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1.
Am J Bot ; 108(10): 2038-2054, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34648660

RESUMO

PREMISE: Highly selfing plant species frequently display a distinctive suite of traits termed the selfing syndrome. Here we tested the hypothesis that these traits are grouped into correlated evolutionary modules and determined the degree of independence between such modules. METHODS: We evaluated phenotypic correlations and QTL overlaps in F2 offspring of a cross between the morning glories Ipomoea lacunosa and I. cordatotriloba and investigated how traits clustered into modules at both the phenotypic and genetic level. We then compared our findings to other QTL studies of the selfing syndrome. RESULTS: In the I. lacunosa selfing syndrome, traits grouped into modules that displayed correlated evolution within but not between modules. QTL overlap predicted phenotypic correlations, and QTLs affecting the same trait module were significantly physically clustered in the genome. The genetic architecture of the selfing syndrome varied across systems, but the pattern of stronger within- than between-module correlation was widespread. CONCLUSIONS: The genetic architecture we observe in the selfing syndrome is consistent with a growing understanding of floral morphological integration achieved via pleiotropy in clustered traits. This view of floral evolution is consistent with resource limitation or predation driving the evolution of the selfing syndrome, but invites further research into both the selective causes of the selfing syndrome and how genetic architecture itself evolves in response to changes in mating system.


Assuntos
Ipomoea , Evolução Biológica , Flores/genética , Ipomoea/genética , Fenótipo , Locos de Características Quantitativas/genética
2.
Ecotoxicol Environ Saf ; 225: 112787, 2021 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-34544020

RESUMO

Cadmium (Cd) contamination of croplands has become a threat to crop food safety and human health. In this study, we investigated the effect of sulfur on the growth of water spinach under Cd stress and the amount of Cd accumulation by increasing the soil sulfate content. We found that the biomass of water spinach significantly increased after the application of sulfur while the shoot Cd concentration was considerably reduced (by 31%). The results revealed that sulfur could promote the expression of PME and LAC genes, accompanied by an increase in PME activity and lignin content. Also, the cell wall Cd content of water spinach roots was significantly increased under sulfur treatment. This finding suggests that sulfur could enhance the adsorption capacity of Cd by promoting the generation of cell wall components, thereby inhibiting the transportation of Cd via the apoplastic pathway. In addition, the higher expression of Nramp5 under the Cd1S0 (concentration of Cd and sulfur are 2.58 and 101.31 mg/kg respectively) treatment led to increased Cd uptake. The CAX3 and ABC transporters and GST were expressed at higher levels along with a higher cysteine content and GSH/GSSR value under Cd1S1 (concentration of Cd and sulfur are 2.60 and 198.36 mg/kg respectively) treatment, which contribute to the Cd detoxification and promotion of Cd compartmentalization in root vacuoles, thereby reducing the translocation of Cd to the shoot via the symplastic pathway.


Assuntos
Ipomoea , Cádmio/toxicidade , Perfilação da Expressão Gênica , Humanos , Enxofre , Transportes
3.
Arch Virol ; 166(11): 3225-3228, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34519925

RESUMO

A novel varicosa-like virus was identified in a tall morning glory (Ipomoea purpurea) plant by high-throughput sequencing and tentatively named "morning glory varicosavirus" (MGVV). The complete genome of MGVV contains two segments of negative-sense single-stranded RNA of 6409 (RNA1) and 5288 (RNA2) nucleotides. RNA1 encodes a 224.3-kDa large protein (224K), and RNA2 encodes four putative proteins of 48.6 kDa (49K), 46.4 kDa (46K), 35.7 kDa (36K), and 36.8 kDa (37K), respectively. The 224K and 49K proteins show amino acid sequence similarity to the large protein (39.4%) and the 49K protein (22.6%), respectively, of red clover-associated varicosavirus, and the 36K protein shares 19.6% amino acid sequence similarity with protein 3 of lettuce big-vein associated virus. The 46K and 37K proteins share no significant sequence similarity to known functional viral sequences. Phylogenetic analysis based on the large protein of MGVV and other rhabdoviruses showed that MGVV clustered with the varicosaviruses. These analyses indicate that MGVV is a novel member of the genus Varicosavirus in the family Rhabdoviridae.


Assuntos
Genoma Viral , Ipomoea/virologia , Filogenia , Rhabdoviridae/genética , Doenças das Plantas/virologia , Proteínas Virais/genética , Sequenciamento Completo do Genoma
4.
Dokl Biochem Biophys ; 499(1): 289-295, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34426928

RESUMO

Occupational and environmental exposure to chromium compounds leads to nephrotoxicity to humans and animals due to the overproduction of ROS. Our study was aimed to demonstrate the shielding effect of hydroethanolic extract of Ipomoea staphylina (HEIS) bark on male Wistar rats challenged with potassium dichromate (K2Cr2O7). Division of animals was done in 4 groups' viz., normal control, K2Cr2O7 control, K2Cr2O7+HEIS (100 mg/kg), and K2Cr2O7+HEIS (200 mg/kg). Except for the normal control group, other groups were challenged with a single dose (subcutaneous) of K2Cr2O7 (15 mg/kg) and then treated with HEIS (100 and 200 mg/kg) for 1 week. It was observed that animals treated with K2Cr2O7 showed a notable increase in serum creatinine, blood urea, and BUN and dwindles in protein level. These changes were significantly reversed after a 1-week treatment with HEIS (100 and 200 mg/kg). Moreover, HEIS (100 and 200 mg/kg) showed a remarkable improvement in the activity of antioxidant enzymes (GPx, CAT, and SOD) and decreased the levels of TNF-α and IL-1ß in the kidney. Furthermore, treatment with HEIS (100 and 200 mg/kg) notably decreased the activity of caspase-3 and improved the level of HO-1 especially in the K2Cr2O7+ HEIS (200 mg/kg) group. Also, the histopathological study of the kidney supported the protective effects of HEIS. Hence, HEIS bark holds a notable protective effect against K2Cr2O7-induced nephrotoxicity in rats.


Assuntos
Antioxidantes/farmacologia , Apoptose/efeitos dos fármacos , Citoproteção/efeitos dos fármacos , Ipomoea/química , Rim/efeitos dos fármacos , Extratos Vegetais/farmacologia , Dicromato de Potássio/toxicidade , Animais , Catalase/metabolismo , Rim/citologia , Rim/metabolismo , Peroxidação de Lipídeos/efeitos dos fármacos , Masculino , Estresse Oxidativo/efeitos dos fármacos , Ratos , Ratos Wistar
5.
Planta Med ; 87(12-13): 1089-1100, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34359082

RESUMO

Ipomoea aquatica is a common green leafy vegetable that has numerous uses in traditional medicine. This study focused on the determination of the cytotoxic, antiradical, and antidiabetic properties of various fractions of the I. aquatica methanolic extract, as well as on the tentative identification of some bioactive compounds in the same fractions. The cytotoxicity was determined by the brine shrimp lethal test. The antioxidant activities of the I. aquatica fractions were investigated through 3 assays. The antidiabetic activity (in vitro) was measured by α-glucosidase and α-amylase inhibition assays. Phytochemical qualitative analyses demonstrated the presence of alkaloids, terpenoids, phenols, and flavonoids in the ethyl acetate-methanol and methanol fractions. The total phenolic and total flavonoid contents were found to be highest in the ethyl acetate-MeOH fractions. The evaluation of the cytotoxicity showed that the hexane-dichloromethane fraction is the most toxic, while the others are moderately toxic. The antioxidant activity assays showed that the ethyl acetate-MeOH fractions are the most potent, while the α-glucosidase and α-amylase assays revealed that the hexane-dichloromethane fraction might contain a potent antidiabetic agent. Some bioactive substances in the MeOH fractions, such as salicylic acid glucoside, 1-O-sinapoyl-ß-D-glucose derivative, and dihydroferulic acid derivative, were tentatively identified. To the best of our knowledge, this is the first report to detect and identify these compounds in this species. Based on the results of this study, it may be concluded that I. aquatica is a potent antioxidant agent and could be a good candidate as a natural antioxidant in food and therapeutics.


Assuntos
Antioxidantes , Ipomoea , Antioxidantes/farmacologia , Flavonoides/farmacologia , Hipoglicemiantes/farmacologia , Compostos Fitoquímicos , Extratos Vegetais/farmacologia
6.
J Hazard Mater ; 415: 125711, 2021 08 05.
Artigo em Inglês | MEDLINE | ID: mdl-34088193

RESUMO

Water spinach (Ipomoea aquatica Forssk.) is a popular semi-aquatic vegetable with high arsenic (As) accumulation capability in tropical and subtropical areas, and it can grow under both flooding and upland conditions. Because only few studies addressed the dietary As risk of vegetable consumption, this study investigated the accumulation and speciation of As in the water spinach, and the human health risk of consuming this crop grown in different water managements. Pot experiments were conducted in two soils with different As levels under both flooded and upland conditions. The results showed that As concentrations, mainly inorganic As, in soil pore water and shoots under flooded conditions increased 2.05- to 5.11-fold and 1.30- to 2.55-fold respectively as compared with upland conditions. Even though Fe plaque formation on the root surface was higher under flooded conditions than under upland conditions, it still cannot act as an effective barrier to sequester As released from flooded soils into plant tissue. The dietary risk of consuming inorganic As through water spinach planted in flooded soils was higher than in upland soils, especially in high-As-level soils. This suggests that in As-elevated soils, water spinach should be planted in upland conditions rather than in flooding conditions.


Assuntos
Arsênio , Ipomoea , Oryza , Poluentes do Solo , Arsênio/análise , Humanos , Solo , Poluentes do Solo/análise , Verduras
7.
J Hazard Mater ; 417: 125981, 2021 09 05.
Artigo em Inglês | MEDLINE | ID: mdl-33975166

RESUMO

Ferrous ion was added to the culture solution, followed by the introduction of tetracyclines (TCs), to explore the effect of iron plaque (IP) on the uptake and translocation of TCs by water spinach (Ipomoea aquatic Forsk.). The adsorption amount of TCs on the root surface positively correlated with the amount of IP, except for doxycycline and minocycline. The bioconcentration factor of TCs in roots increased and fitted well with the amount of IP. The concentration of TCs in acrial tissues was three to four orders of magnitude lower than that in roots, and the translocation factor of TCs also fitted well with the amount of IP in a negative linear relationship. Furthermore, IP significantly influenced the metabolism of TCs in water spinach. The accumulation of TC metabolites increased with the increment of IP in roots rather than in acrial tissues, which showed the significance of IP in the metabolism and accumulation of TCs in aquatic plants. Therefore, the metabolism of TCs should not be ignored if IP is induced on the root surface, and the distribution of metabolites should be taken into consideration for the risk assessment and antibiotic pollution control for aquatic plants.


Assuntos
Ipomoea , Antibacterianos , Hidroponia , Ferro , Raízes de Plantas , Tetraciclinas
8.
Chem Biodivers ; 18(7): e2100226, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33998137

RESUMO

We report the evaluation of chalcone derivatives as photosystem II (PSII) and plant growth inhibitors. Chalcone derivatives were evaluated as PSII inhibitors through Chl a fluorescence measurement. (E)-Chalcone (6a) and (E)-3-(4-bromophenyl)-1-(4-fluorophenyl)prop-2-en-1-one (6j) showed the best results, reducing the performance index on absorption basis parameter (PIabs ) by 70 %. Additionally, the decrease of TR0 /RC and ET0 /RC parameters indicates that the chalcone derivatives limited the number of active PSII reaction centers and the amount of trapped energy within them. Compounds 6a and 6j both act as post-emergent herbicides at 50 µM, reducing the root biomass of the Ipomoea grandifolia weed by 72 % and 83 %, respectively, corroborating the fluorescence results. The selectivity against weeds as compared to valuable crops by compounds 6a and 6j were evaluated employing Zea mays and Phaseolus vulgaris plants. In these, our newly synthesized compounds showed no effects on biomass accumulation of roots and aerial parts when compared to the control, providing valuable evidence for the role of these compounds as selective inhibitors of the growth of undesired weeds.


Assuntos
Chalconas/farmacologia , Inibidores do Crescimento/farmacologia , Herbicidas/farmacologia , Complexo de Proteína do Fotossistema II/antagonistas & inibidores , Biomassa , Chalconas/síntese química , Chalconas/química , Inibidores do Crescimento/síntese química , Inibidores do Crescimento/química , Herbicidas/síntese química , Herbicidas/química , Ipomoea/efeitos dos fármacos , Ipomoea/crescimento & desenvolvimento , Estrutura Molecular , Phaseolus/efeitos dos fármacos , Phaseolus/crescimento & desenvolvimento , Processos Fotoquímicos , Complexo de Proteína do Fotossistema II/metabolismo , Análise de Componente Principal , Zea mays/efeitos dos fármacos , Zea mays/crescimento & desenvolvimento
9.
BMC Genomics ; 22(1): 262, 2021 Apr 13.
Artigo em Inglês | MEDLINE | ID: mdl-33849443

RESUMO

BACKGROUND: Sweetpotato (Ipomoea batatas [L.] Lam.) is an important food crop. However, the genetic information of the nuclear genome of this species is difficult to determine accurately because of its large genome and complex genetic background. This drawback has limited studies on the origin, evolution, genetic diversity and other relevant studies on sweetpotato. RESULTS: The chloroplast genomes of 107 sweetpotato cultivars were sequenced, assembled and annotated. The resulting chloroplast genomes were comparatively analysed with the published chloroplast genomes of wild species of sweetpotato. High similarity and certain specificity were found among the chloroplast genomes of Ipomoea spp. Phylogenetic analysis could clearly distinguish wild species from cultivars. Ipomoea trifida and Ipomoea tabascana showed the closest relationship with the cultivars, and different haplotypes of ycf1 could be used to distinguish the cultivars from their wild relatives. The genetic structure was analyzed using variations in the chloroplast genome. Compared with traditional nuclear markers, the chloroplast markers designed based on the InDels on the chloroplast genome showed significant advantages. CONCLUSIONS: Comparative analysis of chloroplast genomes of 107 cultivars and several wild species of sweetpotato was performed to help analyze the evolution, genetic structure and the development of chloroplast DNA markers of sweetpotato.


Assuntos
Genoma de Cloroplastos , Ipomoea batatas , Ipomoea , Genoma de Planta , Ipomoea/genética , Ipomoea batatas/genética , Filogenia
10.
Toxicon ; 197: 40-47, 2021 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-33887299

RESUMO

In order to determine the toxicity of swainsonine present in Ipomoea carnea for goats and sheep, 12 goats and 12 sheep were divided into 3 groups of 4 goats (G1, G2 and G3) and 3 groups of 4 sheep (S4, S5 and S6) each. Groups G1 and S4 were used as controls; G2 and S5 received 1 mg/kg body weight of swainsonine from plant material and G3 and S6 received 3 mg/kg. Groups G2 and G3 presented the first clinical signs, on average, after the 54th and 39th days of ingestion of the plant, respectively. Groups S5 and S6 presented the first clinical signs, on average, on the 64th and 42nd days of the experiment, respectively. In sheep, in addition to having a longer period of ingestion until the onset of clinical signs, these signs were less severe, being evident only after the animals were forced to move. These results demonstrated that goats are more susceptible to swainsonine poisoning than sheep. Complete regression of clinical signs was observed in 5 goats and 6 sheep. However, three goats and one sheep remained with clinical signs until 120 days of the experiment, suggesting that to control the poisoning the animals should be removed from the pastures immediately after the first clinical signs. There were no significant differences in weight between the different groups, suggesting that for goats ingesting the plant, toxic Ipomoea species can be used as forage for intermittent periods of 15-30 days.


Assuntos
Ipomoea , Intoxicação por Plantas , Animais , Peso Corporal , Cabras , Intoxicação por Plantas/etiologia , Intoxicação por Plantas/veterinária , Ovinos , Swainsonina/toxicidade
11.
Toxicon ; 195: 111-118, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33667485

RESUMO

Convolvulaceae Juss. is a family of vines and shrubs composed of species of ecological and economic importance. Ipomoea asarifolia (Desr.) Roem. & Schult. and I. setifera Poir. are ruderal and evergreen weeds that invade pastures and cause intoxication in cattle during the dry season. In the present study, the essential oils (EOs) of the leaves from I. setifera (dry season) and I. asarifolia (dry and wet seasons) were obtained by steam distillation for 3h. The chemical composition of the EOs was determined using gas chromatography coupled to gas spectrometry (CG/MS) and gas chromatography with flame ionization detector (CG-FID). To correlate the toxicity of the major chemical constituents of I. setifera and I. asarifolia EOs, we predicted the inhibition activity against the cytochrome P450 (CYP450) and P-glycoprotein 1 (P-gp) using a machine learning-based (ML-based) algorithm. In silico analyses were also applied to evaluate the pharmacokinetics properties related to the penetration in the blood-brain barrier (BBB) and gastrointestinal absorption. The chemical composition of the EO of I. setifera was characterized by high levels of (E)-caryophyllene (36.7%) and ß-elemene (20.49%). The I. asarifolia EO showed a phytol derivative as the main chemical constituent in the dry season (35.49%), and its content was reduced in the sample collected during the wet season (10.67%). The constituent (E)-caryophyllene was also present in the leaves of I. asarifolia, but at lower levels (15.93-19.93%) when compared to the EOs of I. setifera. Our computational analyses indicated that the constituents caryophyllene oxide, cedroxyde, pentadecanal, and phytol can be related to the toxicity of these weeds. This is the first study to report the chemical composition of I. asarifolia and I. setifera EOs and correlate their molecular mechanism of toxicity using in silico approaches.


Assuntos
Ipomoea , Óleos Voláteis , Animais , Bovinos , Simulação por Computador , Cromatografia Gasosa-Espectrometria de Massas , Óleos Voláteis/toxicidade , Folhas de Planta
12.
Math Biosci Eng ; 18(2): 1121-1135, 2021 01 11.
Artigo em Inglês | MEDLINE | ID: mdl-33757178

RESUMO

Ipomoea cairica (L.) sweets are an invasive weed which has caused serious harm to the biodiversity and stability of the ecosystem. It is very important to accurately and rapidly identifying and monitoring Ipomoea cairica (L.) sweets in the wild for managements taking the necessary strategies to control the Ipomoea cairica (L.) sweets to rapidly grow in the wild. However, current approaches mainly depend on manual identification, which result in high cost and low efficiency. Satellite and manned aircraft are feasible assisting approaches, but the quality of the images collected by them is not well since the ground sampling resolution is low and cloud exists. In this study, we present a novel identifying and monitoring framework and method for Ipomoea cairica (L.) sweets based on unmanned aerial vehicle (UAV) and artificial intelligence (AI). In the proposed framework, we low-costly collected the images with 8256 × 5504 pixels of the monitoring area by the UAV and the collected images are split into more small sub-images with 224 × 224 pixels for identifying model. For identifying Ipomoea cairica (L.) sweets, we also proposed a novel deep convolutional neural network which includes 12 layers. Finally, the Ipomoea cairica (L.) sweets can be efficiently monitored by painting the area containing Ipomoea cairica (L.) sweets. In our experiments, we collected 100 raw images and generated 288000 samples, and made comparison with LeNet, AlexNet, GoogleNet, VGG and ResNet for validating our framework and model. The experimental results show the proposed method is excellent, the accuracy is 93.00% and the time cost is 7.439 s. The proposed method can achieve to an efficient balance between high accuracy and low complexity. Our method is more suitable for the identification of Ipomoea cairica (L.) sweets in the wild than other methods.


Assuntos
Aprendizado Profundo , Ipomoea , Inteligência Artificial , Ecossistema , Plantas Daninhas
13.
Chem Pharm Bull (Tokyo) ; 69(3): 291-297, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33642479

RESUMO

Alkaline hydrolysis of crude resin glycoside fraction of the seeds of Ipomoea muricata (L.) Jacq. (Convolvulaceae) yielded a new glycosidic acid, muricatic acid D; three known glycosidic acids, namely, muricatic acids A, B, and C; and three known organic acids, namely, isobutyric, 2S-methylbutyric, and 2S-methyl-3S-hydroxybutyric acid. Two new genuine resin glycosides with macrolactone structures (jalapins), muricatins X and XI, were also isolated from the fraction. Their structures were determined using spectroscopic data and chemical evidence.


Assuntos
Glicosídeos/química , Ipomoea/química , Extratos Vegetais/química , Resinas Vegetais/química , Sementes/química , Butiratos/química , Cromatografia Líquida , Convolvulaceae/química , Hidrólise , Espectroscopia de Ressonância Magnética , Estrutura Molecular , Solventes/química
14.
Molecules ; 26(4)2021 Feb 08.
Artigo em Inglês | MEDLINE | ID: mdl-33567661

RESUMO

The study was undertaken to investigate the antioxidant, genotoxic, and cytotoxic potentialities of phyto-fabricated zinc oxide nanoparticles (ZnO-NPs) from Ipomoea obscura (L.) Ker Gawl. aqueous leaf extract. The UV-visible spectral analysis of the ZnO-NPs showed an absorption peak at 304 nm with a bandgap energy of 3.54 eV, which are characteristics of zinc nanoparticles. Moreover, the particles were of nano-size (~24.26 nm) with 88.11% purity and were agglomerated as observed through Scanning Electron Microscopy (SEM). The phyto-fabricated ZnO-NPs offered radical scavenging activity (RSA) in a dose-dependent manner with an IC50 of 0.45 mg mL-1. In addition, the genotoxicity studies of ZnO-NPs carried out on onion root tips revealed that the particles were able to significantly inhibit the cell division at the mitotic stage with a mitotic index of 39.49%. Further, the cytotoxic studies on HT-29 cells showed that the phyto-fabricated ZnO-NPs could arrest the cell division as early as in the G0/G1 phase (with 92.14%) with 73.14% cells showing early apoptotic symptoms after 24 h of incubation. The results of the study affirm the ability of phyto-fabricated ZnO-NPs from aqueous leaf extract of I. obscura is beneficial in the cytotoxic application.


Assuntos
Ipomoea/metabolismo , Nanopartículas/química , Óxido de Zinco/química , Óxido de Zinco/farmacologia , Antineoplásicos/química , Antineoplásicos/metabolismo , Antineoplásicos/farmacologia , Antineoplásicos/toxicidade , Compostos de Bifenilo/química , Sequestradores de Radicais Livres/química , Sequestradores de Radicais Livres/metabolismo , Sequestradores de Radicais Livres/farmacologia , Sequestradores de Radicais Livres/toxicidade , Química Verde , Células HT29 , Humanos , Testes de Mutagenicidade , Cebolas/efeitos dos fármacos , Cebolas/genética , Picratos/química , Óxido de Zinco/metabolismo , Óxido de Zinco/toxicidade
15.
J Environ Radioact ; 231: 106554, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33631505

RESUMO

The water spinach (Ipomoea aquatica Forrsk.) is a common vegetable and a part of the staple diet in Vietnam. It has a well-known tendency for the high absorption of lead, including the radioactive isotope 210Pb. 210 Pb day to 210Po, which is one of the most toxic radioactive isotopes when ingested. Currently, there are few data available on the activity concentration or transfer parameters of water spinach grown in Vietnam. To provide this data, in this study, the 210Po activity concentrations in the soil, water and the roots, stems, and leaves of two types of spinach (grown in soil flooded with water and grown in normal soil) in Hanoi, Vietnam were determined by alpha spectrometry. The order of activity concentrations for water spinach grown in unflooded was Cstem < Cleaf < Croot, while for flooded Cstem ≈ Croot < Cleaf. The transfer factors followed a similar pattern.


Assuntos
Ipomoea , Monitoramento de Radiação , Poluentes do Solo , Bioacumulação , Polônio , Solo , Poluentes do Solo/análise , Vietnã
16.
Int J Phytoremediation ; 23(9): 982-1000, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33539712

RESUMO

The biosorption potential of cost-effective and agricultural residue, Ipomoea carnea wood (ICW) was examined by the removal of cationic dye, methylene blue (MB) from aqueous solution. The surface morphology, structural and thermal properties of untreated ICW were analyzed using Scanning Electron Microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and Thermo-gravimetric Analysis (TGA), respectively. The effects of different parameters namely concentration of biosorbent, initial pH, initial MB composition and temperature on biosorption capacity and biosorption (%) were studied. The kinetic and equilibrium models were developed to fit the experimental data on MB biosorption. The maximum biosorption capacity of 39.38 mg g-1 was obtained at 40 °C using Langmuir model. The removal of MB was found to be significantly varying with temperature. Box-Behnken design was applied to optimize the biosorption parameters. The optimized condition for MB biosorption was evaluated as dosage of 3.1 g L-1, pH of 7.04, Temperature of 49.1 °C, MB concentration of 30.48 mg L-1 and maximum biosorption (%) of 83.87. The regeneration of ICW was investigated by five cycles using a suitable eluting agent. Hence, ICW without any pretreatment and chemical modification is a potential candidate for the removal of MB in terms of availability and economy of the process.Novelty statementIpomoea carnea wood (ICW) without any pretreatment explored a potential biosorbent for the removal of methylene blue (MB) in terms of availability and economy of the process.The physico-chemical properties of ICW characterized using Scanning Electron Microscopy, Fourier transform infrared spectroscopy and Thermo-gravimetric Analysis showed ICW as a promising biosorbent for MB removal.Presence of heterogeneous with rugged morphological structure, cavities, irregular shape and size of large pores provide the better biosorption capability for MB molecules using ICW without any pretreatment or chemical modification.Analysis of kinetic and isotherm models was performed to examine the better fitness of experimental data with model. Thermodynamic parameters indicating feasible and endothermic MB biosorption.Statistical design of experiments is used to optimize the condition and corresponding maximum MB removal using Derringer's desired function methodology.Untreated ICW is a potential reusable biosorbents, effectively employed in successive biosorption and desorption process for the removal of MB from aqueous solutions.


Assuntos
Ipomoea , Poluentes Químicos da Água , Adsorção , Biodegradação Ambiental , Concentração de Íons de Hidrogênio , Cinética , Azul de Metileno , Espectroscopia de Infravermelho com Transformada de Fourier , Termodinâmica , Poluentes Químicos da Água/análise
17.
J Hazard Mater ; 405: 124025, 2021 03 05.
Artigo em Inglês | MEDLINE | ID: mdl-33129603

RESUMO

Irrigation with treated wastewater (WW) has been promoted to meet global water demands. This study investigates the occurrence and accumulation of targeted phthalic acid esters (PAEs) and antibiotics in soil and Ipomoea aquatica Forssk. irrigated with WW discharged from six hybrid constructed wetlands (HCWs), with evaluation of the associated human health risks. Results revealed that HCWs can effectively reduce the transfer of PAEs and antibiotics to soil and I. aquatica. HCW2 (VF-SF-HF) was found to be most efficient for the removal of PAEs (68.4%-95.3%) and antibiotics (28.5%-99.4%). Among the targeted PAEs, the concentration of bis (2-ethyl) hexylphthalate (DEHP) was the highest in irrigation water, soil and I. aquatica, while benzylphthalate (BBP) exhibited the highest bioconcentration factor (BCFF). Among the targeted antibiotics, the concentration of sulfapyridine (SPD) was highest in various environmental media, while norfloxacin (NFX) exhibited the highest BCFF. The properties of PAEs and antibiotics were found to be responsible for the differential uptake patterns. The estimation of the threshold of toxicological concern and hazard quotient showed that I. aquatica irrigated with HCWs treated wastewater presented a minor risk to human health. However, comprehensive safety evaluation is required for the widespread use of HCWs treated wastewater for irrigation purposes.


Assuntos
Ipomoea , Ácidos Ftálicos , Antibacterianos , China , Ésteres , Humanos , Esgotos , Áreas Alagadas
18.
New Phytol ; 229(6): 3195-3207, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33220075

RESUMO

Character displacement can play a major role in species ecology and evolution; however, research testing whether character displacement can influence the evolution of root traits in plant systems remains scarce in the literature. Here we investigated the potential that character displacement may influence the evolution of root traits using two closely related morning glory species, Ipomoea purpurea and Ipomoea hederacea. We performed a field experiment where we grew the common morning glory, I. purpurea, in the presence and absence of competition from I. hederacea and examined the potential that the process of character displacement could influence the evolution of root traits. We found maternal line variation in root phenotypes and evidence that below-ground competition acts as an agent of selection on these traits. Our test of character displacement, however, showed evidence of character convergence on our measure of root architecture rather than displacement. These results suggest that plants may be constrained by their local environments to express a phenotype that enhances fitness. Therefore, the conditions of the competitive environment experienced by a plant may influence the potential for character convergence or displacement to influence the evolution of root traits.


Assuntos
Ipomoea , Seleção Genética , Ecologia , Fenótipo
19.
J Environ Manage ; 280: 111746, 2021 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-33298398

RESUMO

Exotic invasive plants endanger the integrity of agricultural and natural systems throughout the world. Thus, the development of cost-effective and economic application of invasive plants is warranted. Here, we characterized fifteen biochars derived from five invasive plants at different temperatures (300, 500, and 700 °C) by determining their yield, ash content, pH, CEC, surface area, elementary composition, functional groups, and mineral composition. We conducted batch adsorption experiments to investigate the adsorption capacity and efficiency for Cd2+ and Cu2+ in wastewater. Our results suggest that all invasive plants are appropriate for biochar production, temperature and plant species had interacting effects on biochar properties, and the biochars pyrolyzed at 500 and 700 °C exhibited high metal adsorption capacity in neutral (pH = 7) solutions. The adsorption kinetics can be explained adequately by a pseudo-second-order model. BBC500 (Bidens pilosa L. derived biochar at 500 °C) and MBC500 (Mikania micrantha) exhibited higher metal equilibrium adsorption capacities (38.10 and 38.02 mg g-1 for Cd2+, 20.01 and 20.10 mg g-1 for Cu2+) and buffer abilities to pH than other biochars pyrolyzed at 500 °C. The Langmuir model was a better fit for IBC500 (Ipomoea cairica), MBC500, and LBC500 (Lantana camara L.) compared to the Freundlich model, whereas the opposite was true for BBC500 and PBC500 (Praxelis clematidea). These results suggest that the adsorption of metals by IBC500, MBC500, and LBC500 was mainly monolayer adsorption, while that by BBC500 and PBC500 was mainly chemical adsorption. Our results are important for the utilization and control of invasive plants as well as the decontamination of aqueous pollution.


Assuntos
Asteraceae , Bidens , Ipomoea , Lantana , Mikania , Poluentes Químicos da Água , Adsorção , Cádmio/análise , Carvão Vegetal , Espécies Introduzidas , Poluentes Químicos da Água/análise
20.
Curr Pharm Biotechnol ; 22(2): 254-261, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-32515307

RESUMO

BACKGROUND: Oleamide is an essential substance for human health. So, the plants with high oleamide content are great sources for health care products. OBJECTIVE: This study is conducted to investigate the quality of oleamide in plants and test the bioactivity in the selected two studied species. METHODS: The three Ipomoea and five Dillenia species including Ipomoea alba, Ipomoea aquatica and Ipomoea pes-caprae, and Dillenia indica, Dillenia obovata, Dillenia ovata, Dillenia parviflora and Dillenia pentagyna were investigated for the quantity of oleamide by high-performance liquid chromatography. The biological activity test was conducted on the powder formulation of the chosen plants, Dillenia ovata and Dillenia parviflora at a ratio of 30:70, for anti-inflammatory activity ex vivo on a panel of molecular targets through ion channel inhibition including voltage-gated sodium channel, voltage-gated potassium channel, and the cardiac ion as human ether-a-go-go related gene. RESULTS: The results showed that the leaf extracts of I. aquatica and D. ovata gave the highest and subsequent oleamide quantity i.e. 7.52 and 5.17 mg/g, respectively. Out of the Dillenia formulation which contained various compounds, oleamide showed the highest percentages of inhibition at 8.0-20.0%, and 6.2-14.2% in voltage-gated sodium channel, and voltage-gated potassium channel which had slightly lower values than the oleamide standard, and no effect as 0.0% value inhibition in the cardiac ion channel. CONCLUSION: The Dillenia formulation exhibits anti-inflammatory activity without affecting the heart. Accordingly, the three studied Ipomoea and three studied Dillenia species may be used for the same activity as a single component or formulation with effective solvent for disease treatments.


Assuntos
Anti-Inflamatórios/farmacologia , Dilleniaceae , Canais Iônicos/antagonistas & inibidores , Ipomoea , Ácidos Oleicos/farmacologia , Extratos Vegetais/farmacologia , Animais , Anti-Inflamatórios/isolamento & purificação , Cromatografia Líquida de Alta Pressão/métodos , Feminino , Aditivos Alimentares/isolamento & purificação , Aditivos Alimentares/farmacologia , Canais Iônicos/metabolismo , Ácidos Oleicos/isolamento & purificação , Extratos Vegetais/isolamento & purificação , Xenopus laevis
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