Priming effects in Chernozem induced by glucose and N in relation to microbial growth strategies

Blagodatskaya, Еvgenia; Blagodatsky, Sergey; Anderson, Traute‐Heidi; Kuzyakov, Yakov

doi:10.1016/j.apsoil.2007.05.002

Cited by 395 publications

(216 citation statements)

References 42 publications

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“…The rapid priming (the peak in primed-CO 2 occurred before the peak in sucrose derived-CO 2 ) due to microbial nutrient demand as indicated by our data is consistent with some studies of temperate soils (Zyakun and Dilly 2005;Blagodatskaya et al 2007;Nottingham et al 2009), but at odds with others that do not predict such rapid priming (Fontaine et al 2004) or an increased production of extracellular enzymes (De Nobili et al 2001). This suggests that different mechanisms may apply in different soils on different time scales.…”

Section: Priming Mechanismscontrasting

confidence: 50%

“…First, priming may occur when microorganisms become nutrient-limited during the degradation of new labile C and co-metabolize pre-existing soil organic matter to meet their nutrient demands, leading to soil C being mineralized and released as 'primed' CO 2 (Blagodatskaya and Kuzyakov 2008). Supporting evidence for this mechanism is provided by laboratory experiments on temperate soils, which measured increased activity of organic nitrogen (N)-degrading enzymes during priming (Asmar et al 1994) and a reduction in priming when N was added with labile C, due to a switch from soil C to added labile C as the preferred substrate ('preferential substrate utilization'; Hagedorn et al 2003;Blagodatskaya et al 2007). …”

Section: Introductionmentioning

confidence: 80%

“…Therefore, factors other than fertility constrained microbial metabolism of soil C through priming in the low-fertility soil. We hypothesize that priming was limited by both nutrient deficiency to microorganisms (Blagodatskaya et al 2007) and the concentration and 'lability' of soil organic matter (Kuzyakov and Bol 2006). Thus, sucrose-C additions did not lead to significant priming in the high fertility soil because microbial nutrient limitation was insufficient, while in the low fertility soil priming was limited because the pool of soil C amenable to priming was insufficient.…”

Section: Priming and Soil Fertilitymentioning

confidence: 99%

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Priming and microbial nutrient limitation in lowland tropical forest soils of contrasting fertility

et al. 2011

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Section: Priming Mechanismscontrasting

confidence: 50%

Section: Introductionmentioning

confidence: 80%

Section: Priming and Soil Fertilitymentioning

confidence: 99%

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Priming and microbial nutrient limitation in lowland tropical forest soils of contrasting fertility

et al. 2011

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“…Two functionally distinct groups of microorganisms are postulated to mediate priming: one that grows rapidly utilizing labile C, and one that grows slowly, breaking down recalcitrant SOC (Fontaine et al, 2003;Blagodatskaya et al, 2007). However, distinguishing these groups is technically challenging.…”

mentioning

confidence: 99%

Linking soil bacterial biodiversity and soil carbon stability

et al. 2014

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Native soil carbon (C) can be lost in response to fresh C inputs, a phenomenon observed for decades yet still not understood. Using dual-stable isotope probing, we show that changes in the diversity and composition of two functional bacterial groups occur with this 'priming' effect. A single-substrate pulse suppressed native soil C loss and reduced bacterial diversity, whereas repeated substrate pulses stimulated native soil C loss and increased diversity. Increased diversity after repeated C amendments contrasts with resource competition theory, and may be explained by increased predation as evidenced by a decrease in bacterial 16S rRNA gene copies. Our results suggest that biodiversity and composition of the soil microbial community change in concert with its functioning, with consequences for native soil C stability.

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“…When assessing the priming effect, it is important to distinguish the CO 2 produced by the nutrient input. The apparent priming effect is controlled mainly by two mechanisms: the increase turnover of microbial biomass and the activation of microbial metabolism (Blagodatskaya et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Priming Effect Induced by the Use of Different Fertilizers on Soil Functional Diversity

Onica¹,

Vidican²,

Stoian³

et al. 2017

UASVMCN-AGR

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Agricultural practices, such as the use of fertilizers, can change the structure and function of soil microbial community. Monitoring and assessing the soil microbiota and its dynamics related to different factors can be a powerful tool for understanding basic and applied ecological contexts. The main objective of this paper was to assess the changes of carbon turnover rate and the microbial metabolic activity, when different types of fertilizers were used, process called priming effect. A microcosm experiment was designed and performed under controlled temperature and humidity and the soil samples were analyzed using the MicroResp technique. Results show that the integration in soil of different carbon sources, such as green manure, can lead to a positive priming effect and integration of mineral fertilizers can lead to negative priming effect. The carbon sources with the highest respiratory activity were α-ketoglutaric acid, malic acid, oxalic acid, citric acid, while the lowest respiratory activity was obtained in case of arginine.

show abstract

Priming effects in Chernozem induced by glucose and N in relation to microbial growth strategies

Cited by 395 publications

References 42 publications

Priming and microbial nutrient limitation in lowland tropical forest soils of contrasting fertility

Priming and microbial nutrient limitation in lowland tropical forest soils of contrasting fertility

Linking soil bacterial biodiversity and soil carbon stability

Priming Effect Induced by the Use of Different Fertilizers on Soil Functional Diversity

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