Elucidating the Strategies for Isolation of Endophytic Fungi and Their Functional Attributes for the Regulation of Plant Growth and Resilience to Stress

Toppo, Prabha; Subba, Rewaj; Roy, Kuheli; Bhatla, Satish C.; Mathur, Piyush

doi:10.1007/s00344-022-10638-w

Cited by 11 publications

(7 citation statements)

References 149 publications

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“…For example, Preussia and Archaeorhizomyces which were dominated in our samples. Preussia can produced glucosidases, phosphatases, cellulases, and IAA to promote plant development under stressful environmental conditions ( Kandar et al, 2018 , Toppo et al, 2022 ). Archaeorhizomyces can enhance plant bioactive components, improve stress resistance, and alleviate the occurrence of diseases ( Zhang et al, 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Fungal community remediate quartz tailings soil under plant combined with urban sludge treatments

Dong

Zhu

et al. 2023

Front. Microbiol.

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IntroductionTailings can cause extensive damage to soil structure and microbial community. Phytoremediation is an effective strategy for remedied tailings soil due to its environmentally friendly and low-cost advantage. Fungi play a crucial role in nutrient cycling, stress resistance, stabilizing soil structure, and promoting plant growth. However, the fungal community variation in phytoremediation remains largely unexplored.MethodsWe analyzed soil fungal community based on high-throughput sequencing during three plant species combined with urban sludge to remediate quartz tailings soil.ResultsThe results indicated that the fungal diversity was significantly increased with plant diversity, and the highest fungal diversity was in the three plant species combination treatments. Moreover, the fungal diversity was significantly decreased with the addition of urban sludge compared with plant treatments, while the abundance of potential beneficial fungi such as Cutaneotrichosporon, Apiotrichum, and Alternaria were increased. Notably, the fungal community composition in different plant species combination treatments were significant difference at the genus level. The addition of urban sludge increased pH, available phosphorus (AP), and available nitrogen (AN) content that were the main drivers for fungal community composition. Furthermore, the fungal networks of the plant treatments had more nodes and edges, higher connectedness, and lower modularity than plant combined with urban sludge treatments.ConclusionOur results showed that three plant species combined with urban sludge treatments improved fungal community and soil properties. Our results provide insights for quartz tailings soil remediation using plant-fungi- urban sludge.

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Section: Discussionmentioning

confidence: 99%

Fungal community remediate quartz tailings soil under plant combined with urban sludge treatments

Dong

Zhu

et al. 2023

Front. Microbiol.

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“…Many fungal endophytes can establish a mutualistic relationship with plant roots, in which the fungi can improve the growth and stress resistance of their host plant through mechanisms such as phosphorus transmission, stimulation of proline, glycine betaine production, increase of plant indoleacetic acid concentration etc . ( Liu et al, 2023b ; Miranda et al, 2023 ; Toppo et al, 2023 ). In a recent study, Ma et al (2023) showed that the mutualistic growth of a fungal endophyte ( Phomopsis liquidambaris ) in the plant ( Arachis hypogaea L.) roots not only promoted host growth and disease control, but also reshaped the core root bacterial taxa.…”

Section: Discussionmentioning

confidence: 99%

The rhizosphere and root selections intensify fungi-bacteria interaction in abiotic stress-resistant plants

Huang,

Lei,

2024

PeerJ

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The microbial communities, inhabiting around and in plant roots, are largely influenced by the compartment effect, and in turn, promote the growth and stress resistance of the plant. However, how soil microbes are selected to the rhizosphere, and further into the roots is still not well understood. Here, we profiled the fungal, bacterial communities and their interactions in the bulk soils, rhizosphere soils and roots of eleven stress-resistant plant species after six months of growth. The results showed that the root selection (from the rhizosphere soils to the roots) was stronger than the rhizosphere selection (from the bulk soils to the rhizosphere soils) in: (1) filtering stricter on the fungal (28.5% to 40.1%) and bacterial (48.9% to 68.1%) amplicon sequence variants (ASVs), (2) depleting more shared fungal (290 to 56) and bacterial (691 to 2) ASVs measured by relative abundance, and (3) increasing the significant fungi-bacteria crosskingdom correlations (142 to 110). In addition, the root selection, but not the rhizosphere selection, significantly increased the fungi to bacteria ratios (f:b) of the observed species and shannon diversity index, indicating unbalanced effects to the fungal and bacteria communities exerted by the root selection. Based on the results of network analysis, the unbalanced root selection effects were associated with increased numbers of negative interaction (140 to 99) and crosskingdom interaction (123 to 92), suggesting the root selection intensifies the negative fungi-bacteria interactions in the roots. Our findings provide insights into the complexity of crosskingdom interactions and improve the understanding of microbiome assembly in the rhizosphere and roots.

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“…Using biomass quantification as an indicator of fungal inoculation performance, we found that fungi mainly promoted the root biomass, but did not influence the shoot biomass, which may be related to the fungi-mediated morphological growth of roots (Li et al, 2019a ; Jabborova et al, 2021 ; Toppo et al, 2022 ). In this study, inoculation of all fungi alone decreased the plant height of A. adsurgens seedlings, but significantly increased the total root length and root surface area.…”

Section: Discussionmentioning

confidence: 99%

Species identity and combinations differ in their overall benefits to Astragalus adsurgens plants inoculated with single or multiple endophytic fungi under drought conditions

Zuo

Qin

et al. 2022

Front. Plant Sci.

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Although desert plants often establish multiple simultaneous symbiotic associations with various endophytic fungi in their roots, most studies focus on single fungus inoculation. Therefore, combined inoculation of multiple fungi should be applied to simulate natural habitats with the presence of a local microbiome. Here, a pot experiment was conducted to test the synergistic effects between three extremely arid habitat-adapted root endophytes (Alternaria chlamydospora, Sarocladium kiliense, and Monosporascus sp.). For that, we compared the effects of single fungus vs. combined fungi inoculation, on plant morphology and rhizospheric soil microhabitat of desert plant Astragalus adsurgens grown under drought and non-sterile soil conditions. The results indicated that fungal inoculation mainly influenced root biomass of A. adsurgens, but did not affect the shoot biomass. Both single fungus and combined inoculation decreased plant height (7–17%), but increased stem branching numbers (13–34%). However, fungal inoculation influenced the root length and surface area depending on their species and combinations, with the greatest benefits occurring on S. kiliense inoculation alone and its co-inoculation with Monosporascus sp. (109% and 61%; 54% and 42%). Although A. chlamydospora and co-inoculations with S. kiliense and Monosporascus sp. also appeared to promote root growth, these inoculations resulted in obvious soil acidification. Despite no observed root growth promotion, Monosporascus sp. associated with its combined inoculations maximally facilitated soil organic carbon accumulation. However, noticeably, combined inoculation of the three species had no significant effects on root length, surface area, and biomass, but promoted rhizospheric fungal diversity and abundance most, with Sordariomycetes being the dominant fungal group. This indicates the response of plant growth to fungal inoculation may be different from that of the rhizospheric fungal community. Structural equation modeling also demonstrated that fungal inoculation significantly influenced the interactions among the growth of A. adsurgens, soil factors, and rhizospheric fungal groups. Our findings suggest that, based on species-specific and combinatorial effects, endophytic fungi enhanced the plant root growth, altered soil nutrients, and facilitated rhizospheric fungal community, possibly contributing to desert plant performance and ecological adaptability. These results will provide the basis for evaluating the potential application of fungal inoculants for developing sustainable management for desert ecosystems.

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Elucidating the Strategies for Isolation of Endophytic Fungi and Their Functional Attributes for the Regulation of Plant Growth and Resilience to Stress

Cited by 11 publications

References 149 publications

Fungal community remediate quartz tailings soil under plant combined with urban sludge treatments

Fungal community remediate quartz tailings soil under plant combined with urban sludge treatments

The rhizosphere and root selections intensify fungi-bacteria interaction in abiotic stress-resistant plants

Species identity and combinations differ in their overall benefits to Astragalus adsurgens plants inoculated with single or multiple endophytic fungi under drought conditions

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