[Community Composition, Symbiotic Patterns, and Influencing Factors of Planktonic Fungi in Urban Lakes of Nanchang]

Yi Huang; Peng Wang; Ming-Jun Ding; Gao-Xiang Huang; Hua Zhang; Ming-Hua Nie; Peng-Fei Gao; Shen Ye

doi:10.13227/j.hjkx.202210191

[Community Composition, Symbiotic Patterns, and Influencing Factors of Planktonic Fungi in Urban Lakes of Nanchang]

Huan Jing Ke Xue. 2023 Oct 8;44(10):5556-5566. doi: 10.13227/j.hjkx.202210191.

[Article in Chinese]

Authors

Yi Huang^{1

2}, Peng Wang^{1

2}, Ming-Jun Ding^{1

2}, Gao-Xiang Huang^{1

2}, Hua Zhang^{1

2}, Ming-Hua Nie^{1

2}, Peng-Fei Gao^{1

2}, Shen Ye^{1

2}

Affiliations

¹ School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, China.
² Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, China.

PMID: 37827772
DOI: 10.13227/j.hjkx.202210191

Abstract

To investigate the characteristics of planktonic fungal communities in Nanchang lakes and the mechanism of environmental stress on planktonic fungal communities, surface water samples were collected from seven major urban lakes evenly distributed in different county-level districts of Nanchang in the dry (February and December), normal (April and October), and wet (June and August) seasons, respectively. The environmental stressors such as WT, DO, NH₄⁺-N, and NO₃^--N were measured; the characteristics of planktonic fungal communities were studied using high-throughput sequencing; the symbiotic patterns of planktonic fungal communities were elucidated using network analysis and other methods; and the environmental stressors affecting the structure and symbiotic patterns of planktonic fungal communities were revealed. The results showed that ① the planktonic fungal community composition in lakes of Nanchang varied significantly among seasons but not significantly among the lakes. WT, DO, pH, and NH₄⁺-N were the significant environmental stressors affecting the planktonic fungal community composition. ② The dominant phyla of the planktonic fungal community were Chytridiomycota (9.55%-33.14%), Basidiomycota (0.48%-4.25%), and Ascomycota (1.29%-3.19%), and the sizes of the dominant phyla were in the following order:wet season>normal season>dry season. The relative abundance of Chytridiomycota was significantly higher in the wet season than that in the normal season and the dry season, the relative abundance of Basidiomycota was significantly lower in the dry season than that in the normal and wet seasons, and the difference in Ascomycota among seasons was not significant. ③ The stability size of the planktonic fungal community symbiosis network in lakes of Nanchang was in the following order:wet season>normal season>dry season. WT was the best environmental stressor affecting the planktonic fungal community symbiosis pattern. The study can provide theoretical basis for the comprehensive evaluation and management study of the lake and provide guidance for protecting the lake ecosystem in the middle and lower reaches of the Yangtze River.

Keywords: composition and diversity; environmental stresses; lakes of Nanchang; planktonic fungal communities; symbiotic patterns.

Publication types

English Abstract

MeSH terms

China
Ecosystem
Fungi
Lakes* / microbiology
Plankton*
Seasons
Symbiosis