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https://www.readbyqxmd.com/read/27917349/effect-of-acute-salinity-stress-on-ion-homeostasis-na-k-atpase-and-histological-structure-in-sea-cucumber-apostichopus-japonicus
#1
Chenfan Geng, Yi Tian, Yanpeng Shang, Liqiang Wang, Yanan Jiang, Yaqing Chang
BACKGROUND: Sea cucumbers (Apostichopus japonicus) are an imperiled fauna exposed to a variety of environmental condition such as salinity and studies are urgently needed to assess their effects to guide aquaculture efforts. The effects of acute salinity stress on coelomic fluid osmotic pressure, ion concentrations, the activity of Na(+)/K(+)-ATPase in respiratory trees and the histological variations were measured to evaluate the salinity tolerance of sea cucumbers. RESULTS: Significant correlations in osmotic pressure were observed between coelomic fluid and ambient environmental salinity...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27916887/cucumber-metallothionein-like-2-csmtl2-exhibits-metal-binding-properties
#2
Yu Pan, Yanglu Pan, Junpeng Zhai, Yan Xiong, Jinhua Li, Xiaobing Du, Chenggang Su, Xingguo Zhang
We identified a novel member of the metallothionein (MT) family, Cucumis sativus metallothionein-like 2 (CsMTL2), by screening a young cucumber fruit complementary DNA (cDNA) library. The CsMTL2 encodes a putative 77-amino acid Class II MT protein that contains two cysteine (Cys)-rich domains separated by a Cys-free spacer region. We found that CsMTL2 expression was regulated by metal stress and was specifically induced by Cd(2+) treatment. We investigated the metal-binding characteristics of CsMTL2 and its possible role in the homeostasis and/or detoxification of metals by heterologous overexpression in Escherichia coli cells...
November 30, 2016: Genes
https://www.readbyqxmd.com/read/27915454/round-fruit-shape-in-wi7239-cucumber-is-controlled-by-two-interacting-quantitative-trait-loci-with-one-putatively-encoding-a-tomato-sun-homolog
#3
Yupeng Pan, Xinjing Liang, Meiling Gao, Hanqiang Liu, Huanwen Meng, Yiqun Weng, Zhihui Cheng
QTL analysis revealed two interacting loci, FS1.2 and FS2.1, underlying round fruit shape in WI7239 cucumber; CsSUN , a homolog of tomato fruit shape gene SUN , was a candidate for FS1.2. Fruit size is an important quality and yield trait in cucumber, but its genetic basis remains poorly understood. Here we reported QTL mapping results on fruit size with segregating populations derived from the cross between WI7238 (long fruit) and WI7239 (round fruit) inbred cucumber lines. Phenotypic data of fruit length and diameter were collected at anthesis, immature and mature fruit stages in four environments...
December 3, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27915172/dark-chilling-induces-substantial-structural-changes-and-modifies-galactolipid-and-carotenoid-composition-during-chloroplast-biogenesis-in-cucumber-cucumis-sativus-l-cotyledons
#4
Joanna Skupień, Joanna Wójtowicz, Łucja Kowalewska, Radosław Mazur, Maciej Garstka, Katarzyna Gieczewska, Agnieszka Mostowska
Plants in a temperate climate are often subject to different environmental factors, chilling stress among them, which influence the growth especially during early stages of plant development. Chloroplasts are one of the first organelles affected by the chilling stress. Therefore the proper biogenesis of chloroplasts in early stages of plant growth is crucial for undertaking the photosynthetic activity. In this paper, the analysis of the cotyledon chloroplast biogenesis at different levels of plastid organization was performed in cucumber, one of the most popular chilling sensitive crops...
November 28, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27913980/complete-nucleotide-sequences-and-construction-of-full-length-infectious-cdna-clones-of-cucumber-green-mottle-mosaic-virus-cgmmv-in-a-versatile-newly-developed-binary-vector-including-both-35s-and-t7-promoters
#5
Chan-Hwan Park, Hye-Kyoung Ju, Jae-Yeong Han, Jong-Seo Park, Ik-Hyun Kim, Eun-Young Seo, Jung-Kyu Kim, John Hammond, Hyoun-Sub Lim
Seed-transmitted viruses have caused significant damage to watermelon crops in Korea in recent years, with cucumber green mottle mosaic virus (CGMMV) infection widespread as a result of infected seed lots. To determine the likely origin of CGMMV infection, we collected CGMMV isolates from watermelon and melon fields and generated full-length infectious cDNA clones. The full-length cDNAs were cloned into newly constructed binary vector pJY, which includes both the 35S and T7 promoters for versatile usage (agroinfiltration and in vitro RNA transcription) and a modified hepatitis delta virus ribozyme sequence to precisely cleave RNA transcripts at the 3' end of the tobamovirus genome...
December 2, 2016: Virus Genes
https://www.readbyqxmd.com/read/27911925/attenuation-of-quorum-sensing-regulated-virulence-of-pectobacterium-carotovorum-subsp-carotovorum-through-an-ahl-lactonase-produced-by-lysinibacillus-sp-gs50
#6
Sneha S Garge, Anuradha S Nerurkar
Quorum sensing (QS) is a mechanism in which Gram negative bacterial pathogens sense their population density through acyl homoserine lactones (AHLs) and regulate the expression of virulence factors. Enzymatic degradation of AHLs by lactonases, known as quorum quenching (QQ), is thus a potential strategy for attenuating QS regulated bacterial infections. We characterised the QQ activity of soil isolate Lysinibacillus sp. Gs50 and explored its potential for controlling bacterial soft rot of crop plants. Lysinibacillus sp...
2016: PloS One
https://www.readbyqxmd.com/read/27904927/effects-of-tin-on-enzyme-activity-in-holothuria-grisea-echinodermata-holothuroidea
#7
Tatiana Miura Pereira, Lívia Pôncio Mattar, Edgar Rocha Pereira, Julia Merçon, Ary Gomes da Silva, Zilma Maria Almeida Cruz
This study evaluated the effect of tin exposure on enzyme activity in the sea cucumber (Holothuria grisea Selenka, 1867). After exposure to 0 (control), 0.04, 0.08, or 0.12 mg L(-1) tin, we tested the activities of total cholinesterase in longitudinal muscles, acid phosphatase in gonads and the respiratory tree, as well as alkaline phosphatase in the intestines during a 96-h bioassay. Regression analyses showed that all enzyme activities declined with increasing tin concentrations, except for acid phosphatase in the respiratory tree, which were similarly, inhibited at all tin concentrations...
November 30, 2016: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/27902804/hierarchical-map-of-orthologous-genomic-regions-reconstructed-from-two-closely-related-genomes-cucumber-case-study
#8
Huifen Cao, Erli Pang, Kui Lin
Accurate identification of orthologous genomic regions (OGRs) between two closely related genomes is crucial for the reliable detection of genomic changes, which range from small-scale changes (e.g., single nucleotide or small nucleotides) to large-scale structural changes. Although diverse OGRs inferred at different levels have been successfully applied to address various biological questions, a limited number of studies have simultaneously integrated OGRs from different levels. Here, we report on a new approach to construct a hierarchical map of OGRs...
November 2016: Plant Genome
https://www.readbyqxmd.com/read/27902284/chryseobacterium-cucumeris-sp-nov-an-endophyte-isolated-from-cucumber-cucumis-sativus-l-root-and-emended-description-of-chryseobacterium-arthrosphaerae
#9
Jin-Ju Jeong, Dong Wan Lee, Byeonghyeok Park, Mee Kyung Sang, In-Geol Choi, Ki Deok Kim
The Gram-stain-negative, yellow-pigmented, rod-shaped bacterial strain GSE06T, isolated from the surface-sterilized root of a cucumber plant grown in a field in Gunsan, Korea, was characterized by not only cultural and morphological features but also physiological, biochemical, and molecular analyses. Phylogenetic analyses based on 16S rRNA gene sequences revealed that strain GSE06T was most related to species of the genus Chryseobacterium. Furthermore, strain GSE06T exhibited the highest sequence similarities with type strains of Chryseobacterium indologenes ATCC 29897T (98...
November 17, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27898768/transcriptome-and-small-rnaome-dynamics-during-a-resistant-and-susceptible-interaction-between-cucumber-and-downy-mildew
#10
Alyssa Burkhardt, Brad Day
Cucumber ( L.) downy mildew, caused by the obligate oomycete pathogen (Berk. and Curt.) Rostov., is the primary factor limiting cucumber production. Although sources of resistance have been identified, such as plant introduction line PI 197088, the genes and processes involved in mediating resistance are still unknown. In the current study, we conducted a comprehensive transcriptome and small RNAome analysis of a resistant (PI 197088) and susceptible ('Vlaspik') cucumber during a time course of infection using Illumina sequencing...
March 2016: Plant Genome
https://www.readbyqxmd.com/read/27893207/prevalence-and-risk-factors-for-helicobacter-pylori-infection-among-healthy-inhabitants-in-northern-jakarta-indonesia
#11
Yasuyuki Goto, Ari Fahrial Syam, Nikko Darnindro, Florentina Carolin Puspita Hapsari
Background: The prevalence of Helicobacter pylori (H. pylori) infection in Indonesia has been reported to be exceedingly low. The purpose of our study was to confirm whether this is the case in Northern Jakarta using a sensitive 13C-urea breath test (UBT), and to examine any associations with lifestyle/environment factors and potential routes of transmission. Methods: We recruited a total of 196 subjects from a low-income community in Northern Jakarta, Indonesia, data from 193 who completed a questionnaire about their lifestyle/environment and had UBT being included as the final...
January 10, 2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27892922/convergence-and-divergence-of-bitterness-biosynthesis-and-regulation-in-cucurbitaceae
#12
Yuan Zhou, Yongshuo Ma, Jianguo Zeng, Lixin Duan, Xiaofeng Xue, Huaisong Wang, Tao Lin, Zhiqiang Liu, Kewu Zeng, Yang Zhong, Shu Zhang, Qun Hu, Min Liu, Huimin Zhang, James Reed, Tessa Moses, Xinyan Liu, Peng Huang, Zhixing Qing, Xiubin Liu, Pengfei Tu, Hanhui Kuang, Zhonghua Zhang, Anne Osbourn, Dae-Kyun Ro, Yi Shang, Sanwen Huang
Differentiation of secondary metabolite profiles in closely related plant species provides clues for unravelling biosynthetic pathways and regulatory circuits, an area that is still underinvestigated. Cucurbitacins, a group of bitter and highly oxygenated tetracyclic triterpenes, are mainly produced by the plant family Cucurbitaceae. These compounds have similar structures, but differ in their antitumour activities and ecophysiological roles. By comparative analyses of the genomes of cucumber, melon and watermelon, we uncovered conserved syntenic loci encoding metabolic genes for distinct cucurbitacins...
November 28, 2016: Nature Plants
https://www.readbyqxmd.com/read/27891751/simultaneous-determination-of-pyrifluquinazon-and-its-main-metabolite-in-fruits-and-vegetables-by-using-quechers-hplc-ms-ms
#13
Xiangwei You, Chengcheng Sui, Yiqiang Li, Xiuguo Wang
A rapid, reliable and sensitive method is reported for the simultaneous analysis of pyrifluquinazon and its main metabolite NNI-0101-1H in fruits (strawberry and cherry) and vegetables (cucumber and tomato) using high-performance liquid chromatography coupled with tandem mass spectrometry. A modified quick, easy, cheap, effective, rugged and safe procedure was used for the sample pre-preparation. The target analytes were extracted with acetonitrile and then cleaned up using dispersive solid phase extraction procedure with primary secondary amine...
November 28, 2016: Journal of Separation Science
https://www.readbyqxmd.com/read/27891134/cucumber-cucumis-sativus-l-nitric-oxide-synthase-associated-gene1-csnoa1-plays-a-role-in-chilling-stress
#14
Xingwang Liu, Bin Liu, Shudan Xue, Yanlinq Cai, Wenzhu Qi, Chen Jian, Shuo Xu, Ting Wang, Huazhong Ren
Nitric oxide (NO) is a gaseous signaling molecule in plants, transducing information as a result of exposure to low temperatures. However, the underlying molecular mechanism linking NO with chilling stress is not well understood. Here, we functionally characterized the cucumber (Cucumis sativus L.) nitric oxide synthase-associated gene, NITRIC OXIDE ASSOCIATED 1 (CsNOA1). Expression analysis of CsNOA1, using quantitative real-time PCR, in situ hybridization, and a promoter::β-glucuronidase (GUS) reporter assay, revealed that it is expressed mainly in the root and shoot apical meristem (SAM), and that expression is up-regulated by low temperatures...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27886382/evaluation-of-the-effects-of-cucumis-sativus-seed-extract-on-serum-lipids-in-adult-hyperlipidemic-patients-a-randomized-double-blind-placebo-controlled-clinical-trial
#15
Rasool Soltani, Mohammad Hashemi, Alimohammad Farazmand, Gholamreza Asghari, Kiyan Heshmat-Ghahdarijani, Ali Kharazmkia, Syed Mustafa Ghanadian
Hyperlipidemia is associated with increased risk of atherosclerosis; therefore, control of this risk factor is very important in preventing atherosclerosis. Cucumber (Cucumis sativus) seed is used traditionally as a lipid-lowering nutritional supplement. The aim of this study was to evaluate the effect of cucumber seed extract on serum lipid profile in adult patients with mild hyperlipidemia. In a randomized double-blind placebo-controlled clinical trial, hyperlipidemic patients with inclusion criteria were randomly and equally assigned to either Cucumis or placebo groups and used one medicinal or placebo capsule, respectively, once daily with food for 6 wk...
November 25, 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27883217/nitric-oxide-is-involved-in-methane-induced-adventitious-root-formation-in-cucumber
#16
Fang Qi, Zhixin Xiang, Ninghai Kou, Weiti Cui, Daokun Xu, Ren Wang, Dan Zhu, Wenbiao Shen
Our previous studies revealed that methane (CH4 ) induces adventitious rooting in cucumber. However, the corresponding molecular mechanism is still elusive. In this work, we discovered that CH4 triggered the accumulation of nitric oxide (NO) and thereafter cucumber adventitious rooting, mimicking the inducing effects of sodium nitroprusside (SNP) and NONOate (two NO-releasing compounds). Above mentioned responses were sensitive to NO scavenger(s), showing that the accumulation of NO and adventitious root development were respectively impaired...
November 24, 2016: Physiologia Plantarum
https://www.readbyqxmd.com/read/27881977/different-virus-derived-sirnas-profiles-between-leaves-and-fruits-in-cucumber-green-mottle-mosaic-virus-infected-lagenaria-siceraria-plants
#17
Junmin Li, Hongying Zheng, Chenhua Zhang, Kelei Han, Shu Wang, Jiejun Peng, Yuwen Lu, Jinping Zhao, Pei Xu, Xiaohua Wu, Guojing Li, Jianping Chen, Fei Yan
RNA silencing is an evolutionarily conserved antiviral mechanism, through which virus-derived small interfering RNAs (vsiRNAs) playing roles in host antiviral defense are produced in virus-infected plant. Deep sequencing technology has revolutionized the study on the interaction between virus and plant host through the analysis of vsiRNAs profile. However, comparison of vsiRNA profiles in different tissues from a same host plant has been rarely reported. In this study, the profiles of vsiRNAs from leaves and fruits of Lagenaria siceraria plants infected with Cucumber green mottle mosaic virus (CGMMV) were comprehensively characterized and compared...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27881976/the-roles-of-alpha-momorcharin-and-jasmonic-acid-in-modulating-the-response-of-momordica-charantia-to-cucumber-mosaic-virus
#18
Ting Yang, Yao Meng, Li-Juan Chen, Hong-Hui Lin, De-Hui Xi
Alpha-momorcharin (α-MMC) is a type-I ribosome inactivating protein with a molecular weight of 29 kDa that is found in Momordica charantia, and has been shown to be effective against a broad range of human viruses as well as having anti-tumor activities. However, the role of endogenous α-MMC under viral infection and the mechanism of the anti-viral activities of α-MMC in plants are still unknown. To study the effect of α-MMC on plant viral defense and how α-MMC increases plant resistance to virus, the M...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27879040/differential-expression-of-cucumber-rna-dependent-rna-polymerase-1-genes-during-antiviral-defense-and-resistance
#19
Diana Leibman, Michael Kravchik, Dalia Wolf, Sabrina Haviv, Mira Weissberg, Ron Ophir, Harry S Paris, Peter Palukaitis, Shou-Wei Ding, Victor Gaba, Amit Gal-On
RNA-dependent RNA polymerase 1 (RDR1) plays a crucial role in plant defense against viruses. We observed that cucumber, Cucumis sativus, uniquely encodes a small gene family of four RDR1 genes. The cucumber RDR1 genes (CsRDR1a, CsRDR1b and duplicated CsRDR1c1/c2) shared 55-60% homology in their encoded amino acid sequences. In healthy cucumber plants, RDR1a and RDR1b transcripts were expressed at higher levels than transcripts of RDR1c1/c2, which were barely detectable. Expression of all four CsRDR1 genes was induced by virus infection, after which, the expression level of CsRDR1b increased 10- to 20-fold in several virus-resistant cucumber cultivars and in a broad virus-resistant transgenic cucumber line expressing a high level of transgene small RNAs, all without alteration in salicylic acid (SA) levels...
November 23, 2016: Molecular Plant Pathology
https://www.readbyqxmd.com/read/27864860/evaluation-of-a-loop-mediated-isothermal-amplification-assay-based-on-hrpz-gene-for-rapid-detection-and-identification-of-pseudomonas-syringae-pv-lachrymans-in-cucumber-leaves
#20
Xiang-Long Meng, Xue-Wen Xie, Yan-Xia Shi, A-Li Chai, Zhan-Hong Ma, Bao-Ju Li
AIMS: Cucumber angular leaf spot caused by Pseudomonas syringae pv. lachrymans (Psl) is an important and destructive disease worldwide, and no effective technique has been developed for the control of the pathogen. Detection of infection or latent in cucumber plants is critical to evaluate disease progress and strengthening management to avoid a serious epidemic in the fields. In this paper, we developed a rapid and sensitive method for detection of Psl using a isothermal method known as loop-mediated amplification (LAMP)...
November 19, 2016: Journal of Applied Microbiology
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