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https://www.readbyqxmd.com/read/28444904/a-bell-pepper-cultivar-tolerant-to-chilling-enhanced-nitrogen-allocation-and-stress-related-metabolite-accumulation-in-the-roots-in-response-to-low-root-zone-temperature
#1
Moses Kwame Aidoo, Tal Sherman, Naftali Lazarovitch, Aaron Fait, Shimon Rachmilevitch
Two bell pepper (Capsicum annuum) cultivars, differing in their response to chilling, were exposed to three levels of root zone temperatures. Gas exchange, shoot and root phenology, and the pattern of change of the central metabolites and secondary metabolites caffeate and benzoate in the leaves and roots were profiled. Low root zone temperature significantly inhibited gaseous exchange, with a greater effect on the sensitive commercial pepper hybrid (Canon) than on the new hybrid bred to enhance abiotic stress tolerant (S103)...
April 26, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/28444217/direct-and-indirect-effects-of-pesticides-on-the-insidious-flower-bug-hemiptera-anthocoridae-under-laboratory-conditions
#2
Nathan J Herrick, Raymond A Cloyd
Greenhouse producers are interested in integrating natural enemies along with pesticides to suppress western flower thrips, Frankliniella occidentalis (Pergande), populations. The insidious flower bug, Orius insidiosus (Say), is a commercially available natural enemy of western flower thrips. We conducted a series of laboratory experiments to determine the direct and indirect effects of 28 pesticides (insecticides, miticides, and fungicides), 4 pesticide mixtures, and 4 surfactants (36 total treatments plus a water control) on the adult O...
April 21, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28443105/identification-of-microrna-targets-of-capsicum-spp-using-mirtrans-a-trans-omics-approach
#3
Lu Zhang, Cheng Qin, Junpu Mei, Xiaocui Chen, Zhiming Wu, Xirong Luo, Jiaowen Cheng, Xiangqun Tang, Kailin Hu, Shuai C Li
The microRNA (miRNA) can regulate the transcripts that are involved in eukaryotic cell proliferation, differentiation, and metabolism. Especially for plants, our understanding of miRNA targets, is still limited. Early attempts of prediction on sequence alignments have been plagued by enormous false positives. It is helpful to improve target prediction specificity by incorporating the other data sources such as the dependency between miRNA and transcript expression or even cleaved transcripts by miRNA regulations, which are referred to as trans-omics data...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28443083/intracellular-localization-interactions-and-functions-of-capsicum-chlorosis-virus-proteins
#4
Shirani M K Widana Gamage, Ralf G Dietzgen
Tospoviruses are among the most devastating viruses of horticultural and field crops. Capsicum chlorosis virus (CaCV) has emerged as an important pathogen of capsicum and tomato in Australia and South-east Asia. Present knowledge about CaCV protein functions in host cells is lacking. We determined intracellular localization and interactions of CaCV proteins by live plant cell imaging to gain insight into the associations of viral proteins during infection. Proteins were transiently expressed as fusions to autofluorescent proteins in leaf epidermal cells of Nicotiana benthamiana and capsicum...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28437556/inheritance-of-bacterial-spot-resistance-in-capsicum-annuum-var-annuum
#5
L R A Silva, R Rodrigues, S Pimenta, J W S Correa, M S B Araújo, C S Bento, C P Sudré
Since 2008, Brazil is the largest consumer of agrochemicals, which increases production costs and risks of agricultural products, environment, and farmers' contamination. Sweet pepper, which is one of the main consumed vegetables in the country, is on top of the list of the most sprayed crops. The bacterial spot, caused by Xanthomonas spp, is one of the most damaging diseases of pepper crops. Genetic resistant consists of a suitable way of disease control, but development of durable resistant cultivars as well as understanding of plant-bacterium interaction is being a challenge for plant breeders and pathologists worldwide...
April 20, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28437553/genotype-x-environment-interaction-on-experimental-hybrids-of-chili-pepper
#6
N S S Cabral, A M Medeiros, L G Neves, C P Sudré, S Pimenta, V J Coelho, M E Serafim, R Rodrigues
In Brazil, cultivation of hybrid plants comprise near 40% of the area grown with vegetables. For Capsicum, hybrids of bell and chili peppers have already exceeded 50% and over 25% of all are commercialized seeds. This study aimed to evaluate new pepper hybrids in two environments, Cáceres, MT, and Campos dos Goytacazes, RJ, Brazil. Nine experimental hybrids of C. baccatum var. pendulum were tested and trials were performed in a randomized block design, with three replications and eight plants per plot. In each environment, plants were assessed for canopy diameter, plant height, number of fruit per plant, mean fruit mass per plant, fruit length and diameter, pulp thickness, and content of soluble solids...
April 20, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28425857/antioxidant-properties-of-fractions-for-unripe-fruits-of-capsicum-annuum-l-var-conoides
#7
Chung-Yi Chen, Ching-Yu Yen, Gao-Mai Shen, Tzu-Jung Yu, Yi-Shin Liao, Ru-In Jian, Sheng-Chieh Wang, Jen-Yang Tang, H-W Chang
BACKGROUND: Capsicum plant, especially for C. annuum, is an abundant resource for bioactive antioxidants, but few studies have examined the unripe fruit part of the Capsicum plant. OBJECTIVE: MeOH extract of unripe fruits of C. annuum L. var. conoides (UFCA) was chromatographed over a silica gel column using a gradient of CH2Cl2/MeOH as eluent to produce 9 fractions. Antioxidant activities are evaluated along with cell viabilities of 9 fractions of UFCA. METHOD: The antioxidant properties were analyzed in terms of total phenol content (TPC), total flavonoid content (TFC), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, 2,2-azinobis (3-ethyl-benzothiazoline-6-sulfonic acid) (ABTS) radical scavenging, ferric reducing, and ferrous ion-chelating ability...
April 19, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28418433/capsaicin-presynaptically-inhibits-glutamate-release-through-the-activation-of-trpv1-and-calcineurin-in-the-hippocampus-of-rats
#8
Cheng Wei Lu, Tzu Yu Lin, Ting Yang Hsie, Shu Kuei Huang, Su Jane Wang
Capsaicin is the major ingredient in hot peppers of the plant Capsicum genus with neuroprotective effects in several preclinical models; its effect on glutamate release has been investigated in the rat hippocampus using isolated nerve terminals (synaptosomes) and brain slices. In a synaptosomal preparation, capsaicin dose-dependently reduced 4-aminopyridine-evoked Ca(2+)-dependent glutamate release, with an IC50 of approximately 11 μM. This inhibition was blocked by capsazepin, an antagonist of TRPV1, which was found to be colocalized with the vesicle marker protein synaptophysin in synaptosomes using double immunostaining...
April 18, 2017: Food & Function
https://www.readbyqxmd.com/read/28397347/physicochemical-and-in-vitro-antioxidant-properties-of-pectin-extracted-from-hot-pepper-capsicum-annuum-l-var-acuminatum-fingern-residues-with-hydrochloric-and-sulphuric-acids
#9
Honggao Xu, Kedong Tai, Tong Wei, Fang Yuan, Yanxiang Gao
BACKGROUND: Transformation of hot pepper residues to value-added products with concomitant benefits on environmental pollution would be a great value to the capsicum oleoresin manufacturers. Pectin, a soluble dietary fiber with multiple functions, from hot pepper residues was investigated in this study. RESULTS: The extraction of hot pepper pectin was first optimized using response surface methodology (RSM). The most efficient parameters for the maximum hot pepper pectin yield (14...
April 11, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28360861/odor-not-performance-dictates-bemisia-tabaci-s-selection-between-healthy-and-virus-infected-plants
#10
Gong Chen, Qi Su, Xiaobin Shi, Xin Liu, Zhengke Peng, Huixin Zheng, Wen Xie, Baoyun Xu, Shaoli Wang, Qingjun Wu, Xuguo Zhou, Youjun Zhang
Although, insect herbivores are generally thought to select hosts that favor the fitness of their progeny, this "mother-knows-best" hypothesis may be challenged by the presence of a plant virus. Our previous study showed that the whitefly, Bemisia tabaci, the obligate vector for transmitting Tomato yellow leaf curl virus (TYLCV), preferred to settle and oviposit on TYLCV-infected rather than healthy host plant, Datura stramonium. The performances of B. tabaci larvae and adults were indeed improved on virus-infected D...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28360386/cloning-and-expression-analysis-of-a-new-anther-specific-gene-camf4-in-capsicum-annuum
#11
Xuefeng Hao, Changming Chen, Guoju Chen, Bihao Cao, Jianjun Lei
Our previous study on the genic male sterile-fertile line 114AB of Capsicum annuum indicated a diversity of differentially expressed cDNA fragments in fertile and sterile lines. In this study, a transcript-derived fragment (TDF), male fertile 4 (CaMF4) was chosen for further investigation to observe that this specific fragment accumulates in the flower buds of the fertile line. The full genomic DNA sequence of CaMF4 was 894 bp in length, containing two exons and one intron, and the complete coding sequence encoded a putative 11...
March 2017: Journal of Genetics
https://www.readbyqxmd.com/read/28359867/plant-tissue-cultures-as-sources-of-new-ene-and-ketoreductase-activities
#12
Cynthia Magallanes-Noguera, Francisco M Cecati, María Laura Mascotti, Guillermo F Reta, Elizabeth Agostini, Alejandro A Orden, Marcela Kurina-Sanz
While many redox enzymes are nowadays available for synthetic applications, the toolbox of ene-reductases is still limited. Consequently, the screening for these enzymes from diverse sources in the search of new biocatalyst suitable for green chemistry approaches is needed. Among 13 plant tissue cultures, Medicago sativa and Tessaria absinthioides calli, as well as Capsicum annuum hairy roots, were selected due to their ability to hydrogenate the CC double bond of the model substrate 2-cyclohexene-1-one. The three axenic plant cultures showed more preference toward highly activated molecules such as nitrostyrene and maleimide rather than the classical substrates of the well-known Old Yellow Enzymes, resembling the skills of the NAD(P)H-dependent flavin-independent enzymes...
March 28, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28344584/lanthanum-affects-bell-pepper-seedling-quality-depending-on-the-genotype-and-time-of-exposure-by-differentially-modifying-plant-height-stem-diameter-and-concentrations-of-chlorophylls-sugars-amino-acids-and-proteins
#13
Atonaltzin García-Jiménez, Fernando C Gómez-Merino, Olga Tejeda-Sartorius, Libia I Trejo-Téllez
Lanthanum (La) is considered a beneficial element, capable of inducing hormesis. Hormesis is a dose-response relationship phenomenon characterized by low-dose stimulation and high-dose inhibition. Herein we tested the effect of 0 and 10 μM La on growth and biomolecule concentrations of seedlings of four sweet bell pepper (Capsicum annuum L.) varieties, namely Sven, Sympathy, Yolo Wonder, and Zidenka. Seedling evaluations were performed 15 and 30 days after treatment applications (dat) under hydroponic greenhouse conditions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28339719/the-pepper-wpp-domain-protein-cawdp1-acts-as-a-novel-negative-regulator-of-drought-stress-via-aba-signaling
#14
Chanmi Park, Woo Chae Lim, Woonhee Baek, Jung-Hyun Kim, Sohee Lim, Hyon Sang Kim, Kyung-Nam Kim, Chul Sung Lee
Plants are constantly challenged by various environmental stresses, including high salinity and drought, and they have evolved defense mechanisms to counteract the deleterious effects of these stresses. The plant hormone ABA regulates plant growth and developmental processes and mediates abiotic stress responses. Here, we report the identification and characterization of a novel CaWDP1 (Capsicum annuum) protein. The expression of CaWDP1 in pepper leaves was induced by ABA, drought and NaCl treatments, suggesting its role in the abiotic stress response...
April 1, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28330555/deciphering-the-role-of-the-phenylpropanoid-metabolism-in-the-tolerance-of-capsicum-annuum-l-to-verticillium-dahliae-kleb
#15
Marta Novo, Cristina Silvar, Fuencisla Merino, Teresa Martínez-Cortés, Fachuang Lu, John Ralph, Federico Pomar
Verticillium dahliae is an economically relevant soilborne pathogen that causes vascular wilt in several crops, including pepper (Capsicum annuum). Fungal infection is usually visualized as a vascular browning, likely due to the onset of phenylpropanoid metabolism, which also seems to play a crucial role in the tolerance of some pepper varieties. In the current work, the potential function of distinct phenylpropanoid derivatives (suberin, lignin and phenolic compounds) in the pepper tolerance response against V...
May 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28321795/phytase-production-by-aspergillus-niger-ncim-563-for-a-novel-application-to-degrade-organophosphorus-pesticides
#16
Parin C Shah, V Ravi Kumar, Syed G Dastager, Jayant M Khire
The production of phytase using Aspergillus niger NCIM 563 under submerged fermentation conditions was studied using protein rich chickpea flour as substrate. Employing a hybrid statistical media optimization strategy of Plackett-Burman and Box-Behnken experimental designs in shake-flasks gave an increased phytase activity from an initial 66 IU/mL in 216 h to 160 IU/mL in a reduced time of 132 h. Productivity, thus increased by 3.97 times from 7.3 to 29 IU/mL/day. Using the optimized media, the production was successfully scaled-up further and improved up to 164 IU/mL in 96 h by studies carried out employing 2 and 10-L fermenters...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28314149/cytokinin-response-in-pepper-plants-capsicum-annuum-l-exposed-to-silver-nanoparticles
#17
Tomislav Vinković, Ondrej Novák, Miroslav Strnad, Walter Goessler, Darija Domazet Jurašin, Nada Parađiković, Ivana Vinković Vrček
The increasing development of different nanomaterials, such as silver nanoparticles (AgNPs), and their practical use in agriculture and biotechnology has created a strong need for elucidations of biological effects and risk assessments of AgNPs in plants. This study was aimed to investigate AgNPs effects on metal uptake and their biodistribution in pepper plants as well as on morphological parameters and hormonal responses of the isoprenoid cytokinin (CK) family. In addition, the comparison of effects silver form, nanoparticles vs...
March 14, 2017: Environmental Research
https://www.readbyqxmd.com/read/28300025/evaluation-of-matrix-effects-in-multiresidue-analysis-of-pesticide-residues-in-vegetables-and-spices-by-lc-ms-ms
#18
Suchi Chawla, Hemlatta K Patel, Hetal N Gor, Kiran M Vaghela, Priti P Solanki, Paresh G Shah
The study was conducted to investigate matrix interferences using QuEChERS sample preparation to understand whether thedilution of matrix and/or the grouping of commodities can eliminate the need for selective individual matrix-matched standards in LC with tandem MS (MS/MS) analysis, and whether the calibration graph based on only one matrix can be used for quantification in the other matrixes. Matrix effects (MEs) were studied by comparing the slopes of calibration curves of the matrix-matched standards (diluted with mobile phase) vis-à-vis the solvent-based standards...
March 16, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28296187/lethal-and-sublethal-effects-of-pesticides-in-the-management-of-polyphagotarsonemus-latus-banks-acari-tarsonemidae-on-capsicum-annuum-l
#19
Mariana O Breda, José V Oliveira, Alberto B Esteves Filho, Douglas R S Barbosa, Andrezo A Santos
BACKGROUND: The evaluation of lethal and sublethal effects are of great importance for a complete assessment of the total impact of chemical compounds upon pest populations and the development of management strategies. At this study, the lethal and sublethal effects of different synthetic and botanical products were evaluated upon the broad mite, Polyphagotarsonemus latus (Banks), a major pest of Capsicum annuum L and other crops. RESULTS: Abamectin presented the highest lethal effect to P...
March 15, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28293725/a-nano-au-c-mwcnt-based-label-free-amperometric-immunosensor-for-the-detection-of-capsicum-chlorosis-virus-in-bell-pepper
#20
Anshul Sharma, Ankur Kaushal, Saurabh Kulshrestha
Accurate and on time diagnosis of plant viruses is an essential prerequisite for efficient control in field conditions. A number of diagnostic methods have been reported with the required level of sensitivity. Here, we propose a label free immunosensor for efficient and sensitive detection of capsicum chlorosis virus (CaCV) in bell pepper. Antigen was immobilized over the surface of gold nanoparticle/multi-walled carbon nanotube (Nano-Au/C-MWCNT) screen printed electrodes using 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC)/N-hydroxysuccinimide (NHS) cross linking chemistry followed by interaction with groundnut bud necrosis virus (GBNV)/CaCV specific polyclonal antibody...
March 14, 2017: Archives of Virology
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