Abstract
Revealing planktonic fungal ecology under coastal eutrophication is crucial to our understanding of microbial community shift in marine pollution background. We investigated the diversity, putative interspecies interactions, assembly processes and environmental responses of abundant and rare planktonic fungal communities along a eutrophication gradient present in the Beibu Gulf. The results showed that Dothideomycetes and Agaricomycetes were the predominant classes of abundant and rare fungi, respectively. We found that eutrophication significantly altered the planktonic fungal communities and affected the abundant taxa more than the rare taxa. The abundant and rare taxa were keystone members in the co-occurrence networks, and their interaction was enhanced with increasing nutrient concentrations. Stochastic processes dominated the community assembly of both abundant and rare planktonic fungi across the eutrophication gradient. Heterogeneous selection affected abundant taxa more than rare taxa, whereas homogenizing dispersal had a greater influence on rare taxa. Influences of environmental factors involving selection processes were detected, we found that abundant fungi were mainly influenced by carbon compounds, whereas rare taxa were simultaneously affected by carbon, nitrogen and phosphorus compounds in the Beibu Gulf. Overall, these findings highlight the distinct ecological adaptations of abundant and rare fungal communities to marine eutrophication.
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Data Availability
All sequence data were deposited in GenBank under BioProject Accession: PRJNA658447 (SAMN15871586-SAMN15871740).
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Funding
This research was financially supported by the National Natural Science Foundation of China no. 41966005, U20A2087; Guangxi Natural Science Foundation no. 2018GXNSFDA281006, 2017GXNSFBA198009; the ‘One Hundred Talents’ Project of Guangxi (grant no. 6020303891251); the Open Research Fund Program of Key Laboratory of Marine Ecosystem Dynamics, MNR (grant no. MED202014); the Foundation of Guangxi Academy of Sciences no. 2017YJ23003; Basic scientific research capacity improvement project of young and middle-aged teachers in colleges and universities, Guangxi no. 2021KY0391; Research on quantitative remote sensing technology for tropical vegetation and International Joint Laboratory of Ecological & Remote Sensing (AD20238059).
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HZ: Conceptualization, methodology, writing — review and editing and supervision. FQB: Review and editing and supervision. LH: Writing — review and editing and supervision. JT: Formal analysis and visualization. QX: Writing — review and editing. XL: Writing — review and editing. YH: Review and editing. SZ: Data curation. XC: Investigation, visualization and supervision (statistics). WH: Conceptualization and methodology. LP: Formal analysis, writing — review and editing and supervision. KD: Conceptualization and supervision. GJ: Conceptualization and writing — review and editing. NL: Conceptualization, methodology, formal analysis, investigation, data curation, writing — original draft, visualization and writing — review and editing.
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Zhao, H., Brearley, F.Q., Huang, L. et al. Abundant and Rare Taxa of Planktonic Fungal Community Exhibit Distinct Assembly Patterns Along Coastal Eutrophication Gradient. Microb Ecol 85, 495–507 (2023). https://doi.org/10.1007/s00248-022-01976-z
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DOI: https://doi.org/10.1007/s00248-022-01976-z