Untapping the potential of plant mycobiomes for applications in agriculture

Pozo, Marı́a J.; Zabalgogeazcoa, Íñigo; Aldana, Beatriz R. Vázquez de; Martínez‐Medina, Ainhoa

doi:10.1016/j.pbi.2021.102034

Cited by 73 publications

(77 citation statements)

References 101 publications

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“…For years, light conditions have been manipulated to improve plant yield and/or quality. The use of microbial inoculants is also a growing trend in modern agriculture, aiming at more sustainable crop management systems, and beneficial fungi have proved their efficiency in improving plant health in different systems [ 4 , 7 ]. Exploring and improving the compatibility between inoculations with beneficial microbes and agriculture practices are major goals of modern agriculture research [ 68 ].…”

Section: Discussionmentioning

confidence: 99%

“…In this context, the use of microbial inoculants increasing in popularity due to their beneficial effects on plant growth and performance [ 1 ]. Beneficial plant–microbe interactions are widespread in nature, and their potential benefits for plant growth and health are well documented [ 2 , 3 , 4 ]. Some of the mechanisms underlying such benefits have been unveiled, usually under controlled lab conditions [ 1 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…Among soil-benefiting microbes, arbuscular mycorrhizal fungi (AMF) are of utmost ecological importance and have great potential for sustainable crop management [ 4 , 10 , 11 ]. AMF establish intimate mutualistic associations, known as arbuscular mycorrhizas (AM), with the roots of more than 70% of terrestrial plant species, including most vegetable crops [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

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Mycorrhiza-Induced Resistance against Foliar Pathogens Is Uncoupled of Nutritional Effects under Different Light Intensities

Hoz

Rivero

Azcón‐Aguilar

et al. 2021

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The use of microbial inoculants, particularly arbuscular mycorrhizal fungi, has great potential for sustainable crop management, which aims to reduce the use of chemical fertilizers and pesticides. However, one of the major challenges of their use in agriculture is the variability of the inoculation effects in the field, partly because of the varying environmental conditions. Light intensity and quality affect plant growth and defense, but little is known about their impacts on the benefits of mycorrhizal symbioses. We tested the effects of five different light intensities on plant nutrition and resistance to the necrotrophic foliar pathogen Botrytis cinerea in mycorrhizal and non-mycorrhizal lettuce plants. Our results evidence that mycorrhiza establishment is strongly influenced by light intensity, both regarding the extension of root colonization and the abundance of fungal vesicles within the roots. Light intensity also had significant effects on plant growth, nutrient content, and resistance to the pathogen. The effect of the mycorrhizal symbiosis on plant growth and nutrient content depended on the light intensity, and mycorrhiza efficiently reduced disease incidence and severity under all light intensities. Thus, mycorrhiza-induced resistance can be uncoupled from mycorrhizal effects on plant nutrition. Therefore, mycorrhizal symbioses can be beneficial by providing biotic stress protection even in the absence of nutritional or growth benefits.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mycorrhiza-Induced Resistance against Foliar Pathogens Is Uncoupled of Nutritional Effects under Different Light Intensities

Hoz

Rivero

Azcón‐Aguilar

et al. 2021

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“…Although Epichloë endophytes are not present in plant roots, their presence in aboveground plant tissues can affect several belowground processes (Omacini et al, 2012;Rojas et al, 2016). Epichloë is one of the best known taxa of endophytic fungi in aboveground tissues, but for most components of root mycobiomes, their functions as plant symbionts, as well as their life cycles, are unknown (Pozo et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

The Role of Fungal Microbiome Components on the Adaptation to Salinity of Festuca rubra subsp. pruinosa

et al. 2021

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Festuca rubra subsp. pruinosa is a perennial grass that inhabits sea cliffs, a habitat where salinity and low nutrient availability occur. These plants have a rich fungal microbiome, and particularly common are their associations with Epichloë festucae in aboveground tissues and with Fusarium oxysporum and Periconia macrospinosa in roots. In this study, we hypothesized that these fungi could affect the performance of F. rubra plants under salinity, being important complements for plant habitat adaptation. Two lines of F. rubra, each one consisting of Epichloë-infected and Epichloë-free clones, were inoculated with the root endophytes (F. oxysporum and P. macrospinosa) and subjected to a salinity treatment. Under salinity, plants symbiotic with Epichloë had lower Na+ content than non-symbiotic plants, but this effect was not translated into plant growth. P. macrospinosa promoted leaf and root growth in the presence and absence of salinity, and F. oxysporum promoted leaf and root growth in the presence and absence of salinity, plus a decrease in leaf Na+ content under salinity. The growth responses could be due to functions related to improved nutrient acquisition, while the reduction of Na+ content might be associated with salinity tolerance and plant survival in the long term. Each of these three components of the F. rubra core mycobiome contributed with different functions, which are beneficial and complementary for plant adaptation to its habitat in sea cliffs. Although our results do not support an obvious role of Epichloë itself in FRP salt tolerance, there is evidence that Epichloë can interact with root endophytes, affecting host plant performance.

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“…The most obvious applications for arbuscular mycorrhizae is in agriculture, with fungi acting as biostimulants (e.g., increasing crop stress tolerance), biofertilizers (e.g., increasing nutrient availability) and biopesticides/biocontrol agents (e.g., reduce crop loss from infectious disease, reviewed in [ 203 ]). It seems clear that full understanding of the plant mycobiome, and how this is mechanistically mediated by secreted effector proteins, will enable the development of renewable, environmentally inert agricultural technologies.…”

Section: Interspecies Communicationmentioning

confidence: 99%

Turning Inside Out: Filamentous Fungal Secretion and Its Applications in Biotechnology, Agriculture, and the Clinic

Cairns

Zheng

et al. 2021

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Filamentous fungi are found in virtually every marine and terrestrial habitat. Vital to this success is their ability to secrete a diverse range of molecules, including hydrolytic enzymes, organic acids, and small molecular weight natural products. Industrial biotechnologists have successfully harnessed and re-engineered the secretory capacity of dozens of filamentous fungal species to make a diverse portfolio of useful molecules. The study of fungal secretion outside fermenters, e.g., during host infection or in mixed microbial communities, has also led to the development of novel and emerging technological breakthroughs, ranging from ultra-sensitive biosensors of fungal disease to the efficient bioremediation of polluted environments. In this review, we consider filamentous fungal secretion across multiple disciplinary boundaries (e.g., white, green, and red biotechnology) and product classes (protein, organic acid, and secondary metabolite). We summarize the mechanistic understanding for how various molecules are secreted and present numerous applications for extracellular products. Additionally, we discuss how the control of secretory pathways and the polar growth of filamentous hyphae can be utilized in diverse settings, including industrial biotechnology, agriculture, and the clinic.

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Untapping the potential of plant mycobiomes for applications in agriculture

Cited by 73 publications

References 101 publications

Mycorrhiza-Induced Resistance against Foliar Pathogens Is Uncoupled of Nutritional Effects under Different Light Intensities

Mycorrhiza-Induced Resistance against Foliar Pathogens Is Uncoupled of Nutritional Effects under Different Light Intensities

The Role of Fungal Microbiome Components on the Adaptation to Salinity of Festuca rubra subsp. pruinosa

Turning Inside Out: Filamentous Fungal Secretion and Its Applications in Biotechnology, Agriculture, and the Clinic

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