Erigeron Acris Research Articles

Acaricidal activity of Erigeron acer L. root against Haemaphysalis longicornis and phytochemical profiling by liquid chromatography-tandem mass spectrometry.

The present study is focused on evaluating acaricidal activity and chemical compositions of Erigeron acer root, which was identified as a promising candidate among fifteen Mongolian plant extracts tested for acaricidal activity. The acaricidal effect was evaluated against Haemaphysalis longicornis, assessed for toxicity to normal human skin fibroblast, and analyzed for its chemical constituents. The acetone extract of E. acer root showed significant activity against H. longicornis, with a lethal concentration (LC50) of 5.31 mg/mL and low toxicity, evidenced by a cytotoxic concentration (CC50) of 267.00 µg/mL. Using liquid chromatography-tandem mass spectrometry and molecular networking, thirteen natural compounds were identified, including pyrrolidines, alkaloids, fatty acids, and flavonoids, highlighting the efficacy of E. acer root extract as an effective acaricide against H. longicornis and offering insights for developing new tick control solutions.

In vitro antioxidant, anti-inflammatory activities and acetylcholinesterase inhibition properties of selected plant extracts

Plant extracts remain an infinite source of bioactive chemicals and an inexhaustible resource for discovering new drugs of natural origin. Thus, in this study, we focused on analysing 29 ethanolic extracts (E1-E29) from selected plants of flora of Poland to assess their antioxidant, anti-inflammatory and acetylcholinesterase inhibitory properties in relation to the chemical profiles of phenolic compounds. The results show that the investigated samples differed in terms of their chemical compositions and biological activities. The extract from Cirsium palustre leaves (E13) possesses the highest phenolic and flavonoid contents as well as antiradical activity in the DPPH (2,2-diphenyl-1-picrylhydrazyl) test (415.28 ± 2.22 µM of Trolox equivalent). On the other hand, the most potent anti-inflammatory agents (at 125 µg/mL) were extracts from Odontites vulgaris herbs (E24), with a COX-2 (cyclooxygenase-2) inhibition percentage of 74.54 ± 0.77, and Erigeron acris flower heads (E22), with a 15-sLOX (soybean 15-lipooxygenase) inhibition percentage of 42.45 ± 3.32. All extracts exhibited moderate acetylcholinesterase inhibitory activity. Moreover, to the best of our knowledge, the present study is the first to report phytochemical and pharmacological analyses of extracts from Anthericum ramosum and Lysimachia europaea.

Chromosome numbers in 31 taxa of Asteraceae, Brassicaceae, Poaceae, Hypericaceae, Lamiaceae, Fabaceae and Plantaginaceae from wetlands of Hamadan region in Iran

In this study, we report the somatic chromosome numbers (2n) of 31 taxa belonging to Asteraceae, Brassicaceae, Poaceae, Hypericaceae, Lamiaceae, Fabaceae and Plantaginaceae families from wetlands of Hamadan region in Iran. The chromosome numbers of about half of these species have not been reported in the previous literature. Chromosome number of Ononis spinosa counted chromosomally for the first time at the world level and the chromosome numbers of Erigeron acer, Pulicaria dysenterica, Arctium lappa, Xanthium strumarium, X. spinosum, Barbarea plantaginea, Brachypodium sylvaticum, Polypogon fugax, Prunella vulgaris and Lathyrus chloranthus, are here reported for the first time from Iran. In all taxa 2n was 12, 14, 16, 18, 20, 24, 28, 30, 32 and 42, as a diploid, tetraploid and hexaploid levels. These newly available data are further compared with those previously published for the same or related species.

Distribution of heavy metals and the exploration of potential indicators and hyperaccumulators in Jiang'an River, Chengdu, PR China

As a highly toxic contaminant, heavy metals have been proven to be widely distributed in the water and sediments of the global oceans, rivers, and lakes. Due to the functional differences in urban areas, the extent, characteristics, and hazards of heavy metal pollution in rivers are also different. To monitor and eliminate heavy metal pollution in rivers, indicators and hyperaccumulators perform crucial roles. In this study, heavy metal concentrations in the water, sediment, benthic faunae and aquatic plants of the Jiang'an River (which flows through Chengdu city, Sichuan Province, P.R. China) were investigated, followed by heavy metal correlation analysis of different media to identify potential bioindicator and hyperaccumulator. The results demonstrated that, none of the heavy metals were detected in the water. However, the 6 heavy metals in the surface sediments showed dramatic spatial regional differences, with Ni-As, Ni-Pb, Ni-Cr, Cr-Cu and Cr-Zn being highly significantly correlated. Furthermore, heavy metal contents in surface sediments were highly significantly correlated with the enrichment capacity of Eriocheir sinensis, Polypogon fugax, and Setaria viridis, and significantly correlated with Erigeron acer. Moreover, all plants were poorly enriched with Pb, which may be related to the morphology of Pb in the sediments. Besides, Eriocheir sinensis is a potential indicator of Zn and Cr in the sediments, and Erigeron acer is a possible Zn hyperaccumulator. This research confirms that heavy metals migrated in the water–sediment-benthic-plant system. Therefore, this study can provide a theoretical foundation for river monitoring and administration in Chengdu city and Sichuan Province.

×Asterron, nom. nov., a replacement name for ×Asterigeron Tzvelev, and ×Asterron ucrainicus, comb. nov.

In 1994 Tzvelev described ×Asterigeron ucrainicus Tzvelev, which he interpreted as a hybrid of Aster amellus L. and Erigeron acris L., and thus established a nothogenus ×Asterigeron Tzvelev (Aster L. × Erigeron L.). However, the name ×Asterigeron Tzvelev is a later homonym of Asterigeron Rydb.; because of that a new replacement name, ×Asterron Olshanskyi, is proposed for this nothogenus. Also, the new nomenclatural combination ×Asterron ucrainicus (Tzvelev) Olshanskyi (≡ ×Asterigeron ucrainicus Tzvelev) is validated.

Синтаксономия растительности карьеров на месте сведенных сосняков лишайниковых и зеленомошных (среднетаежная подзона европейского северо-востока России)

Синтаксономия растительности карьеров на месте сведенных сосняков лишайниковых и зеленомошных (среднетаежная подзона европейского северо-востока России)

Comparative analysis of phenolic compounds in four taxa of Erigeron acris s. l. (Asteraceae)

The aim of the present work was to investigate and compare the content of phenolic compounds in four taxa of Erigeron acris L. s. l.: E. acris (EAA), E. acris subsp. droebachiensis (O.F. Müll.) Arcang. (EAD), E. acris subsp. serotinus (Weihe) Greuter (EAS) and E. ×huelsenii Vatke (EH), a hybrid between E. acris and E. canadensis L. The total flavonoid content was determined by Christ-Müller method and the total phenolic acid content was determined by the method utilizing Arnov’s reagent. The method using ultra high performance liquid chromatography with photodiode array detection (UHPLC-PDA) was applied for the separation, identification and quantification of nine phenolic compounds (protocatechuic acid, chlorogenic acid, caffeic acid, 6′-O-caffeoylerigeroside, scutellarein-7-O-β-D-glucuronide, quercetin 3-O-glucoside, 4,5-dicaffeoylquinic acid, quercetin and luteolin) in the aerial parts of E. acris s. l. The chromatographic separation was carried out using a BEH C18 column packed with 1.7-μm particles and gradient elution with a mobile phase of water and methanol, both containing 0.02% (v/v) trifluoroacetic acid. The four investigated taxa of E. acris s. l. differed in the composition and the content of phenolic compounds. The main substances determined in the methanolic herbal extracts were: scutellarein-7-O-β-D-glucuronide (EAA, EAS, EAD and EH), 6′-O-caffeoylerigeroside (EAA, EAD and EH) and chlorogenic acid (EAS and EH). Moreover, the results indicated that five of the nine tested compounds were found in all investigated extracts from herbs of E. acris s. l. Two of them (6′-O-caffeoylerigeroside and scutellarein-7-O-β-D-glucuronide) could be selected as potential chemotaxonomic markers of the genus Erigeron L.

Синтаксономия луговой растительности Кулундинской и Касмалинской боровых лент (Алтайский край)

Синтаксономия луговой растительности Кулундинской и Касмалинской боровых лент (Алтайский край)

Male meiosis in 18 species of 07 genera of the tribe Astereae (Asteraceae) from Western Himalaya

Meiotic studies in 18 species belonging to 7 genera of the tribe Astereae from various localities of Western Himalaya have been analyzed. The chromosome number has been reported for the first time in Aster albescens (n = 9) and A. indamellus (n = 9). Further, intraspecific variability has been reported for the first time in A. thomsonii (n = 27), Bellis perennis (n = 5) and Myriactis nepalensis (n = 18). In India, the chromosome numbers are reported for first time in Aster himalaicus (n = 9), Brachyactis roylei (n = 9), Erigeron bellidioides (n = 9) and E. borealis (n = 9). B-chromosomes have been reported for the first time in Erigeron acer (n = 9 + 1 − 2B). Besides, most of the populations show laggards, chromosome stickiness and cytomixis from early prophase to telophase-II, leading to the formation of aneuploid cells or meiocytes with doubled chromosome number. Such meiotic abnormalities produce unreduced pollen grains and adversely affect pollen viability.

New and noteworthy vascular plant records from the Polish part of the Lithuanian Lakeland

Abstract This paper provides a list of 40 vascular plant species recorded in 2015–2017 in the Polish part of the Lithuanian Lakeland (north-eastern Poland), using the ATPOL cartogram method. Two native taxa Erigeron acris subsp. droebachiensis and Rorippa austriaca, one established alien Atriplex tatarica and one casual alien Aronia × prunifolia are reported as new to the flora of the region.

Distribution patterns of plant communities and their associations with environmental soil factors on the eastern shore of Lake Taihu, China

ABSTRACTIntroduction: Plant communities and soil factors might interact with each other in different temporal and spatial scales, which can influence the patterns and processes of the wetland ecosystem. To get a better understanding of the distribution of plants in wetlands and analyze their associations with environmental soil factors, the structure and types of plant communities in the eastern shore area of Lake Taihu were analyzed by two-way indicator species analysis and canonical correspondence analysis (CCA) ordination. The spatial distribution patterns of vegetation and the main factors affecting the distributions were investigated.Outcomes: Sixty-six sampling sites were selected to obtain vegetation species and soil environmental factor data. Results showed that 22 species from the 66 sites could be divided into seven communities: I: Arundo donax; II: A. donax + Phragmites australis; III: Zizania latifolia + Typha orientalis; IV: P. australis + Alternanthera philoxeroides + Polygonum hydropiper; V: P. australis; VI: P. australis + Humulus scandens; and VII: Erigeron acer + Ipomoea batatas + Rumex acetosa. Plant species and soil factors in the CCA analysis showed that I. batatas, E. acer, Chenopodium album, Polygonum lapathifolium, and Acalypha australis were mainly affected by pH, whereas Echinochloa crus-galli, Setaria viridis, and H. scandens were mainly affected by soil total phosphorus. Mentha canadensis and A. donax were mainly affected by soil conductivity, A. philoxeroides was mainly affected by soil organic matter and, Z. latifolia, Metaplexis japonica and P. hydropiper were mainly affected by available phosphorus.Conclusion:These results indicated that different plants adapted to different soil environmental factors and provided basic information on the diversity of Lake Taihu wetland vegetation.

Morphometrics and taxonomy of Erigeron acris sensu lato (Asteraceae) in Fennoscandia

Morphometric multivariate analysis has been performed based on 23 characters observed on 113 herbarium specimens from throughout Fennoscandia. This demonstrates that four taxa can be recognised within Erigeron acris L. sensu lato, viz. E. acris L. subsp. acris, E. acris subsp. decoloratus (H. Lindb.) Hiitonen, E. acris subsp. droebachiensis (O. F. Mull.) Arcang. and E. acris subsp. politus (Fr.) H. Lindb. In contrast, the previously accepted E. (acris subsp.) brachycephalus H. Lindb. is shown to be indistinguishable from E. acris subsp. droebachiensis and is accordingly treated as a synonym. The subspecies are distinguishable mainly based on indumentum characteristics, and size and pigmentaton of phyllaries and floral parts, but 21 of the 23 characters were significantly different among taxa. The largest number (ten) of significantly different characters was found between subspecies acris, droebachiensis and politus, whereas only five characters differed significantly between decoloratus and acris. The co...

Additions to vascular plant flora of the Western Suwałki Lakeland, north-eastern Poland / Suvalkų ežeringojo krašto vakarinės dalies (Šiaurės Rytų Lenkija) induočių augalų floros papildymai

Abstract The present study provides a floristic list of twenty vascular plant species recorded in 2015-2016 in the Western Suwałki Lakeland, north-eastern Poland, by using the ATPOL cartogram method. Attention is drawn to the species Camelina sativa, Geranium columbinum, Rubus corylifolius aggr., Salix ×mollissima and Vicia pannonica, which are new to the regional flora. Through this study, the distribution status of Allium vineale and Erigeron acris subsp. serotinus in the region has changed from the category of very rare taxon to the category of rare taxon. Two newly recorded species, Camelina sativa and Vicia pannonica, may become established in the Western Suwałki Lakeland in the future as agricultural weeds.

Ultra-high Performance Liquid Chromatography with Photodiode Array and Chemiluminescence Detection for the Determination of Polyphenolic Antioxidants in Erigeron acris L. Extracts.

The quality of herbs is directly related to the presence of polyphenolic antioxidants. This is the first report on the quantification of individual polyphenolic constituents of Erigeron acris L. To develop a new method using ultra-high performance liquid chromatography with photodiode array and chemiluminescence (UHPLC-PDA-CL) detection for the separation and determination of polyphenols in Erigeron acris extracts. The methanolic extracts from leaves and inflorescences of Erigeron acris were prepared by ultrasound assisted extraction. The chromatographic separation was performed on C18 column packed with 1.7-μm particles. The post-column CL detection was based on the enhancing effect of polyphenols on the CL generated in manganese(IV)-hexametaphosphate-formaldehyde system. The UHPLC method allowed to separate polyphenols in a short running time (13min), which was three times shorter compared with traditional HPLC. The CL detection was characterised by 6-48 times higher sensitivity and up to three times lower detection limits compared to PDA detection. Qualitative and quantitative differences were observed in polyphenolic composition of Erigeron acris extracts. The main components of leaves were scutellarin and chlorogenic acid, whereas in inflorescences quercetin 3-O-glucoside was predominant. Coupling of UHPLC with CL detection has been developed for the first time. This advanced chromatographic technique coupled with sensitive CL detection is a powerful approach for the investigation of polyphenolic profiles in natural products. The shorter analysis time and diminished waste generation makes the UHPLC method more environmentally friendly and more cost-effective in comparison with conventional HPLC. Copyright © 2016 John Wiley & Sons, Ltd.

The genus Conyza in Britain and a name for the hybrid between Erigeron acris and Conyza floribunda (Asteraceae)

The species of Conyza (Asteraceae) and their hybrids are briefly reviewed. A binomial name (x Conyzigeron stanleyi) is given for the hybrid between Erigeron acris L. and Conyza floribunda Kunth (including C. bilbaoana J. Rémy). The alien C. floribunda from South America has spread rapidly across Britain and Ireland since its initial records in 1992, and is now a common sight particularly in urban ruderal situations. Its hybrid with E. acris has now been found both in Ireland and several southern counties in England and is very likely to be found in further locations where both parents grow together.

<span lang="EN-US">Taxonomic revision and distribution of Erigeron acris s. l. (Asteraceae) in Poland</span>

The species Erigeron acris L. s. l. is revised in Poland. Three subspecies are recognized (E. acris subsp. acris, E. acris subsp. droebachiensis (O.F. Müll.) Arcang., and E. acris subsp. serotinus (Weihe) Greuter), a diagnostic key is provided, syntypes of two synonyms are discovered. Cauline leaves, capitula, and achenes are studied under scanning electron microscope. The updated distribution of the subspecies in Poland are presented using the ATPOL cartogram method. The distribution and hybridization are discussed.

Additional data to the occurrence of Erigeron acris subsp. serotinus (Weihe) Greuter (Asteraceae) in Europe

The paper presents 14 historical records of European-temperate Erigeron acris subsp. serotinus for Ukraine using herbarium voucher specimens deposited in two Polish herbaria KRA and KRAM. This neglected native taxon is probably frequent in western Ukraine, but its populations need to be refind.

Soil characteristics and heavy metal accumulation by native plants in a Mn mining area of Guangxi, South China

Revegetation and ecological restoration of a Mn mineland are important concerns in southern China. To determine the major constraints for revegetation and select suitable plants for phytorestoration, pedological and botanical characteristics of a Mn mine in Guangxi, southern China were investigated. All the soils were characterized by low pH and low nitrogen and phosphorus levels except for the control soil, suggesting that soil acidity and poor nutrition were disadvantageous to plant growth. In general, the studied mine soils had normal organic matter (OM) and cation exchange capacity (CEC). However, OM (8.9 g/kg) and CEC (7.15 cmol/kg) were very low in the soils from tailing dumps. The sandy texture and nutrient deficiency made it difficult to establish vegetation on tailing dumps. Mn and Cd concentrations in all soils and Cr and Zn concentrations in three soils exceeded the pollution threshold. Soil Mn and Cd were above phytotoxic levels, indicating that they were considered to be the major constraints for phytorestoration. A botanical survey of the mineland showed that 13 plant species grew on the mineland without obvious toxicity symptoms. High Mn and Cd concentrations have been found in the aerial parts of Polygonum pubescens, Celosia argentea, Camellia oleifera, and Solanum nigrum, which would be interesting for soil phytoremediation. Miscanthus floridulus, Erigeron acer, Eleusina indica, and Kummerowia striata showed high resistance to the heavy metal and harsh condition of the soils. These species could be well suited to restore local degraded land in a phytostabilization strategy.

충남 미호천 일대 약용식물의 생태적 분포

This study was analyzed and investigated to evaluate ecological distribution of medicinal plants in Miho Stream of Korea. Totality 463 taxa of vascular plants were appeared in lower part of Miho Stream. Medicinal plants were distributed 253 taxa, which were 54.6% of the total vascular plants appeared. Medicinal plants of official drug compendium(Korean pharmacopoeia) were 85 taxa. Medicinal plants were distributed most of the forest area, and followed field surrounding, stream surrounding and paddy surrounding respectively. The distribution of life form hemicryptophyte was the most frequent. Plant community of appearing area of medicinal plants was classified into Salix koreensis, Phragmites japonica, Echinochloa crusgalli, Artemisia selengensis, Miscanthus sacchariflorus, Setaria faberii, Panicum dichotomiflorum, Bidens frondosa, Humulus japonicus, Monochoria vaginalis var. plantaginea, Eleocharis kuroguwai, Erigeron acris, Pinus densiflora, Pinus rigida, Quercus acutissima, Quercus serrata, Robinia pseudoacacia and Castanea crenata community. Medicinal plants in plant communities that occur frequently were Humulus japonicus, Corylus heterophylla and Liriope spicata.

In vitro Antiproliferative and Antifungal Activity of Essential Oils from Erigeron acris L. and Erigeron annuus (L.) Pers.

Antiproliferative and antifungal activities of essential oils from Erigeron acris root and herb and from Erigeron annuus herb were investigated. The cell viability assay was performed in cultured fibroblasts, cancer cell lines (MCF-7 and MDA-MBA-231), and endometrial adenocarcinoma (Ishikawa) cells as well as colon adenocarcinoma (DLD-1) cells using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT). The essential oil from E. acris root showed the highest antiproliferative activity in the MCF-7 cell line with an IC50 value of 14.5 microg/mL. No effect of the essential oil on normal cells at that concentration was found. Antifungal activity against various strains of five Candida species, i.e. C. albicans, C. glabrata, C. tropicalis, C. krusei, and C. parapsilosis, was tested by the microdilution method. It was found that all examined oils can be useful as antifungal agents against the above-mentioned species, but the essential oil of E. acris herb was the most active. Their minimum inhibitory concentrations (MIC) ranged from 30 to 0.4 microL/mL. The data presented suggest that essential oils from E. acris and E. annuus possess antifungal activity against Candida spp. and antiproliferative activity against breast cancer MCF-7 cells.