Dark septate endophytes improve the growth of host and non-host plants under drought stress through altered root development

Li, Xia; He, Chunguang; He, Xueli; Su, Fang; Hou, Lifeng; Ren, Ying; Hou, Yiting

doi:10.1007/s11104-019-04057-2

Cited by 71 publications

(64 citation statements)

References 69 publications

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“…Our results also showed that DSE had significant and direct effects on plant biomass, whereas the combination of DSE and water did not significantly influence plant biomass. This is consistent with the findings of previous studies, which showed that the interactions of DSE with plants might be affected by the DSE species (Mandyam and Jumpponen, 2005; Li X. et al, 2019).…”

Section: Discussionsupporting

confidence: 93%

“…Specifically, AV and FA increased glycyrrhizic acid content, whereas AV and PP increased glycyrrhizin content under drought stress. These findings suggested that the presence of endophytic fungi reduces the adverse effects of individual and combined stresses on plant growth and active ingredients accumulation (Xie et al, 2018; Li X. et al, 2019).…”

Section: Discussionmentioning

confidence: 96%

“…Two possible reasons can explain the effects of inoculating DSE in soil nutrient properties. First, DSE inoculation improved the root system and N and P absorption by plants, which consequently led to the depletion of these common nutrients in the soil (Vergara et al, 2017; Li X. et al, 2019). Second, DSE could act as decomposers and convert soil organic nutrients into available forms to promote the growth and tolerance of plants to stressful conditions (Surono and Narisawa, 2017; He et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…DSE are characterized by their dark septate hyphae and melanized microsclerotia (Mandyam and Jumpponen, 2005; Xie et al, 2017). Related reports have indicated that the interactions between DSE and host plants vary from negative to neutral and positive (Newsham, 2011; Li X. et al, 2019). The use of DSE fungi as promoters can enhance plant growth by improving the mineral element uptake (Surono and Narisawa, 2017; Li et al, 2018; He et al, 2019), as well as by preventing the development of biotic and abiotic resistance in hosts (Surono and Narisawa, 2017; Li et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Plant Growth and Soil Microbial Impacts of Enhancing Licorice With Inoculating Dark Septate Endophytes Under Drought Stress

Wang

Hou

2019

Front. Microbiol.

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This study mainly aimed to investigate the effects of dark septate endophytes (DSE) (Acrocalymma vagum, Paraboeremia putaminum, and Fusarium acuminatum) on the growth and microbial community composition in the rhizosphere soil of a medicinal plant, licorice (Glycyrrhiza uralensis), grown in the non-sterile soil under drought stress. The results showed that three DSE strains could effectively colonize the plant roots and form a strain-dependent symbiosis with licorice. Although drought stress declined the growth of licorice plants, these decreases were partly recovered by DSE inoculation. Specifically, the inoculation of A. vagum and P. putaminum significantly increased the biomass and glycyrrhizin content, whereas A. vagum and F. acuminatum increased glycyrrhizic acid content of host plants under drought stress. However, the inoculation of F. acuminatum showed significant negative effects on the shoot, root, and total biomass of licorice plants. In addition, the effects of DSE inoculation on the morphological, photosynthetic, and antioxidant parameters of licorice plants, and mineral nutrient and microbial community composition in the rhizosphere soil were dependent on the DSE species as well as water regime. Interestingly, DSE inoculation significantly increased AM fungi content under drought stress. In addition, DSE associated with water had a significant positive influence on soil organic matter, available phosphorus (P), AM fungi, leaf number, soluble protein, SOD activity, total root length, root branch, and glycyrrhizic acid content. Based on the results of variance partitioning analysis, 17.0, 34.0, 14.9, 40.1, 28.2, and 18.0% variations in shoot morphology, root morphology, plant biomass, active ingredient, photosynthetic parameters, and antioxidant parameters, respectively, were attributable to the presence of certain soil microorganisms. These findings suggest the possibility that DSE inoculation improved the root development and nutrient absorption of host plants, altered the soil microbiota, and might also contribute to plant growth and survival under drought conditions. As A. vagum exhibited positive effects on the plant biomass, morphological and physiological parameters, and active ingredient content in licorice plants under drought stress, it was considered to be the best fungus for licorice cultivation. These results contribute to the understanding of the ecological function of DSE fungi in dryland agriculture.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Plant Growth and Soil Microbial Impacts of Enhancing Licorice With Inoculating Dark Septate Endophytes Under Drought Stress

Wang

Hou

2019

Front. Microbiol.

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“…This study unravelled the important role of AM symbiosis in regulating secondary metabolite biosynthesis. The paper of Li et al (2019a) examined the role of dark septate endophytes (DSE) in promoting plant growth under drought stress. This study sheds light on the potential application of the tested DSE isolated from desert Hedysarum scoparium for agricultural and medicinal plants.…”

Section: Interactions With Rhizosphere Symbiotic Microbiomementioning

confidence: 99%

Crop root systems and rhizosphere interactions

Chen

Palta

et al. 2019

Plant Soil

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Mycobiome detection from a single subterranean gametophyte using metabarcoding techniques

et al. 2022

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Premise Several ferns and lycophytes produce subterranean gametophytes, including the Ophioglossaceae, Psilotaceae, and some members of the Schizaeaceae, Gleicheniaceae, and Lycopodiaceae. Despite the surge in plant‐microbiome research, which has been particularly boosted by high‐throughput sequencing techniques, the microbiomes of these inconspicuous fern gametophytes have rarely been examined. The subterranean gametophytes are peculiar due to their achlorophyllous nature, which makes them rely on fungi to obtain nutrients. Furthermore, the factors that shape the fungal communities (mycobiomes) of fern gametophytes have not been examined in depth. Methods and Results We present a workflow to study the mycobiome of the achlorophyllous gametophytes of Ophioderma pendulum using a high‐throughput metabarcoding approach. Simultaneously, each gametophyte was investigated microscopically to detect fungal structures. Two primer sets of the nuclear ITS sequence targeting general fungi were applied, in addition to a primer set that specifically targets the nuclear small subunit ribosomal rDNA region of arbuscular mycorrhizal fungi. Both the microscopic and metabarcoding approaches revealed many diverse fungi inhabiting a single gametophyte of O . pendulum . Discussion This study provides methodological details and discusses precautions for the mycobiome investigation of achlorophyllous gametophytes. This research is also the first to uncover the mycobiome assembly of an achlorophyllous gametophyte of an epiphytic fern.

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Dark septate endophytes improve the growth of host and non-host plants under drought stress through altered root development

Cited by 71 publications

References 69 publications

Plant Growth and Soil Microbial Impacts of Enhancing Licorice With Inoculating Dark Septate Endophytes Under Drought Stress

Plant Growth and Soil Microbial Impacts of Enhancing Licorice With Inoculating Dark Septate Endophytes Under Drought Stress

Crop root systems and rhizosphere interactions

Mycobiome detection from a single subterranean gametophyte using metabarcoding techniques

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