scholarly journals Allelopathy of Lantana camara as an Invasive Plant

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1028
Author(s):  
Hisashi Kato-Noguchi ◽  
Denny Kurniadie
Keyword(s):  
Essential Oil ◽  
Plant Species ◽  
Invasive Plant ◽  
Rhizosphere Soil ◽  
Lantana Camara ◽  
Regeneration Process ◽  
Living Plant ◽  
Plant Parts ◽  
Indigenous Plant ◽  
Noxious Weed

Lantana camara L. (Verbenaceae) is native to tropical America and has been introduced into many other countries as an ornamental and hedge plant. The species has been spreading quickly and has naturalized in more than 60 countries as an invasive noxious weed. It is considered to be one of the world’s 100 worst alien species. L. camara often forms dense monospecies stands through the interruption of the regeneration process of indigenous plant species. Allelopathy of L. camara has been reported to play a crucial role in its invasiveness. The extracts, essential oil, leachates, residues, and rhizosphere soil of L. camara suppressed the germination and growth of other plant species. Several allelochemicals, such as phenolic compounds, sesquiterpenes, triterpenes, and a flavonoid, were identified in the extracts, essential oil, residues, and rhizosphere soil of L. camara. The evidence also suggests that some of those allelochemicals in L. camara are probably released into the rhizosphere soil under the canopy and neighboring environments during the decomposition process of the residues and as leachates and volatile compounds from living plant parts of L. camara. The released allelochemicals may suppress the regeneration process of indigenous plant species by decreasing their germination and seedling growth and increasing their mortality. Therefore, the allelopathic property of L. camara may support its invasive potential and formation of dense monospecies stands.

scholarly journals Allelopathy of Knotweeds as Invasive Plants

Plants ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 3
Author(s):  
Hisashi Kato-Noguchi
Keyword(s):  
Plant Species ◽  
Mycorrhizal Fungi ◽  
Invasive Plant ◽  
Native Plants ◽  
Rhizosphere Soil ◽  
Arbuscular Mycorrhizal ◽  
Plant Residues ◽  
Japanese Knotweed ◽  
Plant Parts ◽  
Germination And Growth

Perennial herbaceous Fallopia is native to East Asia, and was introduced to Europe and North America in the 19th century as an ornamental plant. Fallopia has been spreading quickly and has naturalized in many countries. It is listed in the world’s 100 worst alien species. Fallopia often forms dense monospecies stands through the interruption of the regeneration process of indigenous plant species. Allelopathy of Japanese knotweed (Fallopia japonica), giant knotweed (Fallopia sachalinensis), and Bohemian knotweed (Fallopia x bohemica) has been reported to play an essential role in its invasion. The exudate from their roots and/or rhizomes, and their plant residues inhibited the germination and growth of some other plant species. These knotweeds, which are non-mycorrhizal plants, also suppressed the abundance and species richness of arbuscular mycorrhizal fungi (AMF) in the rhizosphere soil. Such suppression was critical for most territorial plants to form the mutualism with AMF, which enhances the nutrient and water uptake, and the tolerance against pathogens and stress conditions. Several allelochemicals such as flavanols, stilbenes, and quinones were identified in the extracts, residues, and rhizosphere soil of the knotweeds. The accumulated evidence suggests that some of those allelochemicals in knotweeds may be released into the rhizosphere soil through the decomposition process of their plant parts, and the exudation from their rhizomes and roots. Those allelochemicals may inhibit the germination and growth of native plants, and suppress the mycorrhizal colonization of native plants, which provides the knotweeds with a competitive advantage, and interrupts the regeneration processes of native plants. Therefore, allelopathy of knotweeds may contribute to establishing their new habitats in the introduced ranges as invasive plant species. It is the first review article focusing on the allelopathy of knotweeds.

scholarly journals Potential Phytotoxic Effect of Essential Oil of Non-Native Species Impatiens parviflora DC.

Plants ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 241 ◽  
Author(s):  
Jana Jurová ◽  
Martina Matoušková ◽  
Anna Wajs-Bonikowska ◽  
Danuta Kalemba ◽  
Marek Renčo ◽  
...  
Keyword(s):  
Seed Germination ◽  
Essential Oil ◽  
Plant Species ◽  
Native Species ◽  
Root Elongation ◽  
Invasive Plant ◽  
Main Compound ◽  
Impatiens Parviflora ◽  
Phytotoxic Effect ◽  
Dicot Species

Impatiens parviflora is non-native invasive plant species occupying large areas all over the Europe and threatens native communities by altering their species composition and reducing native biodiversity. The factor responsible for its spreading could be explained by releasing biochemical to the environment. On the other hands, high demand on secondary metabolites as potential source of new ecofriendly biocides could be beneficial. The analysis of I. parviflora essential oil (EO) led us to identify more than 60 volatiles. The main compound was hexahydrofarnesyl acetone, other dominant components were phytol, carvacrol, germacra-4(15),5,10(14)-trien-1-α-ol, and pentacosane. The potential phytotoxic effect of I. parviflora EO collected in two vegetation periods (summer and autumn) was evaluated on seed germination and root elongation of three dicot species (Raphanus sativus, Lepidum sativum, and Lactuca sativa) and on one monocot species (Triticum aestivum). The seed germination of only one dicot species, L. sativa, was affected by both EOs. In contrast, seed germination of monocot species T. aestivum was influenced only by the highest doses of EOs isolated from I. parviflora in autumn. The root elongation of tested plant species was less influenced by I. parviflora EOs. L. sativum showed sensitivity to one dose of EOs hydrodistilled in summer, while the monocot species was influenced by both EOs samples in highest doses. Our findings revealed that I. parviflora contained phenolics that were phytotoxic to the germination of some plant species, mainly at higher EOs doses, while root elongation of tested plants was not suppressed by essential oils.

scholarly journals Lantana Camara and Butterfly Abundance in an Urban Landscape: Benefits for Conservation or Species Invasion?

2015 ◽  
Vol 34 (4) ◽  
pp. 309-328
Author(s):  
Swarnali Mukherjee ◽  
Soumyajit Banerjee ◽  
Parthiba Basu ◽  
GoutamK. Saha ◽  
Gautam Aditya
Keyword(s):  
Plant Species ◽  
Invasive Plant ◽  
Function Analysis ◽  
Species Abundance ◽  
Initial Study ◽  
Lantana Camara ◽  
Urban Landscapes ◽  
Butterfly Species ◽  
Flowering Pattern ◽  
Rural Sites

Abstract Urban landscapes host a range of diverse plants that, in turn, facilitate maintenance of different species of pollinators, including butterflies. In this context, the importance of Lantana camara, an invasive plant species, was assessed highlighting its role in maintenance of butterfly diversity, using Kolkata, India as a study area. Initial study revealed consistent presence of L. camara in both urban and rural sites with at least 25 different butterfly species association. The proportional relative load and the preferences of butterfly species for the each plant species were inclined towards L. camara. Irrespective of the sites, the diurnal and seasonal variations in the butterfly species abundance varied with the flowering pattern of L. camara. A positive correlation of different butterfly species with the flowering time and number of L. camara was for all the sites. The segregation of the L. camara associated butterfly species was made following discriminant function analysis using the extent of flower density of L. camara as explanatory variable. Despite being an invasive species, it is apparent that L. camara can be a prospective host plant that facilitates sustenance of butterflies in both urban and rural sites. Thus, existence of L. camara in urban gardens and forests may prove beneficial in sustenance of the butterflies.

scholarly journals The Use of Essential Oil and Hydrosol Extracted from Satureja hellenica for the Control of Meloidogyne incognita and M. javanica

Plants ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 856
Author(s):  
Iro Pardavella ◽  
Eleni Nasiou ◽  
Dimitra Daferera ◽  
Panayiotis Trigas ◽  
Ioannis Giannakou
Keyword(s):  
Essential Oil ◽  
Plant Species ◽  
Meloidogyne Incognita ◽  
Major Constituent ◽  
Infested Soil ◽  
Second Stage ◽  
Indigenous Plant ◽  
Meloidogyne Species

Essential oil (EO) and hydrosol (HL) isolated from an indigenous plant species Satureja hellenica were evaluated against Meloidogyne incognita and M. javanica. Particularly, the activity of extracts on a second stage juvenile’s (J2s) motility, the hatching of J2s from eggs, egg differentiation and the effect on J2s in soil were tested. A paralysis of 100% of the J2s of both species was recorded after 96 h of immersion in the essential oil, at a dose of 2000 μL/L. At the same dose, the percentage of paralyzed J2s after 48 h of immersion was more than 80%, for both Meloidogyne species. The use of hydrosol has shown encouraging results only in the dilution of 50%, where for both Meloidogyne species tested, the percentage of paralyzed J2s was more than 70% after 48 h of immersion, while the percentage was increased to 90% after 96 h of immersion. Egg differentiation was ceased after immersion, either in EO or HL. However, this decrease in egg differentiation was evident only at higher concentrations of EO and at the highest HL dilution (0.5 v/v). The hatching of M. incognita J2s was decreasing as the dose was increasing. The lowest numbers of hatched J2s were recorded at the doses of 2000 and 4000 μL/L. A clear reduction in M. javanica J2s hatching was observed as the dose was increased to 250 μL/L, a fact constantly observed as the dose was increasing up to 4000 μL/L. Lower numbers of nematodes were recorded in roots grown in infested soil after the application of EO or HL at the highest doses. The EO of S. hellenica is characterized by the presence of p-cymene (27.46%) and carvacrol (23.25%), and in a lesser extent of other constituents, such as borneol (6.79%), carvacrol methylether (6.77%), γ-terpinene (4.63%) and 4-terpineol (3.65%). Carvacrol was the major constituent found in the HL (50.12%), followed by borneol and 4-terpineol (20.42 and 6.72%, respectively).

scholarly journals Impact of invasive alien plant species, Lantana camara, on the species composition, richness and evenness of invaded plant communities in Sidama, Gamogofa and Gedio Zones, Ethiopia

2021 ◽  
Author(s):  
Amare Seifu Assefa ◽  
Ermias Lulekal Molla
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Plant Communities ◽  
Invasive Plant ◽  
Lantana Camara ◽  
Economic Sectors ◽  
Alien Plant ◽  
Invasive Alien Plant ◽  
Plant Families ◽  
The Impact

Abstract Invasive alien species represent one of the major threats to biodiversity and all economic sectors. Lantana camara has been ranked as the highest impacting invasive plant species in the study areas. However, its impact on diversity and composition of invaded plant communities has not been well studied. Therefore, the objective of this study was to investigate the impact of Lantana camara on species diversity and composition of invaded plant communities in the study areas. A total of 120, 10m X 10m plots were sampled so as to examine its effects of invasions on the species diversity and composition of invaded communities. A total of 109 species were found in the non-invaded areas as compared to 56 in the invaded areas. The number of species decreased by 48.6% in Lantana camara invaded areas as compared to the control. The mean evenness values of the entire invaded sampled study site and that of the control were 0.24 and 0.81 respectively. Thus, the heterogeneity of the invaded study sites was reduced by 57%. The number of plant families was 44 in the control areas in contrast to only 30 in the invaded areas. The number of plant families decreased by 31.8% in the invaded areas as compared to the control. Therefore, it was noted that Lantana camara has a serious impact on plant diversity hence the finding calls for an urgent management and control strategy against the spread of Lantana camara so as to save the ongoing threat to biodiversity.

The association between invasive Lantana camara and seedlings/saplings of a plant community in Mudumalai Tiger Reserve, India

2014 ◽  
Vol 30 (6) ◽  
pp. 551-563 ◽  
Author(s):  
Gaius Wilson ◽  
Ajay A. Desai ◽  
Dalice A. Sim ◽  
Monica A. M. Gruber ◽  
Philip J. Lester
Keyword(s):  
Plant Species ◽  
Invasive Plant ◽  
Deciduous Forest ◽  
Linear Regression Analysis ◽  
Major Effect ◽  
Lantana Camara ◽  
Species Assemblage ◽  
Grass Cover ◽  
Environmental Covariates ◽  
Dry Deciduous Forest

Abstract:We examined changes in a community of seedlings/saplings 10–150 cm tall associated with the presence of a widely invasive plant, Lantana camara and environmental covariates along 67 randomly located transects, in Mudumalai, India. We compared plant species assemblage and grass cover in L. camara-invaded and uninvaded plots in three habitats. Multivariate analyses revealed a significant association of all environmental covariates with plant species assemblage. Pairwise tests indicated that L. camara was significantly associated with changes in plant species assemblage and grass cover within the moist and dry deciduous forest, but not in the thorn forest. The relationship between L. camara and that of elephant browse plants varied with species. A linear regression analysis indicated that L. camara invasion was the only significant predictor of grass occupancy. Our results indicate that in addition to other factors, L. camara was associated with altering plant species assemblage, some elephant browse plants and grass cover in the moist and dry deciduous forest. It appears that L. camara can have a major effect on diversity within this reserve, but whether this effect is by L. camara driving the change or being associated with other habitat change requires further experimental evidence.

scholarly journals Seasonal and Regional Chemical Variability of the Wild Population of Lantana camara Leaf Essential Oil From Kenya

2021 ◽  
Vol 13 (11) ◽  
pp. 86
Author(s):  
Robai N. Liambila ◽  
Steve B. S. Baleba ◽  
John M. Wesonga ◽  
Catherine N. Ngamau ◽  
Waudo Wallyambilla
Keyword(s):  
Environmental Factors ◽  
Essential Oil ◽  
Invasive Plant ◽  
Climatic Factors ◽  
Environmental Influence ◽  
Metabolite Profile ◽  
Lantana Camara ◽  
Wild Plant ◽  
Climatic Data ◽  
Regional Variability

Studies examining the variability in wild plant metabolic expression propose that environmental factors significantly influence the essential oil (EO) quality and quantity in a plant. Lantana camara is a widely distributed invasive plant species worldwide. However, its immense metabolites can become a source of novel compounds to produce biopesticides in the agricultural industry. Although, the quality aspect has to be considered due to the environmental influence on the metabolites synthesised. Therefore, this research aimed to understand the influence of environmental factors and how it shapes the plant’s metabolite profile in multiple populations of L. camara. Leaf samples were collected from six different geographic regions of Kenya and the corresponding monthly climatic data and soil samples. GC-MS data from leaf EO were analysed with environmental variables (climate and soil data) using unimodally unconstrained and constrained ordination methods for untargeted metabolomics analysis. Partial Least Squares-Discriminant Analysis (PLS-DA) and Random Forests (RF) were used to confirm the variability further. Seasonal and regional variability was observed for secondary metabolites (SMs) in the leaf EO, which correlated to climatic factors and soil attributes. We highlight the season-al-geographic metabolism relationship for L. camara and the combined analytical approach to obtain data that contributes to understanding the influence of environmental factors on the synthesis and accumulation of SMs. This research will have all-embracing implications for maximising phytochemical uniformity.

scholarly journals Essential Oil Enriched with Oxygenated Constituents from Invasive Plant Argemone ochroleuca Exhibited Potent Phytotoxic Effects

Plants ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 998 ◽  
Author(s):  
Ahmed M. Abd-ElGawad ◽  
Abd El-Nasser G. El Gendy ◽  
Abdulaziz M. Assaeed ◽  
Saud L. Al-Rowaily ◽  
Elsayed A. Omer ◽  
...  
Keyword(s):  
Essential Oil ◽  
Invasive Plant ◽  
Acid Methyl Ester ◽  
Test Plant ◽  
Authentic Materials ◽  
Oxygenated Compounds ◽  
Phytotoxic Activity ◽  
Oleic Acid Methyl Ester ◽  
Ic50 Values ◽  
Noxious Weed

Invasive species are considered as one of the major threats to ecosystems worldwide. Although invasive plants are regarded as a foe, they could be considered as natural resources for valuable bioactive compounds. The present study aimed to characterize the chemical composition of the essential oil (EO) from the invasive plant Argemone ochroleuca Sweet, collected from Saudi Arabia, as well as to evaluate its phytotoxic activity. Seventy-four compounds were characterized via GC-MS analysis of EO representing 98.75% of the overall mass. The oxygenated constituents (79.01%) were found as the main constituents, including mono- (43.27%), sesqui- (17.67%), and di-terpenes (0.53%), as well as hydrocarbons (16.81%) and carotenoids (0.73%). Additionally, 19.69% from the overall mass was characterized as non-oxygenated compounds with mono- (1.77%), sesquiterpenes (17.41%), and hydrocarbons (0.56%) as minors. From all identified constituents, trans-chrysanthenyl acetate (25.71%), γ-cadinene (11.70%), oleic acid, methyl ester (7.37%), terpinene-4-ol (4.77%), dihydromyrcenol (2.90%), α-muurolene (1.77%), and γ-himachalene (1.56%) were found as abundant. The EO of A. ochroleuca showed significant phytotoxic activity against the test plant Lactuca sativa and the noxious weed Peganum harmala. The EO attained IC50 values of 92.1, 128.6, and 131.6 µL L−1 for seedling root growth, germination, and shoot growth of L. sativa, respectively, while it had IC50 values of 134.8, 145.7, and 147.9 µL L−1, respectively, for P. harmala. Therefore, this EO could be used as a bioherbicide against weeds, while further study is recommended for the characterization of the authentic materials of the main compounds in the EO as well as for the evaluation of potency of this oil on a field scale and the determination of its biosafety.

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