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https://www.readbyqxmd.com/read/28220324/virus-surveys-of-capsicum-spp-in-the-republic-of-benin-reveal-the-prevalence-of-pepper-vein-yellows-virus-and-the-identification-of-a-previously-uncharacterised-polerovirus-species
#1
Leonard Afouda, Daouda Kone, Valerien Zinsou, Laurence Dossou, Lawrence Kenyon, Stephan Winter, Dennis Knierim
Surveys were conducted in 2014 and 2015 in Southern and Northern Benin, respectively, to identify the viruses infecting peppers (Capsicum spp.). The samples were screened by ELISA for cucumber mosaic virus (CMV), pepper veinal mottle virus (PVMV), potato virus Y (PVY) and tomato yellow leaf curl virus (TYLCV). A generic reverse transcription PCR (RT-PCR) was used to test for the presence of poleroviruses. ELISA tests confirmed the prevalence of all viruses, while the RT-PCR detected pepper vein yellows virus (PeVYV) which is reported for the first time in Benin...
February 20, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28207797/mutation-increasing-%C3%AE-carotene-concentrations-does-not-adversely-affect-concentrations-of-essential-mineral-elements-in-pepper-fruit
#2
Nasya B Tomlekova, Philip J White, Jacqueline A Thompson, Emil A Penchev, Stephan Nielen
Vitamin and mineral deficiencies are prevalent in human populations throughout the world. Vitamin A deficiency affects hundreds of millions of pre-school age children in low income countries. Fruits of pepper (Capsicum annuum L.) can be a major dietary source of precursors to Vitamin A biosynthesis, such as β-carotene. Recently, pepper breeding programs have introduced the orange-fruited (of) trait of the mutant variety Oranzheva kapiya, which is associated with high fruit β-carotene concentrations, to the mutant variety Albena...
2017: PloS One
https://www.readbyqxmd.com/read/28204897/characterization-of-tomato-apical-stunt-viroid-isolated-from-a-24-year-old-seed-lot-of-capsicum-annuum
#3
J Th J Verhoeven, H M S Koenraadt, M Westenberg, J W Roenhorst
Tomato apical stunt viroid (TASVd) has been identified in a 24-year old seed lot of Capsicum annuum produced in Taiwan. It is the first finding of TASVd in this plant species. The isolate could be discriminated from all reported isolates of TASVd based on its nucleotide sequence, which showed only 94.8% identity with the most related genotype of TASVd. This discrimination was substantiated by phylogenetic analysis. Inoculation of a RNA extract of contaminated seeds to healthy pepper plants showed that the infectivity of the viroid had remained over time...
February 15, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28184010/the-pepper-ring-type-e3-ligase-caairf1-regulates-the-aba-and-drought-signaling-via-caadip1-protein-phosphatase-degradation
#4
Chae Woo Lim, Woonhee Baek, Sung Chul Lee
Ubiquitin-mediated protein modification occurs at multiple steps of abscisic acid (ABA) signaling. Here, we sought proteins responsible for degradation of the pepper type 2C protein phosphatase CaADIP1 via the 26S proteasome system. We showed that the RING type E3 ligase CaAIRF1 (Capsicum annuum ADIP1 Interacting RING Finger Protein 1) interacts with and ubiquitinates CaADIP1. CaADIP1 degradation was slower in crude proteins from CaAIRF1-silenced peppers than in those from control plants. CaAIRF1-silenced pepper plants displayed reduced ABA sensitivity and decreased drought tolerance characterized by delayed stomatal closure and suppressed induction of ABA- and drought-responsive marker genes...
February 9, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28182679/comparative-host-selection-responses-of-specialist-helicoverpa-assulta-and-generalist-helicoverpa-armigera-moths-in-complex-plant-environments
#5
Wei-Zheng Li, Xiao-Hui Teng, Hong-Fei Zhang, Ting Liu, Qiong Wang, Guohui Yuan, Xian-Ru Guo
We tested the behavioral responses of ovipositing females and natal larvae of two sibling species, a generalist Helicoverpa armigera (Hübner) and a specialist Helicoverpa assulta (Guenée), to odor sources emitted from different combinations of six plant species (tobacco, Nicotiana tabacum; hot pepper, Capsicum annuum; tomato, Solanum esculentum; cotton, Gossypium hirsutum; peanut, Arachis hypogaea; maize, Zea mays). Under the conditions of plant materials versus corresponding controls, both stages of both species could find their corresponding host plants...
2017: PloS One
https://www.readbyqxmd.com/read/28176159/new-korean-isolates-of-pepper-mild-mottle-virus-pmmov-differ-in-symptom-severity-and-subcellular-localization-of-the-126%C3%A2-kda-protein
#6
Sang-Hyuk Han, Jong-Seo Park, Jae-Yeong Han, Jun-Su Gong, Chan-Hwan Park, Jung-Kyu Kim, Eun-Young Seo, Leslie L Domier, John Hammond, Hyoun-Sub Lim
Two isolates of Pepper mild mottle virus (PMMoV) were selected from a nationwide survey of pepper fields in South Korea in 2014 and 2015, in which Cucumber mosaic virus was also detected; the two PMMoV isolates, Sangcheong 47 (S-47, KX399390) and Jeongsong 76 (J-76, KX399389), share ~99% nucleotide and amino acid identity and are closely related to Japanese and Chinese isolates at the nucleotide level. Amino acid sequence comparisons revealed 99.73, 99.81, 98.44, and 100% identity in the ORF1, ORF2, MP, and CP, respectively, between S-47 and J-76...
February 7, 2017: Virus Genes
https://www.readbyqxmd.com/read/28161544/purification-and-characterization-of-peptides-from-capsicum-annuum-fruits-which-are-%C3%AE-amylase-inhibitors-and-exhibit-high-antimicrobial-activity-against-fungi-of-agronomic-importance
#7
Layrana de Azevedo Dos Santos, Gabriel Bonan Taveira, Suzanna de Fátima Ferreira Ribeiro, Lídia da Silva Pereira, André de Oliveira Carvalho, Rosana Rodrigues, Antônia Elenir Amâncio Oliveira, Olga Lima Tavares Machado, Jucélia da Silva Araújo, Ilka Maria Vasconcelos, Valdirene Moreira Gomes
Proteins extracted from Capsicum annuum L. fruits were initially subjected to reversed-phase chromatography on HPLC, resulting in eight peptide-rich fractions. All the fractions obtained were tested for their ability to inhibit porcine trypsin and amylase from both human saliva and from larval insect in vitro. All fractions were also tested for their ability to inhibit growth of the phytopathogenic fungi. Several fractions inhibited the activity of human salivary amylase and larval insect amylase, especially fraction Fa5...
February 2, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28155188/inducible-expression-of-bs2-r-gene-from-capsicum-chacoense-in-sweet-orange-citrus-sinensis-l-osbeck-confers-enhanced-resistance-to-citrus-canker-disease
#8
Lorena Noelia Sendín, Ingrid Georgina Orce, Rocío Liliana Gómez, Ramón Enrique, Carlos Froilán Grellet Bournonville, Aldo Sergio Noguera, Adrián Alberto Vojnov, María Rosa Marano, Atilio Pedro Castagnaro, María Paula Filippone
Transgenic expression of the pepper Bs2 gene confers resistance to Xanthomonas campestris pv. vesicatoria (Xcv) pathogenic strains which contain the avrBs2 avirulence gene in susceptible pepper and tomato varieties. The avrBs2 gene is highly conserved among members of the Xanthomonas genus, and the avrBs2 of Xcv shares 96% homology with the avrBs2 of Xanthomonas citri subsp. citri (Xcc), the causal agent of citrus canker disease. A previous study showed that the transient expression of pepper Bs2 in lemon leaves reduced canker formation and induced plant defence mechanisms...
February 2, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28140774/microcystin-accumulation-and-potential-effects-on-antioxidant-capacity-of-leaves-and-fruits-of-capsicum-annuum
#9
Damjana Drobac, Nada Tokodi, Biljana Kiprovski, Djordje Malenčić, Tamara Važić, Sonja Nybom, Jussi Meriluoto, Zorica Svirčev
Surface water, often used for irrigation purposes, may sometimes be contaminated with blooming cyanobacteria and thereby may contain their potent and harmful toxins. Cyanotoxins adversely affect many terrestrial plants, and accumulate in plant tissues that are subsequently ingested by humans. Studies were undertaken to (1) examine the bioaccumulation of microcystins (MCs) in leaves and fruits of pepper Capsicum annuum and (2) examine the potential effects of MCs on antioxidant capacity of these organs. Plants were irrigated with water containing MCs for a period of 3 mo...
January 31, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28139827/application-and-bioactive-properties-of-cati-a-trypsin-inhibitor-from-capsicum-annuum-seeds-membrane-permeabilization-oxidative-stress-and-intracellular-target-in-phytopathogenic-fungi-cells
#10
Marciele S Silva, Suzanna F F Ribeiro, Gabriel B Taveira, Rosana Rodrigues, Katia V S Fernandes, André O Carvalho, Ilka Maria Vasconcelos, Erica Oliveira Mello, Valdirene M Gomes
BACKGROUND: During the last few years, a growing number of antimicrobial peptides have been isolated from plants and particularly from seeds. Recent results from our laboratory have shown the purification of a new trypsin inhibitor, named CaTI, from chilli pepper (Capsicum annuum L.) seeds. This study aims to evaluate the antifungal activity and mechanism of action of CaTI on phytopathogenic fungi and detect the presence of protease inhibitors in other species of this genus. RESULTS: Our results show that CaTI can inhibit the growth of the phytopathogenic fungi Colletotrichum gloeosporioides and C...
January 31, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28137291/the-complete-genome-sequence-occurrence-and-host-range-of-tomato-mottle-mosaic-virus-chinese-isolate
#11
Yueyue Li, Yang Wang, John Hu, Long Xiao, Guanlin Tan, Pingxiu Lan, Yong Liu, Fan Li
BACKGROUND: Tomato mottle mosaic virus (ToMMV) is a recently identified species in the genus Tobamovirus and was first reported from a greenhouse tomato sample collected in Mexico in 2013. In August 2013, ToMMV was detected on peppers (Capsicum spp.) in China. However, little is known about the molecular and biological characteristics of ToMMV. METHODS: Reverse transcription-polymerase chain reaction (RT-PCR) and rapid identification of cDNA ends (RACE) were carried out to obtain the complete genomic sequences of ToMMV...
January 31, 2017: Virology Journal
https://www.readbyqxmd.com/read/28122266/identification-and-characterization-of-novel-micrornas-for-fruit-development-and-quality-in-hot-pepper-capsicum-annuum-l
#12
Zhoubin Liu, Yuping Zhang, Lijun Ou, Linyu Kang, Yuhua Liu, Junheng Lv, Ge Wei, Bozhi Yang, Sha Yang, Wenchao Chen, Xiongze Dai, Xuefeng Li, Shudong Zhou, Zhuqing Zhang, Yanqing Ma, Xuexiao Zou
MicroRNAs (miRNAs) are non-coding small RNAs which play an important regulatory role in various biological processes. Previous studies have reported that miRNAs are involved in fruit development in model plants. However, the miRNAs related to fruit development and quality in hot pepper (Capsicum annuum L.) remains unknown. In this study, small RNA populations from different fruit ripening stages and different varieties were compared using next-generation sequencing technology. Totally, 59 known miRNAs and 310 novel miRNAs were identified from four libraries using miRDeep2 software...
January 22, 2017: Gene
https://www.readbyqxmd.com/read/28110596/aging-and-haptic-visual-solid-shape-matching
#13
J Farley Norman, Olivia C Adkins, Catherine J Dowell, Stevie C Hoyng, Ashley N Gilliam, Lauren E Pedersen
A total of 36 younger (mean age = 21.3 years) and older adults (mean age = 73.8 years) haptically explored plastic copies of naturally shaped objects (bell peppers, Capsicum annuum) one at a time for 7 s each. The participants' task was to then choose which of 12 concurrently visible objects had the same solid shape as the one they felt. The younger and older participants explored the object shapes using either one, three, or five fingers (there were six participants for each combination of number of fingers and age group)...
January 1, 2017: Perception
https://www.readbyqxmd.com/read/28109601/effects-of-rumen-protected-capsicum-oleoresin-on-immune-responses-in-dairy-cows-intravenously-challenged-with-lipopolysaccharide
#14
J Oh, M Harper, F Giallongo, D M Bravo, E H Wall, A N Hristov
The objective of this experiment was to investigate the effects of rumen-protected Capsicum oleoresin (RPC) on productivity and immune responses including feed intake, milk yield and composition, white and red blood cells, lipid peroxidation, and blood concentration of cortisol, haptoglobin, glucose, and insulin in lactating dairy cows experimentally challenged with lipopolysaccharide (LPS). The experiment was a replicated 3 × 3 Latin square design with 9 multiparous Holstein cows in three 28-d periods. Treatments were 0 (control), 100, and 200 mg of RPC/cow per day, mixed with small portions of the total mixed ration and top-dressed...
March 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28098506/capsicum-annuum-var-grossum-bell-pepper-inhibits-%C3%AE-secretase-activity-and-%C3%AE-amyloid1-40-aggregation
#15
Omodesola Oluwafisayo Ogunruku, Ganiyu Oboh, Sabina Passamonti, Federica Trammer, Aline Augusti Boligon
The deposition of amyloid protein as senile plaques is the major signature of Alzheimer's disease (AD). It is produced by the sequential cleavage of the amyloid precursor protein by secretases. Moreover, peppers are noted for their antiaging and cognitive enhancing properties. Thus, in this study, the effects of polyphenol-rich extracts from bell pepper on amyloid production and aggregation in vitro were investigated. Bell pepper (ripe and unripe) was extracted with methanol-1 N HCl (1:1 v/v). Thereafter, the inhibitory potentials of the extracts on β-secretase and β-amyloid1-40 aggregation were determined...
February 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28092615/immunoreactivity-of-arcuate-nucleus-astrocytes-in-rats-after-intragastric-administration-of-habanero-peppers-capsicum-chinese-jacq
#16
K Rycerz, A Krawczyk, J Jaworska-Adamu, M Gołyński, K Lutnicki, I Balicki
Habanero pepper fruits contain capsaicin (CAP) characterised by a spicy taste. Astrocytes express vanilloid receptor (TRPV1), which interacts with cannabinoids including CAP. Only a few studies revealed that CAP leads to alterations of the arcuate nucleus (ARC) structures. The aim of this study was to analyse the GFAP (GFAP-IR) and S100β (S100β-IR) immunoreactive astrocytes of ARC in adult rats after intragastric administration of habanero pepper fruits. Adult, Wistar rats received a peanut oil - control group (C) - and oil suspension of habanero pepper fruits at a dose of 0...
December 1, 2016: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28088423/effects-of-rumen-protected-capsicum-oleoresin-on-productivity-and-responses-to-a-glucose-tolerance-test-in-lactating-dairy-cows
#17
J Oh, M Harper, F Giallongo, D M Bravo, E H Wall, A N Hristov
The objective of this experiment was to investigate the effects of rumen-protected Capsicum oleoresin (RPC) supplementation on feed intake, milk yield and composition, nutrient utilization, fecal microbial ecology, and responses to a glucose tolerance test in lactating dairy cows. Nine multiparous Holstein cows were used in a replicated 3 × 3 Latin square design balanced for residual effects with three 28-d periods. Each period consisted of 14 d for adaptation and 14 d for data collection and sampling. Treatments were 0 (control), 100, and 200 mg of RPC/cow per day...
March 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28088019/melatonin-and-resveratrol-reverse-the-toxic-effect-of-high-boron-b-and-modulate-biochemical-parameters-in-pepper-plants-capsicum-annuum-l
#18
Eleana Sarafi, Pavlos Tsouvaltzis, Christos Chatzissavvidis, Anastasios Siomos, Ioannis Therios
The objectives of this research were to test a possible involvement of melatonin (MEL) and resveratrol (RES) in restoring growth and to control boron (B) toxicity in peppers. The plants were subjected to four different nutrient solution treatments as following: 1) half-strength Hoagland's nutrient solution (Control), 2) half-strength Hoagland's nutrient solution+100 μM B (100 μMB), 3) half-strength Hoagland's nutrient solution+100 μM boron+100 μMresveratrol (100 μMRES), and 4) half-strength Hoagland's nutrient solution+100 μM B+1 μMmelatonin (1 μM MEL)...
December 23, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28075582/the-form-in-which-nitrogen-is-supplied-affects-the-polyamines-amino-acids-and-mineral-composition-of-sweet-pepper-fruit-under-an-elevated-co2-concentration
#19
Maria C Piñero, Ginés Otálora, Manuel E Porras, Mari C Sánchez-Guerrero, Pilar Lorenzo, Evangelina Medrano, Francisco M Del Amor
We investigated the effect of supplying nitrogen, as NO3(-) or as NO3(-)/NH4(+), on the composition of fruits of sweet pepper (Capsicum annuum L. cv. Melchor) plants grown with different CO2 concentrations ([CO2]): ambient or elevated (800 μmol mol(-1)). The results show that the application of NH4(+) and high [CO2] affected the chroma related to the concentrations of chlorophylls. The concentrations of Ca, Cu, Mg, P, and Zn were significantly reduced in the fruits of plants nourished with NH4(+), the loss of Fe being more dramatic at increased [CO2], which was also the case with the protein concentration...
February 1, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28073158/antimicrobial-activity-and-mechanism-of-action-of-a-thionin-like-peptide-from-capsicum-annuum-fruits-and-combinatorial-treatment-with-fluconazole-against-fusarium-solani
#20
Gabriel B Taveira, Érica O Mello, André O Carvalho, Mariana Regente, Marcela Pinedo, Laura de La Canal, Rosana Rodrigues, Valdirene M Gomes
Many Fusarium species are able to cause severe infections in plants as well as in animals and humans. Therefore, the discovery of new antifungal agents is of paramount importance. CaThi belongs to the thionins, which are cationic peptides with low molecular weights (∼ 5 kDa) that have toxic effects against various microorganisms. Herein, we study the mechanism of action of CaThi and its combinatory effect with fluconazole (FLC) against Fusarium solani. The mechanism of action of CaThi was studied by growth inhibition, viability, plasma membrane permeabilization, ROS induction, caspase activation, localization and DNA binding capability, as assessed with Sytox green, DAB, FITC-VAD-FMK, CaThi-FITC and gel shift assays...
January 10, 2017: Biopolymers
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