The arbuscular mycorrhizal fungus Rhizophagus irregularis harmonizes nuclear dynamics in the presence of distinct abiotic factors

Cornell, Calvin; Kokkoris, Vasilis; Turcu, Bianca; Dettman, Jeremy R.; Stefani, Franck; Corradi, Nicolas

doi:10.1016/j.fgb.2021.103639

Cited by 15 publications

(15 citation statements)

References 43 publications

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“…Similarly, an evolutionary experiment showed that low relatedness of nuclei in N. crassa heterokaryon leads reduced cooperation and lower spore production due to cheater nuclei, which invest less into somatic functions and growth ( Bastiaans et al, 2016 ). By contrast, nuclear ratios in Rhizophagus irregularis changed in response to the abiotic environment ( Cornell et al, 2022 ) and a host plant shift ( Angelard et al, 2010 ), with better adapted genotypes increasing in frequency. In addition, NGH seems to be important in fungicide resistance.…”

Section: The Role Of Nuclear Genotype Heterogeneity In Competition Co...mentioning

confidence: 98%

“…Heterokaryons are advantageous in variable environments because nuclear ratios can shift depending on the environment ( Scott et al, 2019 ; Zhang et al, 2019 ; Cornell et al, 2022 ). Theoretically, if a nuclear genotype has decreased fitness, it could still be sustained within the mycelium at lower counts.…”

Section: Nuclear Genotype Heterogeneity and Dynamicsmentioning

confidence: 99%

“…However, nuclei can cooperate and Ma et al (2016) show that mycelium of N. crassa is comprised of subpopulations of nuclei that reproduce together and function as “reproductive units.” The third point to consider is that the distribution of NGH across the mycelium can create phenotypic heterogeneity within mycelium where selection could then act on this heterogeneity. While some studies show that nuclear ratios are evenly distributed or homogenised across the mycelium ( Meunier et al, 2018 ; Cornell et al, 2022 ) there is evidence of uneven nuclear distribution as well ( He et al, 2021 ). Homogenisation is possibly achieved via nuclear movement through mycelium ( Roper et al, 2011 ).…”

Section: The Role Of Nuclear Genotype Heterogeneity In Competition Co...mentioning

confidence: 99%

“…Such nuclear organisation is especially interesting in the context of tolerance for genetic heterogeneity within the mycelium. Research focussed on nuclei in filamentous fungi has been expanding over the past decades, and data is accumulating for intra-mycelial genetic diversity ( Wyss et al, 2016 ), pathogenicity ( Ma et al, 2010 ; Shahi et al, 2016 ), nuclear dynamics ( Roper et al, 2013 ; Roper and Dressaire, 2019 ; Kokkoris et al, 2020 , 2021 ; Cornell et al, 2022 ) and multilevel selection ( James et al, 2008 ; Samils et al, 2014 ). However, it is still a challenge to quantify nuclear movement (especially on scales larger than few cm), interactions (e.g., competition through transcription factors), genetic variability (e.g., due to spontaneous mutations) and most importantly how all these phenomena contribute to the phenotype.…”

Section: Introductionmentioning

confidence: 99%

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A Nuclei-Based Conceptual Model of (Eco)evolutionary Dynamics in Fungal Heterokaryons

Lakovic

Rillig

2022

Front. Microbiol.

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Filamentous fungi are characterised by specific features, such as multinuclearity, coexistence of genetically different nuclei and nuclear movement across the mycelial network. These attributes make them an interesting, yet rather underappreciated, system for studying (eco)evolutionary dynamics. This is especially noticeable among theoretical studies, where rather few consider nuclei and their role in (eco)evolutionary dynamics. To encourage such theoretical approaches, we here provide an overview of existing research on nuclear genotype heterogeneity (NGH) and its sources, such as mutations and vegetative non-self-fusion. We then discuss the resulting intra-mycelial nuclear dynamics and the potential consequences for fitness and adaptation. Finally, we formulate a nuclei-based conceptual framework, which considers three levels of selection: a single nucleus, a subpopulation of nuclei and the mycelium. We compare this framework to other concepts, for example those that consider only the mycelium as the level of selection, and outline the benefits of our approach for studying (eco)evolutionary dynamics. Our concept should serve as a baseline for modelling approaches, such as individual-based simulations, which will contribute greatly to our understanding of multilevel selection and (eco)evolutionary dynamics in filamentous fungi.

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Section: The Role Of Nuclear Genotype Heterogeneity In Competition Co...mentioning

confidence: 98%

Section: Nuclear Genotype Heterogeneity and Dynamicsmentioning

confidence: 99%

Section: The Role Of Nuclear Genotype Heterogeneity In Competition Co...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Nuclei-Based Conceptual Model of (Eco)evolutionary Dynamics in Fungal Heterokaryons

Lakovic

Rillig

2022

Front. Microbiol.

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“…P availability is usually low in soils around the globe. Moreover, the low efficacy of P fertilizers in acidic and calcareous soils restricts P availability [4]. Recently, it has become increasingly difficult for small-scale farmers in developing countries to purchase chemical P fertilizers.…”

Section: Introductionmentioning

confidence: 99%

Phosphate Solubilization Improvement for Plant Uptake from Phosphate Rock and Phosphate Solubilizing Microbes Consortium: Impact on Food Security

Bello¹,

Muhammad²,

Aliero³

et al. 2023

Sustainable Development

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Poverty alleviation in Sub-Saharan Africa is proportionally dependent on soil management. Low crop productivity has been linked to hunger and poverty as soil degradation is undeniably the cause. This chapter gives a general overview from major findings on how microbes could improve phosphate (P) levels in soils by enhancing its solubility. A cross-sectional study was under taken to highlight the role played by phosphate-solubilizing microbes—arbuscular mycorhizal fungi (AMF) and phosphate-solubilizing bacteria (PSB) in improving phosphate solubility. About 30–50% of phosphorus is organic which the plants could readily assimilate, while 50–70% is inorganic and inaccessible to plants. There are several mechanisms the plants utilize to optimize nutrient uptake from the root hairs to various parts of the plant to maximize crop production. The utilization of readily available minerals such as phosphate rock is known to play vital role in plant ecology and evolution, in checking drought stress, heavy metal toxicity, nutritional imbalances, plant pathogens, and salinity. Therefore, soil improvement using rock phosphate could potentially act in synergy with the phosphate-solubilizing microbes to boost phosphate levels in the soil. This could be a welcome development in low-income economies in the sub-Saharan Africa (SSA) to boost yield for profit maximization.

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Genomes of Arbuscular Mycorrhizal Fungi

Dallaire

Paszkowski

2022

Plant Relationships

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The arbuscular mycorrhizal fungus Rhizophagus irregularis harmonizes nuclear dynamics in the presence of distinct abiotic factors

Cited by 15 publications

References 43 publications

A Nuclei-Based Conceptual Model of (Eco)evolutionary Dynamics in Fungal Heterokaryons

A Nuclei-Based Conceptual Model of (Eco)evolutionary Dynamics in Fungal Heterokaryons

Phosphate Solubilization Improvement for Plant Uptake from Phosphate Rock and Phosphate Solubilizing Microbes Consortium: Impact on Food Security

Genomes of Arbuscular Mycorrhizal Fungi

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