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Response of Soil Fungi Community Structure to Salt Vegetation Succession in the Yellow River Delta

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Abstract

High-throughput sequencing technology was used to reveal the composition and distribution of fungal community structure in the Yellow River Delta under bare land and four kinds of halophyte vegetation (saline seepweed, Angiospermae, Imperata and Apocynum venetum [A. venetum]). The results showed that the soil quality continuously improved with the succession of salt vegetation types. The soil fungi richness of mild-salt communities (Imperata and A. venetum) was relatively higher, with Shannon index values of 5.21 and 5.84, respectively. The soil fungi richness of severe-salt-tolerant communities (saline seepweed, Angiospermae) was relatively lower, with Shannon index values of 4.64 and 4.66, respectively. The UniFrac metric values ranged from 0.48 to 0.67 when the vegetation was in different succession stages. A total of 60,174 valid sequences were obtained for the five vegetation types, and they were classified into Ascomycota, Basidiomycota, Chytridiomycota, Glomeromycota and Mucoromycotina. Ascomycota had the greatest advantage among plant communities of Imperata and A. venetum, as indicated by relative abundances of 2.69 and 69.97 %, respectively. Basidiomycota had the greatest advantage among mild-salt communities of saline seepweed and Angiospermae, with relative abundances of 9.43 and 6.64 %, respectively. Soil physical and chemical properties were correlated with the distribution of the fungi, and Mucor was significantly correlated with soil moisture (r = 0.985; P < 0.01). Soil quality, salt vegetation and soil fungi were influenced by each other.

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Acknowledgments

This work was supported by the Natural Science Foundation of Shandong Province under Grant (No. ZR2012DM013), Promotional research fund for excellent young and middle-aged scientisits of Shandong Province (No. BS2014HZ019) and A Project of Shandong Province Higher Educational Science and Technology Program (No. J15LE07).

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Correspondence to Du-fa Guo.

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Yan-yun Wang and Du-fa Guo have contributed equally.

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Wang, Yy., Guo, Df. Response of Soil Fungi Community Structure to Salt Vegetation Succession in the Yellow River Delta. Curr Microbiol 73, 595–601 (2016). https://doi.org/10.1007/s00284-016-1099-4

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