Effects of leaf litter on inter‐specific competitive ability of the invasive plant <i>Wedelia trilobata</i>

Dai, Zhi‐Cong; Wang, Xiaoying; Qi, Shanshan; Cai, Honghong; Sun, Jiaqiang; Huang, Ping; Du, Daolin

doi:10.1007/s11284-016-1344-0

Cited by 28 publications

(26 citation statements)

References 30 publications

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“…Seed germination of L. formosana was inhibited to varying degrees by aqueous extracts of C. migao. The higher the concentration of the extracts, more robust was their inhibitory effect on seed germination of the recipient plants, which is consistent with previously reported trends [36][37][38]. When the concentration of all extracts increased to 50 mg mL −1 , the germination rate and potential decreased rapidly.…”

Section: Discussionsupporting

confidence: 91%

Allelopathic Effects of Cinnamomum migao on Seed Germination and Seedling Growth of its Associated Species Liquidambar formosana

Wang

Chen

Xiong

et al. 2019

Forests

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We examined allelopathic effects and underlying mechanisms of Cinnamomum migao on its associated species Liquidambar formosana. We assessed effects of aqueous extracts of C. migao pericarp, leaf, and rhizosphere soil at different concentrations on seed germination, seedling growth, and physiology of L. formosana. All extracts inhibited L. formosana seed germination, with obvious inhibition at high concentrations (50 mg mL−1). All extracts promoted the height and ground diameter of seedlings, with the highest promotion achieved with aqueous leaf extract at a concentration of 1 mg mL−1 and aqueous pericarp and rhizosphere soil extracts at a concentration of 5 mg mL−1. All extracts promoted soluble protein accumulation in L. formosana seedlings, with the highest accumulation achieved with aqueous pericarp extracts. Aqueous leaf extract promoted soluble starch accumulation. Aqueous pericarp extract at concentrations of >10 mg mL−1 significantly increased soluble sugar content. Aqueous leaf and rhizosphere soil extracts at concentrations of >5 mg mL−1 increased proline accumulation. All extracts at concentrations of >1 mg mL−1 significantly increased malondialdehyde content. Aqueous pericarp and rhizosphere soil extracts at concentrations of 10 and 0.5 mg mL−1, respectively, promoted superoxide dismutase activity. Activities of soil urease, polyphenol oxidase, and catalase were significantly increased when the concentration of aqueous pericarp and leaf extracts exceeded 5 mg mL−1, and the activity of soil acid phosphatase significantly increased when the concentration of all extracts were 5 mg mL−1. According to the synthetic allelopathic index, the low- and medium-concentration extracts all showed a promoting effect, whereas high concentrations exhibited obvious inhibitory effects; furthermore, the comprehensive effect value of leaf water extraction was higher than that of the pericarp and rhizosphere soil. Thus, allelopathy can affect the long-term co-existence of C. migao and L. formosana.

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Section: Discussionsupporting

confidence: 91%

Allelopathic Effects of Cinnamomum migao on Seed Germination and Seedling Growth of its Associated Species Liquidambar formosana

Wang

Chen

Xiong

et al. 2019

Forests

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“…It was also observed a significant influence of all tested concentrations of extracts from leaves of S. dulcis, while in the presence of root only significant differences were found for the greatest concentration. Studies conducted by Zhi-Cong et al (2016) found that the allelopathic effect of water extract from Wedelia trilobata (Asteraceae) on seeds of L. sativa and Eupatorium catariun caused a reduction of the seedlings length as the concentration increased. Inhibition of the hypocotyl growth of a species in in vitro assay enriched with plant extracts is commonly seen as an evidence of allelopathic interaction.…”

Section: /7mentioning

confidence: 99%

Allelopathic activity of broom (Scoparia dulcis L.) on the germination of invasive plants

Ferreira

Franco

Santos

et al. 2020

Agraria

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Allelopathy is characterized by effects on plant germination or development caused by chemicals released by other plants. This work aimed to verify the allelopathic activity of Scoparia dulcis leaves and roots in weeds and lettuce, as well as to determine the phenolic compounds present in the studied plant. The experiment was arranged in a 2 x 5 factorial design, with six replications of 15 seeds each. The seeds were placed to germinate in agar layers, and after ten days were evaluated the germination percentage, shoot length and root primary length. Phytochemical analysis using high performance liquid chromatography was also carried out, in which the samples were injected three times in the chromatographic system to obtain the average concentrations and retention times, allowing to identify and quantify the studied metabolites. The results showed that this species has allelopathic potential, as it interfered in the development of all receiving plants studied, and the inhibitory action exerted by the leaves was more significant/ou intense on the analyzed variables. On the other hand, the roots presented a larger total amount of phenolic compounds, being caffeic acid found in greater amount both in the roots and leaves.

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“…(Asteraceae) is a native perennial evergreen clonal plant in South America (Qi et al 48) and is one of the top 100 invasive species in the world (Qin et al 50). Since it was introduced to South China in 1970s, W. trilobata has rapidly spread and is thus preventing the regeneration of indigenous and alien plant species (Qi et al 48) using allelopathic chemicals (Dai et al 12) and by forming dense, mono‐specific stands in its invaded ranges (Qi et al 49; Dai et al 11). In addition, W. trilobata appears to be rarely attacked by pathogens in its invaded habitats (Dai et al 10), however, the mechanism of pathogen defence has not been clearly elucidated.…”

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi improve the growth and disease resistance of the invasive plant Wedelia trilobata

Chen

et al. 2019

J Appl Microbiol

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Aims Arbuscular mycorrhizal fungi (AMF) are symbiotic partners of many invasive plants, however, it is still unclear how AMF contribute to traits that are important for the successful invasion of their host and how environmental factors, such as nutrient conditions, influence this. This study was to explore the effects of Glomus versiforme (GV) and Glomus mosseae (GM) on the growth and disease resistance of the invasive plant Wedelia trilobata under different nutrient conditions. Methods and Results We found that GV and GM had higher root colonization rates resulting in faster W. trilobata growth under both low‐N and low‐P nutrient conditions compared to the normal condition. Also, the colonization of W. trilobata by GV significantly reduced the infection area of the pathogenic fungus Rhizoctonia solani under low‐N conditions. Conclusions These results demonstrated that AMF can promote the growth and pathogenic defence of W. trilobata in a nutrient‐poor environment, which might contribute to their successful invasion into certain type of habitats. Significance and Impact of the Study In this study, we report for the first time that AMF can promote growth and disease resistance of W. trilobata under nutrient‐poor environment, which contribute to a better understanding of plant invasion.

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Effects of leaf litter on inter‐specific competitive ability of the invasive plant Wedelia trilobata

Cited by 28 publications

References 30 publications

Allelopathic Effects of Cinnamomum migao on Seed Germination and Seedling Growth of its Associated Species Liquidambar formosana

Allelopathic Effects of Cinnamomum migao on Seed Germination and Seedling Growth of its Associated Species Liquidambar formosana

Allelopathic activity of broom (Scoparia dulcis L.) on the germination of invasive plants

Arbuscular mycorrhizal fungi improve the growth and disease resistance of the invasive plant Wedelia trilobata

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