The local environment determines the assembly of root endophytic fungi at a continental scale

Glynou, Kyriaki; Ali, Tahir; Buch, Ann-Katrin; Kia, Sevda Haghi; Ploch, Sebastián; Xia, Xiaojuan; Çelik, Ali; Thines, Marco; Maciá‐Vicente, Jose G.

doi:10.1111/1462-2920.13112

Cited by 120 publications

(155 citation statements)

References 89 publications

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“…oxysporum colonizes only plants from places that are free from contamination with heavy metals [29,45,73,80,81]. Our results confirm this observation, since isolates of F .…”

Section: Discussionsupporting

confidence: 83%

Endophytic fungal communities of Polygonum acuminatum and Aeschynomene fluminensis are influenced by soil mercury contamination

et al. 2017

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The endophytic fungal communities of Polygonum acuminatum and Aeschynomene fluminensis were examined with respect to soil mercury (Hg) contamination. Plants were collected in places with and without Hg +2 for isolation and identification of their endophytic root fungi. We evaluated frequency of colonization, number of isolates and richness, indices of diversity and similarity, functional traits (hydrolytic enzymes, siderophores, indoleacetic acid, antibiosis and metal tolerance) and growth promotion of Aeschynomene fluminensis inoculated with endophytic fungi on soil with mercury. The frequency of colonization, structure and community function, as well as the abundant distribution of taxa of endophytic fungi were influenced by mercury contamination, with higher endophytic fungi in hosts in soil with mercury. The presence or absence of mercury in the soil changes the profile of the functional characteristics of the endophytic fungal community. On the other hand, tolerance of lineages to multiple metals is not associated with contamination. A. fluminensis depends on its endophytic fungi, since plants free of endophytic fungi grew less than expected due to mercury toxicity. In contrast plants containing certain endophytic fungi showed good growth in soil containing mercury, even exceeding growth of plants cultivated in soil without mercury. The data obtained confirm the hypothesis that soil contamination by mercury alters community structure of root endophytic fungi in terms of composition, abundance and species richness. The inoculation of A. fluminensis with certain strains of stress tolerant endophytic fungi contribute to colonization and establishment of the host and may be used in processes that aim to improve phytoremediation of soils with toxic concentrations of mercury.

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“…oxysporum colonizes only plants from places that are free from contamination with heavy metals [29,45,73,80,81]. Our results confirm this observation, since isolates of F .…”

Section: Discussionsupporting

confidence: 83%

Endophytic fungal communities of Polygonum acuminatum and Aeschynomene fluminensis are influenced by soil mercury contamination

et al. 2017

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“…For example, Chytridiomycota favor high-altitude environments and display high abundance and diversity in highelevation soils (Freeman et al 2009). The important influence of stochastic processes via the random immigration of local microbes on the microbial community structure in activated sludge systems has been documented by multiple studies (Glynou et al 2015;Lee et al 2015). Corresponding to the altitudinal distance decay pattern, the fungal community evenness at high altitudes was almost two times that at low altitudes ( Table 2).…”

Section: Resultsmentioning

confidence: 88%

Ignored fungal community in activated sludge wastewater treatment plants: diversity and altitudinal characteristics

Niu

Xu³

et al. 2016

Environ Sci Pollut Res

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Fungi are important contributors to the various functions of activated sludge wastewater treatment plants (WWTPs); however, the diversity and geographic characteristics of fungal populations have remained vastly unexplored. Here, quantitative polymerase chain reaction and 454 pyrosequencing were combined to investigate the abundance and diversity of the activated sludge fungal communities from 18 full-scale municipal WWTPs in China. Phylogenetic taxonomy revealed that the members of the fungal communities were assigned to 7 phyla and 195 genera. Ascomycota and Basidiomycota were the most abundant phyla, dominated by Pluteus, Wickerhamiella, and Penicillium. Twenty-three fungal genera, accounting for 50.1 % of the total reads, were shared by 18 WWTPs and constituted a core fungal community. The fungal communities presented similar community diversity but different community structures across the WWTPs. Significant distance decay relationships were observed for the dissimilarity in fungal community structure and altitudinal distance between WWTPs. Additionally, the community evenness increased from 0.25 to 0.7 as the altitude increased. Dissolved oxygen and the C/N ratio were determined to be the most dominant contributors to the variation in fungal community structure via redundancy analysis. The observed data demonstrated the diverse occurrence of fungal species and gave a marked view of fungal community characteristics based on the previously unexplored fungal communities in activated sludge WWTPs.

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“…(). The surface‐sterilization procedure eliminated rhizoplane fungi in > 98% of the samples (Glynou et al ., ). The remaining root material was stored at −78°C until processing for DNA extraction.…”

Section: Methodsmentioning

confidence: 99%

Facultative root‐colonizing fungi dominate endophytic assemblages in roots of nonmycorrhizal Microthlaspi species

et al. 2017

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There is increasing knowledge on the diversity of root-endophytic fungi, but limited information on their lifestyles and dependence on hosts hampers our understanding of their ecological functions. We compared diversity and biogeographical patterns of cultivable and noncultivable root endophytes to assess whether their occurrence is determined by distinct ecological factors. The endophytic diversity in roots of nonmycorrhizal Microthlaspi spp. growing across Europe was assessed using high-throughput sequencing (HTS) and compared with a previous dataset based on cultivation of endophytes from the same root samples. HTS revealed a large fungal richness undetected by cultivation, but which largely comprised taxa with restricted distributions and/or low representation of sequence reads. Both datasets coincided in a consistent high representation of widespread endophytes within orders Pleosporales, Hypocreales and Helotiales, as well as similar associations of community structure with spatial and environmental conditions. Likewise, distributions of particular endophytes inferred by HTS agreed with cultivation data in suggesting individual ecological preferences. Our findings support that Microthlaspi spp. roots are colonized mostly by saprotrophic and likely facultative endophytes, and that differential niche preferences and distribution ranges among fungi importantly drive the assembly of root-endophytic communities.

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The local environment determines the assembly of root endophytic fungi at a continental scale

Cited by 120 publications

References 89 publications

Endophytic fungal communities of Polygonum acuminatum and Aeschynomene fluminensis are influenced by soil mercury contamination

Endophytic fungal communities of Polygonum acuminatum and Aeschynomene fluminensis are influenced by soil mercury contamination

Ignored fungal community in activated sludge wastewater treatment plants: diversity and altitudinal characteristics

Facultative root‐colonizing fungi dominate endophytic assemblages in roots of nonmycorrhizal Microthlaspi species

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