Water availability alters the community structure of arbuscular mycorrhizal fungi and determines plant mycorrhizal benefit

Frew, Adam

doi:10.1002/ppp3.10372

Cited by 3 publications

(4 citation statements)

References 38 publications

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“…Therefore, plants might tend to invest more biomass to roots over shoots under drought, aiming to enhance nutrient and water uptake from soil (Eziz et al., 2017). However, the importance of the strategy of changing biomass allocation may be reduced (e.g., reduced R/S) when plants are associated with AM fungi (Frew, 2023), as AM fungi can partly mitigate the drought‐induced negative impacts on soil nutrients and water availability for plant growth (Abdalla et al., 2023; Augé, 2001). As a result, the mitigating effects of AM fungi on plant response to drought were only observed for shoot biomass, and not for root biomass.…”

Section: Discussionmentioning

confidence: 99%

“…The biomass allocation strategy (e.g., higher R/S under drought) is at the expense of shoot biomass, which might reduce the potential for plants to capture aboveground resources (e.g., light) used for photosynthesis (Poorter et al., 2012), thereby affecting plant growth. However, plants may tend to be less dependent on this strategy under drought when the resource benefits provided by AM fungi are sufficient to meet the growth of host plants (Frew, 2023). Unfortunately, whether and how AM fungi modulate the response of plant growth and their R/S to drought remains largely unknown.…”

Section: Introductionmentioning

confidence: 99%

“…According to the optimal partitioning theory, plants tend to allocate more biomass toward roots (red arrows in Figure 1) when belowground resources are limiting (Bloom et al., 1985). However, the importance of such a strategy may be reduced under drought when plants form a symbiotic relationship with AM fungi which improves the access of plants to belowground resources (Frew, 2023). Therefore, we also hypothesize that AM fungi could mitigate the negative effects of drought on shoot biomass (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

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Mycorrhization enhances plant growth and stabilizes biomass allocation under drought

Tang,

Man,

Romero

et al. 2024

Global Change Biology

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Plants and their symbionts, such as arbuscular mycorrhizal (AM) fungi, are increasingly subjected to various environmental stressors due to climate change, including drought. As a response to drought, plants generally allocate more biomass to roots over shoots, thereby facilitating water uptake. However, whether this biomass allocation shift is modulated by AM fungi remains unknown. Based on 5691 paired observations from 154 plant species, we conducted a meta‐analysis to evaluate how AM fungi modulate the responses of plant growth and biomass allocation (e.g., root‐to‐shoot ratio, R/S) to drought. We found that AM fungi attenuate the negative impact of drought on plant growth, including biomass production, photosynthetic performance and resource (e.g. nutrient and water) uptake. Accordingly, drought significantly increased R/S in non‐inoculated plants, but not in plants symbiotic with established AM fungal symbioses. These results suggest that AM fungi promote plant growth and stabilize their R/S through facilitating nutrient and water uptake in plants under drought. Our findings highlight the crucial role of AM fungi in enhancing plant resilience to drought by optimizing resource allocation. This knowledge opens avenues for sustainable agricultural practices that leverage symbiotic relationships for climate adaptation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mycorrhization enhances plant growth and stabilizes biomass allocation under drought

Tang,

Man,

Romero

et al. 2024

Global Change Biology

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“…The moisture gradient (from 32% to 74%) in the field may have had a crucial impact on the role of AMF in plant development, though there were no differences in AMF root colonization. Recent studies demonstrated that AMF can benefit plant growth and phosphorus uptake mostly under low water availability (Frew, 2023;Hu et al, 2020;Ramirez-Viga et al, 2018). On the other hand, all treatments in the experiment began from roots taken from only one place, to assume that the initial inoculum was similar.…”

Section: Treatments Amf Arbuscules Vesicles Dsfmentioning

confidence: 99%

Arbuscular mycorrhizal and dark septate fungi colonization in an invasive plant from Patagonian wetlands

Cuassolo,

Diaz‐Villanueva

2023

Austral Ecology

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Arbuscular mycorrhizal and dark septate fungi are common plant symbionts, but their role in promoting host plant fitness depends on environmental variables. Particularly in wetland plants, these associations are less understood. We analysed the role of arbuscular mycorrhizal fungi (AMF) and dark septate fungi (DSF) in the roots of Potentilla anserina (Rosaceae), an invasive species of Patagonia, widely distributed in wetlands. We tested three hypotheses: that fungi colonization varies according to soil moisture and nutrient content (nitrogen and phosphorus), that they enhance P. anserina nutrient content, and benefit plant growth. We measured the percentage of colonization in plants from five wetlands across a moisture gradient with different nutrient content, and performed a growth experiment with soil from these wetlands to evaluate changes in mycorrhizal and endophytic fungal colonization, aerial nutrient content and biomass production. In the field, root colonization by AMF was high in all sites (~90%), whereas DSF was less abundant (~20%), positively related to soil organic matter, and negatively related to soil phosphorus. In the experiment, DSF colonization was inversely related to increasing tissue N and P content. Potentilla anserina grew similarly in all the treatments, but biomass was positively related to DSF colonization. Our results provide evidence that DSF, rather than AMF, confer to this invasive species the ability to grow in soils with different water and nutrient content and may help to explain the wide distribution of this alien species in Patagonian wetlands.

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Ridge-furrow planting patterns with film mulching improve water use efficiency by enhancing arbuscular mycorrhizal fungi in the rhizosphere and endophyte of summer maize

Wang,

Guo,

Dong

et al. 2024

Agricultural Water Management

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Water availability alters the community structure of arbuscular mycorrhizal fungi and determines plant mycorrhizal benefit

Cited by 3 publications

References 38 publications

Mycorrhization enhances plant growth and stabilizes biomass allocation under drought

Mycorrhization enhances plant growth and stabilizes biomass allocation under drought

Arbuscular mycorrhizal and dark septate fungi colonization in an invasive plant from Patagonian wetlands

Ridge-furrow planting patterns with film mulching improve water use efficiency by enhancing arbuscular mycorrhizal fungi in the rhizosphere and endophyte of summer maize

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