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Phytochemistry
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Papers 32549
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#1Behnaz Tohidi (IUT: Isfahan University of Technology)H-Index: 2
#2Mehdi Rahimmalek (IUT: Isfahan University of Technology)H-Index: 14
Last.Helena Trindade (University of Lisbon)H-Index: 13
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Abstract Thyme (Thymus spp.) is a valuable genus of Lamiaceae family with different pharmaceutical and food properties. Thymol has also been considered as the major essential oil compound in most of the studied Thymus species. In this research, the gene encoding γ-terpinene synthase (Ttps2) was sequenced in T. vulgaris and in eight Iranian thymes including T. carmanicus, T. daenensis, T. fedtschenkoi, T. kotschyanus, T. migricus, T. pubescens, T. serpyllum, and T. trautvetteri. Genetic relations...
#1Wei Jiang (Fudan University)
#2Juan Xiong (Fudan University)H-Index: 15
Last.Jin-Feng Hu (Fudan University)H-Index: 12
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Abstract A phytochemical investigation on the MeOH extract of the twigs and needles of the endangered plant Picea brachytyla led to the isolation and characterization of thirty-eight structurally diverse terpenoids. Seven of these molecules are previously undescribed, including three abietane-type (brachytylins A–C) and one labdane-type (brachytylin D) diterpenoids, an unseparated C-24 epimeric mixture of cycloartane-type triterpenoids (brachytylins E/F, ratio: 1:1), and a rare rearranged 12(1 →...
#1Cleverson D.T. Freitas (UFC: Federal University of Ceará)H-Index: 14
#2Rafaela Oliveira Silva (UFC: Federal University of Ceará)H-Index: 2
Last.Thalles B. Grangeiro (UFC: Federal University of Ceará)H-Index: 22
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Abstract Cysteine peptidases (EC 3.4.22) are the most abundant enzymes in latex fluids. However, their physiological functions are still poorly understood, mainly related to defense against phytopathogens. The present study reports the cDNA cloning and sequencing of five undescribed cysteine peptidases from Calotropis procera (Aiton) Dryand (Apocynaceae) as well as some in silico analyses. Of these, three cysteine peptidases (CpCP1, CpCP2, and CpCP3) were purified. Their enzymatic kinetics were ...
#1Pedro Cuadra (UMAG: University of Magallanes)H-Index: 4
#2Joselin Guajardo (University of Talca)H-Index: 1
Last.Raúl Herrera (University of Talca)H-Index: 18
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Abstract Deschampsia antarctica inhabits the maritime territory of Antarctica and South Patagonia. It grows under very harsh environmental conditions. The survival of this species in low freezing temperatures and under high levels of UV-B radiation may constitute some of the most remarkable adaptive plant responses and suggests that this plant possesses genes associated with cold and UV tolerance. Frequently, increased levels of flavonoids have been linked to highly UV-B irradiated plants. Studi...
#1Solomiia KozachokH-Index: 1
#2Łukasz PecioH-Index: 9
Last.Wieslaw OleszekH-Index: 39
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Abstract Twelve undescribed triterpenoid pentacyclic glycosides, medicagenic acid (3-O-β-D-glucuronopyranosyl-28-O-{[β-D-glucopyranosyl-(1 → 3)-α-L-rhamnopyranosyl-(1 → 2)]-[α-L-rhamnopyranosyl-(1 → 3)]-4-O-acetyl-β-D-fucopyranosyl-(1→)}-2β,3β-dihydroxyolean-12-ene-23,28-dioic acid, 3-O-β-D-glucuronopyranosyl-28-O-{[α-L-rhamnopyranosyl-(1 → 2)]-[β-D-apiofuranosyl-(1 → 3)]-4-O-acetyl-β-D-fucopyranosyl-(1→)}-2β,3β-dihydroxyolean-12-ene-23,28-dioic acid, 3-O-β-D-glucuronopyranosyl-28-O-{[α-L-rhamno...
#1Andrea A.E. Méndez (UBA: University of Buenos Aires)H-Index: 3
#2Liliana B. Pena (UBA: University of Buenos Aires)H-Index: 11
Last.Susana M. Gallego (UBA: University of Buenos Aires)H-Index: 22
view all 8 authors...
Abstract Cyclin dependent kinase A; 1 (CDKA; 1) is essential in G1/S transition of cell cycle and its oxidation has been implicated in cell cycle arrest during plant abiotic stress. In the present study, an evaluation at the molecular level was performed to find possible sites of protein oxidative modifications. In vivo studies demonstrated that carbonylation of maize CDKA,1 is associated with a decrease in complex formation with maize cyclin D (CycD). Control and in vitro oxidized recombinant C...
#1Alfredo Ortega (UNAM: National Autonomous University of Mexico)H-Index: 16
#2Guillermo Pastor-Palacios (Instituto Potosino de Investigación Científica y Tecnológica)H-Index: 1
Last.Elihú Bautista (Instituto Potosino de Investigación Científica y Tecnológica)H-Index: 1
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Abstract Both DNA barcoding and phylogenetic data of the studied botanical material suggested the existence a new population of Galphimia glauca. Their leaves afforded three new nor-3,4-seco-friedelanes named galphimines M-O, together with known galphimines D, E, G, and I. Galphimines M and N possess bicyclic orthoacetates which are the first examples of orthoesters found in the Malpighiaceae family, while galphimine O has a 27,20-δ-lactone moiety. The structures elucidation followed from spectr...
#1Elsa Gonçalves (University of Lisbon)H-Index: 9
#2Ana Cristina Figueiredo (University of Lisbon)H-Index: 31
Last.Luis BonifácioH-Index: 13
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Abstract In Portugal, the pine black sawyer Monochamus galloprovincialis is the principal vector of the pinewood nematode, Bursaphelenchus xylophilus, the causal agent of pine wilt disease (PWD), a lethal phyopathogen with major ecological and economic consequences to European forestry. The aim of this study was to determine the influence of M. galloprovincialis feeding on the volatiles emitted by pine trees. This study focused on the pine species which are most relevant to Portugal, that is, Pi...
#1Liang Cao (Hunan University)H-Index: 1
#2Nuzhat Shehla (Hunan University)H-Index: 1
Last.Wang Wei (Hunan University)H-Index: 110
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Abstract In the present work, we take advantage of the characteristic NMR signal (δC-10 = 96.0–99.9) for guiding the isolation of schinortriterpenoids (SNTs) from n-butanol fraction of stems of Kadsura heteroclita which is a Tujia ethnomedicine with trivial name “Xuetong”. This effort resulted in the identification of three unreported 3,4:9,10-disecocycloartane triterpenoids xuetongdilactones A-C and three undescribed SNTs xuetongdilactones D-F, along with two known SNTs, namely, wuweizidilacton...
#1Kouji Uda (Kōchi University)H-Index: 17
#2Yumika Edashige (Kōchi University)H-Index: 1
Last.Luke A. Moe (UK: University of Kentucky)H-Index: 11
view all 7 authors...
Abstract Previous studies have shown that several d -amino acids are widely present in plants, and serine racemase (SerR), which synthesizes d -serine in vivo, has already been identified from three plant species. However, the full picture of the d -amino acid synthesis pathway in plants is not well understood. To clarify the distribution of amino acid racemases in plants, we have cloned, expressed and characterized eight SerR homologous genes from five plant species, including green alga. These...
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