Nutrients addition regulates temperature sensitivity of maize straw mineralization

Auwal, Muhammad; Singh, Bhupinder; Chen, Zhiyi; Kumar, Amit; Pan, Shangzhi; Luo, Yu; Xu, Jianming

doi:10.1007/s11368-021-02960-9

Cited by 9 publications

(6 citation statements)

References 112 publications

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“…Each glass jar contained two 50 ml vials, one with 20 ml of 1.0 M NaOH to absorb the CO 2 , and the other with 10 ml of deionized water to maintain a moist atmosphere ( Auwal et al, 2021 ). An additional four blank jars that contained only water and NaOH were established to account for the headspace CO 2 .…”

Section: Methodsmentioning

confidence: 99%

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Tradeoffs of microbial life history strategies drive the turnover of microbial-derived organic carbon in coastal saline soils

Chen

et al. 2023

Front. Microbiol.

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Stable soil organic carbon (SOC) formation in coastal saline soils is important to improve arable land quality and mitigate greenhouse gas emissions. However, how microbial life-history strategies and metabolic traits regulate SOC turnover in coastal saline soils remains unknown. Here, we investigated the effects of microbial life history strategy tradeoffs on microbial carbon use efficiency (CUE) and microbial-derived SOC formation using metagenomic sequencing technology in different salinity soils. The results showed that high-salinity is detrimental to microbial CUE and microbial-derived SOC formation. Moreover, the regulation of nutrients stoichiometry could not mitigate adverse effects of salt stress on microbial CUE, which indicated that microbial-derived SOC formation is independent of stoichiometry in high-salinity soil. Low-salinity soil is dominated by a high growth yield (Y) strategy, such as higher microbial biomass carbon and metabolic traits which are related to amino acid metabolism, carbohydrate metabolism, and cell processes. However, high-salinity soil is dominated by stress tolerance (S) (e.g., higher metabolic functions of homologous recombination, base excision repair, biofilm formation, extracellular polysaccharide biosynthesis, and osmolytes production) and resource acquisition (A) strategies (e.g., higher alkaline phosphatase activity, transporters, and flagellar assembly). These trade-offs of strategies implied that resource reallocation took place. The high-salinity soil microbes diverted investments away from growth yield to microbial survival and resource capture, thereby decreasing biomass turnover efficiency and impeding microbial-derived SOC formation. Moreover, altering the stoichiometry in low-salinity soil caused more investment in the A-strategy, such as the production of more β-glucosidase and β-N-acetyl-glucosaminidase, and increasing bacterial chemotaxis, which thereby reduced microbial-derived SOC formation. Our research reveals that shift the microbial community from S- and A- strategies to the Y-strategy is important to increase the microbial CUE, and thus enhance SOC turnover in coastal saline soils.

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Section: Methodsmentioning

confidence: 99%

“…The amount of CO 2 was determined by titrating the NaOH solution with 1.0 M of standardized HCl. The stable 13 C isotope ratios of CO 2 -C were determined as previously described ( Auwal et al, 2021 ; Chen et al, 2022 ). Briefly, 10 ml of 1.0 M NaOH was added with 10 ml of 1.5 M BaCl 2 to precipitate the carbonates.…”

Section: Methodsmentioning

confidence: 99%

Tradeoffs of microbial life history strategies drive the turnover of microbial-derived organic carbon in coastal saline soils

Chen

et al. 2023

Front. Microbiol.

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“…Soil samples were incubated under two soil moisture (30%WHC, representing an extreme dry condition, and 60%WHC, close to the optimum soil moisture for microbes) and two temperature (18 • C, close to the annual mean temperature of the sampling site, and 28 • C, for the purpose of obtaining Q 10 values) [14,37] regimes for 120 days. Such a design produced 12 treatment combinations with 9 replicates per combination (3 vegetation stages × 2 moisture regimes × 2 temperature regimes × 9 replicates).…”

Section: Soil Incubation Experimentsmentioning

confidence: 99%

“…where R, p, and D are SOC decomposition rate per day, incubation period, and incubation time (day), respectively. We calculated the Q 10 of SOC decomposition during the incubation as follows [14,22,37,39]:…”

Section: Soil Incubation Experimentsmentioning

confidence: 99%

“…It is well known that the decomposition of soil organic carbon (SOC) is related to soil available substrate, microbial community and activities, as well as climate and soil properties, such as moisture, temperature status, and soil texture [9][10][11][12][13]. Previous studies indicated that higher SOC and nutrient contents usually led to a higher amount of SOC decomposition [12][13][14]. However, due to the higher labile carbon content in the plantation forest used in their study, which could support more populations of microbes, Huang et al [15] found that SOC decomposition was greater in the plantation forest than that in the natural forest.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Moisture and Temperature on Soil Organic Carbon Decomposition along a Vegetation Restoration Gradient of Subtropical China

Fang

Liu

et al. 2022

Forests

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Vegetation restoration can affect the process of soil organic carbon (SOC) decomposition, but how this effect is related to soil moisture and temperature remains uncertain. Thus, we performed an incubation of 120 days using soils of degraded land, plantation forest, and secondary natural forest, at two levels of temperature under two moisture levels. We found that the amount of cumulative SOC decomposition in the plantation and secondary natural forest soil was ca. 11.7 times higher than that in the soil from degraded land. Higher soil moisture and temperature treatment increased SOC decomposition in the plantation and secondary natural forest soils. However, in the soil from degraded land, higher soil moisture did not increase SOC decomposition, and higher temperature only increased SOC decomposition in the 60%WHC treatment. The amount of cumulative SOC decomposition was positively correlated with soil MBC and DOC content. The responses of SOC decomposition and the decomposability of DOC to moisture and temperature along the vegetation restoration gradient were highly consistent. Furthermore, in the 60%WHC treatment group, the temperature sensitivity (Q10) of SOC decomposition declined with vegetation restoration age increase. Higher soil moisture did not affect Q10 in the plantation and secondary natural forest soil, but increased Q10 in the soil from degraded land. Our results indicate that higher soil temperature and moisture would stimulate SOC decomposition, but it is highly dependent on labile carbon supply and microbial metabolic activity along the vegetation restoration gradient.

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Pyrogenic organic matter decreases while fresh organic matter increases soil heterotrophic respiration through modifying microbial activity in a subtropical forest

Zhou,

Zhang,

Hui

et al. 2024

Biol Fertil Soils

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Nutrients addition regulates temperature sensitivity of maize straw mineralization

Cited by 9 publications

References 112 publications

Tradeoffs of microbial life history strategies drive the turnover of microbial-derived organic carbon in coastal saline soils

Tradeoffs of microbial life history strategies drive the turnover of microbial-derived organic carbon in coastal saline soils

Effects of Moisture and Temperature on Soil Organic Carbon Decomposition along a Vegetation Restoration Gradient of Subtropical China

Pyrogenic organic matter decreases while fresh organic matter increases soil heterotrophic respiration through modifying microbial activity in a subtropical forest

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