scholarly journals Fungal community structure and function shifts with atmospheric nitrogen deposition

2020 ◽  
Author(s):  
Jessica A. M. Moore ◽  
Mark A. Anthony ◽  
Gregory J. Pec ◽  
Lidia K. Trocha ◽  
Artur Trzebny ◽  
...  
Keyword(s):  
Community Structure ◽  
Nitrogen Deposition ◽  
Fungal Community ◽  
Structure And Function ◽  
Atmospheric Nitrogen Deposition ◽  
Atmospheric Nitrogen ◽  
Fungal Community Structure ◽  
And Function

scholarly journals Effects of long-term integrated agri-aquaculture on the soil fungal community structure and function in vegetable fields

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xianqing Zheng ◽  
Ke Song ◽  
Shuangxi Li ◽  
Hanlin Zhang ◽  
Naling Bai ◽  
...  
Keyword(s):  
Community Structure ◽  
Fungal Community ◽  
Soil Fungi ◽  
Structure And Function ◽  
Dominant Factor ◽  
Fungal Community Structure ◽  
Vegetable Field ◽  
Soil Fungal Community ◽  
Field Systems ◽  
And Function

AbstractThe diversity and community structure of soil fungi play an important role in crop production and ecosystem balance, especially in paddy-upland vegetable field systems. High-throughput sequencing was used to study changes in the soil fungal community structure and function in paddy-upland vegetable field systems. The results showed that compared with traditional planting, the diversity and community structure of soil fungi were changed by the combination of flooding and drought, the Shannon index increased by 11.07%, and the proportion of the dominant species, Mortierella, decreased by 22.74%. Soil available nitrogen, total phosphorus, available phosphorus, total nitrogen and organic matter played a leading role in the initial stage of the experiment, while the dominant factor changed to total potassium 3 years later and then to soil pH and water content 6 years later. FUNGuild analysis showed that the proportion of three independent trophic modes of soil fungi were increased by the combined flooded-drought model, and there were multiple interaction factors, For example, nutrient supply, pH and planting pattern. This study showed that soil fertility, crop yield and economic benefits were better than the traditional model after three years of planting and breeding. The longer the time, the better the effect.

scholarly journals Changes in soil bacterial and fungal communities in response to Bacillus megaterium NCT-2 inoculation in secondary salinized soil

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e12309
Author(s):  
Bin Wang ◽  
Shaohua Chu ◽  
Xiaorui Liu ◽  
Dan Zhang ◽  
Xiaotong Chai ◽  
...  
Keyword(s):  
Community Structure ◽  
Soil Remediation ◽  
Bacillus Megaterium ◽  
Fungal Community ◽  
Soil Microbial Communities ◽  
Structure And Function ◽  
Nitrate Content ◽  
Fungal Community Structure ◽  
And Function ◽  
Salinized Soil

Background Secondary salinized soil in greenhouses often contains excess nitrate. Inoculation of Bacillus megaterium NCT-2 with nitrate assimilation ability represents an attractive approach for soil remediation. However, the effects of NCT-2 on the structure and function of soil microbial communities have not been explored. Methods Greenhouse experiments were carried out to investigate changes in soil properties, Brassica chinensis L. growth, bacterial, and fungal community structure and function in response to NCT-2 inoculation. Results The NCT-2 inoculant significantly reduced the nitrate content in B. chinensis and inhibited the rebound of soil nitrate in the later stage. The shifts of bacterial community structure and function by NCT-2 was negligible, and a greater disturbance of soil fungal community structure and function was observed, for example the strong inhibitory effect on ectomycorrhizal fungi. These results indicated that the NCT-2 inoculant likely achieved the remediation effect in secondary salinized soil by shifting fungal community. The present findings add to the current understanding of microbial interactions in response to bacterial inoculation and can be of great significance for the application of NCT-2 inoculants in secondary salinized soil remediation.

Warming and disturbance alter soil microbiome diversity and function in a northern forest ecotone

2020 ◽  
Vol 96 (7) ◽  
Author(s):  
Michael E Van Nuland ◽  
Dylan P Smith ◽  
Jennifer M Bhatnagar ◽  
Artur Stefanski ◽  
Sarah E Hobbie ◽  
...  
Keyword(s):  
Community Structure ◽  
Fungal Community ◽  
Fungal Communities ◽  
Soil Microbiome ◽  
Northern Forest ◽  
Fungal Community Structure ◽  
Open Canopy ◽  
Ground Warming ◽  
And Function ◽  
Forest Ecotone

ABSTRACT The response to global change by soil microbes is set to affect important ecosystem processes. These impacts could be most immediate in transitional zones, such as the temperate-boreal forest ecotone, yet previous work in these forests has primarily focused on specific subsets of microbial taxa. Here, we examined how bacterial and fungal communities respond to simulated above- and below-ground warming under realistic field conditions in closed and open canopy treatments in Minnesota, USA. Our results show that warming and canopy disturbance shifted bacterial and fungal community structure as dominant bacterial and fungal groups differed in the direction and intensity of their responses. Ectomycorrhizal and saprotrophic fungal communities with greater connectivity (higher prevalence of strongly interconnected taxa based on pairwise co-occurrence relationships) were more resistant to compositional change. Warming effects on soil enzymes involved in the hydrolytic and oxidative liberation of carbon from plant cell walls and nutrients from organic matter were most strongly linked to fungal community responses, although community structure–function relationships differed between fungal guilds. Collectively, these findings indicate that warming and disturbance will influence the composition and function of microbial communities in the temperate-boreal ecotone, and fungal responses are particularly important to understand for predicting future ecosystem functioning.

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