Rhus Typhina Research Articles

First Report of Leaf Wilt Caused by Cuscuta japonica on Generally Insusceptible Host Plant Rhus typhina in China

First Report of Leaf Wilt Caused by <i>Cuscuta japonica</i> on Generally Insusceptible Host Plant <i>Rhus typhina</i> in China

Single and Combined Effects of Cadmium and Lead on Seed Germination and Early Seedling Growth in &lt;i&gt;Rhus typhina&lt;/i&gt;

Single and Combined Effects of Cadmium and Lead on Seed Germination and Early Seedling Growth in &lt;i&gt;Rhus typhina&lt;/i&gt;

Restoration of soil carbon with different tree species in a post-mining land in eastern Loess Plateau, China

Vegetation restoration tends to enhance soil carbon storage in severely degraded lands, which is of great significance to mitigate climate change. In this study, soil organic carbon, inorganic carbon and soil properties were investigated in a restored post-mining area in Shanxi province, eastern Loess Plateau. Through artificially planting Rhus typhina, Quercus liaotungensis and Pinus tabuliformis (referred to as RT, QL and PT, respectively), soil water and total nitrogen contents increased significantly. Soil organic carbon in restored sites increased by 101.9% compared with that of a non-restored site. Accumulation of litter and withered root with vegetation succession led to the increases of input of organic matter, which was beneficial to improve soil organic carbon storage. QL had significantly higher organic carbon sequestration rate (1.59 t ha−1 yr−1) than those of other tree species, which might be attributed to higher nitrogen content and litter input. Soil inorganic carbon accounted averagely for 70.1% of the total carbon storage. However, re-vegetation had no significant influence on soil inorganic carbon which was closely related with soil parent material and climate. Our results suggested that abandoned mine lands might serve as C sinks through appropriate restoration management. Indigenous QL would be suitable to be recommended as the preferred species for reclamation management of degraded lands. Because of a short duration of restoration, the dynamics of soil inorganic carbon during vegetation succession needs to be further studied to reveal potential C sequestration mechanism in arid and semi-arid regions.

Study on the structure of Rhus typhina secondary phloem and resin canals

Study on the structure of Rhus typhina secondary phloem and resin canals

A modified DAEM: To study the bioenergy potential of invasive Staghorn Sumac through pyrolysis, ANN, TGA, kinetic modeling, FTIR and GC–MS analysis

Biomass is deemed to be an important contributor to satisfy our energy, chemicals and material requirements throughout the world. The present study aimed to study the bioenergy potential of Staghorn Sumac (SS) through modified distributed activation energy model (DAEM), kinetic models, thermogravimetric analyzer, elemental analyzer, Fourier transform infrared spectrometry (FTIR) and gas chromatography-mass spectrometry (GC–MS). Pyrolysis experiments were carried out at the different heating rates of 10, 20, 30 and 40 °C min−1 to study kinetics. The average activation energy values achieved through DAEM, KAS, FWO and Starink models were 160, 167, 169, and 168 kJ mol−1, respectively. Additionally, an Artificial Neural Network (ANN) model was equated with modified DAEM. Moreover, The composition of evolved gas compound measured by a gas chromatography coupled with mass spectroscopy showed that bio-oil mainly consisted of 82.33% acid, 6.37% aldehyde and ketone, 4.96% amid, 2.76% ester, 2.07% aromatic and alcohols, and 1.52% other groups. This study has revealed the remarkable potentials of Staghorn Sumac for clean bioenergy production.

PECULIARITIES OF INTRODUCTION OF SMALL-WIDENED DECORATIVE TYPES IN THE CONDITIONS OF THE LADYZHYN DENDROPARK

The floristic analysis of the low-frequency ornamental species of the arboretum «Ladyzhyn Dendropark» was carried out, according to which the taxonomic composition and the description of the investigated species of the arboretum were determined. Based on the results of the integrated numerical assessment of the viability of trees and shrubs based on visual observations, the prospects for the introduction of woody plants in the study region were evaluated. The species composition of the introduced ornamental plants of the arboretum is systematized, which today is more than 25 species, arranged in accordance with the formed dendroplan. The peculiarities of the introduction of low-abundant ornamental plants were investigated, and the inventories of native and introduced arboreal and shrub vegetation of the areas of the arboretum were conducted. Based on these studies, a dendroplan was developed for a dendrological park of the local importance. The age and quantitative structure of the plantations has been determined, according to which 21 composite areas have been created in the studied area of more than 10 ha. In the course of research it is determined that 9 species of plants are quite promising (Catalpa speciosa Warder., Nyssa sylvatica Marsh, Gymnocladus dioicus (L.) K.Koch, Liriodendron tulipifera L., Magnolia kobus DC., Liquidambar styraciflua L., Malus sieboldii, Pseudotsuga menziesii (Mirb.) Franco, Ginkgo biloba L. Betula nigra L); promising – 10 species (Zelkova serrata (Thunb.) Makino, Stephanandra incisa (Thunb.) Zabel, Koelreuteria bipinnata Franch., Magnolia soulangeana Soul, Rhus typhina L., Catalpa bignonioides, Chamaecyparis pisifera (Siebold &amp; Zucc.) Endl., Malus «Evereste», Malus domestica «Rajka», Diospyros virginiana L.), less promising – 5 species (Paulownia tomentosa (Thunb.) Steud., Cercis siliquastrum L., Magnolia George Henry Kern, Coffea liberica (W. Bull ex Hiern), Magnolia acuminata L.) The low adaptive index of the last 5 species is related to the inconsistency of the temperature regime in the study conditions. Inventory of the assortment of 20 shrubs and arboretum plants was made and a design decision was made to increase the species and form content of arboretum of section No. 21. The current state of compositions and flower beds of the arboretum was analyzed and recommendations for their improvement on the principle of selection and placement of species were presented. Keywords: dendropark, introduction, compositions, flower beds, integral evaluation, taxonomic composition, decorative properties, systematic principle, exotics.

Effects of invasive Rhus typhina L. on bacterial diversity and community composition in soil

ABSTRACT Rhus typhina L., an exotic plant that is widely distributed in China, is harmful to native ecosystems; however, little is known about its effects on soil microbial communities. Therefore, we investigated the effects of R. typhina on soil bacterial communities by 16S rRNA gene sequencing and compared the effects of R. typhina and native (Rhus chinensis Mill.) and non-invasive exotic species (Amorpha fruticosa L. and Robinia pseudoacacia L.) on soil bacterial communities via a greenhouse experiment. R. typhina decreased the diversity of the soil bacterial community compared with R. chinensis, and A. fruticosa. R. typhina soil was characterized by more Actinobacteria and lesser Proteobacteria and Acidobacteria than the other soils. Among Actinobacteria members, there was a difference in the relative abundance of Nocardioides and Streptomyces, and this could be advantageous for the growth of R. typhina. However, there was no significant difference in the soil bacterial community structure associated with R. typhina and other species. Moreover, the concentrations of total carbon, potassium, and nitrate were found to be the major soil factors influencing the relative abundance of soil bacteria.

Efficacy of invasive alien plants in controlling Arionidae slugs

Aim of study: To develop an alternative slug control method, we explored the use of plant material from seven invasive plant species against Arion slugs.Area of study: The experiments were performed at the University of Ljubljana (Slovenia).Material and methods: In laboratory (exp. A-C) and semi-field studies (exp. D), we investigated the contact and barrier efficacy of plant material (powder or liquid formulation) of seven invasive plant species (Japanese knotweed, bohemian knotweed, Canadian goldenrod, giant goldenrod, staghorn sumac, tree of heaven, and false indigo) against Arion slugs. In order to test a contact efficacy of the substance (exp. A), slugs were rolled in a plant material powder. In exp. B, powder made from a plant material was used as a barrier for slugs. Antifeedant effect of the slugs was tested in exp. C, where lettuce leaves were treated with a liquid formulation of a plant material. In exp. D, all above mentioned techniques were used in a semi-field trial.Main results: The results of our studies showed that the plant material of staghorn sumac, giant goldenrod, and Japanese knotweed showed the strongest anti-feedant and barrier effects against the slugs. In the semi-field trial, only 7% of the plants treated with giant goldenrod plant material were attacked by slugs.Research highlights: A contact efficacy of plant powders against Arion slugs was not confirmed in our investigation. Furthermore, several plant powders (goldenrods, staghorn sumac) showed good barrier efficacy. A semi-field trial showed that plant material (giant goldenrod) could represent an alternative solution in slug control.

Plastome structure and phylogenetic position of Rhus typhina (Anacardiaceae)

Rhus typhina, commonly called staghorn sumac, is native to North America and is widely planted as an ornamental deciduous shrub all over the temperate region. In this study, the complete chloroplast genome (plastome) of R. typhina was determined using genome-skimming method. The complete plastome of staghorn sumac was 160,204 bp in length with a canonical quadripartite structure, including a large single-copy region of 87,789 bp, a small single-copy region of 19,319 bp, and a pair of inverted repeats regions of 26,548 bp each. A total of 113 unique genes were annotated in this plastome, including 79 protein-coding genes, 30 tRNA genes, and 4 rRNA genes. The overall guanine-cytosine (GC) content was 37.8%. As shown in the ML phylogenetic tree, R. typhina was closely related to R. chinensis, and Rhus was sister to Pistacia within Anacardiaceae famliy.

Increased soil moisture aggravated the competitive effects of the invasive tree Rhus typhina on the native tree Cotinus coggygria

BackgroundInvasive exotic species have caused significant problems, and the effects of extreme precipitation and drought, which might occur more frequently under the global climate change scenarios, on interspecific relationship between invasive and native species remain unclear.ResultsWe conducted a greenhouse experiment with three soil water levels (30–40%, 50–60%, and 70–80% of field capacity) and two cultivation treatments (monoculture pots, one seedling of either species and mixture pots, one seedling of each species) to investigate soil water content effects on the relationship between invasive Rhus typhina and native Cotinus coggygria. Rhus typhina had lower height but bigger crown area than C. coggygria in the monoculture treatment. Rhus typhina had higher height, bigger crown area and total biomass than C. coggygria in the mixture treatment. Drought decreased the growth parameters, total chlorophyll concentration, and leaf biomass, but did not change gas exchange and other biomass parameters in R. typhina. The growth parameters, leaf area index, biomass parameters, total chlorophyll concentration, and net photosynthetic rate of C. coggygria decreased under drought conditions. The log response ratio (lnRR), calculated as ln (total biomass of a target plant grown in monoculture/total biomass of a target plant grown in mixed culture), of R. typhina was lower than that of C. coggygria. The lnRR of R. typhina and C. coggygria decreased and increased with increase in soil water content, respectively.ConclusionsRhus typhina has greater capacity to relatively stable growth to the drought condition than C. coggygria and has strong competition advantages in the mixture with C. coggygria, especially in the drought condition. Our study will help understand the causes of invasiveness and wide distribution of R. typhina under various moisture conditions and predict its expansion under climate change scenarios.

GC-MS analysis and biological activity of hydroalcholic extracts and essential oils of Rhus typhina L. wood (anacardiaceae) in comparison with leaves and fruits

Hydroalcoholic extracts (HE) and essential oils (EO) of branches, leaves and fruits of Rhus typhina L., were characterized by GC-MS. HE (yealds: branches 68.30 mg/g, leaves 35.82 mg/g and fruits 257.76 mg/g), showed different compositions dominated by gallic acid (33.46%) in branches, its precursor 1-cyclohexane-3,4,5-hydroxy-carboxylic acid (20.55%) in leaves and malic acid (89.15%) in fruits. EO yields were 210 µg/g for branches (main component δ-cadinene, 22.00%), followed by fruits with 132 µg/g (β-pinene 32.2%) and by leaves with 54 µg/g and phenylacetaldehyde as major component (40.13%). Total phenolic content (TPC) was highest in branches HE (5.87 µg GAE/mL) and in EO leaves (17.71 µg GAE/mL). The highest value of radical scavenging activity (DPPH test) was detected in leaves HE and EO. The branches EO antimicrobial activity was strong against C. albicans and negligible against E. coli. Leaves and fruits EO showed strong activity against C. albicans and intermediate activity against Escherichia coli.

Variability of leaf functional traits of invasive tree Rhus typhina L. in North China

Variability of leaf functional traits of invasive tree Rhus typhina L. in North China

Staghorn Sumac (Rhus typhina): A New Bioindicator to Detect Phytotoxic Levels of Ambient Ozone in the Eastern United States

In our air pollution studies at The Pennsylvania State University, we have successfully used Prunus serotina (Black Cherry), Asclepias syriaca (Common Milkweed), Apocynum androsaemifolium (Spreading Dogbane), and Ailanthus altissima (Tree-of-Heaven) as ozone-sensitive bioindicators to detect phytotoxic levels of ambient ozone. However, ambient ozone concentrations have decreased in our study area, and we are seeking a more sensitive bioindicator species. We observed significant levels of ambient ozone-induced leaf injury (stipple) on native Rhus typhina (Staghorn Sumac) within a field in a central Pennsylvania, suggesting that this species might serve as a new and highly sensitive ozone bioindicator. Therefore, we conducted a preliminary survey to determine the incidence and severity of ozone-induced stipple on Staghorn Sumac. In the same location, we concurrently evaluated the level of foliar stipple on the ozone-sensitive bioindicator species listed above. Staghorn Sumac developed significantly greater ozone-induced symptoms than the other bioindicators and has potential to serve as a bioindicator to detect phytotoxic levels of ambient ozone in the eastern US.

Optimization, Transesterification and Analytical Study of Rhus typhina Non-Edible Seed Oil as Biodiesel Production

Production of biodiesel from non-edible oils is one of the effective methods to reduce production costs and alleviate the obstacle of traditional raw material supply. Rhus typhina L. (RT) is a promising non-edible plant because it grows fast and has abundant seeds. But previously reported oil content of RT was only 9.7% and 12%. Further research into improving the biodiesel production of RT seed oil is urgently needed. Here we obtained the biodiesel production of RT with a maximum oil content of 22% with a low free fatty acid content of 1.0%. The fatty acid methyl ester (FAMEs) of the RT seed oil was produced by a standard optimized protocol use KOH as a catalyst with the highest yield of 93.4% (w/w). The quality and purity of RT FAMEs, as well as the physio-chemical characterizations of the biodiesel products, were investigated and compared with the international standard of ASTM D6751 and EN 14214. The values of fuel properties are comparable with mineral diesel and environmentally friendly. Overall, the proposed RT seed oil could be a potential source of raw materials for producing high-quality biodiesel after the optimization and transesterification.

Tannins, novel inhibitors of the volume regulation and the volume-sensitive anion channel

Abstract The volume-sensitive outwardly rectifying anion channel (VSOR) is a key component of volume regulation system critical for cell survival in non-isosmotic conditions. The aim of the present study was to test the effects of four tannin extracts with defined compositions on cell volume regulation and VSOR. Preparation I (98% of hydrolysable tannins isolated from leaves of sumac Rhus typhina L.) and Preparation II (100% of hydrolysable tannins isolated from leaves of broadleaf plantain Plantago major L) completely and irreversibly abolished swelling-activated VSOR currents in HCT116 cells. Both preparations profoundly suppressed the volume regulation in thymocytes with half-maximal effects of 40.9 μg/ml and 12.3 μg/ml, respectively. The inhibition was more efficient at lower concentrations but reverted at higher doses due to possible non-specific membrane-permeabilizing activity. Preparations III and IV (54,7% and 54.3% of hydrolysable tannins isolated, respectively, from roots and aboveground parts of Fergana spurge Euphorbia ferganensis B.Fedtch) inhibited VSOR activity in a partially reversible manner and suppressed the volume regulation with substantially higher half-maximal doses of 270 and 278 μg/ml, respectively, with no secondary reversion at higher doses. Hydrolysable tannins represent a novel class of VSOR channel inhibitors with the capacity to suppress the cell volume regulation machinery.

Vegetation type and plant diversity affected soil carbon accumulation in a postmining area in Shanxi Province, China

AbstractCoal mining causes severe land degradation, which poses a great damage to carbon (C) sequestration function of the original ecosystem. Vegetation restoration in postmining areas plays an important role in rebuilding soil C pool and improving soil quality. In this study, soil C sequestration and soil properties of different vegetation types were investigated along restoration chronosequences in a postmining area in the eastern Loess Plateau. The results showed that soil properties improved substantially through artificial restoration by planting Rhus typhina (exotic species) and Platycladus orientalis (indigenous species) and through natural restoration. Soil C stock (0–20 cm depth) increased significantly with restoration duration in all of the vegetation types and was positively correlated to plant diversity except in R. typhina. After 12–20 years from restoration, accumulation rates of soil C varied significantly with vegetation type, with the maximum in P. orientalis (0.60 Mg ha−1 yr−1) and the minimum in naturally restored grassland (0.21 Mg ha−1 year−1). The optimum performance of P. orientalis plantation could be attributed mainly to high plant diversity and associated high fine root biomass (1.72 Mg ha−1). A sharp decrease of plant diversity (39.0%) in R. typhina 12 years after restoration implied that soil C accumulation might not be sustainable in the long term. Our results suggest that P. orientalis as an indigenous species adaptable to harsh environment may facilitate the succession of a diverse ecosystem and promote soil C accumulation in degraded lands of postmining areas.

Life history and host range determination of Paectes n. sp. – a potential classical biological control agent of Brazilian peppertree in the United States

ABSTRACTThe life history and host range of the South American defoliator Paectes n. sp. (Lepidoptera: Euteliidae) was evaluated to determine its suitability for classical biological control of invasive Brazilian peppertree, Schinus terebinthifolia, in the U.S.A. The genus Paectes is well represented in both Florida and South America. We used DNA barcoding to assign our Paectes collections to species. However, this method did not match any known species of this genus. Larvae were collected feeding on the target weed in Brazil in June 2015 and were colonised under quarantine with mating pairs. Larval no-choice host range tests were conducted on nine members of the family Anacardiaceae, including native, ornamental, and commercial species. Larvae completed development on all species except Anacardium occidentale and Mangifera indica, although survival and development time differed significantly among species. Multiple generation testing was conducted using survivors of no-choice tests. Non-target species Schinus molle, Rhus typhina, and Cotinus coggygria produced F1 adults, although only the target weed produced F2 adults. The results of the testing suggest that although Paectes n. sp. is only capable of completing multiple generations on the target weed, Paectes larvae consume and complete at least one generation on a number of native and commercial Anacardiaceae species. Due to its relatively broad host range, and because congener species feed on the weed in the invaded range, Paectes n. sp. will not be developed as a classical biological control of Brazilian peppertree in the U.S.A.

Effects of rhus typhina and robinia pseudoacacia on physicochemical properties of saline soil in Dagang Area, Tianjin

In order to explore the effect of using two different afforestation tree species to improve soil in coastal saline-alkali land, the method of combining field sampling and indoor analysis and test was adopted. The physical and chemical properties of soils planted with Rhus typhina and Robinia pseudoacacia forest were determined. The results showed that afforestation could improve soil structure, decrease soil bulk density and increase soil fertility. To reduce soil salinization, the soil physical and chemical indexes of Robinia pseudoacacia plantation were better than those of growing Rhus typhina forest, so the planting area of Robinia pseudoacacia plantation in Dagang area could be increased. Planting Rhus typhina forest could also improve the soil in this area, but its effect was lower than planting Robinia pseudoacacia plantation.

The role of woody plants in the formation of figurative and symbolic structure of memorial parks

The article presents the results of the research of the role of plants in the formation of the figurative and symbolic structure of the war memorial parks. It is determined that tree plants can play a role of the the indirect means of expressing the ideological load during different periods of the year. Some species of deciduous shrubs play this role only in autumn due to the red colour of not only fruits but also of foliage, in particular, the Viburnum opulus L., which is common in the war memorial parks in Kyiv, which emphasizes their ideological load due to the fruit and leaves in autumn colouring, as well as the symbolic meaning of this plant for Ukrainians. In winter, the plant act as the means of expressing the ideological load of the war memorial parks due to the shape and colour of the crown, branches, fruits (Rhus typhina L., Cornus mas 'Sibirica', Viburnum opulus L., Sorbus aucuparia 'Pendula'). Based on the results of an expert assessment of Kyiv memorial parks, the peculiarities of the use of woody plants in the formation of figurative and symbolic structure of the war memorial parks of Kyiv are revealed and a structural scheme is developed according to the semiotic levels of perception as per Barabanov (2002). It is discovered that using of plants is most widely represented in parks, which is based on the sign level of perception (collective unconscious) caused by the peculiarities of perception and interpretation of the lines, form and colour of the plant. In particular, within the researched parks, it was revealed that both the positive and the negative effects of the shape, size, colour and texture of the plants influence the perception of the memorial architectural components. When using symbols in the formation of figurative and symbolic structure of the park using plants two approaches to the formation of plant composition are revealed. The first is based on the use of symbolical for Ukrainian species of plants (Viburnum opulus L., Sorbus aucuparia L.), while plant groups are mono-species independent components of the composition. In the second approach, the matching of plants is based on the symbolic meaning of their morphological characteristics. In this case, the plants are located next to the memorial architectural objects as secondary components to enhance emotional influence and increase the information characteristics of the memorial. This approach to the use of plants for the formation of figurative and symbolic structure of the park is based on the symbolic level of semiotic units of perception, according to Barabanov (2002), which is determined by the sociocultural context that is formed within a certain social, historical period and territory.

Allelopathic effects of Robinia pseudoacacia and Quercus acutissima on the exotic plant Rhus typhina in Shandong Peninsula

Allelopathic effects of Robinia pseudoacacia and Quercus acutissima on the exotic plant Rhus typhina in Shandong Peninsula