Distribution patterns of endophytic fungi in different intertidal plant communities within a tropical mangrove forest in South China

Zeng, Kai; Guo, Jianhua; Huang, Xiaochen; He, Chuntao; Guo, Junjie; Chen, Hao; Wang, Yutao; Xin, Guorong

doi:10.1016/j.rhisph.2023.100829

Cited by 3 publications

(2 citation statements)

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“…Non-AMF taxa from the Pleosporales, Heliotales (Ascomycota), and Tremellales (Basidiomycota) orders were especially predominant in populations with low presence of Glomeromycota ( Supplementary Figure S4 ). Although these orders contain taxa that have been recognized as endophytes ( Rungjindamai and Jones, 2024 ; Zeng et al., 2024 ), their functionality regarding ferns remains unknown. Dark septate endophytes (DSE) in particular are frequent intracellular root associates with plants and they have been commonly observed in fern roots ( Kessler et al., 2010 ; Lehnert et al., 2017 ).…”

Section: Discussionmentioning

confidence: 99%

“…Most of them have been classified as members of Heliotales and Pleosporales ( Jumpponen, 2001 ; He et al., 2019 ; Malicka et al., 2022 ). It has been speculated that DSE may act as mycorrhizal partners in situations where AMF are absent ( Kessler et al., 2010 ; Lehnert et al., 2017 ; He et al., 2019 ), even though some authors have found a positive correlation between the abundances of AMF and DSE, suggesting a diversification in functions ( Malicka et al., 2022 ; Zeng et al., 2024 ).…”

Section: Discussionmentioning

confidence: 99%

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Comparative analysis of mycorrhizal communities associated with Struthiopteris spicant (L.) Weiss across Europe and North America

Guillen-Otero,

Hertel,

Quintanilla

et al. 2024

Front. Plant Sci.

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IntroductionFerns constitute the second largest group of vascular plants. Previous studies have shown that the diversity and composition of fern communities are influenced by resource availability and water stress, among other factors. However, little is known about the influence of these environmental factors on their biotic interactions, especially regarding the relationship between mycorrhizal fungi and ferns. The present study compares the mycorrhizal communities associated with 36 populations of Struthiopteris spicant L. Weiss across Europe and North America. This species exhibits a great tolerance to variations in light, nutrient, and pH conditions, and it can survive with and without mycorrhizae.MethodsWith the aim of determining which environmental factors impact the composition and abundance of the root-associated fungal communities in this species, we used an ITS-focused metabarcoding approach to identify the mycorrhizal fungi present and analyzed the influence of climatic and edaphic variables at global and regional scalesResults and discussionWe encountered striking differences in the relative abundance of arbuscular mycorrhizal fungi (AMF) between S. spicant populations at both spatial levels. We recorded a total of 902 fungal ASVs, but only 2– 4% of the total fungal diversity was observed in each individual, revealing that each fern had a unique fungal community. Light availability and the interactive action of pH and soil nitrogen concentration showed a positive influence on AMF relative abundance, explaining 89% of the variance. However, environmental factors could only explain 4– 8% of the variability in AMF community composition, indicating that it might be determined by stochastic processes. These results support the hypothesis that ferns may be more independent of mycorrhization than other plant groups and interact with fungi in a more opportunistic manner.

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