Eco-Biology and Management of Alligator Weed [Alternanthera philoxeroides) (Mart.) Griseb.]: a Review

Tanveer, Asif; Ali, Hafiz Haider; Manalil, Sudheesh; Raza, Ali; Chauhan, Bhagirath Singh

doi:10.1007/s13157-018-1062-1

Cited by 29 publications

(25 citation statements)

References 60 publications

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“…They may threaten human health by providing habitats for mosquitoes (O’Meara et al, 2003; Chandra et al, 2006). They also hamper recreational activities and disrupt agricultural production, causing great economic losses (Oreska and Aldridge, 2010; Rumlerova et al, 2016; Keller et al, 2018; Tanveer et al, 2018). Alien aquatic plants often compete for space, nutrients, and sediment fertilities with native macrophytes, thus hindering their re-establishment and decreasing diversity (Michelan et al, 2018; Silveira et al, 2018).…”

Section: Positive and Negative Impacts Of Global Change On Aquatic Almentioning

confidence: 99%

Global Change Sharpens the Double-Edged Sword Effect of Aquatic Alien Plants in China and Beyond

Ding

2019

Front. Plant Sci.

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Many alien aquatic plants are deliberately introduced because they have economic, ornamental, or environmental values; however, they may also negatively affect aquatic ecosystems, by blocking rivers, restricting aquatic animals and plants by decreasing dissolved oxygen, and reducing native biodiversity. These positive and/or negative ecological effects may be enhanced under global change. Here, we examine the impacts of global change on aquatic alien plant introduction and/or invasions by reviewing their introduction pathways, distributions, and ecological effects. We focus on how climate change, aquatic environmental pollution, and China’s rapid economic growth in recent decades affect their uses and invasiveness in China. Among 55 species of alien aquatic plants in China, 10 species are invasive, such as Eichhornia crassipes , Alternanthera philoxeroides , and Pistia stratiotes . Most of these invaders were intentionally introduced and dispersed across the country but are now widely distributed and invasive. Under climate warming, many species have expanded their distributions to areas where it was originally too cold for their survival. Thus, these species are (and will be) considered to be beneficial plants in aquaculture and for the restoration of aquatic ecosystems (for water purification) across larger areas. However, for potential invasive species, climate warming is (and will be) increasing their invasion risk in more areas. In addition, nitrogen deposition and phosphorus inputs may also alter the status of some alien species. Furthermore, climate warming has shifted the interactions between alien aquatic plants and herbivores, thus impacting their future spreads. Under climate change, more precipitation in North China and more frequent flooding in South China will increase the uncertainties of ecological effects of alien aquatic plants in these regions. We also predict that, under the continuing booming economy in China, more and more alien aquatic plants will be used for aquatic landscaping and water purification. In conclusion, our study indicates that both human activities under rapid economic growth and climate change can either increase the potential uses of alien aquatic plants or make the aquatic invaders worse in China and other areas in the world. These findings are critical for future risk assessment of aquatic plant introduction and aquatic ecosystem restoration.

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Section: Positive and Negative Impacts Of Global Change On Aquatic Almentioning

confidence: 99%

Global Change Sharpens the Double-Edged Sword Effect of Aquatic Alien Plants in China and Beyond

Ding

2019

Front. Plant Sci.

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“…The present study identified an inhibitory allelopathy effect of a native plant species H. scandens on A. philoxeroides , being revealed by the fact that three chemical extracts of HR inhibited the seedling growth of A. philoxeroides ( SE < 0, Table 3 ). Inhibition of shoot growth of A. philoxeroides was previously identified as well with extracts, residues and allelochemicals from different plants and fungi 4 . Biomass is one of the main important factors controlling the spread of A. philoxeroides 21 , 38 .…”

Section: Discussionmentioning

confidence: 95%

“…Biomass is one of the main important factors controlling the spread of A. philoxeroides 21 , 38 . The regrowth capacity of alligator weed was weakened by removing and destroying its above- and below-ground biomass 4 . An inhibited aboveground biomass, belowground biomass, total biomass and the leaf area of A. philoxeroides were found in our study with exposure to ethyl acetate extract of HR ( RI = − 0.67, − 0.72, − 0.68, − 0.83, respectively).…”

Section: Discussionmentioning

confidence: 99%

“…Griseb. (an Amaranthaceae family member, generally named alligator weed), is a worldwide invasive plant species 1 of which invasion was reported in 32 different countries 2 – 4 . It grows well in terrestrial, aquatic, hygrophytic and other habitats 5 .…”

Section: Introductionmentioning

confidence: 99%

“…Physical methods are mainly to remove invasive plants by manual and mechanical methods; chemical methods are to spray chemical herbicides such as glyphosate to cause plant death; biological methods are mainly to control plant growth by natural enemies, soil animals and soil microorganisms. These methods are usually suffering from expensive costs 4 , lack of durability 19 , risks of accelerating invasion 21 and producing herbicide-resistant weeds 22 , leading to poor efficiency of invasion control. However, allelopathy found its role in successful replacement control of invasive weeds 23 , 24 , consequently being introduced to combat the challenges of environmental pollution and herbicide resistance development 23 , 25 .…”

Section: Introductionmentioning

confidence: 99%

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Identify potential allelochemicals from Humulus scandens (Lour.) Merr. root extracts that induce allelopathy on Alternanthera philoxeroides (Mart.) Griseb.

Wang

Liu

Zhu

et al. 2021

Sci Rep

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Although it is well-documented that invasion of invasive plants is promoted with allelopathic effects by inhibiting the growth and phenotypic performance of native plants, little is known conversely. In this study, the allelopathy effects of a native plant, Humulus scandens (Lour.) Merr., on a typical invasive species Alternanthera philoxeroides (Mart.) Griseb., was investigated by exposing A. philoxeroides seedlings to three chemical solvent extracts (i.e., petroleum ether extract (PE), ethyl acetate extract (EE), and n-butanol extract (NE) of H. scandens root (HR). The three chemical extracts inhibited the growth, stem length, node number, leaf number, leaf area, and root number, and increased malondialdehyde (MDA) content of A. philoxeroides seedlings, which indicated that the extracts inhibited the plant growth by damaging the membrane system of leaves. And the synthetical effect of allelopathy (SE) index indicated that EE had the greatest inhibition on the growth of A. philoxeroides. Fifty compounds were identified from the three extracts of HR using GC–MS analysis, among which 5 compounds (dibutyl phthalate, stigmasta-3,5-diene, 2,6-Di-tert-butylphenol campesterol, and neophytadiene) were identified from H. scandens root extracts for the first time. And n-hexadecanoic acid exists in all three extracts. The findings of the present study provide a novel method to potentially control the invasion of A. philoxeroides. However, field monitoring under natural conditions would be necessary to confirm in practice the results obtained with the bioassays.

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Intraspecific trait plasticity to N and P of the wetland invader, Alternanthera philoxeroides under flooded conditions

Harms

Knight

DeRossette

et al. 2023

Ecology and Evolution

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Interactions between invaders and resource availability may explain variation in their success or management efficacy. For widespread invaders, regional variation in plant response to nutrients can reflect phenotypic plasticity of the invader, genetic structure of invading populations, or a combination of the two. The wetland weed Alternanthera philoxeroides (alligatorweed) is established throughout the southeastern United States and California and has high genetic diversity despite primarily spreading clonally. Despite its history in the United States, the role of genetic variation for invasion and management success is only now being uncovered. To better understand how nutrients and genotype may influence A. philoxeroides invasion, we measured the response of plants from 26 A. philoxeroides populations (three cp haplotypes) to combinations of nitrogen (4 or 200 mg/L N) and phosphorus (0.4 or 40 mg/L P). We measured productivity (biomass accumulation and allocation), plant architecture (stem diameter and thickness, branching intensity), and foliar traits (toughness, dry matter content, percent N, and percent P). A short‐term developmental assay was also conducted by feeding a subset of plants from the nutrient experiment to the biological control agent Agasicles hygrophila , to determine whether increased availability of N or P to its host influenced agent performance, as has been previously suggested. Alternanthera philoxeroides haplotype Ap1 was more plastic than other haplotypes in response to nutrient amendments, producing more than double the biomass from low to high N and 50%–68% higher shoot: root ratio than other haplotypes in the high N treatment. Alternanthera philoxeroides haplotypes differed in seven of 10 variables in response to increased N. We found no differences in short‐term A. hygrophila development between haplotypes but mass was 23% greater in high than low N treatments. This study is the first to explore the interplay between nutrient availability, genetic variation, and phenotypic plasticity in invasive characteristics of the global invader, A. philoxeroides .

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Eco-Biology and Management of Alligator Weed [Alternanthera philoxeroides) (Mart.) Griseb.]: a Review

Cited by 29 publications

References 60 publications

Global Change Sharpens the Double-Edged Sword Effect of Aquatic Alien Plants in China and Beyond

Global Change Sharpens the Double-Edged Sword Effect of Aquatic Alien Plants in China and Beyond

Identify potential allelochemicals from Humulus scandens (Lour.) Merr. root extracts that induce allelopathy on Alternanthera philoxeroides (Mart.) Griseb.

Intraspecific trait plasticity to N and P of the wetland invader, Alternanthera philoxeroides under flooded conditions

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