Extraction of Soil Organic Nitrogen by Organic Acids and Role in Mineralization of Nitrogen in Soil

Matsumoto, Shingo; Ae, Noriharu; Matsumoto, Toshikazu

doi:10.1111/j.1747-0765.2005.tb00048.x

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…Indeed, C amendments decreased total extractable N in all C treatments except oxalate (Figure 1C). Although oxalate increased microbial activity, its effect on total extractable N may have been mediated by the ability of organic acids like oxalate to act as a chelating agent -extracting organic N from soil (Matsumoto et al, 2005). These results support the importance of both VOCs and LMW-DOC as C substrates for soil microbial communities and suggest that VOCs can have equivalent if not greater effects on microbial activity -including N demand.…”

Section: Discussionmentioning

confidence: 56%

Volatile and Dissolved Organic Carbon Sources Have Distinct Effects on Microbial Activity, Nitrogen Content, and Bacterial Communities in Soil

et al. 2022

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Variation in microbial use of soil carbon compounds is a major driver of biogeochemical processes and microbial community composition. Available carbon substrates in soil include both low molecular weight dissolved organic carbon (LMW-DOC), and volatile organic compounds (VOCs). To compare the effects of LMW-DOC and VOCs on soil chemistry and microbial communities under different moisture regimes, we performed a microcosm experiment with ve levels of soil water content (ranging from 25-70% waterholding capacity) and ve levels of carbon amendment: a no carbon control, two dissolved compounds (glucose and oxalate), and two volatile compounds (methanol and α-pinene). Microbial activity was measured throughout as soil respiration; at the end of the experiment, we measured extractable soil organic carbon and total extractable nitrogen and characterized prokaryotic communities using amplicon sequencing. All C amendments increased microbial activity, and all except oxalate decreased total extractable nitrogen. Likewise, individual phyla responded to speci c C amendments -e.g., Proteobacteria increased under addition of glucose, and both VOCs. Further, we observed an interaction between moisture and C amendment, where both VOC treatments had higher microbial activity than LMW-DOC treatments and controls at low moisture. Across moisture and C treatments, we identi ed that Chloro exi, Nitrospirae, Proteobacteria, and Verrucomicrobia were strong predictors of microbial activity, while Actinobacteria, Bacteroidetes, and Thaumarcheota strongly predicted soil extractable nitrogen.These results indicate that the type of labile C source available to soil prokaryotes can in uence both microbial diversity and ecosystem function and that VOCs may drive microbial functions and composition under low moisture conditions.

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Section: Discussionmentioning

confidence: 56%

Volatile and Dissolved Organic Carbon Sources Have Distinct Effects on Microbial Activity, Nitrogen Content, and Bacterial Communities in Soil

et al. 2022

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“…In addition to the well‐known role that cluster roots play in P acquisition (Lambers, Clode et al., ; Lambers, Martinoia et al., ), they have been implicated in the modification of N cycling. Organic acids, such as those exuded by cluster roots, are known to increase the solubility of organic‐N in the soil (Matsumoto, Ae, & Matsumoto, ) which in concert with altering the pH of the rhizosphere and modification to microbial activity (Delgado, Zuniga‐Feest, Almonacid, Lambers, & Borie, ) likely alters organic‐N cycling in proximity to cluster roots. This could account for the elevated [N] (Figure b) and enriched leaf δ 15 N (Figure b) in C. sublimis compared with F. brayleyana .…”

Section: Discussionmentioning

confidence: 99%

“…In addition to the well-known role that cluster roots play in P acquisition (Lambers, Clode et al, 2015;Lambers, Martinoia et al, 2015), they have been implicated in the modification of N cycling. Organic acids, such as those exuded by cluster roots, are known to increase the solubility of organic-N in the soil (Matsumoto, Ae, & Matsumoto, 2005) Reforestation methods vary between countries and among land managers and are dependent upon the ecological circumstances and stated goals of the reforestation programme (Lamb, Erskine, & Parrotta, 2005). However, it is apparent that successful reforestation requires a detailed knowledge of the history of site degradation and the implications for the edaphic properties at a site (Griscom & Ashton, 2011).…”

Section: Discussionmentioning

confidence: 99%

The role of topography and plant functional traits in determining tropical reforestation success

Cheesman

Preece

Oosterzee

et al. 2017

Journal of Applied Ecology

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Early establishment and sapling growth is a key phase in ensuring cost‐effective reforestation success in relation to biodiversity outcomes. Therefore, species selection must consider the interaction between plant functional traits and the often‐challenging and heterogeneous biophysical environment of degraded landscapes. In this study, we examine how microtopography (slope) results in spatial heterogeneity of soil nutrients, especially phosphorus (P) in a degraded tropical pasture landscape in Queensland, Australia. We then explore how this small‐scale heterogeneity influences the growth of two native tree species, Cardwellia (C.) sublimis (Proteaceae) and Flindersia (F.) brayleyana (Rutaceae), which differ in key nutrient‐acquisition strategies. The proteaceous C. sublimis was found to be buffered from possible P limitation in degraded soils due to its effective P acquisition by cluster roots. In contrast to C. sublimis, which showed no difference in growth after 5 years across a range of soil conditions, F. brayleyana was found to be highly responsive to soil conditions with increased growth in low‐slope, higher P availability areas. The ability of F. brayleyana to take advantage of high soil P levels, including the development of leaves with higher P concentrations, resulted in an apparent switch in competitive fitness between these two species across a landscape gradient. Synthesis and applications. In a detailed study of a landscape reforestation experiment in North Queensland, Australia, we demonstrate that site edaphic factors can vary within tens of metres due to topographic relief, and that species respond differently to these conditions. We therefore show the need to consider both the spatial heterogeneity of edaphic factors and the below‐ground functional traits of potential reforestation species when planning reforestation programmes.

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Evaluation of the mineralizable organic nitrogen in soil using an immunological technique

Matsumoto¹,

Koyama

et al. 2008

Biol Fertil Soils

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Extraction of Soil Organic Nitrogen by Organic Acids and Role in Mineralization of Nitrogen in Soil

Cited by 8 publications

References 23 publications

Volatile and Dissolved Organic Carbon Sources Have Distinct Effects on Microbial Activity, Nitrogen Content, and Bacterial Communities in Soil

Volatile and Dissolved Organic Carbon Sources Have Distinct Effects on Microbial Activity, Nitrogen Content, and Bacterial Communities in Soil

The role of topography and plant functional traits in determining tropical reforestation success

Evaluation of the mineralizable organic nitrogen in soil using an immunological technique

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