Epichloë endophyte affects the root colonization pattern of belowground symbionts in a wild grass

Terlizzi, Natalia L.; Rodríguez, Martha; Iannone, Leopoldo Javier; Lanari, E.; Novas, María Victoria

doi:10.1016/j.funeco.2022.101143

Cited by 5 publications

(4 citation statements)

References 67 publications

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“…An in vitro experiment conducted on the native grass Bromus setifolius revealed that exudates of Epichloë species and endophyte-infected plants improved planta yield and also increased the mycelium length of AMF Gigaspora rosea by 100–200%, suggesting that Epichloë exudates enhance plant growth and yields, particularly through enhancing AMF development [ 70 ]. Furthermore, the association between Bromus catharticus and grass endophytes enhanced the mycorrhizal colonization of Lolium multiflorum , Schedonorus arundinaceus , and Bromus catharticus [ 71 ]. Colonization of Lolium perenne by mycorrhizal fungi reduced the abundance of grass endophytes and the secretion of anti-herbivore-associated alkaloids peramine and lolitrem B [ 46 ].…”

Section: Effect Of Grass Endophyte On Arbuscular Mycorrhizamentioning

confidence: 99%

The Interaction between Arbuscular Mycorrhizal Fungi (AMF) and Grass Endophyte (Epichloë) on Host Plants: A Review

Shen,

Duan

2024

JoF

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In nature, plants frequently experience concurrent colonization with arbuscular mycorrhizal fungi (AMF) and grass endophytes (Epichloë). These two fungi assist in mineral uptake and stress tolerance by the host. Despite the abundance of recent studies exploring the individual functions of these fungi in diverse ecosystems, research on the effects of the interaction between these two symbiotic fungi on the host, particularly in agricultural production and ecological conservation. This review provides an overview of the current knowledge regarding the interaction between AMF and grass endophytes and their synergistic effects on host plants in response to abiotic and biotic stress, while also outlining prospects for future research in this field. This knowledge not only enhances our comprehension of complex interaction effects between the two fungi, but also facilitates the optimal utilization of fungal resources, contributing to ecological construction and higher agricultural production.

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Section: Effect Of Grass Endophyte On Arbuscular Mycorrhizamentioning

confidence: 99%

The Interaction between Arbuscular Mycorrhizal Fungi (AMF) and Grass Endophyte (Epichloë) on Host Plants: A Review

Shen,

Duan

2024

JoF

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“…Endophyte-colonised tall fescue microbiomes had, in general, a very diverse fungal population at the genus level. Fungi associated with E− and E+ also showed a significant shift from basidiomycetes to ascomycetes, respectively [ 34 ].…”

Section: Grass–endophyte Interactionsmentioning

confidence: 99%

Grass–Endophyte Interactions and Their Associated Alkaloids as a Potential Management Strategy for Plant Parasitic Nematodes

Mwangi,

Stevens,

Wright

et al. 2024

Toxins

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Claviceptaceous endophytic fungi in the genus Epichloë mostly form a symbiotic relationship with cool-season grasses. Epichloë spp. are capable of producing bioactive alkaloids such as peramines, lolines, ergot alkaloids, and indole-diterpenes, which protect the host plant from herbivory by animals, insects, and nematodes. The host also benefits from enhanced tolerance to abiotic stresses, such as salt, drought, waterlogging, cold, heavy metals, and low nitrogen stress. The bioactive alkaloids produced can have both direct and indirect effects towards plant parasitic nematodes. Direct interaction with nematodes’ motile stages can cause paralysis (nematostatic effect) or death (nematicidal effect). Indirectly, the metabolites may induce host immunity which inhibits feeding and subsequent nematode development. This review highlights the different mechanisms through which this interaction and the metabolites produced have been explored in the suppression of plant parasitic nematodes and also how the specific interactions between different grass genotypes and endophyte strains result in variable suppression of different nematode species. An understanding of the different grass–endophyte interactions and their successes and failures in suppressing various nematode species is essential to enable the proper selection of grass–endophyte combinations to identify the alkaloids produced, concentrations required, and determine which nematodes are sensitive to which specific alkaloids.

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“…These root-associated microorganisms promote plant growth through root-hair proliferation, enhancing soil fertility; increase in nitrogen fixation ability; enhanced leaf surface area; improvement in vigor and biomass; increased indigenous plant hormones levels; and most importantly, by improving nutrient use efficiency (Fan et al, 2020;Singh R. K. et al, 2022). The most studied microorganisms that are affected by the Epichloë endophytes are AMF, and the results have shown that Epichloë endophytes can change the colonization, diversity and community of AMF (Vignale et al, 2016;Liu et al, 2020Liu et al, , 2022aTerlizzi et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…A. et al, 2021 ; Singh R. K. et al, 2022 ). The most studied microorganisms that are affected by the Epichloë endophytes are AMF, and the results have shown that Epichloë endophytes can change the colonization, diversity and community of AMF ( Vignale et al, 2016 ; Liu et al, 2020 , 2022a , b ; Terlizzi et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Epichloë endophyte interacts with saline-alkali stress to alter root phosphorus-solubilizing fungal and bacterial communities in tall fescue

Liu

Tang

et al. 2022

Front. Microbiol.

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Epichloë endophytes, present in aboveground tissues, modify belowground microbial community. This study was conducted to investigate endophyte (Epichloë coenophialum) associated with tall fescue (Lolium arundinaceum) interacted with an altered saline-alkali stress (0, 200 and 400 mmol/l) to affect the belowground phosphorus solubilizing microorganisms including phosphorus solubilizing fungi (PSF) and bacteria (PSB). We found that a significant interaction between E. coenophialum and saline-alkali stress occurred in the diversity and composition of PSF in tall fescue roots. Under saline-alkali stress conditions (200 and 400 mmol/l), E. coenophialum significantly increased the PSF diversity and altered its composition in the roots, decreasing the relative abundance of dominant Cladosporium and increasing the relative abundance of Fusarium. However, there was no significant interaction between E. coenophialum and saline-alkali stress on the PSB diversity in tall fescue roots. E. coenophialum significantly reduced the diversity of PSB in the roots, and E. coenophialum effects did not depend on the saline-alkali stress treatment. Structural equation modeling (SEM) showed that E. coenophialum presence increased soil available phosphorus concentration under saline-alkali stress primarily by affecting PSF diversity instead of the diversity and composition of PSB.

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Epichloë endophyte affects the root colonization pattern of belowground symbionts in a wild grass

Cited by 5 publications

References 67 publications

The Interaction between Arbuscular Mycorrhizal Fungi (AMF) and Grass Endophyte (Epichloë) on Host Plants: A Review

The Interaction between Arbuscular Mycorrhizal Fungi (AMF) and Grass Endophyte (Epichloë) on Host Plants: A Review

Grass–Endophyte Interactions and Their Associated Alkaloids as a Potential Management Strategy for Plant Parasitic Nematodes

Epichloë endophyte interacts with saline-alkali stress to alter root phosphorus-solubilizing fungal and bacterial communities in tall fescue

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