Allium paniculatum

Abstract: Allium paniculatum L. is commonly recorded from the Euro‐Mediterranean and Irano‐Turanian regions. Evidence from literature and herbarium collections revealed that many different taxa of A. sect. Codonoprasum Rchb., all characterized by big size, diffuse and densely flowered umbrella, very long spathe valves, long pedicels, and cylindrical‐campanulate perigon, have been wrongly attributed to this species thus affecting records on its geographic distribution and morphological characterization. In order to define the true identity of A. paniculatum, we analyzed specimens coming from the type locality (Don River), and provided details on morphology, ecology, karyology, leaf anatomy, seed morphology and seed coat micro‐sculpturing. Taxonomic and phylogenetic relationships with related species of sect. Codonoprasum and with other taxa of different sections were investigated by means of morphological characters and molecular data from the internal transcribed spacers (ITS) nrDNA and the trnH‐psbA cpDNA region. Maximum parsimony and Bayesian inference analyses of molecular data recovered two main clades in A. sect. Codonoprasum and clearly separated A. paniculatum from related taxa. The taxonomic implications of these patterns of relationships are discussed. To our knowledge, this is the first study documenting in‐depth phylogenetic relationships within A. sect. Codonoprasum.

Abstract: This study aimed to compare the phenolic profiles, enzyme inhibitory activity and antioxidant activity of the bulb, stem and flower parts of Allium paniculatum subsp. villosulum and Allium paniculatum subsp. paniculatum. The total phenolic and flavonoid contents of the extracts were spectrophotometrically determined, and the bulb (21.88 mg GAE/g extract) and flower (2.89 mg QE/g extract) parts of A. paniculatum subsp. villosulum were detected with the highest levels. Quantification of selected phenolic compounds was performed using LC–ESI–MS/MS, and p-coumaric acid (981.9, 952.6 μg/gram extract) was the major compound of both plants. Antioxidant properties of the extracts were evaluated in terms of radical scavenging (DPPH, ABTS) and reducing power (CUPRAC, FRAP) activities, and the highest values were observed in the bulb parts of the plants. Acetylcholinesterase, butyrylcholinesterase and tyrosinase inhibitory activities of the extracts were determined using a 96-well microplate reader. The flower (IC50 11.72 and 8.43 µg/ml) and stem parts (IC50 49.16 µg/ml) of A. paniculatum subsp. villosulum were the most potent samples. In addition, the results of the analyses were further evaluated and verified by principal component analysis. Conclusively, the variation and correlation of the bioactive compounds and biological activities of the different parts of both Allium species were investigated with the present research.

Abstract: A reciprocal translocation was found with a high frequency (average 44.44%) in four natural populations of Allium paniculatum L. (Liliaceae) from the South of Spain. The chromosomes involved are 1 ...