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https://www.readbyqxmd.com/read/28210266/a-phylogenetic-analysis-of-chloroplast-genomes-elucidates-the-relationships-of-the-six-economically-important-brassica-species-comprising-the-triangle-of-u
#1
Peirong Li, Shujiang Zhang, Fei Li, Shifan Zhang, Hui Zhang, Xiaowu Wang, Rifei Sun, Guusje Bonnema, Theo J A Borm
The Brassica genus comprises many economically important worldwide cultivated crops. The well-established model of the Brassica genus, U's triangle, consists of three basic diploid plant species (Brassica rapa, Brassica oleracea, and Brassica nigra) and three amphidiploid species (Brassica napus, Brassica juncea, and Brassica carinata) that arose through interspecific hybridizations. Despite being extensively studied because of its commercial relevance, several aspects of the origin of the Brassica species and the relationships within and among these six species still remain open questions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28208739/a-guide-to-the-variability-of-flavonoids-in-brassica-oleracea
#2
REVIEW
Vera Mageney, Susanne Neugart, Dirk C Albach
Flavonoids represent a typical secondary metabolite class present in cruciferous vegetables. Their potential as natural antioxidants has raised considerable scientific interest. Impacts on the human body after food consumption as well as their effect as pharmaceutical supplements are therefore under investigation. Their numerous physiological functions make them a promising tool for breeding purposes. General methods for flavonoid analysis are well established, though new compounds are still being identified...
February 8, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28198821/the-microbe-secreted-isopeptide-poly-%C3%AE-glutamic-acid-induces-stress-tolerance-in-brassica-napus-l-seedlings-by-activating-crosstalk-between-h2o2-and-ca-2
#3
Peng Lei, Xiao Pang, Xiaohai Feng, Sha Li, Bo Chi, Rui Wang, Zongqi Xu, Hong Xu
Poly-γ-glutamic acid (γ-PGA) is a microbe-secreted isopeptide that has been shown to promote growth and enhance stress tolerance in crops. However, its site of action and downstream signaling pathways are still unknown. In this study, we investigated γ-PGA-induced tolerance to salt and cold stresses in Brassica napus L. seedlings. Fluorescent labeling of γ-PGA was used to locate the site of its activity in root protoplasts. The relationship between γ-PGA-induced stress tolerance and two signal molecules, H2O2 and Ca(2+), as well as the γ-PGA-elicited signaling pathway at the whole plant level, were explored...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28197856/determination-of-substrate-preferences-for-desaturases-and-elongases-for-production-of-docosahexaenoic-acid-from-oleic-acid-in-engineered-canola
#4
Jenny Lindberg Yilmaz, Ze Long Lim, Mirela Beganovic, Steven Breazeale, Carl Andre, Sten Stymne, Patricia Vrinten, Toralf Senger
Production of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in plant seed oils has been pursued to improve availability of these omega-3 fatty acids that provide important human health benefits. Canola (Brassica napus), through the introduction of 10 enzymes, can convert oleic acid (OLA) into EPA and ultimately DHA through a pathway consisting of two elongation and five desaturation steps. Herein we present an assessment of the substrate specificity of the seven desaturases and three elongases that were introduced into canola by expressing individual proteins in yeast...
February 14, 2017: Lipids
https://www.readbyqxmd.com/read/28196349/effects-of-low-sink-demand-on-leaf-photosynthesis-under-potassium-deficiency
#5
Yonghui Pan, Zhifeng Lu, Jianwei Lu, Xiaokun Li, Rihuan Cong, Tao Ren
The interaction between low sink demand and potassium (K) deficiency in leaf photosynthesis was not intensively investigated, therefore this interaction was investigated in winter oilseed rape (Brassica napus L.). Plants subjected to sufficient (+K) or insufficient (-K) K supply treatments were maintained or removed their flowers and pods; these conditions were defined as high sink demand (HS) or low sink demand (LS), respectively. The low sink demand induced a lower photosynthetic rate (Pn), especially in the -K treatment during the first week...
February 1, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28188274/spatial-and-temporal-mapping-of-key-lipid-species-in-brassica-napus-seeds
#6
Helen K Woodfield, Drew Sturtevant, Ljudmilla Borisjuk, Eberhard Munz, Irina A Guschina, Kent D Chapman, John L Harwood
The regulation of lipid synthesis in oil seeds is still not fully understood. Oilseed rape is the third most productive vegetable oil crop on the global market. Therefore, increasing our understanding of lipid accumulation in oilseed rape seeds is of great economic, as well as intellectual, importance. Matrix-assisted laser/desorption ionisation - mass spectrometry imaging (MALDI-MSI) is a technique that allows the mapping of metabolites directly onto intact biological tissues, giving a spatial context to metabolism...
February 10, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28185156/imi-resistance-associated-to-crop-weed-hybridization-in-a-natural-brassica-rapa-population-characterization-and-fate
#7
M S Ureta, F Torres Carbonell, C Pandolfo, A D Presotto, M A Cantamutto, M Poverene
Wild turnip (Brassica rapa) is a common weed and a close relative to oilseed rape (Brassica napus). The Clearfield® production system is a highly adopted tool which provides an alternative solution for weed management, but its efficiency is threatened by gene transfer from crop to weed relatives. Crop-weed hybrids with herbicide resistance were found in the progeny of a B. rapa population gathered from a weedy stand on the borders of an oilseed rape (B. napus) imidazolinone (IMI)-resistant crop. Interspecific hybrids were confirmed by morphological traits in the greenhouse and experimental field, survival after imazethapyr applications, DNA content through flow cytometry, and pollen viability...
March 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28185045/identification-and-in-silico-analysis-of-major-redox-modulated-proteins-from-brassica-juncea-seedlings-using-2d-redox-sds-page-2-dimensional-diagonal-redox-sodium-dodecyl-sulfate-polyacrylamide-gel-electrophoresis
#8
Satya Prakash Chaurasia, Renu Deswal
The thiol-disulphide exchange regulates the activity of proteins by redox modulation. Many studies to analyze reactive oxygen species (ROS), particularly, hydrogen peroxide (H2O2) induced changes in the gene expression have been reported, but efforts to detect H2O2 modified proteins are comparatively few. Two-dimensional diagonal redox sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS PAGE) was used to detect polypeptides which undergo thiol-disulphide exchange in Brassica juncea seedlings following H2O2 (10 mM) treatment for 30 min...
February 9, 2017: Protein Journal
https://www.readbyqxmd.com/read/28184233/overexpression-of-the-novel-arabidopsis-gene-at5g02890-alters-inflorescence-stem-wax-composition-and-affects-phytohormone-homeostasis
#9
Liping Xu, Viktoria Zeisler, Lukas Schreiber, Jie Gao, Kaining Hu, Jing Wen, Bin Yi, Jinxiong Shen, Chaozhi Ma, Jinxing Tu, Tingdong Fu
The cuticle is composed of cutin and cuticular wax. It covers the surfaces of land plants and protects them against environmental damage. At5g02890 encodes a novel protein in Arabidopsis thaliana. In the current study, protein sequence analysis showed that At5g02890 is highly conserved in the Brassicaceae. Arabidopsis lines overexpressing At5g02890 (OE-At5g02890 lines) and an At5g02890 orthologous gene from Brassica napus (OE-Bn1 lines) exhibited glossy stems. Chemical analysis revealed that overexpression of At5g02890 caused significant reductions in the levels of wax components longer than 28 carbons (C28) in inflorescence stems, whereas the levels of wax molecules of chain length C28 or shorter were significantly increased...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28184229/bnsip1-1-a-trihelix-family-gene-mediates-abiotic-stress-tolerance-and-aba-signaling-in-brassica-napus
#10
Junling Luo, Shaohua Tang, Fengling Mei, Xiaojue Peng, Jun Li, Xiaofei Li, Xiaohong Yan, Xinhua Zeng, Fang Liu, Yuhua Wu, Gang Wu
The trihelix family genes have important functions in light-relevant and other developmental processes, but their roles in response to adverse environment are largely unclear. In this study, we identified a new gene, BnSIP1-1, which fell in the SIP1 (6b INTERACTING PROTEIN1) clade of the trihelix family with two trihelix DNA binding domains and a fourth amphipathic α-helix. BnSIP1-1 protein specifically targeted to the nucleus, and its expression can be induced by abscisic acid (ABA) and different stresses...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28179909/genome-wide-identification-and-characterization-of-spx-domain-containing-members-and-their-responses-to-phosphate-deficiency-in-brassica-napus
#11
Hongyuan Du, Chang Yang, Guangda Ding, Lei Shi, Fangsen Xu
The importance of SPX domain-encoding proteins to phosphate (Pi) homeostasis and signaling pathways has been well-documented in rice and Arabidopsis. However, global information and responses of SPX members to P stress in allotetraploid Brassica napus, one of the world's major oil crops that is sensitive to P deficiency, remain undefined. We identified a total of 69 SPX domain-containing genes in the B. napus genome. Based on the domain organizations, these genes were classified into four distinct subfamilies-SPX (11), SPX-EXS (43), SPX-MFS (8), and SPX-RING (7)-that represented clear orthologous relationships to their family members in Arabidopsis...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28177832/natural-variation-in-i-circadian-clock-associated-1-i-is-associated-with-flowering-time-in-i-brassica-rapa-i
#12
Hankuil Yi, Xiaonan Li, Seong Ho Lee, Ill-Sup Nou, Yong Pyo Lim, Yoonkang Hur
Flowering time is a very important agronomic trait and the development of molecular markers associated with this trait can facilitate crop breeding. <i>CIRCADIAN CLOCK ASSOCIATED 1</i> (<i>CCA1</i>), a core oscillator component of circadian rhythms that affect metabolic pathways in plants, has been implicated in flowering time control in <i>Brassica</i> species. <i>CCA1</i> gene sequences from three <i>Brassica rapa</i> inbred lines, showing either early flowering or late flowering phenotypes, were analyzed and a high level of ets were designed and tested using various inbred lines of <i>B...
December 22, 2016: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28169083/evaluation-of-biochar-amended-biosolids-co-composting-to-improve-the-nutrient-transformation-and-its-correlation-as-a-function-for-the-production-of-nutrient-rich-compost
#13
Mukesh Kumar Awasthi, Quan Wang, Hongyu Chen, Meijing Wang, Xiuna Ren, Junchao Zhao, Jiao Li, Di Guo, Dong-Sheng Li, Sanjeev Kumar Awasthi, Xining Sun, Zengqiang Zhang
The influence of biochar amended dewatered fresh sewage sludge (DFSS)-wheat straw co-composting on nutrients transformation and end products quality was investigated. This is the first study to examine the biochar applied compost quality with different kgha(-1) TKN on Brassica rapa L. growth. Seven mixtures were composted over 8-weeks period in 130-L reactor using the same DFSS with different concentration of biochar (2%, 4%, 6%, 8%, 12% and 18% on dry weight basis) and without additive added treatment served as control...
January 26, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28167029/functional-characterization-of-the-bnnced3-gene-in-brassica-napus
#14
Peipei Xu, Weiming Cai
Abscisic acid (ABA) has been implicated in plant adaptation to various environmental stresses and the regulation of seed dormancy, leaf senescence and organ abscission progression. The cleavage of cis-epoxycarotenoids by 9-cis-epoxycarotenoid dioxygenase (NCED) family proteins is a critical step in the regulation of abscisic acid (ABA) synthesis in plants. In the present study, the NCED family gene BnNCED3 was isolated from Brassica napus. BnNCED3 encodes a 592-amino acid protein with high amino acid sequence similarity to the Arabidopsis AtNCED3 protein...
March 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28166280/survey-of-the-rubber-tree-genome-reveals-a-high-number-of-cysteine-protease-encoding-genes-homologous-to-arabidopsis-sag12
#15
Zhi Zou, Jianting Liu, Lifu Yang, Guishui Xie
Arabidopsis thaliana SAG12, a senescence-specific gene encoding a cysteine protease, is widely used as a molecular marker for the study of leaf senescence. To date, its potential orthologues have been isolated from several plant species such as Brassica napus and Nicotiana tabacum. However, little information is available in rubber tree (Hevea brasiliensis), a rubber-producing plant of the Euphorbiaceae family. This study presents the identification of SAG12-like genes from the rubber tree genome. Results showed that an unexpected high number of 17 rubber orthologues with a single intron were found, contrasting the single copy with two introns in Arabidopsis...
2017: PloS One
https://www.readbyqxmd.com/read/28165502/post-polyploidisation-morphotype-diversification-associates-with-gene-copy-number-variation
#16
Sarah Schiessl, Bruno Huettel, Diana Kuehn, Richard Reinhardt, Rod Snowdon
Genetic models for polyploid crop adaptation provide important information relevant for future breeding prospects. A well-suited model is Brassica napus, a recent allopolyploid closely related to Arabidopsis thaliana. Flowering time is a major adaptation trait determining life cycle synchronization with the environment. Here we unravel natural genetic variation in B. napus flowering time regulators and investigate associations with evolutionary diversification into different life cycle morphotypes. Deep sequencing of 35 flowering regulators was performed in 280 diverse B...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28164997/genome-wide-indel-ssr-scanning-reveals-significant-loci-associated-with-excellent-agronomic-traits-of-a-cabbage-brassica-oleracea-elite-parental-line-01-20
#17
Honghao Lv, Qingbiao Wang, Fengqing Han, Xing Liu, Zhiyuan Fang, Limei Yang, Mu Zhuang, Yumei Liu, Zhansheng Li, Yangyong Zhang
Elite parental lines are of great significance to crop breeding. To discover unique genomic loci associated with excellent economic traits in the elite cabbage inbred-line '01-20', we performed comparisons of phenotypes as well as whole-genome insertion-deletion/simple sequence repeat loci between '01-20' and each of its five sister lines. '01-20' has a range of excellent agronomic traits, including early-maturing, and improvements in plant type and leaf colour. Eight unique loci were discovered for '01-20' and '01-07-258', another elite line similar to '01-20' at the whole-genome level...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28163599/development-and-validation-of-functional-caps-markers-for-the-fae-genes-in-brassica-juncea-and-their-use-in-marker-assisted-selection
#18
Navinder Saini, Naveen Singh, Anil Kumar, Nitika Vihan, Sangita Yadav, Sujata Vasudev, D K Yadava
Low erucic acid is a major breeding target to improve the edible oil quality in Brassica juncea. The single nucleotide polymorphism (SNP) in fatty acid elongase 1 (FAE1.1 and FAE1.2) gene was exploited to expedite the breeding program. The paralogs of FAE1 gene were sequenced from low erucic acid genotype Pusa Mustard 30 and SNPs were identified through homologous alignment with sequence downloaded from NCBI GenBank. Two SNPs in FAE1.1 at position 591 and 1265 and one in FAE1.2 at 237 were found polymorphic among low and high erucic acid genotypes...
December 2016: Breeding Science
https://www.readbyqxmd.com/read/28163323/antioxidant-tocopherol-and-canolol-content-in-rapeseed-oil-obtained-from-roasted-yellow-seeded-brassica-napus
#19
Aleksander Siger, Marzena Gawrysiak-Witulska, Iwona Bartkowiak-Broda
In this study, the effect of temperature (140, 160, 180 °C) and roasting time (5, 10, 15 min) on the bioactive compound content (canolol, tocopherol and plastochromanol-8) of cold-pressed oil from yellow-seeded rapeseed lines of different colors was investigated. Roasting increased the peroxide value in the seed oils compared to the oils from the control samples. However, roasting did not affect the acid values of the oils, which were 1.15-1.47 and 1.30-1.40 mg KOH/g, for line PN1 03/1i/14 (yellow seeds) and line PN1 563/1i/14 (brown seeds), respectively...
2017: Journal of the American Oil Chemists' Society
https://www.readbyqxmd.com/read/28160497/unusual-evolutionary-mechanisms-to-escape-effector-triggered-immunity-in-the-fungal-phytopathogen-leptosphaeria-maculans
#20
C Plissonneau, F Blaise, B Ollivier, M Leflon, J Carpezat, T Rouxel, M-H Balesdent
Leptosphaeria maculans is the fungus responsible for the stem canker disease of oilseed rape (Brassica napus). AvrLm3 and AvrLm4-7, two avirulence effector genes of L. maculans, are involved in an unusual relationship: AvrLm4-7 suppresses the Rlm3-mediated resistance. Here, we assessed AvrLm3 polymorphism in a collection of 235 L. maculans isolates. No field isolates exhibited deletion or inactivating mutations in AvrLm3, as observed for other L. maculans avirulence genes. Eleven isoforms of the AvrLm3 protein were found...
February 4, 2017: Molecular Ecology
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