Nurse effects mediated by acid-tolerance of target species and arbuscular mycorrhizal colonization in an acid soil

He, Lei; Xu, Jianming; Hu, Lan; Ren, Mingfa; Tang, Jianjun; Chen, Xin

doi:10.1007/s11104-019-04103-z

Cited by 9 publications

(7 citation statements)

References 61 publications

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“…Although this may be the result of reduced competition with seedlings, it is a pity that this was not tested in this experiment. These results support the notion that the outcomes of plant-plant interactions (facilitation or competition) can be affected by stress and niche optimization of invasive species (He et al, 2019;Qi et al, 2018;Soliveres et al, 2015). Here, we provided experimental evidence for the facilitation between adult invasive plants and neighboring seedlings through the AM fungal hypha connection.…”

Section: Discussionsupporting

confidence: 86%

“…AMF can increase competition among plants for aboveground light and space resource by enhancing plant growth (Yu et al, 2012; Zhang et al, 2011). Therefore, changes in aboveground traits of plants may affect the niche space of seedlings, thereby promoting the growth or survival of seedlings (He et al, 2019; Malanson, 2015). An interesting result is that the effects of AMF on adult plants and seedlings, such as reproductive allocation of seedlings, differ with or without RKN.…”

Section: Discussionmentioning

confidence: 99%

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Arbuscular mycorrhiza increases the facilitation between adult plant and seedling but root‐knot nematode inhibits it

Wang,

Zhou,

Tang

2024

Ecosphere

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Soil biotic and abiotic factors can affect the interaction between invasive and native species. However, it is not yet clear how arbuscular mycorrhizal (AM) symbiosis affects the interaction between adult invasive plants and neighboring seedlings. We used an invasive weed (Bidens frondosa) to test the hypothesis that adult invasive plants facilitate the growth of neighboring seedlings through AM symbiosis, and this facilitation can be inhibited by the biological stress of root‐knot nematode infection. The results showed that the height and total biomass of seedlings near the adult plant increased, indicating that the belowground effects mediated by AM symbiosis played a facilitative role. The positive growth response to resource allocation between adult plant and neighboring seedlings through mycorrhizal connection was inhibited when adult plants were infected by root‐knot nematode. Only the total biomass and root–shoot ratio of adult plants were increased, while seedling growth performance did not change. Our results supported the hypothesis that adult invasive plants can facilitate their neighboring seedlings growth through AM symbiosis and the benefits vary with biotic stress on adult plant. These findings provided important evidence to explain the role of AM symbiosis in plant invasion.

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Arbuscular mycorrhiza increases the facilitation between adult plant and seedling but root‐knot nematode inhibits it

Wang,

Zhou,

Tang

2024

Ecosphere

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“…In mixtures consisting of J. vulgaris and the forb L. vulgare, the grass A. capillaris or the legume T. pratense the presence of root-feeding nematodes resulted in a facilitative interaction between the two plant species or increased this interaction. Similar results have been shown for other belowground herbivores and other plant species, and this shows that root herbivores can not only alleviate competitive interactions between plants but can even result in facilitative effects (Graff and Aguiar 2011;Louthan et al 2014;de Matos et al 2019;He et al 2019). Further studies should examine how root herbivores cause or increase these facilitative interactions.…”

Section: Discussionsupporting

confidence: 82%

Associational resistance to nematodes and its effects on interspecific interactions among grassland plants

et al. 2022

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After 12 weeks, plant dry mass was assessed for each individual plant in each pot, and the number of nematodes in the soil and roots were identified. We then examined for each plant species its performance in mixtures and in monocultures, in presence and absence of nematodes and analyzed the abundance and composition of nematodes. Results Forbs produced more, grasses similar, and legumes less biomass in mixtures with J. vulgaris than in monocultures. Nematode addition did not influence biomass. There were fewer root-feeding nematodes in the soil in mixtures than in monocultures, but this was only true for plants that were good hosts for nematodes. The community composition of soil nematodes was different in monocultures and mixtures. Densities of migratory endoparasitic nematodes in the roots of neighboring plants were lower in mixtures than in monocultures. Moreover, the presence of nematodes changed the outcome of plantplant interactions, often in favor of J. vulgaris. Conclusions Jacobaea vulgaris provides belowground associational resistance to other plants against migratory endoparasitic nematodes, and the presence of nematodes can change the outcome of plant-plant interactions.

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“…The acid−tolerance index (ATI) of each plant was computed following He et al [ 29 ]:

where B i , max is the largest total biomass of the six plants at pH 5.6, with identical AMF inoculation, and B i is the total biomass of each of the six plants at pH levels of 2.5 and 4.0 (both are the stressful pH values in our study). Target species for which 0 < ATI < 0.3, 0.3 < ATI < 0.6, and ATI > 0.6, were considered as acid-sensitive, moderately acid-sensitive, and acid-tolerant, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Through symbiotic association, fungal partners obtain shelter and fixed carbon from the host plants and in return provide multiple benefits to these plants, such as improved uptake of mineral nutrients, especially phosphorus and other relatively immobile micronutrients such as zinc, magnesium, copper, and calcium, reduced oxidative stress, and maintained water balance, which can positively impact plant growth and improve resistance to abiotic stresses [ 22 , 23 , 24 , 25 ]. Although AMF may be adversely affected by SAR [ 20 , 26 , 27 ], some studies have reported enhanced growth and performance of mycorrhizal plants under SAR conditions [ 28 , 29 , 30 ]. For example, mycorrhizal inoculation positively affects the growth and nutrient uptake of Sorghum bicolor [ 30 ], Calamagrostis villosa [ 31 ], Koelreuteria paniculata [ 32 ], and Thuja occidentalis [ 28 ], whereas it has little to no effect on the growth of Deschampsia flexuosa [ 31 ] under simulated SAR.…”

Section: Introductionmentioning

confidence: 99%

Improved Tolerance of Mycorrhizal Torreya grandis Seedlings to Sulfuric Acid Rain Related to Phosphorus and Zinc Contents in Shoots

Xia

Shao

Zhang

et al. 2021

JoF

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Acid rain (AR) is an increasingly serious environmental problem that frequently occurs in Southern China with sulfuric acid rain (SAR) as the main type. SAR can negatively affect the growth and physiological properties of trees, but mycorrhizal associations may mitigate such detrimental effects. However, the mechanisms by which arbuscular mycorrhizal fungi control SAR-induced impacts on Torreya grandis plants remain unclear. A pot experiment was conducted on T. grandis seedlings, an economically important tree species in Southern China, in which inoculated and non-inoculated T. grandis seedlings were subjected to three simulated SAR regimes (pH of 5.6, 4.0, and 2.5, respectively) to examine the effects on the growth, osmotic regulation, and nutrient absorption of these seedlings. The results show that, although SAR had no effect on the accumulation of biomass, it significantly decreased the concentrations of proline and soluble protein, shoot Zn2+, P, K+, and Ca2+ concentrations, and the Fe2+ and Mn2+ concentrations of shoots and roots. Mycorrhizal inoculation, especially with Rhizophagus irregularis, significantly increased total biomass, proline concentration, and the Zn2+, P, and K+ concentrations in the shoots of T. grandis under lower pH conditions. Moreover, our findings suggest that the combination of root colonization, acid tolerance, and the concentrations of shoot-P, shoot-Zn2+, and root-Fe2+ of T. grandis jointly conferred mycorrhizal benefits on the plants under SAR conditions. Given the enhancement of the nutritional quality of T. grandis owing to mycorrhizal associations, inoculation with R. irregularis may be preferable for the culturing and management of these plants under acidic conditions.

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Nurse effects mediated by acid-tolerance of target species and arbuscular mycorrhizal colonization in an acid soil

Cited by 9 publications

References 61 publications

Arbuscular mycorrhiza increases the facilitation between adult plant and seedling but root‐knot nematode inhibits it

Arbuscular mycorrhiza increases the facilitation between adult plant and seedling but root‐knot nematode inhibits it

Associational resistance to nematodes and its effects on interspecific interactions among grassland plants

Improved Tolerance of Mycorrhizal Torreya grandis Seedlings to Sulfuric Acid Rain Related to Phosphorus and Zinc Contents in Shoots

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