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proline, etc ; derivatization; fermentation; fermented beverages; ionization; Eastern European region; Show all 6 Subjects
Abstract:
... Derivatization reagents based on azobenzene containing different N-hydroxysuccinimidyl moieties– AzoB (carbamate) and AzoC (ester) – are proposed for the LC-ESI-MS analysis of free amino acids in fermented beverages and juices. A dual comparison between LC-MS/MS in positive and negative ESI modes in dynamic Multiple Reaction Monitoring (dMRM) and Neutral Loss Scan was investigated. The results ind ...
proline, etc ; CRISPR-Cas systems; antioxidant enzymes; ferulic acid; hydrogen peroxide; mutagenesis; protein content; stress tolerance; superoxide anion; temperature; tomatoes; transcription factors; Show all 12 Subjects
Abstract:
... Non-expresser of pathogenesis-related genes 1 (NPR1) has been demonstrated to be a master transcription factor during resistance against pathogens, the mechanisms by which regulates chilling stress, however, remain unclear. Our results revealed that the expression and protein content of SlNPR1 were dramatically induced by low temperature (4 °C). CRISPR/Cas9-mediated SlNPR1 mutagenesis aggravated t ...
proline, etc ; Prunus; almonds; chlorides; economic feasibility; electrical conductivity; gene expression regulation; genotype; ion channels; salinity; salt stress; salt tolerance; sequence analysis; transcriptome; Show all 14 Subjects
Abstract:
... The almond crop has high economic importance on a global scale, but its sensitivity to salinity stress can cause severe yield losses. Salt-tolerant rootstocks are vital for crop economic feasibility under saline conditions. Two commercial rootstocks submitted to salinity, and evaluated through different parameters, had contrasting results with the survival rates of 90.6% for 'Rootpac 40' (tolerant ...
... For sustainable aquaculture, the replacement of dietary fishmeal with plant protein is becoming more common because fishmeal resources are limited. However, in the case of carnivorous fish such as yellowtail (Seriola quinqueradiata), reducing the dietary fishmeal level often causes low feed intake. Improving feed intake is important in the use of a non- and low-fishmeal diet. However, little is kn ...
proline, etc ; Camellia sinensis; antioxidants; carotenoids; catalase; chlorophyll; cultivars; drought tolerance; foliar application; growth and development; irrigation rates; malondialdehyde; melatonin; peroxidase; polyphenols; protein content; sugars; tea; water stress; Iran; Show all 20 Subjects
Abstract:
... Drought stress really restring the growth and development of tea plant and affecting quality and yield. In tea growing areas of Iran, drought stress is a serious problem that affects the yield and quality of green leaves, therefore introducing cultivars that tolerate drought stress is one of the breeding purpose. To distinguish the variations in four tea cultivars response to drought stress and th ...
Charlotte Védère; Manhattan Lebrun; Philippe Biron; Séverine Planchais; Marianne Bordenave-Jacquemin; Nicolas Honvault; Stéphane Firmin; Arnould Savouré; David Houben; Cornelia Rumpel
proline, etc ; belowground biomass; biochar; biomass production; climate change; composts; drought; environment; gas exchange; leaves; plant growth; soil; soil enzymes; stomatal conductance; water shortages; water stress; water use efficiency; Show all 17 Subjects
Abstract:
... Due to increased drought frequency following climate change, practices improving water use efficiency and reducing water-stress are needed. The efficiency of organic amendments to improve plant growth conditions under drought is poorly known. Our aim was to investigate if organic amendments can attenuate plant water-stress due to their effect on the plant-soil system and if this effect may increas ...
... This experimental study was conducted to investigate the effects of β-aminobutyric acid (BABA) on chilling injury in cold-stored cucumber fruit. Results showed that BABA decreased the development of chilling injury in cucumber fruit. BABA-treated fruit exhibited elevated antioxidant ability, indicated by high activities of superoxide dismutase (SOD) and catalase (CAT) and low levels of hydrogen pe ...
... The aim of this study was to evaluate the physiological and biochemical heat responses of grafted tomato (Solanum lycopersicum L.) seedlings and their changes during the post-stress recovery period. Heat-tolerant ‘Celebrity’ and heat-sensitive ‘Arkansas Traveler’ tomatoes were grafted onto a commercial ‘Maxifort’ rootstock, and transplants were grown in growth chambers for 14 days of heat treatmen ...
... Water quality is closely related to the nutritional and sensory qualities of grass carp, which has the largest aquaculture production among freshwater fishes. The purpose of this study was to explore the effects of nitrite and nitrate on the growth performance, nutrition composition and muscle flavor-associated metabolites of grass carp through an exposure experiment with varying concentrations (n ...
... Cadmium (Cd) induces severe soil pollution worldwide and exerts adverse effects on paddy field arthropods. Spiders grant a novel perspective to assess the Cd-induced toxicity, yet the impacts of long-term Cd stress on spider silk glands and its underlying mechanism remain elusive. The study showed that Cd stress enervated the antioxidant system in the spider Pardosa pseudoannulata, manifested as t ...
... γ-Hydroxyolefin derived from proline undergoes a smooth ene cyclization with aldehydes to produce the 7-oxa-1-azaspiro[4.5]decane scaffolds in good yields. Whereas the condensation of γ-hydroxyalkene with 2-hydroxybenzaldehyde affords the corresponding tetrahydro-2H-spiro[pyrano[3,2-c]chromene-3,2′-pyrrolidine derivatives in excellent yields. This is the first report on the ene cyclization of alde ...
proline; proline racemase, etc ; Escherichia coli; Pseudomonas pseudoalcaligenes; biotechnology; dehydrogenation; enantioselectivity; glutamic acid; oxidoreductases; Show all 9 Subjects
Abstract:
... D-proline and N-boc-5-hydroxy-L-proline are key chiral intermediates in the production of eletriptan and saxagliptin, respectively. An efficient proline racemase–proline dehydrogenase cascade was developed for the enantioselective production of D-proline. It included the racemization of L-proline to DL-proline and the enantioselective dehydrogenation of L-proline in DL-proline. The racemization of ...
proline, etc ; dipeptides; isomerases; isomerization; separation; Show all 5 Subjects
Abstract:
... Liquid–liquid phase separation (LLPS) of intrinsically disordered proteins (IDPs) and the action of molecular chaperones are tightly connected. An important class of molecular chaperones are peptidyl prolyl isomerases, which enhance the cis/trans-isomerization of proline. However, little is known about the impact of peptidyl prolyl isomerases on the LLPS of IDPs, which often contain many prolines. ...
proline, etc ; enantiomers; mandelic acid; stoichiometry; Show all 4 Subjects
Abstract:
... We present a thought-provoking development in chiral resolution. Using a resolving agent of a given handedness, l-proline, we show that both R- and S-enantiomers of mandelic acid can be resolved from a racemic mixture simply by varying the stoichiometry. We are the first to report this specific feature, achieved by the existence of stoichiometrically diverse cocrystal systems between R- and S-mand ...
... The conformational sensitivity of intrinsically disordered proteins to shifts in pH due to their high degree of charged residues has been recognized for well over a decade. However, the role of the non-ionizable residues in this pH sensitivity remains poorly understood. Our lab has been investigating the pH sensitivity of the poly-E motifs of the PEVK region of the muscle protein titin, which prov ...
proline, etc ; carbon nanotubes; catalytic activity; condensation reactions; Show all 4 Subjects
Abstract:
... l-proline on multi-wall carbon nanotubes (l-proline/MWCNTs) catalysts doped with suitable auxiliary support materials are successfully applied in the continuous flow catalytic syntheses, including Aldol reaction, Mannich reaction and Knoevenagel condensation reaction. With the advantages of easy operation, high efficiency and excellent stability, this method is promising in large-scale synthesis. ...
proline, etc ; boronic acids; chloroform; organic chemistry; solvents; Show all 5 Subjects
Abstract:
... The critical influence of solvent effects on proline-catalyzed aldol reactions has been extensively described. Herein, we apply multivariate regression strategies to probe the influence of different solvents on an aldol reaction catalyzed by proline modified at its secondary sphere with boronic acids. In this system, both in situ binding of the boronic acid to proline and the outcome of the aldol ...
proline, etc ; bioimaging; chemoselectivity; cytotoxicity; membrane permeability; peptides; Show all 6 Subjects
Abstract:
... Chemoselective construction of naphthoxazoles (NapOx) via a three-component annulation reaction enables proline selective labeling of peptides in solution or in solid-phase synthesis. The fluorogenic peptides possess low cytotoxicity, efficient cell membrane permeability and excellent bioimaging potential for biomedical applications. ...
proline, etc ; Arabidopsis; photomorphogenesis; phytochrome; seedlings; transcription (genetics); Show all 6 Subjects
Abstract:
... Arabidopsis CONSTITUTIVELY PHOTOMORPHOGENIC1 (COP1) and PHYTOCHROME INTERACTING FACTORs (PIFs) are negative regulators, and ELONGATED HYPOCOTYL5 (HY5) is a positive regulator of seedling photomorphogenic development. Here, we report that SICKLE (SIC), a proline rich protein, acts as a novel negative regulator of photomorphogenesis. HY5 directly binds the SIC promoter and activates SIC expression i ...
proline, etc ; Lewis bases; density functional theory; organic chemistry; Show all 4 Subjects
Abstract:
... We employed density functional theory (DFT) methods to investigate the most plausible mechanism of cyclization/ring expansion of proline with o-alkynylbenzaldehyde. This one-pot reaction starts with the in situ formation of azomethine ylide, which can undergo three different reaction pathways to form the final product. Two mechanisms are based on nucleophilic addition and 4π-electrocyclization of ...