Comparative performance of the highly invasive <i>Mimosa invisa</i> and its less invasive subspecies under different nutrient and light conditions

Wang, Y; Fan, Zhiwei; Shen, Yide; Li, X X; Liu, Y; Huang, Qiao

doi:10.1111/wre.12379

Cited by 7 publications

(4 citation statements)

References 29 publications

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“…A similar growth pattern has been also reported by Wang et al. ( 2019 ) when these two varieties were grown under ambient environmental conditions. Invasive plants often exhibit greater biomass allocation to shoot (lower RS) during early stages than native species, which may increase carbon assimilation efficiency and thereby reduce constraints to the establishment of invasive species in a community (Daehler, 2003 ; Grotkopp et al., 2002 ; Rejmánek & Richardson, 1996 ; Van Kleunen et al., 2010 ).…”

Section: Discussionsupporting

confidence: 88%

Germination patterns and seedling growth of congeneric native and invasive Mimosa species: Implications for risk assessment

Kharel,

Dangol,

Shrestha

et al. 2024

Ecology and Evolution

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Comparisons of plant traits between native and invasive congeners are useful approaches for identifying characteristics that promote invasiveness. We compared germination patterns and seedling growth of locally sympatric populations of native Mimosa himalayana and two varieties of invasive M. diplotricha (var. diplotricha and var. inermis) growing in southeastern Nepal. Seeds were germinated under a 12‐h photoperiod or complete dark, low (25/15°C day/night) and high (30/20°C) temperatures, different water stress levels (0, −0.1, −0.25, −0.5, −0.75 and −1.0 MPa), and soil depths (0, 2, and 4 cm). Plant height, biomass allocations, and relative growth rate (RGR) of seedlings were measured. Invasive M. diplotricha had higher germination percentage, rate, and shorter germination time compared with the native species. Germination of both congeners declined as water stress increased, but the decline was more pronounced in native species. Seedling emergence declined with increasing depth in all taxa. The seedlings of invasive species were taller with higher leaf number and allocated greater proportion of biomass to shoot, whereas the native congener allocated greater biomass to root. The RGR was nearly twice as high in invasive species as it was in the native congener. Seedling height and number of leaves were always higher in invasive than in native species, and the native–invasive differences increased over time. Better germination and higher growth performance of invasive species than the congeneric native one suggests that seed germination and seedling growth can be useful traits for the prediction of species' invasiveness in their introduced range during risk assessment process.

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Section: Discussionsupporting

confidence: 88%

Germination patterns and seedling growth of congeneric native and invasive Mimosa species: Implications for risk assessment

Kharel,

Dangol,

Shrestha

et al. 2024

Ecology and Evolution

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“…Invasive plants can outbreak in various environments and quickly establish populations as dominant species ( Langmaier and Lapin, 2020 ; Wondafrash et al, 2021 ). One of the main reasons is that they interact with soil microorganisms to increase the availability of soil resources ( Wang et al, 2019 ). Soil microorganisms have different effects on the nutrient absorption of different plants, thus affecting plant competitiveness ( Yang G. W. et al, 2014 ; Sun et al, 2019 ).…”

Section: Discussionmentioning

confidence: 99%

Rhizospheric Bacillus-Facilitated Effects on the Growth and Competitive Ability of the Invasive Plant Ageratina adenophora

Chen

et al. 2022

Front. Plant Sci.

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The rhizospheric microbial community affects the population establishment of invasive plants in introduced areas, among which Bacillus has numerous functions in promoting plant growth. This study isolated and enriched the Bacillus community in the rhizospheric soil of the invasive plant Ageratina adenophora and the native accompanying plant Rabdosia amethystoides. The effects of these rhizospheric Bacillus communities on the growth and competition of A. adenophora and R. amethystoides were evaluated in pot experiments. The results showed that the number and diversity of Bacillus in the rhizospheric soil of A. adenophora were higher than those of R. amethystoides (A. adenophora: 122 strains in soil, 16 Bacillus taxa; R. amethystoides: 88 strains in soil, 9 Bacillus taxa). After Bacillus inoculation of A. adenophora in a pot experiment, Bacillus idriensis, Bacillus toyonensis and Bacillus cereus were accumulated in the rhizospheric of A. adenophora, which significantly increased the nitrate nitrogen (NO3–-N) content in the soil and the total carbon and nitrogen concentrations in A. adenophora in the mixed treatment. The selective accumulation of Bacillus enhanced the competitive advantage of A. adenophora over the native accompanying plant; the corrected index of relative competition intensity of A. adenophora-inoculated Bacillus reached double that of the uninoculated treatment, and the growth of native plants was greatly suppressed under mixed planting. Our study confirmed that invasion of A. adenophora can lead to the accumulation of specific Bacillus taxa in the rhizospheric soil, which in turn can increase the competitive advantage of A. adenophora.

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“…Plant height and leaf size are two key factors determining the success of competition for light resources among individual plants (Gorchov & Trisel, 2003) and studies have shown that shading can increase both these factors (Valladares et al, 2000;Y. Wang et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Effect of Shading on Interspecific Competition Between Aegilops tauschii and Triticum aestivum

Wang

Yuan²,

Wang

2022

Acta Soc Bot Pol

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Aegilops tauschii is a competitive invasive weed typically found in winter wheat fields. In this study, using the replacement series experiments designed by de Wit, the effects of different shading treatments on the morphological structure, physiological characteristics, and competitiveness of the invasive plant A. tauschii were comparatively analyzed with the aim of providing knowledge for the ecological control of this weed in wheat fields. The results showed that in terms of morphological characteristics, shading caused an increase in plant height, leaf area, and specific leaf area (SLA); and a decrease in the root-to-crown ratio (R/C) of both A. tauschii and wheat plants. With regard to physiological characteristics, both A. tauschii and wheat plants adapted to the low-light environment by increasing the chlorophyll content, with an increase of chlorophyll b in particular. It could be concluded from the changes in superoxide dismutase (SOD) activity and thiobarbituric acid reactive substances (TBARS) content that the low-intensity shading treatment significantly improved the stress resistance of A. tauschii , thus ensuring the continuation of its normal photosynthesis. In addition, the plasticity index average value of eight morphological indicators of A. tauschii (e.g., plant height and leaf area) was 0.18, which was greater than that of wheat (0.17). Similarly, the plasticity index average value of four physiological indicators of A. tauschii (e.g., chlorophyll content and SOD activity) was 0.46, which was also higher than that of wheat (0.37). Finally, the competitive balance (CB) value of A. tauschii showed that its competitiveness under low light conditions was still greater than wheat, but gradually diminished with increasing shading rate. In short, A. tauschii displays a certain adaptability to low light environments, but shading treatment may also significantly reduce its competitive inhibition of wheat.

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Comparative performance of the highly invasive Mimosa invisa and its less invasive subspecies under different nutrient and light conditions

Cited by 7 publications

References 29 publications

Germination patterns and seedling growth of congeneric native and invasive Mimosa species: Implications for risk assessment

Germination patterns and seedling growth of congeneric native and invasive Mimosa species: Implications for risk assessment

Rhizospheric Bacillus-Facilitated Effects on the Growth and Competitive Ability of the Invasive Plant Ageratina adenophora

Effect of Shading on Interspecific Competition Between Aegilops tauschii and Triticum aestivum

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