Effects of vertical phosphorus competition on root growth and biomass distribution of Chinese fir seedlings

Jingjing, 许静静 Xu; Qi, 李琦 Li; Wenjing, 吴文景 Wu; Rashid, Muhammad Haroon U.; Xiangqing, 马祥庆 Ma; Pengfei, 吴鹏飞 Wu

doi:10.5846/stxb201803230577

Cited by 3 publications

(2 citation statements)

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“…Research has shown that plant roots in karst habitats have many branches and grow horizontally, thereby ensuring strong competitiveness for water and nutrients [24]. Xu et al (2019) [25] believed that Chinese fir seedlings could enhance its specific root length to improve their P acquisition, when in competition with adjacent plants for a limited supply of phosphorus. Besides, root morphology and nutrients were significantly affected by soil microorganisms such as AM fungi [26].…”

Section: Introductionmentioning

confidence: 99%

An invasive plant experiences greater benefits of root morphology from enhancing nutrient competition associated with arbuscular mycorrhizae in karst soil than a native plant

Xia

Wang

et al. 2020

PLoS ONE

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The Eupatorium adenophorum have widespread invaded the karst ecosystem of southwest China and threatened the regional native community stability. Arbuscular mycorrhizae (AM) plays an important role in promoting growth for host plants via root external mycelia. However, whether AM regulates plant root traits underlying competition between invasive and native species via mycorrhizal networks in karst habitats, remains unclear. An experiment was conducted in a microcosm composed of two planting compartments flanking a competition compartment. The invasive E. adenophorum and native Artemisia annua were each placed in one of the two planting compartments with or without Glomus etunicatum fungus. The nutrient access treatments included the competitive utilization (Cu), single utilization (Su) and non-utilization (Nu) by using different nylon meshes allowed or prevented mycelium passing to acquire nutrients from the competition compartment. Root traits and nutrients of the two species were analyzed. The results showed that AM fungi had differential effects on root traits and nutrients of E. adenophorum and A. annua seedlings, which increased dry weight, length, surface area, volume, tips and branching points in roots, specific root length and volume, root nitrogen (N) and phosphorus (P) contents under Cu, Su and Nu treatments. AM fungus was also associated with decreases in the average diameter for both species. Under the Cu treatment, E. adenophorum had significantly greater length, surface area, volume, tips and branching points of roots, specific root traits, and root N and P than A. annua. AM fungi changed root phenotypes and nutrient uptake for both invasive and native plant species via interconnected mycorrhizal networks. Overall, our results suggest that through mycorrhizal networks, the invasive plant experiences greater benefits than the native plant in the nutrient competition, which fosters root morphological developments in karst soil.

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Section: Introductionmentioning

confidence: 99%

An invasive plant experiences greater benefits of root morphology from enhancing nutrient competition associated with arbuscular mycorrhizae in karst soil than a native plant

Xia

Wang

et al. 2020

PLoS ONE

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“…Plant roots in diverse environments and those specifically in the vicinity of invasive ecosystems propagate several branches and grow horizontally, guaranteeing intense competition for nutrients and water (Su et al, 2018). As a result, when competing with the surrounding plants for such a confined nutrient availability, Chinese fir seedlings are known to increase their specific root length to improve nutrient acquisition and affect plant growth and development (Xu et al, 2019). Moreover, when combined with the arbuscular mycorrhizal network, the invasive plant exhibits considerable advantages related to nutrient availability, root growth traits, and root development process (Xia et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

The effect of soil microplastics on Oryza sativa L. root growth traits under alien plant invasion

Zhao

Iqbal

et al. 2023

Front. Ecol. Evol.

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Invasive alien plants pose severe threats to agroecosystems. Microplastic (MP) contamination in farmland soil is also concerning, as it causes crop stress and reduces productivity. However, the effects of the interactions between invasive alien plants and MP in the soil impact crops remain unclear. Herein, belowground plant characteristics associated with stress responses were examined in a pot experiment using root scan analyzes of rice plants exposed to Solidago canadensis L. invasion, polyethylene MP contamination, and a combined treatment. The observed changes in root growth traits under Canada goldenrod (Solidago canadensis L.) invasion were the least adverse, whereas S. canadensis invasion combined with soil MP contamination had the most adverse effects on root growth. Solidago canadensis L. invasion increased all belowground indices except root height and mean root diameter, which was upregulated in the soil MP contamination treatment. The combined treatment (S. canadensis invasion and soil MP contamination) reduced the belowground root growth traits more than the other treatments. The root growth traits may have been affected by changes in the antioxidant enzyme activity of the roots caused by the treatments. The combined effects of S. canadensis invasion and MP toxicity on rice root growth traits raise concerns regarding potential yields, financial damage, and consequences related to a potential move into the food web.

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Bamboo Expansion Affects the Vertical Distribution and Phenotypic Plasticity of Root Systems of Native Cunninghamia lanceolata and Expanding Phyllostachys edulis in Middle-Southern China

Li,

Huang,

Zhou

et al. 2023

Preprint

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It is commonly known that bamboo shoots reduce native diversity by spreading through neighboring communities via their rhizome systems. However, the mechanism of root interaction between native species and expanding bamboo is poorly understood. This study aims to explore the differences in parameters such as biomass vertical distribution and phenotypic plasticity of root orders between expanding species, specifically moso bamboo (Phyllostachys edulis, Pe), and native species, Chinese fir (Cunninghamia lanceolate, Cl), at different expansion levels. The results show a heterogeneous reaction to expansion effects. The root biomass of Chinese fir significantly decreased from CLS to PCM, while bamboo root biomass exhibited a similar but insignificant decreasing trend from PES to CPM. Both root systems remained concentrated at the uppermost layers, where the FRB ratio of Pe was higher than Cl, and the majority of phenotypic traits of Pe root systems were noticeably higher than that of Cl in both vertical and horizontal soil. Additionally, the study found that soil factors explained root traits well, with a cumulative variation ranging from 53.87–88.48%. The findings suggest that bamboo expansion affects spatial heterogeneity and niche differentiation of both native and expanding species. In terms of root distribution and plastic reaction, Chinese fir is at a disadvantage compared to expanding bamboo, which worsens its survival conditions.

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Effects of vertical phosphorus competition on root growth and biomass distribution of Chinese fir seedlings

Cited by 3 publications

References 0 publications

An invasive plant experiences greater benefits of root morphology from enhancing nutrient competition associated with arbuscular mycorrhizae in karst soil than a native plant

An invasive plant experiences greater benefits of root morphology from enhancing nutrient competition associated with arbuscular mycorrhizae in karst soil than a native plant

The effect of soil microplastics on Oryza sativa L. root growth traits under alien plant invasion

Bamboo Expansion Affects the Vertical Distribution and Phenotypic Plasticity of Root Systems of Native Cunninghamia lanceolata and Expanding Phyllostachys edulis in Middle-Southern China

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