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Yunjie Liu, Dezhang Ren, Zhiyuan Song, Xinyan Wan, Chuntao Zhang, Fangming Jin, Zhibao Huo
A novel magnetic heavy metal adsorbent was prepared via diethylenetriamine (DETA) modification on magnetic hydrothermal carbon, with glucose and sugar-containing waste water as the carbon source. The prepared materials were characterized by FT-IR, SEM, TEM, EDXRF, TGA, elemental analysis, XPS, and magnetic moment determination. In this paper, the adsorption mechanism of the modified and unmodified adsorbents was well discussed. Four kinds of waste water (watermelon juice, expired sprite, sugar-pressing waste water, and confectionary waste water) were employed to produce heavy metal ion adsorbents; the chemical properties of hydrothermal carbon derived from the proposed sources were analyzed as well...
March 2, 2018: Environmental Science and Pollution Research International
Lorenzo Massimi, Antonella Giuliano, Maria Luisa Astolfi, Rossana Congedo, Andrea Masotti, Silvia Canepari
Recent studies have shown the potential of food waste materials as low cost adsorbents for the removal of heavy metals and toxic elements from wastewater. However, the adsorption experiments have been performed in heterogeneous conditions, consequently it is difficult to compare the efficiency of the individual adsorbents. In this study, the adsorption capacities of 12 food waste materials were evaluated by comparing the adsorbents' efficiency for the removal of 23 elements from complex multi-element solutions, maintaining homogeneous experimental conditions...
February 26, 2018: Materials
Zhiming Yan, Mei Wu, Biqing Hu, Minna Yao, Lan Zhang, Qiaomei Lu, Jie Pang
In this work, metal-organic framework particles incorporated fibers (UiO-66/PAN nanofibers) were used as adsorbent in pipette tip solid phase extraction (PT-SPE) for the first time. The UiO-66/PAN nanofibers were fabricated by a facile electrospinning method and characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction and nitrogen adsorption-desorption experiments. The UiO-66/PAN nanofibers were applied to assemble a novel PT-SPE cartridge for determination of four phytohormones followed by high performance liquid chromatography (HPLC)...
February 19, 2018: Journal of Chromatography. A
Jia Zhao, Jiang Liu, Hong Liang, Jing Huang, Zhe Chen, Yuanjun Nie, Changbiao Wang, Yuguo Wang
Bio-organic fertilizers (BOFs) combine functional microbes with a suitable substrate and have been shown to effectively suppress soil-borne diseases and promote plant growth. Here, we developed a novel bio-organic fertilizer (BOF) by fermentation of a cow plus chicken manure (M) compost using Fen-liquor Daqu (FLD) as a fermentation starter and compared the compositions of bacterial and fungal communities in the rhizosphere soil of watermelon plants after treatment with different fertilizers. Further, we aimed to explore the mechanisms underlying plant-promoting and disease (Fusarium wilt)-suppressing activities of each rhizosphere microbial community...
2018: PloS One
Arul Thomas, David Koch, William Marsteller, David Lewin, Adrian Reuben
BACKGROUND: Gastric antral vascular ectasia (GAVE) commonly presents as linear striped ("watermelon stomach") or punctate phenotypes, to which a newly discovered nodular form was recently added. AIMS: We performed a retrospective cohort study to detail and compare the clinical and histological characteristics of major GAVE phenotypes. METHODS: In 136 GAVE patients (tertiary care ambulatory and inpatient, median age 61.3 years, 73 men, and 63 women), clinical and laboratory results were recorded, with comorbidities, endoscopy indications, and complications of cirrhosis...
February 15, 2018: Digestive Diseases and Sciences
Wei Dong, Defeng Wu, Guoshen Li, Dewei Wu, Zicheng Wang
Dwarfism is one of the most valuable traits in watermelon breeding mainly because of its contribution to yield as well as the decreased labor required to cultivate and harvest smaller plants. However, the underlying genetic mechanism is unknown. In this study, a candidate dwarfism gene was identified by applying next-generation sequencing technology to analyze watermelon plants. We completed a whole-genome re-sequencing of two DNA bulks (dwarf pool and vine pool) generated from plants in an F2population. A genome-wide analysis of single nucleotide polymorphisms resulted in the detection of a genomic region harboring the candidate dwarfism gene Cla010726...
February 13, 2018: Scientific Reports
Baoshan Kang, Bin Peng, Huijie Wu, Lifeng Liu, Wanwan Wu, Qinsheng Gu
In this study, we found that the infectivity of zucchini yellow mosaic virus (ZYMV) in watermelon lines H1 and K6 changed from partial to complete after propagation in the susceptible watermelon line ZXG637. When using cucumber infected with strain ZYMV-CH87 as an inoculum (named ZYMV-CH87C), the mean incidences of infection in lines H1 and K6 were 6% and 11%, respectively. However, when these lines were inoculated with ZXG637 infected with ZYMV-CH87C (named ZYMV-637), 100% of the plants became infected. Sequencing of ZYMV from these different inoculums revealed two nucleotide changes in the P3 cistron in ZYMV-637, which resulted in changes in the amino acids at positions 768 and 857 of the P3 protein, compared with the original strain ZYMV-CH87...
February 9, 2018: Archives of Virology
Goitseone Malambane, Satoko Nonaka, Hiroshi Shiba, Hiroshi Ezura, Hisashi Tsujimoto, Kinya Akashi
Ethylene (C2H4), a phytohormone that is produced in response to both abiotic and biotic stresses, is an important factor influencing the efficiency of Agrobacterium-mediated transformation. In this study, effects of various ethylene inhibitors on the efficiency of Agrobacterium-mediated genetic transformation in drought-tolerant wild watermelon was comparatively examined. Consequently, in comparison to the application of chemical inhibitors such as AgNO3 and aminoethoxyvinylglycine (AVG), lower ethylene level was observed when the infecting Agrobacterium contained a gene for 1-aminocyclopropane-carboxylic acid (ACC) deaminase (acdS), which cleaves ethylene precursor ACC into α-ketobutyrate and ammonia...
February 9, 2018: Bioscience, Biotechnology, and Biochemistry
Aryan Rahimi-Midani, Yong Seok Lee, Se-Won Kang, Mi-Kyeong Kim, Tae-Jin Choi
Bacteriophages of Acidovorax citrulli, the causal agent of bacterial fruit blotch, were isolated from 39 watermelon, pumpkin, and cucumber leaf samples collected from various regions of Korea and tested against 18 A. citrulli strains. Among the six phages isolated, ACP17 forms the largest plaque, and exhibits the morphology of phages in the Myoviridae family with a head diameter of 100 ± 5 nm and tail length of 150 ± 5 nm. ACP17 has eclipse and latent periods of 25 ± 5 min and 50 ± 5 min, respectively, and a burst size of 120...
February 2018: Plant Pathology Journal
Sun-Ah Kwon, Won-Jae Song, Dong-Hyun Kang
The purpose of this study was evaluation of the effectiveness of superheated steam (SHS) on inactivation of foodborne pathogens on cantaloupes and watermelons. Saturated steam (SS) treatment was performed at 100 °C and that of SHS at 150 and 200 °C. Escherichia coli O157:H7, Salmonella Typhimurium and Listeria monocytogenes-inoculated cantaloupes and watermelons were exposed for a maximum of 30 s and 10 s, respectively. Populations of the three pathogens on cantaloupes and watermelons were reduced by more than 5 log after 200 °C steam treatment for 30 s and 10 s, respectively...
June 2018: Food Microbiology
Thangasamy Saminathan, Marleny García, Bandana Ghimire, Carlos Lopez, Abiodun Bodunrin, Padma Nimmakayala, Venkata L Abburi, Amnon Levi, Nagamani Balagurusamy, Umesh K Reddy
The plant microbiome is a key determinant of plant health and productivity, and changes in the plant microbiome can alter the tolerance to biotic and abiotic stresses and the quality of end produce. Little is known about the microbial diversity and its effect on carbohydrate metabolism in ripe fruits. In this study, we aimed to understand the diversity and function of microorganisms in relation to carbohydrate metabolism of ripe watermelon fruits. We used 16S metagenomics and RNAseq metatranscriptomics for analysis of red (PI459074, Congo, and SDRose) and yellow fruit-flesh cultivars (PI227202, PI435990, and JBush) of geographically and metabolically diverse watermelon cultivars...
2018: Frontiers in Plant Science
Wen-Hung Hsu, Yao-Kuang Wang, Meng-Shu Hsieh, Fu-Chen Kuo, Meng-Chieh Wu, Hsiang-Yao Shih, I-Chen Wu, Fang-Jung Yu, Huang-Ming Hu, Yu-Chung Su, Deng-Chyang Wu
Gastric antral vascular ectasia (GAVE) is an uncommon but important cause of chronic gastrointestinal bleeding. It is often associated with systemic diseases such as autoimmune diseases, liver cirrhosis, chronic renal insufficiency and cardiovascular disease. The etiology of GAVE has not been fully explored and remains controversial. Diagnosis is mainly based on endoscopic presentation with flat or raised erythematous stripes radiating from the pylorus to the antrum and resembles a watermelon. Clinical presentation may range from iron-deficiency anemia secondary to occult blood loss, melena to hematemesis...
2018: Therapeutic Advances in Gastroenterology
Xinyu Liang, Juntao Wang, Qiuhua Wu, Chun Wang, Zhi Wang
A hypercrosslinked triphenylamine polymer (HCTPA) was prepared through a simple one-step Friedel-Crafts alkylation reaction. The HCTPA had an extended π-conjugated system, large specific surface area and high micropore volume. In order to evaluate its extraction performance, the HCTPA was used as the adsorbent for the solid-phase extraction of the phenylurea herbicides (monuron, chlortoluron, isoproturon, monolinuron and buturon) from watermelon, tomato and cucumber samples. The main parameters that could affect the extraction efficiency including the sample volume, sample solution pH, sample solution loading rate and desorption conditions were investigated and optimized...
February 2, 2018: Journal of Chromatography. A
Joshua W Campbell, Jaret C Daniels, James D Ellis
Pollinators provide essential services for watermelon, Citrullus lanatus (Thunb.; Cucurbitales: Cucurbitaceae). Managed bumble bees, Bombus impatiens (Cresson; Hymenoptera: Apidae), have been shown to be a useful watermelon pollinator in some areas. However, the exact contribution bumble bees make to watermelon pollination and how their contribution compares to that of other bees is unclear. We used large cages (5.4 × 2.5 × 2.4 m) to confine bumble bee hives to watermelon plants and compared fruit set in those cages to cages containing watermelons but no pollinators, and to open areas of field next to cages (allows all pollinators)...
January 27, 2018: Journal of Economic Entomology
Tasnia Matin, Mohammed Naseemuddin, Mohamed Shoreibah, Peng Li, Kondal Kyanam Kabir Baig, Charles Mel Wilcox, Shajan Peter
AIM: To study and describe patients who underwent treatment for gastric antral vascular ectasia (GAVE) with different endoscopic treatment modalities. METHODS: We reviewed patients with GAVE who underwent treatment at University of Alabama at Birmingham between March 1, 2012 and December 31, 2016. Included patients had an endoscopic diagnosis of GAVE with associated upper gastrointestinal bleeding or iron deficiency anemia. RESULTS: Seven out of 15 patients had classic watermelon description for GAVE, 1/15 with diffuse/honeycomb pattern and 6/15 with nodular GAVE per EGD description...
January 16, 2018: World Journal of Gastrointestinal Endoscopy
Junling Dou, Shengjie Zhao, Xuqiang Lu, Nan He, Lei Zhang, Aslam Ali, Hanhui Kuang, Wenge Liu
A 159 bp deletion in ClFS1 gene encoding IQD protein is responsible for fruit shape in watermelon. Watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] is known for its rich diversity in fruit size and shape. Fruit shape has been one of the major objectives of watermelon breeding. However, the candidate genes and the underlying genetic mechanism for such an important trait in watermelon are unknown. In this study, we identified a locus on chromosome 3 of watermelon genome controlling fruit shape. Segregation analysis in F2 and BC1 populations derived from a cross between two inbred lines "Duan125" (elongate fruit) and "Zhengzhouzigua" (spherical fruit) suggests that fruit shape of watermelon is controlled by a single locus and elongate fruit (OO) is incompletely dominant to spherical fruit (oo) with the heterozygote (Oo) being oval fruit...
January 23, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
Yang Liu, Gangliang Huang, Jinchuan Hu
Extraction and antioxidant activity of polysaccharides from the Chinese watermelon was investigated. The polysaccharides were obtained by hot water extraction, ethanol precipitation, and deproteinization with HCl, respectively. The molecular weight was 3.02 × 104. It showed by high performance liquid chromatography (HPLC) and TLC that Chinese watermelon polysaccharides consisted of six monosaccharides, namely glucose, galactose, mannose, xylose, arabinose, and rhamnose. The polysaccharides contained the β-glycosidic bond...
January 18, 2018: International Journal of Biological Macromolecules
Kaiying Chen, Xingang Liu, Xiaohu Wu, Fengshou Dong, Jun Xu, Yongquan Zheng
A new analytical method using the quick, easy, cheap, effective, rugged and safe (QuEChERS) procedure for simultaneous determination of afidopyropen and its metabolite M440I007 residues in tomato, watermelon, pepper, cucumber, pear, grape, cabbage and soil samples was developed using ultra-high performance liquid chromatography coupled with tandem mass spectrometry. The target compound was determined in less than 5.0 min using an electrospray ionisation source in positive mode (ESI+). The limit of quantification was 1 μg kg-1 in different matrices...
January 17, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
Xiaozhen Yang, Hao Li, Yongchao Yang, Yongqi Wang, Yanling Mo, Ruimin Zhang, Yong Zhang, Jianxiang Ma, Chunhua Wei, Xian Zhang
Despite identification of WRKY family genes in numerous plant species, a little is known about WRKY genes in watermelon, one of the most economically important fruit crops around the world. Here, we identified a total of 63 putative WRKY genes in watermelon and classified them into three major groups (I-III) and five subgroups (IIa-IIe) in group II. The structure analysis indicated that ClWRKYs with different WRKY domains or motifs may play different roles by regulating respective target genes. The expressions of ClWRKYs in different tissues indicate that they are involved in various tissue growth and development...
2018: PloS One
Xiaohua He, Fuzhen Guo, Bin Liu
Simplifying sample processing, shortening the sample preparation time, and adjusting procedures to suitable for new health and safety regulations, these issues are the current challenges which electron microscopic examinations need to face. In order to resolve these problems, new plant tissue sample processing protocols for transmission electron microscopy should be developed. In the present study, we chose the LR-White resin-assisted processing protocol for the ultrastructural observation of different types of plant tissues...
January 15, 2018: Journal of Microscopy
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