Dark septate endophytic fungi mitigate the effects of salt stress on cowpea plants

Farias, Gabriel Castro; Nunes, Kenya Gonçalves; Soares, Marcos Antônio; Siqueira, Kátia Aparecida de; Lima, William Cardoso; Neves, Antônia Leila Rocha; Lacerda, Claudivan Feitosa de; Gomes-Filho, Enéas

doi:10.1007/s42770-019-00173-4

Cited by 47 publications

(32 citation statements)

References 60 publications

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“…However, no signi cant changes were observed between inoculated A. ordosica (AC, PC) and control plants. These results indicate that DSE did not seem to limit the translocation of Na + to the aboveground plant parts, which agrees with the results of Farias et al [34]. In addition, the DSE signi cantly directly affected the Na + content in the roots of A. ordosica.…”

Section: Discussionsupporting

confidence: 91%

“…However, the effects of DSE on host plant performance and tness remain unknown, especially under salt-stress conditions. DSE isolated from wetlands or coastal areas have been found to alleviate the adverse effects of salt stress on plant growth [33][34][35][36]. Pan et al [33] reported that Curvularia spp.…”

Section: Introductionmentioning

confidence: 99%

“…isolated from Suaeda salsa could alleviate the adverse effects of salt stress on Populus tomentosa by increasing both antioxidant enzyme activity and the content of chlorophyll and proline in the leaves. Farias et al [34] reported that inoculation with DSE improved the absorption of nitrogen and phosphorus in Vigna unguiculata under salt stress, which was bene cial for increasing plant growth and net photosynthesis. In addition, rhizosphere-associated microbes have important functions in the maintenance of soil nutrient availability, which have positive impacts on the tolerance of host plants to salt stress [37,38].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Dark Septate Endophytes on Plant Performance of Artemisia Ordosica and Associated Soil Microbial Community Under Salt Stress

Hou

et al. 2020

Preprint

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Background: Fungal endophytes can improve plant tolerance to abiotic stress, however, the role of these plant–fungal interactions in desert species ecology and their management implications remain unclear. This study aimed to assess whether dark septate endophytes (DSE) can shift the performance of Artemisia ordosica and associated soil microbial community under salt stress.Methods: We investigated the effects of three DSE (Alternaria chlamydosporigena [AC], Paraphoma chrysanthemicola [PC] and Bipolaris sorokiniana [BS]) isolated from desert habitats on plant morphology, physiology and rhizosphere soil microhabitat of Artemisia ordosica seedlings under different NaCl concentrations (0 %, 0.1 %, 0.2 %, and 0.3 %) in a growth chamber. Results: Three DSE strains could colonize the roots of A. ordosica, and the symbiotic response with host plants depended on DSE species and NaCl concentration. The greatest benefits associated with DSE occurred under 0.1 % NaCl. Specifically, AC improved root morphology, and increased total biomass and superoxide dismutase (SOD) activity; PC increased root morphology, root biomass, and glutathione (GSH) and indoleacetic acid (IAA) contents; and BS promoted SOD activity and GSH and IAA contents. DSE reduced the root Na+ content. Interestingly, BS promoted gram-positive (G +) and gram-negative (G −) bacteria under 0.1 % NaCl and the abundance of AM fungi under 0.2 % and 0.3 % NaCl. PC positively affected fungi, AM fungi, G − bacteria and actinomycetes under 0.2 % and 0.3 % NaCl, while AC increased the abundance of all examined microbes under 0.3 % NaCl. A structural equation modeling (SEM) demonstrated that DSE not only positively affects A. ordosica performance but also directly or indirectly impacts soil microbes by regulating the soil organic carbon (SOC), available phosphorus (AP), and alkaline nitrogen (AN) content.Conclusions: DSE isolated from A. ordosica enhanced the root development of host plants and altered the soil nutrient content and soil microbiota under different NaCl concentrations, possibly contributing to plant growth and ecological adaptability under saline environment. These results contribute to the understanding of the ecological function of DSE in desert ecosystems and may be used to promote vegetation restoration in salinized desert areas.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Dark Septate Endophytes on Plant Performance of Artemisia Ordosica and Associated Soil Microbial Community Under Salt Stress

Hou

et al. 2020

Preprint

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“…This results in extensive monospecific forests known as Cambarazal (Dalmolin et al, 2018). This plant hosts numerous endophytic fungi (Biz et al, 2017), which in turn help the host plant to mitigate environmental stress like salinity (Farias et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Because the association of V. divergens with endophytic microorganisms is poorly understood, and since the chemical profile and biological potential of its microbiota remains partially unknown, our research group has been dedicated to the chemical study of this plant species (Pimenta et al, 2015) and its chemical interaction with its endophytic microbiota (Parpinelli et al, 2017;Pimenta et al, 2017;de Oliveira et al, 2018;Farias et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Chemical composition and in vitro cytotoxicity of Corynespora olivacea (V18) associated with Vochysia divergens / Composição química e citotoxicidade in vitro de Corynespora olivacea (V18) associada a Vochysia divergens

Filho

Picão

et al. 2021

BASR

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Are plant traits drivers of endophytic communities in seasonally flooded tropical forests?

Boisseaux,

Troispoux,

Bordes

et al. 2024

American J of Botany

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PremiseIn the Amazon basin, seasonally flooded (SF) forests offer varying water constraints, providing an excellent way to investigate the role of habitat selection on microbial communities within plants. However, variations in the microbial community among host plants cannot solely be attributed to environmental factors, and how plant traits contribute to microbial assemblages remains an open question.MethodsWe described leaf‐ and root‐associated microbial communities using ITS2 and 16 S high‐throughput sequencing and investigated the stochastic‐deterministic balance shaping these community assemblies using two null models. Plant ecophysiological functioning was evaluated by focusing on 10 leaf and root traits in 72 seedlings, belonging to seven tropical SF tree species in French Guiana. We then analyzed how root and leaf traits drove the assembly of endophytic communities.ResultsWhile both stochastic and deterministic processes governed the endophyte assembly in the leaves and roots, stochasticity prevailed. Discrepancies were found between fungi and bacteria, highlighting that these microorganisms have distinct ecological strategies within plants. Traits, especially leaf traits, host species and spatial predictors better explained diversity than composition, but they were modest predictors overall.ConclusionsThis study widens our knowledge about tree species in SF forests, a habitat sensitive to climate change, through the combined analyses of their associated microbial communities with functional traits. We emphasize the need to investigate other plant traits to better disentangle the drivers of the relationship between seedlings and their associated microbiomes, ultimately enhancing their adaptive capacities to climate change.

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Dark septate endophytic fungi mitigate the effects of salt stress on cowpea plants

Cited by 47 publications

References 60 publications

Effect of Dark Septate Endophytes on Plant Performance of Artemisia Ordosica and Associated Soil Microbial Community Under Salt Stress

Effect of Dark Septate Endophytes on Plant Performance of Artemisia Ordosica and Associated Soil Microbial Community Under Salt Stress

Chemical composition and in vitro cytotoxicity of Corynespora olivacea (V18) associated with Vochysia divergens / Composição química e citotoxicidade in vitro de Corynespora olivacea (V18) associada a Vochysia divergens

Are plant traits drivers of endophytic communities in seasonally flooded tropical forests?

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