Temporal and spatial variation of arbuscular mycorrhizal fungi under the canopy of Hedysarum scoparium in the northern desert, China

Qiang, Wei; He, Xueli; Wang, Jiaojiao; Zhao, Lili

doi:10.1016/j.apsoil.2019.01.003

Cited by 23 publications

(7 citation statements)

References 39 publications

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“…The OTUs were assigned to the genera Funneliformis and Diversispora. These genera have been found in high abundance in arid and saline soils and recently in the rhizosphere of Larrea tridentata, a perennial plant of Chihuahuan Desert [61] and in Hedysarum scoparium in desert areas of northern China [62]. Arbuscular mycorrhizal symbiosis directly influences the uptake and transfer of water through the hyphae of the fungus [63,64], and also improve the osmoregulation mechanisms in the host plant to tolerate drought and salt stress, thus increasing compatible osmolytes, such as proline, betaine, polyamines, sugars, organic acids, amino acids, and trehalose [65,66].…”

Section: Discussionmentioning

confidence: 99%

Fungal and Bacterial Microbiome Associated with the Rhizosphere of Native Plants from the Atacama Desert

et al. 2020

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The rhizosphere microbiome is key in survival, development, and stress tolerance in plants. Salinity, drought, and extreme temperatures are frequent events in the Atacama Desert, considered the driest in the world. However, little information of the rhizosphere microbiome and its possible contribution to the adaptation and tolerance of plants that inhabit the desert is available. We used a high-throughput Illumina MiSeq sequencing approach to explore the composition, diversity, and functions of fungal and bacterial communities of the rhizosphere of Baccharis scandens and Solanum chilense native plants from the Atacama Desert. Our results showed that the fungal phyla Ascomycota and Basidiomycota and the bacterial phyla Actinobacteria and Proteobacteria were the dominant taxa in the rhizosphere of both plants. The linear discriminant analysis (LDA) effect size (LefSe) of the rhizosphere communities associated with B. scandens showed the genera Penicillium and Arthrobacter were the preferential taxa, whereas the genera Oidiodendron and Nitrospirae was the preferential taxa in S. chilense. Both plant showed similar diversity, richness, and abundance according to Shannon index, observed OTUs, and evenness. Our results indicate that there are no significant differences (p = 0.1) between the fungal and bacterial communities of both plants, however through LefSe, we find taxa associated with each plant species and the PCoA shows a separation between the samples of each species. This study provides knowledge to relate the assembly of the microbiome to the adaptability to drought stress in desert plants.

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Section: Discussionmentioning

confidence: 99%

Fungal and Bacterial Microbiome Associated with the Rhizosphere of Native Plants from the Atacama Desert

et al. 2020

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“…Our previous investigations predominately focused on the spatial patterns of root-associated fungi, such as the arbuscular mycorrhizal fungi and dark septate endophytes that are symbiotic with ecologically important plants in arid desert [ 42 , 43 , 44 , 45 , 46 ]. In the present study, we examined the endophytic fungal microbiome and co-occurrence network across the root, stem, and leaf compartment niches associated with five endemic shrubs in an extremely arid desert, Northwest China.…”

Section: Introductionmentioning

confidence: 99%

Fungal Endophytic Community and Diversity Associated with Desert Shrubs Driven by Plant Identity and Organ Differentiation in Extremely Arid Desert Ecosystem

Zuo

Xia

Yang

et al. 2021

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Despite desert ecosystem being crucial to our understanding of natural geography, species evolution and global climate change, there is limited information on the dynamics of their composition and the diversity of endophytic fungi communities driven by plant identity and organ differentiation. Here, an extensive investigation of endophytic fungal microbiome in root, stem, and leaf organs associated with five xerophyte shrubs in an extremely arid desert, Northwest China, were examined. The fungal community dominated by Dothideomycetes and Pleosporales. Shrub species strongly drive the niche-based processes of endophytic fungi across the root, stem and leaf compartments. The diversity and composition of endophytic fungi in stem showed higher variability among plant species than leaf and root. The fungal communities in root libraries were more diverse and exhibited a remarkable differentiation of community composition. We further demonstrated the significant host preferences and tissue specificity of desert endophytic fungi, and unique specific taxa were also observed. The co-occurrence network revealed the coexistence of fungal endophytes in arid desert, and the root fungal network harbored the highest interspecies connectivity. Members of Pleosporales were the most common keystone species in the root fungal network. This is the first report of mycobiota in both plant species and organ differentiation in an extremely arid desert ecosystem.

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“…Several studies have shown that the adaptation of plant to stress habits is closely associated with the presence of soil microorganisms (Lata et al, 2018). For instance, the colonization of fungal endophytes is attributable to the tolerance of plants to high temperature, salt, and drought resistance (Rodriguez et al, 2008; Qiang et al, 2019). Concurrently, these associated fungal endophytes, including dark septate endophytes (DSE), have been shown to enhance plant productivity and health, and are therefore particularly beneficial for sustainable agriculture development (Aroca et al, 2008; Zhang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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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Temporal and spatial variation of arbuscular mycorrhizal fungi under the canopy of Hedysarum scoparium in the northern desert, China

Cited by 23 publications

References 39 publications

Fungal and Bacterial Microbiome Associated with the Rhizosphere of Native Plants from the Atacama Desert

Fungal and Bacterial Microbiome Associated with the Rhizosphere of Native Plants from the Atacama Desert

Fungal Endophytic Community and Diversity Associated with Desert Shrubs Driven by Plant Identity and Organ Differentiation in Extremely Arid Desert Ecosystem

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

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