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https://www.readbyqxmd.com/read/29149798/reconstructing-biosynthetic-pathway-of-the-plant-derived-cancer-chemopreventive-precursor-glucoraphanin-in-escherichia-coli
#1
Han Yang, Feixia Liu, Yin Li, Bo Yu
Epidemiological data confirmed a strong correlation between regular consumption of cruciferous vegetables and lower cancer risk. This cancer preventive property is mainly attributed to the glucosinolate products, such as glucoraphanin found in broccoli that is derived from methionine. Here we report the first successful reconstruction of the complete biosynthetic pathway of glucoraphanin from methionine in Escherichia coli via gene selection, pathway design, and protein engineering. We used branched-chain amino transferase 3 to catalyze two transamination steps to ensure the purity of precursor molecules and used cysteine as a sulfur donor to simplify the synthesis pathway...
November 17, 2017: ACS Synthetic Biology
https://www.readbyqxmd.com/read/29146249/composition-of-lactic-acid-bacteria-during-spontaneous-curly-kale-brassica-oleracea-var-sabellica-fermentation
#2
Magdalena Michalak, Klaudia Gustaw, Adam Waśko, Magdalena Polak-Berecka
The present work is the first report on spontaneous fermentation of curly kale and characteristics of autochthonous lactic acid bacteria (LAB). Our results indicate that curly kale fermentation is the new possibility of the technological use of this vegetable. Bacteria representing ten different species were isolated from three phases of curly kale fermentation and identified by MALDI-TOF mass spectrometry and 16S rRNA gene sequencing. Among them, four species were identified as Lactobacillus spp. (Lb. plantarum 332, Lb...
January 2018: Microbiological Research
https://www.readbyqxmd.com/read/29145811/genome-wide-analysis-of-the-auxin-indoleacetic-acid-aux-iaa-gene-family-in-allotetraploid-rapeseed-brassica-napus-l
#3
Haitao Li, Bo Wang, Qinghua Zhang, Jing Wang, Graham J King, Kede Liu
BACKGROUND: Auxin/Indoleacetic acid (Aux/IAA) genes participate in the auxin signaling pathway and play key roles in plant growth and development. Although the Aux/IAA gene family has been identified in many plants, within allotetraploid Brassica napus little is known. RESULTS: In this study, a total of 119 Aux/IAA genes were found in the genome of B. napus. They were distributed non-randomly across all 19 chromosomes and other non-anchored random scaffolds, with a symmetric distribution in the A and C subgenomes...
November 16, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29132315/comprehensive-genomic-analysis-of-the-cngc-gene-family-in-brassica-oleracea-novel-insights-into-synteny-structures-and-transcript-profiles
#4
Kaleem U Kakar, Zarqa Nawaz, Khadija Kakar, Essa Ali, Abdulwareth A Almoneafy, Raqeeb Ullah, Xue-Liang Ren, Qing-Yao Shu
BACKGROUND: The cyclic nucleotide-gated ion channel (CNGC) family affects the uptake of cations, growth, pathogen defence, and thermotolerance in plants. However, the systematic identification, origin and function of this gene family has not been performed in Brassica oleracea, an important vegetable crop and genomic model organism. RESULTS: In present study, we identified 26 CNGC genes in B. oleracea genome, which are non-randomly localized on eight chromosomes, and classified into four major (I-IV) and two sub-groups (i...
November 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29128880/the-immunophilin-repertoire-of-plasmodiophora-brassicae-and-functional-analysis-of-pbcyp3-cyclophilin
#5
Khushwant Singh, Georgios Tzelepis, Miloslav Zouhar, Pavel Ryšánek, Christina Dixelius
Plasmodiophora brassicae is a soil-borne pathogen that belongs to Rhizaria, an almost unexplored eukaryotic organism group. This pathogen requires a living host for growth and multiplication, which makes molecular analysis further complicated. To broaden our understanding of a plasmodiophorid such as P. brassicae, we here chose to study immunophilins, a group of proteins known to have various cellular functions, including involvement in plant defense and pathogen virulence. Searches in the P. brassicae genome resulted in 20 putative immunophilins comprising of 11 cyclophilins (CYPs), 7 FK506-binding proteins (FKBPs) and 2 parvulin-like proteins...
November 11, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/29126060/selenium-treatment-differentially-affects-sulfur-metabolism-in-high-and-low-glucosinolate-producing-cultivars-of-broccoli-brassica-oleracea-l
#6
Marian J McKenzie, Ronan K Y Chen, Susanna Leung, Srishti Joshi, Paula E Rippon, Nigel I Joyce, Michael T McManus
The effect of selenium (Se) application on the sulfur (S)-rich glucosinolate (GSL)-containing plant, broccoli (Brassica oleracea L. var. italica) was examined with a view to producing germplasm with increased Se and GSL content for human health, and to understanding the influence of Se on the regulation of GSL production. Two cultivars differing in GSL content were compared. Increased Se application resulted in an increase in Se uptake in planta, but no significant change in total S or total GSL content in either cultivar...
October 31, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29112318/antimicrobial-activity-of-broccoli-brassica-oleracea-var-italica-cultivar-avenger-against-pathogenic-bacteria-phytopathogenic-filamentous-fungi-and-yeast
#7
R D Pacheco-Cano, R Salcedo-Hernández, J E López-Meza, D K Bideshi, J E Barboza-Corona
AIMS: The objective of this study was to show whether the edible part of broccoli has antibacterial and antifungal activity against microorganism of importance in human health and vegetable spoilage, and to test if this effect was partially due to antimicrobial peptides. METHODS AND RESULTS: Crude extracts were obtained from florets and stems of broccoli cultivar Avenger and the inhibitory effect was demonstrated against pathogenic bacteria (Bacillus cereus, Staphylococcus xylosus, S...
November 7, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29096605/genome-wide-identification-and-expression-analysis-of-calmodulin-like-cml-genes-in-chinese-cabbage-brassica-rapa-l-ssp-pekinensis
#8
Shanshan Nie, Minjuan Zhang, Lugang Zhang
BACKGROUND: Calmodulin-like (CML) proteins are a primary family of plant-specific Ca(2+) sensors that specifically bind to Ca(2+) and deliver a Ca(2+) signal. CML proteins have been identified and characterized in many plant species, such as the model plant Arabidopsis and rice. Based on considerable evidence, the roles of CML proteins are crucial in plant growth and development and in the response to various external stimuli. Nevertheless, the characterization and expression profiling of CML genes in Chinese cabbage (Brassica rapa L...
November 2, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29089948/flowering-time-gene-variation-in-brassica-species-shows-evolutionary-principles
#9
Sarah V Schiessl, Bruno Huettel, Diana Kuehn, Richard Reinhardt, Rod J Snowdon
Flowering time genes have a strong influence on successful reproduction and life cycle adaptation. However, their regulation is highly complex and only well understood in diploid model systems. For crops with a polyploid background from the genus Brassica, data on flowering time gene variation are scarce, although indispensable for modern breeding techniques like marker-assisted breeding. We have deep-sequenced all paralogs of 35 Arabidopsis thaliana flowering regulators using Sequence Capture followed by Illumina sequencing in two selected accessions of the vegetable species Brassica rapa and Brassica oleracea, respectively...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29089926/impact-of-synergistic-association-of-zno-nanorods-and-symbiotic-fungus-piriformospora-indica-dsm-11827-on-brassica-oleracea-var-botrytis-broccoli
#10
Uma Singhal, Manika Khanuja, Ram Prasad, Ajit Varma
In the present work, novel nanotool called 'nano-embedded fungus' formed by impact of synergistic association of ZnO-nanorods and fungus Piriformospora indica DSM 11827, for growth of Brassica oleracea var. botrytis (Broccoli) is reported. ZnO-nanorods were synthesized by mechanical assisted thermal decomposition process and characterized by scanning electron microscopy (SEM) for morphology, X-ray diffraction for structural studies and UV-vis absorption spectroscopy for band gap determination. Nanoembedded fungus is prepared by optimizing ZnO-nanorods concentration (500 ppm) which resulted in the increased biomass of P...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29078019/affinity-proteomics-reveals-extensive-phosphorylation-of-the-brassica-chromosome-axis-protein-asy1-and-a-network-of-associated-proteins-at-prophase-i-of-meiosis
#11
Kim Osman, Jianhua Yang, Elisabeth Roitinger, Christophe Lambing, Stefan Heckmann, Elaine Howell, Maria Cuacos, Richard Imre, Gerhard Dürnberger, Karl Mechtler, Sue Armstrong, F Chris H Franklin
During meiosis, formation of crossovers (COs) generates genetic variation and provides physical links essential for accurate chromosome segregation. COs occur in the context of a proteinaceous chromosome axis. The transcriptomes and proteomes of anthers and meiocytes comprise several thousand genes and proteins but due to the level of complexity relatively few have been functionally characterised. Understanding of the physical and functional interactions between meiotic proteins is also limited. Here we use affinity proteomics to analyse the proteins that are associated with the meiotic chromosome axis protein, ASY1, in Brassica oleracea anthers and meiocytes...
October 27, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29075281/leptosphaeria-maculans-alters-glucosinolate-profiles-in-blackleg-disease-resistant-and-susceptible-cabbage-lines
#12
Arif Hasan Khan Robin, Go-Eun Yi, Rawnak Laila, Mohammad Rashed Hossain, Jong-In Park, Hye R Kim, Ill-Sup Nou
Blackleg, a fungal disease caused by Leptosphaeria maculans, is one of the most devastating diseases of Brassica crops worldwide. Despite notable progress elucidating the roles of glucosinolates in pathogen defense, the complex interaction between B. oleracea (cabbage) and L. maculans infection that leads to the selective induction of genes involved in glucosinolate production and subsequent modulation of glucosinolate profiles remains to be fully understood. The current study was designed to identify glucosinolate-biosynthesis genes induced by L...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29069139/elemental-composition-of-vegetables-cultivated-over-coal-mining-waste
#13
Jairo J Zocche, Paula Rohr, Adriani P Damiani, Daniela D Leffa, Miriam C Martins, Caroline M Zocche, Karina O Teixeira, Gabriela D Borges, Maiellen M DE Jesus, Carla E I Dos Santos, Johnny F Dias, Vanessa M DE Andrade
We assessed elemental composition of the liver in mice subjected to one-time or chronic consumption of the juice of vegetables cultivated in a vegetable garden built over deposits of coal waste. Lactuca sativa L. (lettuce), Beta vulgaris L. (beet), Brassica oleracea L. var. italica (broccoli) and Brassica oleracea L. var. acephala (kale) were collected from the coal-mining area and from a certified organic farm (control). Elemental composition was analyzed by particle-induced X-ray emission (PIXE) method. Concentrations of Mg, S, and Ca of mice subjected to one-time consumption of broccoli and concentrations of these same elements plus Si of mice receiving kale were higher in the coal-mining area...
October 23, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29068710/efficacy-of-combination-treatment-with-sodium-metasilicate-and-sodium-hypochlorite-for-inactivation-of-norovirus-on-fresh-vegetables
#14
Ji-Hyoung Ha, Sung Hyun Kim, Hee-Min Lee, Su-Ji Kim, Hae-Won Lee
In recent years, fresh vegetables have frequently been associated with the foodborne transmission of enteric viruses, such as human norovirus (NoV). Therefore, several studies have focused on developing methods to inactivate foodborne viruses for preventing outbreaks of foodborne illnesses. Sodium hypochlorite (NaOCl) is commonly used as a disinfectant, but results in undesirable effects on the appearance and taste of foods and can generate toxic byproducts when it exceeds the allowable concentration. Here, we evaluated the efficacy of a range of NaOCl concentrations (50-1000 ppm) for reducing the amounts of human NoV (NoV GII...
October 25, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29061199/sulfur-fertilization-increases-defense-metabolites-and-nitrogen-but-decreases-plant-resistance-against-a-host-specific-insect
#15
N A Santos, N C Teixeira, J O S Valim, E F A Almeida, M G A Oliveira, W G Campos
We tested the sulfur-modulated plant resistance hypothesis using potted cabbage (Brassica oleracea var. capitata) plants that were grown without and with increasing levels of sulfur fertilization. Changes in plant chemical traits were assessed and developmental performance of Plutella xylostella, a highly host-specific leaf-chewing insect, was followed. Leaf sulfur concentration gradually increased with growing addition of sulfur in soil; however, there was a generalized saturation response curve, with a plateau phase, for improvements in total leaf nitrogen, defense glucosinolates and insect performance...
October 24, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/29058468/screening-and-identification-of-major-phytochemical-compounds-in-seeds-sprouts-and-leaves-of-tuscan-black-kale-brassica-oleracea-l-ssp-acephala-dc-var-sabellica-l
#16
Lucia Giorgetti, Gianluca Giorgi, Edoardo Cherubini, Pier Giovanni Gervasi, Clara Maria Della Croce, Vincenzo Longo, Lorenza Bellani
We report the spectrophotometric determination of total polyphenols, flavonoids, glucosinolates and antioxidant activity in seeds, seedlings and leaves of Tuscan black kale. The highest content of phytochemicals was observed in 10 days sprouts and antioxidant activity was maximum in 2, 4 days seedlings. Identification and characterisation of phytochemicals were performed by mass spectrometry (MS), high resolution and tandem MS with electrospray ionisation mode. Low-molecular-weight metabolites were evidenced in seeds while metabolites at high m/z range were detected in cotyledons and leaves...
October 23, 2017: Natural Product Research
https://www.readbyqxmd.com/read/29052190/mapping-of-histone-modifications-in-plants-by-tandem-mass-spectrometry
#17
Walid Mahrez, Lars Hennig
To get an insight into the mechanisms of gene expression regulation in eukaryotic organisms, it is necessary to decipher the connection between the different chemical modifications occurring on the chromatin, at both the DNA and the associated histone proteins. Histones are basic proteins, which pack the DNA into nucleosomes, and are hot spots for several posttranslational modifications. Elucidating combinatorial histone modifications co-occurring on the same histone protein will greatly contribute to our understanding of the mechanisms involved in the development of eukaryotes...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29043585/evaluation-of-leafy-vegetables-as-bioindicators-of-gaseous-mercury-pollution-in-sewage-irrigated-areas
#18
Shun-An Zheng, Zeying Wu, Chun Chen, Junfeng Liang, Hongkun Huang, Xiangqun Zheng
Mercury (Hg) can evaporate and enter the plants through the stomata of plant leaves, which will cause a serious threat to local food safety and human health. For the risk assessment, this study aimed to investigate the concentration and accumulation of total gaseous mercury (TGM) in five typical leafy vegetables (Chinese chives (Allium tuberosum Rottler), amaranth (Amaranthus mangostanus L.), rape (Brassica campestris L.), lettuce (Lactuca sativa L.), and spinach (Spinacia oleracea L.)) grown on sewage-irrigated areas in Tianjin, China...
October 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29037676/optimization-of-extraction-yield-and-antioxidant-properties-of-brassica-oleracea-convar-capitata-var-l-leaf-extracts
#19
Haq Nawaz, Muhammad Aslam Shad, Ayesha Rauf
Effects of extraction time and solvent polarity on antioxidant properties of Brassica oleracea leaves were optimized by response surface methodology using a central composite design. Five extraction times (12, 24, 36, 48 and 60h) and solvent polarities (dipole moment - hexane: 0.0, diethyl ether: 2.80, ethyl acetate: 4.40, methanol: 5.10 and water: 9.0D) were selected for optimization. Response surface analysis of data showed a significant increase (p<0.05) in extract yield and antioxidant potential, based on total phenolic acids, reducing abilities and free radical scavenging capacities, in response to an increase in extraction time and solvent polarity...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29025408/synteny-analysis-of-genes-and-distribution-of-loci-controlling-oil-content-and-fatty-acid-profile-based-on-qtl-alignment-map-in-brassica-napus
#20
Nadia Raboanatahiry, Hongbo Chao, Liangxing Guo, Jianping Gan, Jun Xiang, Mingli Yan, Libin Zhang, Longjiang Yu, Maoteng Li
BACKGROUND: Deciphering the genetic architecture of a species is a good way to understand its evolutionary history, but also to tailor its profile for breeding elite cultivars with desirable traits. Aligning QTLs from diverse population in one map and utilizing it for comparison, but also as a basis for multiple analyses assure a stronger evidence to understand the genetic system related to a given phenotype. RESULTS: In this study, 439 genes involved in fatty acid (FA) and triacylglycerol (TAG) biosyntheses were identified in Brassica napus...
October 12, 2017: BMC Genomics
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