keyword
MENU ▼
Read by QxMD icon Read
search

elicitor

keyword
https://www.readbyqxmd.com/read/28926758/some-aspects-of-the-iodine-metabolism-of-the-giant-kelp-macrocystis-pyrifera-phaeophyceae
#1
Teresa M Tymon, Eric P Miller, Jennifer L Gonzales, Andrea Raab, Frithjof C Küpper, Carl J Carrano
Despite its paramount role in the functioning of coastal ecosystems, relatively little is known about halogen metabolism in giant kelp (Macrocystis pyrifera). This is an important shortcoming given the potential implications for marine and atmospheric chemical processes in the wide distribution range of Macrocystis. The work presented here constitutes the first in depth investigation of the uptake, efflux, and of the physiological function of iodide in this important kelp species. Iodide uptake and efflux rates were measured in adult sporophytes of Macrocystis under normal and stressed (exogenous hydrogen peroxide and an elicitor-triggered oxidative burst) conditions...
September 8, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28924923/plant-insects-and-mites-uptake-double-stranded-rna-upon-its-exogenous-application-on-tomato-leaves
#2
Anupam Gogoi, Nomi Sarmah, Athanasios Kaldis, Dionysios Perdikis, Andreas Voloudakis
Exogenously applied double-stranded RNA (dsRNA) molecules onto tomato leaves, moved rapidly from local to systemic leaves and were uptaken by agricultural pests namely aphids, whiteflies and mites. Four small interfering RNAs, deriving from the applied dsRNA, were molecularly detected in plants, aphids and mites but not in whiteflies. Double-stranded RNA (dsRNA) acts as the elicitor molecule of the RNA silencing (RNA interference, RNAi), the endogenous and evolutionary conserved surveillance system present in all eukaryotes...
September 18, 2017: Planta
https://www.readbyqxmd.com/read/28911746/plant-growth-regulator-mediated-anti-herbivore-responses-of-cabbage-brassica-oleracea-against-cabbage-looper-trichoplusia-ni-h%C3%A3-bner-lepidoptera-noctuidae
#3
Ian M Scott, R Samara, J B Renaud, M W Sumarah
Plant elicitors can be biological or chemical-derived stimulators of jasmonic acid (JA) or salicylic acid (SA) pathways shown to prime the defenses in many crops. Examples of chemical elicitors of the JA and SA pathways include methyl-jasmonate and 1,2,3-benzothiadiazole-7-carbothioate (BTH or the commercial plant activator Actigard 50WG, respectively). The use of specific elicitors has been observed to affect the normal interaction between JA and SA pathways causing one to be upregulated and the other to be suppressed, often, but not always, at the expense of the plant's herbivore or pathogen defenses...
September 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28894566/methyl-jasmonate-induction-of-cotton-a-field-test-of-the-attract-and-reward-strategy-of-conservation-biological-control
#4
Livy Williams, Cesar Rodriguez-Saona, Sandra C Castle Del Conte
Natural or synthetic elicitors can affect plant physiology by stimulating direct and indirect defence responses to herbivores. For example, increased production of plant secondary metabolites, a direct response, can negatively affect herbivore survival, development and fecundity. Indirect responses include increased emission of plant volatiles that influence herbivore and natural enemy behaviour, and production of extrafloral nectar that serves as a food source for natural enemies after their arrival on induced plants...
September 2017: AoB Plants
https://www.readbyqxmd.com/read/28885695/evaluation-of-grenache-graciano-and-tempranillo-grape-stilbene-content-after-field-applications-of-elicitors-and-nitrogen-compounds
#5
J Portu, R López, P Ewald, P Santamaría, P Winterhalter, T Garde-Cerdán
BACKGROUND: Stilbenes have a significant biological activity and are one of the most important non-flavonoid contributors to grape and wine health-related properties. The accumulation of this class of compounds could be favored by viticultural practices like the application of biostimulants. However, stilbenes concentration also depends on several factors, including e.g. grape variety. Therefore, the aim of this work was to study the influence of foliar treatments carried out with elicitors (methyl jasmonate (MeJ) and a commercial foliar spray (YD)) and nitrogen compounds (phenylalanine and urea) on the grape stilbene composition of three varieties: Grenache, Graciano and Tempranillo...
September 8, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28878794/a-tau-class-glutathione-s-transferase-is-involved-in-trans-resveratrol-transport-out-of-grapevine-cells
#6
Ascensión Martínez-Márquez, María J Martínez-Esteso, María T Vilella-Antón, Susana Sellés-Marchart, Jaime A Morante-Carriel, Elias Hurtado, Javier Palazon, Roque Bru-Martínez
Vitis vinifera cell cultures respond to pathogens and elicitors by synthesizing and extracellularly accumulating stilbenoid phytoalexins. Large amounts of trans-resveratrol (t-R) are produced when a cell culture is elicited with methylated cyclodextrins (MBCD), either alone or combined with methyl jasmonate (MeJA). t-R transport to the extracellular medium, which represents the apoplastic space, would place this antifungal defense right in the battlefield to efficiently fight against pathogen attack. Yet despite their physiological relevance, these transport pathways are mostly unknown...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28878497/biochemical-basis-of-improvement-of-defense-in-tomato-plant-against-fusarium-wilt-by-cacl2
#7
Nilanjan Chakraborty, Swarnendu Chandra, Krishnendu Acharya
The objective of this study was to investigate the effectiveness of calcium chloride (CaCl2), as potential elicitor, on tomato plants against Fusarium oxysporum f. sp. lycopersici. Foliar application of CaCl2 showed significant reduction of wilt incidence after challenge inoculation. Increased production of defense and antioxidant enzymes was observed in elicitor treated sets over control. Simultaneously, altered amount of phenolic acids were analyzed spectrophotometrically and by using high performance liquid chromatography...
July 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/28874707/comprehensive-transcriptome-profiling-of-salvia-miltiorrhiza-for-discovery-of-genes-associated-with-the-biosynthesis-of-tanshinones-and-phenolic-acids
#8
Wei Zhou, Qiang Huang, Xiao Wu, Zewen Zhou, Mingquan Ding, Min Shi, Fenfen Huang, Shen Li, Yao Wang, Guoyin Kai
Tanshinones and phenolic acids are crucial bioactive compounds biosynthesized in Salvia miltiorrhiza. Methyl jasmonate (MeJA) is an effective elicitor to enhance the production of phenolic acids and tanshinones simultaneously, while yeast extract (YE) is used as a biotic elicitor that only induce tanshinones accumulation. However, little was known about the different molecular mechanism. To identify the downstream and regulatory genes involved in tanshinone and phenolic acid biosynthesis, we conducted comprehensive transcriptome profiling of S...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28866309/management-around-invasive-procedures-in-mastocytosis-an-update
#9
REVIEW
Maud A W Hermans, Nicolette J T Arends, Roy Gerth van Wijk, P Martin van Hagen, Hanneke C Kluin-Nelemans, Hanneke N G Oude Elberink, Suzanne G M A Pasmans, Paul L A van Daele
OBJECTIVE: Mastocytosis is a chronic hematologic disorder that is characterized by the accumulation of aberrant mast cells and typically involves the skin and/or bone marrow. Patients with mastocytosis are at increased risk of anaphylaxis. Based on theoretical assumptions, medical procedures requiring general anesthesia or radiocontrast media are deemed hazardous for patients with mastocytosis. The objective of this article is to provide a comprehensive overview of the actual risk of iatrogenic anaphylaxis and provide recommendations for daily practice...
August 30, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28857662/enhanced-production-of-total-flavones-from-inonotus-baumii-by-multiple-strategies
#10
Hui Li, Jiao Xue, Wanlong Zhou, Yajie Sun, Wei Liu, Weiping Lin, Ao Liu, Aihuan Song, Hu Zhu
As one kind of important secondary metabolites produced by Inonotus baumii, flavones can be applied in food, medicine and other industries due to their biological activities such as anti-oxidant, anti-cancer, and anti-baceterial activity. In order to enhance total flavone production in submerged fermentation of I. baumii, three different strategies, optimization of fermentation parameters by statistical designs including Plackett-Burman design and Response Surface Methodology, addition of precursors and elicitors and two-phase culture were used...
August 31, 2017: Preparative Biochemistry & Biotechnology
https://www.readbyqxmd.com/read/28829425/real-time-in-vivo-recording-of-arabidopsis-calcium-signals-during-insect-feeding-using-a-fluorescent-biosensor
#11
Thomas R Vincent, James Canham, Masatsugu Toyota, Marieta Avramova, Sam T Mugford, Simon Gilroy, Anthony J Miller, Saskia Hogenhout, Dale Sanders
Calcium ions are predicted to be key signaling entities during biotic interactions, with calcium signaling forming an established part of the plant defense response to microbial elicitors and to wounding caused by chewing insects, eliciting systemic calcium signals in plants. However, the role of calcium in vivo during biotic stress is still unclear. This protocol describes the use of a genetically-encoded calcium sensor to detect calcium signals in plants during feeding by a hemipteran pest. Hemipterans such as aphids pierce a small number of cells with specialized, elongated sucking mouthparts, making them the ideal tool to study calcium dynamics when a plant is faced with a biotic stress, which is distinct from a wounding response...
August 15, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28822179/-research-of-genes-expression-related-to-ginsenosides-biosynthesis-by-methyl-jasmonic-acid-in-ginseng-hair-roots
#12
Kang-Yu Wang, Li-Li Yu, Mei-Ping Zhang, Rui Yin, Yan-Ping Lin, Ming-Zhu Zhao, Chun-Yu Sun, Yi Wang
In order to obtain the expression of ginsenoside biosynthetic pathway related enzyme gene in ginseng hairy root under the control of elicitors, methyl jasmonate (MeJA) was added exogenously as elicitors. Ginseng hairy root clones induced by 4-year-old ginseng root was used as material, total saponin content in ginseng hairy root before and after MeJA treatment was determined by vanillin-sulfuric acid colorimetry, Meanwhile, relative expression of squalene synthase genes, squalene epoxidase genes, oxidized squalene cyclase genes, dammarenediol synthase genes, β-amyrin synthase genes, cycloartenol synthase genes before and after MeJA treatment were determined by Real-time PCR...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28822175/-application-of-plant-tissue-culture-in-field-of-chinese-medicine-resources
#13
REVIEW
Juan Wang, Jin-Xin Li, Jian-Li Li, Wen-Yuan Gao
Plant tissue culture technology has been widely used in the field of traditional Chinese medicine(TCM) resources with its unique advantages, playing an important role in the protection of TCM resources. In this review, some applications of plant tissue culture were summarized, including production of active compounds by using plant tissue culture, genetic diversity analysis, Dao-di herbs, elicitor application, biosynthesis and transgenic plants. Through the above researches will promote the further development of plant tissue culture technology, making it play a greater role in the field of TCM resources...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28819874/effect-of-elicitors-on-the-production-of-pyrroloquinazoline-alkaloids-by-stimulating-anthranilate-synthase-activity-in-adhatoda-vasica-nees-cell-cultures
#14
Bharat Singh, Pooran M Sahu, Ram A Sharma
Pyrroloquinazoline alkaloids are medicinally important compounds, determined by HPLC from cell cultures of Adhatoda vasica . The maximum production of vasicinone (12-fold) and vasicine (8.3-fold) was enhanced by stimulating the anthranilate synthase activity via feeding of tryptophan and sorbitol. The decoction of Adhatoda vasica leaves is used for the treatment of throat irritations, inflammations and recommended as expectorant. The plant species contains pyrroloquinazoline alkaloids and has been reported to demonstrate various biological activities...
August 17, 2017: Planta
https://www.readbyqxmd.com/read/28819739/oligosaccharide-elicitor-prepared-from-salecan-triggers-the-defense-responses-of-arabidopsis-thaliana-col0-against-botrytis-cinerea-infection
#15
Haiyang Xu, Jing Li, Shiming Wang, Linxiang Xu, Rui Cheng, Jianfa Zhang
Oligosaccharides from the water-soluble β-glucan, Salecan, were investigated to evaluate the activation effect on the defense responses of Arabidopsis thaliana Col0. Salecan oligosaccharides (ScOs, DP 5-10) were prepared at first by acid hydrolysis and gel filtration chromatography and then employed for foliar spray on Arabidopsis seedlings and plants. After ScOs treatment, increase of hydrogen peroxide was histologically and analytically detected in leaves. Transcription levels of several indicator genes which correspond to the signaling pathways and pathogenesis-related proteins were up-regulated at different time by means of quantitative RT-PCR analysis...
August 17, 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28818753/benzoylsalicylic-acid-derivatives-as-defense-activators-in-tobacco-and-arabidopsis
#16
Samuel Kamatham, Reddanna Pallu, Anil Kumar Pasupulati, Surya Satyanarayana Singh, Padmaja Gudipalli
Systemic acquired resistance (SAR) is a long lasting inducible whole plant immunity often induced by either pathogens or chemical elicitors. Salicylic acid (SA) is a known SAR signal against a broad spectrum of pathogens in plants. In a recent study, we have reported that benzoylsalicylic acid (BzSA) is a SAR inducer in tobacco and Arabidopsis plants. Here, we have synthesized BzSA derivatives using SA and benzoyl chlorides of various moieties as substrates. The chemical structures of BzSA derivatives were elucidated using Infrared spectroscopy (IR), Nuclear magnetic spectroscopy (NMR) and High-resolution mass spectrometer (HRMS) analysis...
August 14, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28803980/humoral-immune-response-of-galleria-mellonella-after-repeated-infection-with-bacillus-thuringiensis
#17
Paulina Taszłow, Lidiia Vertyporokh, Iwona Wojda
The insect immune system relies on innate mechanisms only. However, there is an increasing number of data reporting that previous immune challenge with microbial elicitors or a low number of microorganisms can modulate susceptibility after subsequent lethal infection with the same or different pathogen. This phenomenon is called immune priming. Its biochemical and molecular mechanisms remain unravelled. Here we present that Galleria mellonella larvae that survived infection induced by intrahemocelic injection of a low dose of Bacillus thuringiensis were more resistant to re-injection of a lethal dose of the same bacteria but not other bacteria and fungi tested...
August 10, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28802186/a-l-type-lectin-gene-is-involved-in-the-response-to-hormonal-treatment-and-water-deficit-in-volkamer-lemon
#18
Dayse Drielly Sousa Santana Vieira, Giovanni Emiliani, Paola Bartolini, Alessandra Podda, Mauro Centritto, François Luro, Renata Del Carratore, Raphaël Morillon, Abelmon Gesteira, Biancaelena Maserti
Combination of biotic and abiotic stress is a major challenge for crop and fruit production. Thus, identification of genes involved in cross-response to abiotic and biotic stress is of great importance for breeding superior genotypes. Lectins are glycan-binding proteins with a functions in the developmental processes as well as in the response to biotic and abiotic stress. In this work, a lectin like gene, namely ClLectin1, was characterized in Volkamer lemon and its expression was studied in plants exposed to either water stress, hormonal elicitors (JA, SA, ABA) or wounding to understand whether this gene may have a function in the response to multiple stress combination...
August 1, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28801742/the-cyclic-lipopeptide-orfamide-induces-systemic-resistance-in-rice-to-cochliobolus-miyabeanus-but-not-to-magnaporthe-oryzae
#19
Zongwang Ma, Marc Ongena, Monica Höfte
The Pseudomonas- derived cyclic lipopeptide orfamide can induce resistance to Cochliobolus miyabeanus but not to Magnaporthe oryzae in rice. Abscisic acid signaling is involved in the induced systemic resistance response triggered by orfamide. Diverse natural products produced by beneficial Pseudomonas species have the potential to trigger induced systemic resistance (ISR) in plants, and thus may contribute to control of diseases in crops. Some beneficial Pseudomonas spp. can produce cyclic lipopeptides (CLPs), amphiphilic molecules composed of a fatty acid tail linked to an oligopeptide which is cyclized...
August 11, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28796123/hymenoptera-induced-anaphylaxis-is-it-a-mast-cell-driven-hematological-disorder
#20
Knut Brockow, Cem Akin
PURPOSE OF REVIEW: Hymenoptera-induced allergy (HVA) is a common cause of anaphylaxis and may be fatal. It is associated with systemic mastocytosis in about 7% of adult patients. Systemic mastocytosis is a proliferative disorder of hematopoietic mast cell progenitors. There is recent data on the association between systemic mastocytosis and HVA. RECENT FINDINGS: Hymenoptera venoms are the most common immunoglobulin E-mediated elicitors of anaphylaxis in patients with mastocytosis...
August 8, 2017: Current Opinion in Allergy and Clinical Immunology
keyword
keyword
71308
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"