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136 results for “Portulaca”
FIGURE 3. Portulaca ragonesei. A in Rediscovery of a halophytic endemic and rare species of Portulaca (Portulacaceae) from central Argentina: morphology and its phylogenetic position
FIGURE 3. Portulaca ragonesei. A. Habit; B. Young sprout; C. Flower buds; D. Flower, lateral view; E. Flower, upper view; F. Stigma; G. Pixidia (one fruit complete and the others without the operculum); H. Seed. Drawn by L. Ribulgo.
FIGURE 2 in Rediscovery of a halophytic endemic and rare species of Portulaca (Portulacaceae) from central Argentina: morphology and its phylogenetic position
FIGURE 2. Morphology of Portulaca ragonesei. A. Taproot; B. Leaves; C. Buds; D. Flower, lateral view; E. Flower showing calyx; F. Flower, longitudinal section; G. Flower, upper view; H. Fruit; I. Post-dehiscent fruits. J. Seed.
FIGURE 4 in Rediscovery of a halophytic endemic and rare species of Portulaca (Portulacaceae) from central Argentina: morphology and its phylogenetic position
FIGURE 4. Evolutionary relationships of Portulaca ragonesei. Bayesian allcompat tree from analysis of a combined data matrix of ITS, ndhF, psbD-trnT spacer, and ndhA intron sequences. A black arrow shows the position of P. ragonesei in the phylogeny.
FIGURE 1 in Rediscovery of a halophytic endemic and rare species of Portulaca (Portulacaceae) from central Argentina: morphology and its phylogenetic position
FIGURE 1. Distribution map of Portulaca ragonesei. A. Cuenca Saliniana (Córdoba, Argentina). B. Halophytic bushland in Salina of Ambargasta. C. Habit of P. ragonesei.
FIGURE 3 in Taxonomic reexamination of Portulaca okinawensis (Portulacaceae) in the Ryukyu Archipelago of Japan based on molecular and morphological data
FIGURE 3. Flowering plants of Portulaca okinawensis from the Ryukyus. A. Amami Island (AM1). B. Amami Island (AM3). C. Tokuno-shima Island. D. Okinawa Island (OK1). E. Okinawa Island (OK2). F. Okinawa Island (OK4). G. Tonaki Island (TK). H. Aka Island (AK). Scale bar in H also applies to A–G, and indicates 5 mm (see the Table 1 for the localities abbreviations).
FIGURE 2. Bayesian phylogenetic tree for 60 in Taxonomic reexamination of Portulaca okinawensis (Portulacaceae) in the Ryukyu Archipelago of Japan based on molecular and morphological data
FIGURE 2. Bayesian phylogenetic tree for 60 OTUs of Portulaca with three outgroups based on internal transcribed spacer (ITS) sequence. The topology of the maximum parsimony (MP) strict consensus tree was highly compatible with the Bayesian tree. Bayesian posterior probabilities (left) and bootstrap percentages in the MP analysis (right) are shown [see the Table 1 for the localities collection of the four ITS types (A–D) of P. okinawensis].
FIGURE 1 in Taxonomic reexamination of Portulaca okinawensis (Portulacaceae) in the Ryukyu Archipelago of Japan based on molecular and morphological data
FIGURE 1. Map of the Ryukyus showing 12 localities on six islands of Portulaca okinawensis and four localities of P. psammotropha in Taiwan. Broken lines circle the islands of the Amami Islands and the Okinawa Islands (see Table 1 for abbreviations for collection localities).
FIGURE 3 in Seed morphology of Portulaca (Portulacaceae) in Cuba and taxonomic implications
FIGURE 3. Variation of length/width ratio and shape of Portulaca seeds in Cuba. For each species in a boxplot the mean, the 95% confidence intervals (estimated by Monte Carlo using 10,000 randomizations) and the 95% range for the central data are presented; to the left of the boxplot the point cloud is shown and to the right its density curve.
FIGURE 1. Portulaca seed general scheme, lateral view. A in Seed morphology of Portulaca (Portulacaceae) in Cuba and taxonomic implications
FIGURE 1. Portulaca seed general scheme, lateral view. A. Length and width of the seed. B. Regions and parts of the seed.
FIGURE 4 in Seed morphology of Portulaca (Portulacaceae) in Cuba and taxonomic implications
FIGURE 4. Portulaca seeds in Cuba, scanning electron photomicrographs in lateral view. Scale bars: 400 μm. A. P. biloba (Roig SV- 23304). B. P. brevifolia (morphotype "brevifolia") (Bisse et al. HFC-47572-A). C. P. brevifolia (morphotype "brevifolia") (Acuña & Schubert SV-19133). D. P. brevifolia (morphotype "nana") (Acuña SV-13494). E. P. brevifolia (morphotype "nana") (Acuña & López- Figueiras SV-21375). F. P. cubensis (León LS-15618). G. P. elatior (Bisse et al. HFC-46852). H. P. halimoides (Herrera & Menéndez SV-30332).
FIGURE 6 in Seed morphology of Portulaca (Portulacaceae) in Cuba and taxonomic implications
FIGURE 6. Portulaca seeds in Cuba, scanning electron photomicrographs in lateral view. Scale bars: 400 μm. A. P. teretifolia (García- Beltrán & de Vales HFC-89639). B. P. tuberculata (León LS-16360). C. P. tuberculata (Bisse et al. HFC-47582). D. P. umbraticola (Barrios et al. HFC-89614). E. P. umbraticola (Acuña & Barris SV-20363). F. P. umbraticola (Acuña et al. SV-20485 p.p.).
FIGURE 8 in Seed morphology of Portulaca (Portulacaceae) in Cuba and taxonomic implications
FIGURE 8. Peripheral face of Portulaca seeds in Cuba, scanning electron photomicrographs in dorsal view. Scale bars: 100 μm. A. P. biloba (Roig SV-23304). B. P. brevifolia (morphotype "brevifolia") (Acuña & Schubert SV-19133). C. P. brevifolia (morphotype "nana") (Acuña SV-13494). D. P. cubensis (León LS-15707). E. P. elatior (León LS-21100). F. P. halimoides (Herrera & Menéndez SV-30332). G. P. oleracea (morphotype 1) (Acuña et al. SV-20485 p.p.). H. P. oleracea (morphotype 2) (García-Beltrán & Barrios s.n.). I. P. oleracea (morphotype 3) (Meyer & Günther HFC-54814). J. P. oleracea (morphotype 4) (García-Beltrán s.n.). K. P. oleracea (morphotype 5) (Bisse et al. HFC-47661). L. P. pilosa (García-Beltrán s.n.). M. P. pilosa (Quintana et al. HFC-34165-B). N. P. quadrifida (Hioram 6376). O. P. rubricaulis (García-Beltrán et al. HFC-89626). P. P. rubricaulis (León LS-15586). Q. P. teretifolia (León & Acuña LS-13081). R. P. teretifolia (García-Beltrán & de Vales HFC-89639). S. P. tuberculata (Acuña & Roig ROIG-9182). T. P. umbraticola (Acuña & Barris SV-20363). U. P. umbraticola (Acuña et al. SV-20485 p.p.).
FIGURE 7 in Seed morphology of Portulaca (Portulacaceae) in Cuba and taxonomic implications
FIGURE 7. Cells from the lateral face of Portulaca seeds in Cuba, scanning electron photomicrographs in lateral view. Scale bars: 50 μm. A. P. biloba (Ekman 109020). B. P. brevifolia (morphotype "brevifolia") (García-Beltrán et al. HFC-89641). C. P. brevifolia (morphotype "brevifolia") (Bisse et al. HFC-47572-A). D. P. brevifolia (morphotype "nana") (HFC-s.n.). E. P. cubensis (León LS-15707). F. P. elatior (León LS-21100). G. P. halimoides (Herrera & Menéndez SV-30332). H. P. oleracea (morphotype 1) (Acuña et al. SV-20485 p.p.). I. P. oleracea (morphotype 2) (García-Beltrán & Barrios s.n.). J. P. oleracea (morphotype 3) (Meyer & Günther HFC-54814). K. P. oleracea (morphotype 4) (García-Beltrán s.n.). L. P. oleracea (morphotype 5) (Bisse et al. HFC-47661). M. P. pilosa (García-Beltrán s.n.). N. P. quadrifida (Hioram 6376). O. P. rubricaulis (García-Beltrán et al. HFC-89626). P. P. teretifolia (León & Acuña LS-13081). Q. P. teretifolia (García-Beltrán et al. HFC-89635). R. P. tuberculata (Acuña & Roig ROIG-9182). S. P. tuberculata (Bisse et al. HFC-47582). T. P. umbraticola (León LS-15654). U. P. umbraticola (Acuña et al. SV-20485 p.p.).
Fig. 5 in Catecholic alkaloid sulfonates and aromatic nitro compounds from Portulaca oleracea and screening of their anti-inflammatory and anti-microbial activities
Fig. 5. Possible biosynthetic pathway for the nitro derivatives, catecholic alkaloids and their sulfonates from P. oleracea (DDC: dopa decarboxylase; RNS: reactive nitrogen species; TH: tyrosine hydroxylase).
Fig. 6 in Catecholic alkaloid sulfonates and aromatic nitro compounds from Portulaca oleracea and screening of their anti-inflammatory and anti-microbial activities
Fig. 6. Dose-dependent inhibition of nitro derivative 12 against LPS-induced NO production in RAW 264.7 macrophage cells (n = 3) (****p <0.0001, versus vehicle control, ####p <0.0001, versus LPS-treated model, 3,4-dihydroxy-benzohydroxamic acid (Didox) was used as the positive control with IC value of 70 μM).
Fig. 4 in Catecholic alkaloid sulfonates and aromatic nitro compounds from Portulaca oleracea and screening of their anti-inflammatory and anti-microbial activities
Fig. 4. Calculated and experiment ECD of compounds 4, 10–11, 15–17 and their possible stereostructures
Figure 2 from: Voynikov Y, Gevrenova R, Zheleva-Dimitrova D, Balabanova V, Nikolova I, Marinov L, Benbassat I, Momekov G (2023) UHPLC-Orbitrap screening of oleraindoles in hydromethanolic extracts of Portulaca oleracea. Pharmacia 70(4): 1521-1527. https://doi.org/10.3897/pharmacia.70.e113577
Figure 2 MS2 spectra and fragmentation analysis of the three basic HCA-I conjugates in negative ionization mode. The characteristic difference of 149.048 Da, indicating a neutral loss of the 5,6-dihydroxyindole is indicated. The fragment ion corresponding to 5,6-dihydroxyindole is 148.04 m/z.
Figure 3 from: Voynikov Y, Gevrenova R, Zheleva-Dimitrova D, Balabanova V, Nikolova I, Marinov L, Benbassat I, Momekov G (2023) UHPLC-Orbitrap screening of oleraindoles in hydromethanolic extracts of Portulaca oleracea. Pharmacia 70(4): 1521-1527. https://doi.org/10.3897/pharmacia.70.e113577
Figure 3 Proposed fragmentation behavior and diagnostic fragment ions of the basic components of oleraindoles: 5,6-dihydroxyindole, and coumaroyl, caffeoyl, and feruloyl moieties. (A): negative ionization mode; (B): positive ionization mode.
Figure 1 from: Voynikov Y, Gevrenova R, Zheleva-Dimitrova D, Balabanova V, Nikolova I, Marinov L, Benbassat I, Momekov G (2023) UHPLC-Orbitrap screening of oleraindoles in hydromethanolic extracts of Portulaca oleracea. Pharmacia 70(4): 1521-1527. https://doi.org/10.3897/pharmacia.70.e113577
Figure 1 Workflow chart of the study. The hydromethanolic extract of purslane was subjected to UHPLC-HRMS with subsequent MS2 analysis. After the raw data files were transformed with MSconvert, the data filtering (DIF and DDF) were performed either with MS2Analyzer, MZmine and the in-house R script. The scans that fell within 1.5% retention time threshold and 15 ppm m/z treshold were grouped, as belonging to the same substance. Then, the obtained list of possible oleraindole structures were manually inspected with the Xcalibur software.
Supplementary material 2 from: Voynikov Y, Gevrenova R, Zheleva-Dimitrova D, Balabanova V, Nikolova I, Marinov L, Benbassat I, Momekov G (2023) UHPLC-Orbitrap screening of oleraindoles in hydromethanolic extracts of Portulaca oleracea. Pharmacia 70(4): 1521-1527. https://doi.org/10.3897/pharmacia.70.e113577
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