Nitrogen enrichment alters the resistance of a noninvasive alien plant species to Alternanthera philoxeroides invasion

Wu, Hao; Dong, Sijin; Li, Wang; Yu, Zhu; Jia, Shengyong; Rao, Benqiang

doi:10.3389/fevo.2023.1215191

Cited by 2 publications

(1 citation statement)

References 74 publications

(83 reference statements)

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“…O. articulata was distributed in a location very close to A. philoxeroides, indicating that the ecological niche of these two plant species is similar, and they thus might be intensely competitive. Our previous study also found that O. articulata has a strong biotic substitution effect on A. philoxeroides invasion, particularly in soils with high fertility; the physiological plasticity and photosynthetic efficiency of O. articulata were higher than those of A. philoxeroides [76].…”

Section: Mechanism Of Impact Of Soil On Plant Species Distributionsmentioning

confidence: 53%

Impacts of Soil Properties on Species Diversity and Structure in Alternanthera philoxeroides-Invaded and Native Plant Communities

Wu,

Liu,

Zhang

et al. 2024

Plants

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Soil properties can affect plant population dynamics and the coexistence of native and invasive plants, thus potentially affecting community structure and invasion trends. However, the different impacts of soil physicochemical properties on species diversity and structure in native and invaded plant communities remain unclear. In this study, we established a total of 30 Alternanthera philoxeroides-invaded plots and 30 control plots in an area at the geographical boundary between North and South China. We compared the differences in species composition between the invaded and native plant communities, and we then used the methods of regression analysis, redundancy analysis (RDA), and canonical correspondence analysis (CCA) to examine the impacts of soil physicochemical properties on four α-diversity indices and the species distribution of these two types of communities. We found that A. philoxeroides invasion increased the difference between the importance values of dominant plant species, and the invasion coverage had a negative relationship with the soil-available potassium (R2 = 0.135; p = 0.046) and Patrick richness index (R2 = 0.322; p < 0.001). In the native communities, the species diversity was determined with soil chemical properties, the Patrick richness index, the Simpson dominance index, and the Shannon–Wiener diversity index, which all decreased with the increase in soil pH value, available potassium, organic matter, and ammonium nitrogen. However, in the invaded communities, the species diversity was determined by soil physical properties; the Pielou evenness index increased with increasing non-capillary porosity but decreased with increasing capillary porosity. The determinants of species distribution in the native communities were soil porosity and nitrate nitrogen, while the determinants in the invaded communities were soil bulk density and available potassium. In addition, compared with the native communities, the clustering degree of species distribution in the invaded communities intensified. Our study indicates that species diversity and distribution have significant heterogeneous responses to soil physicochemical properties between A. philoxeroides-invaded and native plant communities. Thus, we need to intensify the monitoring of soil properties in invaded habitats and conduct biotic replacement strategies based on the heterogeneous responses of native and invaded communities to effectively prevent the biotic homogenization that is caused by plant invasions under environmental changes.

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Section: Mechanism Of Impact Of Soil On Plant Species Distributionsmentioning

confidence: 53%

Impacts of Soil Properties on Species Diversity and Structure in Alternanthera philoxeroides-Invaded and Native Plant Communities

Wu,

Liu,

Zhang

et al. 2024

Plants

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Arbuscular mycorrhizal fungi alleviate the pathogenic stress on the invasive weed Alternanthera philoxeroides

Qi,

Zhang,

Yan

et al. 2024

Preprint

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Invasive plants have caused huge damages in ecosystems. Arbuscular mycorrhizal fungi (AMF) play important roles in plant growth. However, the importance of AMF in pathogenic stress on invasive plants were rarely studied. The effects of AMF (Glomus etunicatum) on the resistance to pathogenic fungus Rhizoctonia solani of an invasive plant Alternanthera philoxeroides were examined in this study. Our results showed that AMF significantly promoted stem length, spacer length, and leaf area of A. philoxeroides. The pathogen R. solani negatively impacted plant growth, including above-ground biomass and root characteristics. However, AMF inoculation mitigated these negative effects. Notably, AMF colonization rates increased significantly in the presence of pathogen. AMF significantly promoted the above-ground growth and decreased the root/shoot ratio to help resist pathogen. These findings indicate that AMF can enhance A. philoxeroides resistance to pathogenic stress, potentially contributing to its invasive success. This study provides insights into the complex interactions between invasive plants, beneficial fungi, and pathogens, which may have implications for understanding and managing plant invasions.

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Nitrogen enrichment alters the resistance of a noninvasive alien plant species to Alternanthera philoxeroides invasion

Cited by 2 publications

References 74 publications

Impacts of Soil Properties on Species Diversity and Structure in Alternanthera philoxeroides-Invaded and Native Plant Communities

Impacts of Soil Properties on Species Diversity and Structure in Alternanthera philoxeroides-Invaded and Native Plant Communities

Arbuscular mycorrhizal fungi alleviate the pathogenic stress on the invasive weed Alternanthera philoxeroides

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