulation and Translocation of Cd in Under the Influence of Selenium].

Huan Jing Ke Xue 2020 Feb;41(2):962-969

Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.

Cadmium (Cd) is a highly toxic heavy metal. (pak choi) is a vastly common vegetable, which readily accumulates Cd. Given the current conditions of Cd contamination in domestic soil, it is important to reduce Cd accumulation in the edible part of pak choi. Read More

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http://dx.doi.org/10.13227/j.hjkx.201909054DOI Listing
February 2020

[Simultaneous Quantitative Detection of Thirteen Common Antibiotics in Leafy Vegetables by Ultra-High Performance Liquid Chromatography-Tandem Mass Spectrometry].

Huan Jing Ke Xue 2020 Feb;41(2):952-961

College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin 300384, China.

An analytical approach was developed to simultaneously determine 13 antibiotics in sulfonamides, quinolones, and macrolides in leafy vegetables by ultra-performance liquid chromatography coupled with triple quadrupole mass spectrometry (UPLC-MS/MS). After optimizing extracted solutions, purification methods, and eluents of antibiotics in vegetable substrates, and taking into account the influence of environmental changes and experimental conditions on the results, the optimal experimental scheme was determined. This involved ①weighing 500 mg of vegetable samples and adding 20 mL of methanol-Mcllvaine-Na EDTA solution; ② conducting ultrasonic and centrifugal extraction three times; ③ Allowing rotary evaporation to 20 mL to pass a HLB solid phase extraction column; ④ Eluting the extraction column using 6 mL of methanol, upon which the eluent was dried almost completely; ⑤ Re-dissolving the eluent with a mixed solution of acetonitrile:water (volume ratio of 2:8); ⑥ Detecting by UPLC-MS/MS after centrifugation and filtering. Read More

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http://dx.doi.org/10.13227/j.hjkx.201907101DOI Listing
February 2020

[Effects of Mycorrhizal Fungi on Nitrification and Denitrification in the Rhizospheric Soil of Aquatic Plants and Its Microbial Mechanism].

Huan Jing Ke Xue 2020 Feb;41(2):932-940

Shanghai Municipal Engineering Design Institute(Group) Co., Ltd., Shanghai 200092, China.

To investigate the effect of mycorrhizal fungi inoculation on nitrification-denitrification in the rhizospheric soil of aquatic plants, and were inoculated with the strain MF-MD obtained from local soil. Uninoculated plants served as the control group. The plants were cultivated for 3 months under nitrogen eutrophication in water, and then the nitrification and denitrification activities in the rhizospheric soil were determined. Read More

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http://dx.doi.org/10.13227/j.hjkx.201906119DOI Listing
February 2020

[Characteristics and Factors of Soil Enzyme Activity for Different Plant Communities in Yellow River Delta].

Huan Jing Ke Xue 2020 Feb;41(2):895-904

School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China.

Soil enzymes play key roles in the construction and succession of coastal wetland communities, while the driving mechanism of their activities under water and salt stress conditions is still unclear. The activities and distributions of sucrase, phosphatase, catalase, and urease in the rhizosphere and non-rhizosphere soils of , , and communities were studied in the Yellow River Delta. Moreover, the changes in soil enzyme activities and their influencing factors during the succession of halophytic plant communities were discussed in combination with changes in the physicochemical properties of soil. Read More

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http://dx.doi.org/10.13227/j.hjkx.201908051DOI Listing
February 2020

[Temporal Anaerobic Effect on Aerobic Granular Sludge with Intermittent Influent-Intermittent Aeration].

Huan Jing Ke Xue 2020 Feb;41(2):856-866

Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.

To initiate the domestic sewage aerobic granular sludge (AGS) process, the experiment is operated by intermittent influent-effluent aeration to reduce the concentration of nitrate and the inhibition of PAO, and realize granulation by phosphate precipitation and positive electricity particles generated during phosphorus removal. The sludge from a sewage treatment plant is inoculated into the SBR reactors R1, R2, R3, and R4, for durations of 30, 60, 90, and 120 min total anaerobic time. This was used to study the effect of anaerobic time on the aerobic granular sludge system in domestic sewage. Read More

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http://dx.doi.org/10.13227/j.hjkx.201908234DOI Listing
February 2020
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