Spatio-temporal microbial community dynamics within soil aggregates

Upton, Racheal N.; Bach, Elizabeth M.; Hofmockel, Kirsten

doi:10.1016/j.soilbio.2019.01.016

Cited by 117 publications

(39 citation statements)

References 86 publications

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“…In building ABMs, aggregate separation techniques and even artificial aggregates have played and will continue to play a pivotal role in gaining theoretical understanding of aggregate reactors and their size‐dependent relationships with various factors (e.g. Upton, Bach, & Hofmockel, ; Path 1 in Figure ). Aggregate‐based approaches can offer an advantage of measurability relative to current soil carbon models such as CENTURY for which the simulated carbon pools cannot be measured directly (Parton, ).…”

mentioning

confidence: 99%

Building bottom‐up aggregate‐based models (ABMs) in soil systems with a view of aggregates as biogeochemical reactors

Wang

Brewer

Shugart

et al. 2019

Global Change Biology

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mentioning

confidence: 99%

Building bottom‐up aggregate‐based models (ABMs) in soil systems with a view of aggregates as biogeochemical reactors

Wang

Brewer

Shugart

et al. 2019

Global Change Biology

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“…Additionally, these management strategies may also influence intra-seasonal variability of soil fungal communities in different ways. For example, different crops mature at varying times throughout the growing season, and crop effects fungal on community structure may differ between the onset of growth and peak biomass [58]. Future studies will focus on experiments designed to assess the relative effects of tillage, crop life cycle, and crop diversity on soil communities in these systems, as well as assess the function of the soil communities cultivated by these cropping systems by studying effects on subsequent crop growth.…”

Section: Discussionmentioning

confidence: 99%

Community structure of soil fungi in a novel perennial crop monoculture, annual agriculture, and native prairie reconstruction

et al. 2020

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The use of perennial crop species in agricultural systems may increase ecosystem services and sustainability. Because soil microbial communities play a major role in many processes on which ecosystem services and sustainability depend, characterization of soil community structure in novel perennial crop systems is necessary to understand potential shifts in function and crop responses. Here, we characterized soil fungal community composition at two depths (0-10 and 10-30 cm) in replicated, long-term plots containing one of three different cropping systems: a tilled three-crop rotation of annual crops, a novel perennial crop monoculture (Intermediate wheatgrass, which produces the grain Kernza ® ), and a native prairie reconstruction. The overall fungal community was similar under the perennial monoculture and native vegetation, but both were distinct from those in annual agriculture. The mutualist and saprotrophic community subsets mirrored differences of the overall community, but pathogens were similar among cropping systems. Depth structured overall communities as well as each functional group subset. These results reinforce studies showing strong effects of tillage and sampling depth on soil community structure and suggest plant species diversity may play a weaker role. Similarities in the overall and functional fungal communities between the perennial monoculture and native vegetation suggest Kernza ® cropping systems have the potential to mimic reconstructed natural systems. OPEN ACCESSCitation: McKenna TP, Crews TE, Kemp L, Sikes BA (2020) Community structure of soil fungi in a novel perennial crop monoculture, annual agriculture, and native prairie reconstruction. PLoS ONE 15(1): e0228202. https://doi.org/10.

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“…Impacts of aggregation on the soil microbiome can also depend on aggregate size, as microaggregates ( < 250 μm) are reported to harbour relatively dynamic and diverse microbial communities, whereas microbial communities of macroaggregates (>250 μm) are more stable (Upton et al, 2019). The ratio of G + /Gin Re-35yrs was two times greater than that in Ug-2yrs.…”

Section: Impacts Of Soil Aggregates Sizes On Soil Microorganism Groupmentioning

confidence: 99%

“…There are also likely advantages of localizaton at the aggregate exterior, such as greater access to carbon and nutrient flow from the bulk soil. Furthermore, factors such as aggregate size may influence microbial community composition and activity (Schlüter et al, 2018;Upton et al, 2019). In Re-35yrs, the most abundant microbial diversity was found in the 3-5 mm aggregates, followed by that in the 2-3 mm aggregates.…”

Section: Impacts Of Soil Aggregates Sizes On Soil Microorganism Groupmentioning

confidence: 99%

Changes in the soil microbial communities of different soil aggregations after vegetation restoration in a semiarid grassland, China

Xue

Zhou

2020

Soil Ecol. Lett.

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Soil aggregate fractions can regulate microbial community composition and structure after vegetation restoration. However, there has been less focus on the effects of soil aggregate fractions on the distributions of microbial communities. Here, we used phospholipid fatty acid (PLFA) analysis to explore the effects of different years of vegetation restoration (a 35-year-old Thymus mongolicus community (Re-35yrs) and a 2-year-old nongrazing grassland (Ug-2yrs)) on microbial communities within different soil aggregate sizes (< 0.25 mm, 0.25-1 mm, 1-2 mm, 2-3 mm, 3-5 mm and >5 mm). The results indicated that the amount of total PLFA in Re-35yrs was 10 times greater than that in Ug-2yrs. The soil aggregate stability increased with increasing duration of vegetation restoration. In Re-35yrs, the total PLFA shown an increase as the soil aggregate size increased, and the highest values were observed in 3-5 mm. Ug-2yrs differed from Re-35yrs, the soil microbial diversity was higher in medium particle sizes (1-2 mm and 2-3 mm) and lower in microaggregates (< 0.25 mm and 0.25-1 mm) and macroaggregates (3-5 mm and >5 mm). Soil microbial diversity was highest in large particle size aggregates, which resulted in low environmental stress and strong stability. The same tendency was observed in the high values of cyc/prec, S/M and soil organic matter, which indicated a lower turnover speed (F/B) of fungal energy utilization and a higher fixation rate. After years of natural restoration, the soil microbial community generally transformed from nutrient-rich to heterotrophdominant, especially in microaggregates (reflected in the G + /G ratio).

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Spatio-temporal microbial community dynamics within soil aggregates

Cited by 117 publications

References 86 publications

Building bottom‐up aggregate‐based models (ABMs) in soil systems with a view of aggregates as biogeochemical reactors

Building bottom‐up aggregate‐based models (ABMs) in soil systems with a view of aggregates as biogeochemical reactors

Community structure of soil fungi in a novel perennial crop monoculture, annual agriculture, and native prairie reconstruction

Changes in the soil microbial communities of different soil aggregations after vegetation restoration in a semiarid grassland, China

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