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https://www.readbyqxmd.com/read/29151161/fluorescent-pseudomonads-pursue-media-dependent-strategies-to-inhibit-growth-of-pathogenic-verticillium-fungi
#1
Kai Nesemann, Susanna A Braus-Stromeyer, Rebekka Harting, Annalena Höfer, Harald Kusch, Alinne Batista Ambrosio, Christian Timpner, Gerhard H Braus
Verticillium species represent economically important phytopathogenic fungi with bacteria as natural rhizosphere antagonists. Growth inhibition patterns of Verticillium in different media were compared to saprophytic Aspergillus strains and were significantly more pronounced in various co-cultivations with different Pseudomonas strains. The Brassica napus rhizosphere bacterium Pseudomonas fluorescens DSM8569 is able to inhibit growth of rapeseed (Verticillium longisporum) or tomato (Verticillium dahliae) pathogens without the potential for phenazine or 2,4-diacetylphloroglucinol (DAPG) mycotoxin biosynthesis...
November 18, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29150669/genome-wide-survey-indicates-diverse-physiological-roles-of-the-turnip-brassica-rapa-var-rapa-calcium-dependent-protein-kinase-genes
#2
Qiuli Wang, Xin Yin, Qian Chen, Nan Xiang, Xudong Sun, Yunqiang Yang, Yongping Yang
Calcium-dependent protein kinases (CDPKs) as crucial sensors of calcium concentration changes play important roles in responding to abiotic and biotic stresses. In this study, 55 BrrCDPK genes, which were phylogenetically clustered into four subfamilies, were identified. Chromosome locations indicated that the CDPK family in turnip expanded by segmental duplication and genome rearrangement. Moreover, gene expression profiles showed that different BrrCDPKs were expressed in specific tissues or stages. Transcript levels of BrrCDPKs indicated that they were involved in abiotic and biotic stresses and that paralogs exhibited functional divergence...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150254/subcellular-distribution-and-biotransformation-of-phenanthrene-in-pakchoi-after-inoculation-with-endophytic-pseudomonas-sp-as-probed-using-hrms-coupled-with-isotope-labeling
#3
Kai Sun, Mussie Y Habteselassie, Juan Liu, Shunyao Li, Yanzheng Gao
Contamination of food-crops with polycyclic aromatic hydrocarbons (PAHs) poses a grave concern to food safety, especially when PAHs are internalized. We have demonstrated in our previous study that inoculation of crop with a phenanthrene-degrading endophytic Pseudomonas sp. Ph6-gfp could overcome this problem. Here, the subcellular distribution and biotransformation mechanism of phenanthrene in pakchoi (Brassica chinensis L.) seedlings with inoculation of Ph6-gfp were further investigated both in vitro and in vivo...
November 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29149798/reconstructing-biosynthetic-pathway-of-the-plant-derived-cancer-chemopreventive-precursor-glucoraphanin-in-escherichia-coli
#4
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
#5
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
#6
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/29145809/genome-wide-characterization-and-expression-profiling-of-pdi-family-gene-reveals-function-as-abiotic-and-biotic-stress-tolerance-in-chinese-cabbage-brassica-rapa-ssp-pekinensis
#7
Md Abdul Kayum, Jong-In Park, Ujjal Kumar Nath, Gopal Saha, Manosh Kumar Biswas, Hoy-Taek Kim, Ill-Sup Nou
BACKGROUND: Protein disulfide isomerase (PDI) and PDI-like proteins contain thioredoxin domains that catalyze protein disulfide bond, inhibit aggregation of misfolded proteins, and function in isomerization during protein folding in endoplasmic reticulum and responses during abiotic stresses.Chinese cabbage is widely recognized as an economically important, nutritious vegetable, but its yield is severely hampered by various biotic and abiotic stresses. Because of, it is prime need to identify those genes whose are responsible for biotic and abiotic stress tolerance...
November 16, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29142402/chromosomal-fragmentation-a-possible-marker-for-the-selection-of-high-gymnemic-acid-yielding-accessions-of-gymnema-sylvestre-r-br
#8
Ashutosh Kumar Verma, Sunita Singh Dhawan
Background: Gymnema sylvestre R. Br. a member of family Asclepiadaceae as mentioned in Indian Pharmacopoeia popular among the researchers because of stimulatory effect of its phytoconstituent on pancreatic cells and potential to treat Type I and II type of diabetes. Objectives: Development of cost-effective marker system for the selection of high gymnemic acid yielding accessions of G. sylvestre. Materials and Methods: Presoaked seeds of Brassica campestris treated with different dilutions of gymnemagenin and 10% leaf extract of twenty different accessions of G...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29141039/identification-of-isolates-of-the-plant-pathogen-leptosphaeria-maculans-with-resistance-to-the-triazole-fungicide-fluquinconazole-using-a-novel-in-planta-assay
#9
Angela P Van de Wouw, Vicki L Elliott, Steven Chang, Francisco J López-Ruiz, Steven J Marcroft, Alexander Idnurm
Leptosphaeria maculans is the major pathogen of canola (oilseed rape, Brassica napus) worldwide. In Australia, the use of azole fungicides has contributed to the 50-fold increase in canola production in the last 25 years. However, extensive application of fungicides sets the stage for the selection of fungal populations with resistance. A high-throughput in planta assay was developed to allow screening of thousands of isolates from multiple populations. Using this screen, isolates were identified with decreased sensitivity to the fungicide fluquinconazole when applied at field rates as a protective seed dressing: these isolates cause significantly larger lesions on cotyledons and true leaves and increased disease severity at plant maturity...
2017: PloS One
https://www.readbyqxmd.com/read/29138433/transcriptomic-analysis-of-the-regulation-of-stalk-development-in-flowering-chinese-cabbage-brassica-campestris-by-rna-sequencing
#10
Xinmin Huang, Yuling Lei, Hongling Guan, Yanwei Hao, Houcheng Liu, Guangwen Sun, Riyuan Chen, Shiwei Song
Flowering Chinese cabbage is a stalk vegetable whose quality and yield are directly related to stalk development. However, no comprehensive investigations on stalk development have been performed. To address this issue, the present study used RNA sequencing to investigate transcriptional regulation at three key stages (seedling, bolting, and flowering) of stalk development in flowering Chinese cabbage. Anatomical analysis revealed that cell division was the main mode of stalk thickening and elongation at all key stages...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29134463/stir-frying-of-chinese-cabbage-and-pakchoi-retains-health-promoting-glucosinolates
#11
Probo Y Nugrahedi, Teresa Oliviero, Jenneke K Heising, Matthijs Dekker, Ruud Verkerk
Stir-frying is a cooking method, originating from Asia, in which food is fried in small amount of very hot oil. Nowadays in many other parts of the world stir-frying is a very popular method to prepare vegetables, because it is fast and fried vegetables are tasty. However, the retention of phytochemicals like the health-beneficial glucosinolates in Brassica vegetables is less explored for stir-frying in comparison to other cooking methods. This study investigates the retention of glucosinolates in Chinese cabbage (Brassica rapa ssp...
November 13, 2017: Plant Foods for Human Nutrition
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
#12
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/29132002/brassica-napus-has-a-key-role-in-the-recovery-of-the-health-of-soils-contaminated-with-metals-and-diesel-by-rhizoremediation
#13
Rafael G Lacalle, María T Gómez-Sagasti, Unai Artetxe, Carlos Garbisu, José M Becerril
Contaminated soils are frequently characterized by the simultaneous presence of organic and inorganic contaminants, as well as a poor biological and nutritional status. Rhizoremediation, the combined use of phytoremediation and bioremediation, has been proposed as a Gentle Remediation Option to rehabilitate multi-contaminated soils. Recently, newer techniques, such as the application of metallic nanoparticles, are being deployed in an attempt to improve traditional remediation options. In order to implement a phytomanagement strategy on calcareous alkaline peri-urban soils simultaneously contaminated with several metals and diesel, we evaluated the effectiveness of Brassica napus L...
November 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29128943/effects-of-biochar-on-phytotoxicity-and-translocation-of-polybrominated-diphenyl-ethers-in-ni-fe-bimetallic-nanoparticle-treated-soil
#14
Juan Wu, Yunqiang Yi, Zhanqiang Fang, Eric Pokeung Tsang
In this study, soil culture experiments were conducted to explore the effects of biochar-supported Ni/Fe nanoparticles on the accumulation and translocation of polybrominated diphenyl ethers (PBDEs) in soil-plant system and its phytotoxicity to Brassica chinensis. Compared with those in BDE209 contaminated soils (S 1) and Ni/Fe nanoparticle-treated soil (S 3), the plant biomass, root, and shoot lengths in biochar-supported Ni/Fe nanoparticle-treated soil (S 4) were increased by 23 mg, 1.35 cm, and 2.08 cm and 27...
November 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29128880/the-immunophilin-repertoire-of-plasmodiophora-brassicae-and-functional-analysis-of-pbcyp3-cyclophilin
#15
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
#16
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/29124814/validation-of-an-updated-associative-transcriptomics-platform-for-the-polyploid-crop-species-brassica-napus-by-dissection-of-the-genetic-architecture-of-erucic-acid-and-tocopherol-isoform-variation-in-seeds
#17
Lenka Havlickova, Zhesi He, Lihong Wang, Swen Langer, Andrea L Harper, Harjeevan Kaur, Martin R Broadley, Vasilis Gegas, Ian Bancroft
An updated platform was developed to underpin association genetics studies in the polyploid crop species Brassica napus. Based on 1.92 x 10(12) bases of leaf mRNAseq data, functional genotypes, comprising 355,536 single nucleotide polymorphism markers and transcript abundance were scored across a 383-accession genetic diversity panel using a transcriptome reference comprising 116,098 ordered CDS gene models. The use of the platform for Associative Transcriptomics was first tested by analysing the genetic architecture of variation for seed erucic acid content, as high erucic rapeseed oil is highly valued for a variety of applications in industry...
November 10, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29123974/expression-profiles-of-brmyb-transcription-factors-related-to-glucosinolate-biosynthesis-and-stress-response-in-eight-subspecies-of-brassica-rapa
#18
Mi-Suk Seo, Mina Jin, Seong-Han Sohn, Jung Sun Kim
Brassica rapa is a polyploid species with phenotypically diverse cultivated subspecies. Glucosinolates (GSLs) are secondary metabolites that contribute to anticarcinogenic activity and plant defense in Brassicaceae. Previously, complete coding sequences of 13 BrMYB transcription factors (TFs) related to GSL biosynthesis were identified in the B. rapa genome. In the present study, we investigated GSL content and expression levels of these BrMYB TFs in 38 accessions belonging to eight subspecies of B. rapa. Twelve identified GSLs were detected and were classified into three chemical groups based on patterns of GSL content and expression profiles of the BrMYB TFs...
November 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/29120785/identification-and-characterization-of-pesticide-metabolites-in-brassica-species-by-liquid-chromatography-travelling-wave-ion-mobility-quadrupole-time-of-flight-mass-spectrometry-uplc-twims-qtof-ms
#19
Anna Bauer, Jens Luetjohann, Franziska S Hanschen, Monika Schreiner, Jürgen Kuballa, Eckard Jantzen, Sascha Rohn
A new mass spectrometric method for evaluating metabolite formation of the pesticides thiacloprid, azoxystrobin, and difenoconazole was developed for the Brassica species pak choi and broccoli. Both, distribution and transformation kinetics of the active compounds and their metabolites were analyzed by UPLC-TWIMS-QTOF-MS. Additionally, HR-MS analysis and structure elucidation tools such as diagnostic ions, isotopic matches, and collision cross sections were applied for metabolites identification. Following the application of two plant protection products (containing the above-mentioned active compounds) in a greenhouse study plant material was cryo-milled and extracted with water/methanol...
April 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29119366/fine-mapping-and-candidate-gene-analysis-of-the-brassica-juncea-white-flowered-mutant-bjpc2-using-the-whole-genome-resequencing
#20
Xiangxiang Zhang, Rihui Li, Li Chen, Sailun Niu, Lei Chen, Jie Gao, Jing Wen, Bin Yi, Chaozhi Ma, Jingxing Tu, Tingdong Fu, Jinxiong Shen
Flower color in Brassica spp. is an important trait and considered a major visual signal for insect-pollinated plants. In previous study, we isolated and identified two genes (BjPC1 and BjPC2) that control the flower color in B. juncea, and mapped BjPC1 to a 0.13-cM region. In this study, we report the fine-mapping and candidate analysis of BjPC2. We conducted whole-genome resequencing, using bulked segregant analysis (BSA) to determine the BjPC2 candidate intervals. Crossing, allelism testing, and repeated full-sib mating were used to generate XG3, a near isogenic line (NIL) population that segregated on the BjPC2 locus...
November 8, 2017: Molecular Genetics and Genomics: MGG
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