Expression of macromolecular organic nitrogen degrading enzymes identifies potential mediators of soil organic N availability to an annual grass DOI Creative Commons
Ella T. Sieradzki, Erin Nuccio, Jennifer Pett‐Ridge

et al.

The ISME Journal, Journal Year: 2023, Volume and Issue: 17(7), P. 967 - 975

Published: April 14, 2023

Abstract Nitrogen (N) is frequently limiting to plant growth, in part because most soil N present as polymeric organic compounds that are not readily taken up by plants. Microbial depolymerization of these large macromolecular N-substrates gradually releases available inorganic N. While many studies have researched and modeled controls on matter formation bulk mineralization, the ecological—spatial, temporal phylogenetic—patterns underlying degradation remain unclear. We analyzed 48 time-resolved metatranscriptomes quantified N-depolymerization gene expression resolve differential habitat time specific taxonomic groups gene-based guilds. observed much higher extracellular serine-type proteases than other N-degrading enzymes, with protease predatory bacteria declining patterns driven presence (Gammaproteobacteria) or absence (Thermoproteota) live roots root detritus (Deltaproteobacteria Fungi). The primary chitinase chit1 was more highly expressed eukaryotes near detritus, suggesting predation fungi. In some lineages, increased over suggests competitiveness rhizosphere age (Chloroflexi). Phylotypes from genera had could benefit nutrition, for example, we identified a Janthinobacterium phylotype two Burkholderiales depolymerize young Rhizobacter elevated levels mature roots. These taxon-resolved results provide an ecological read-out microbial interactions dynamics microhabitats be used target potential bioaugmentation strategies.

Language: Английский

Soil organic matter formation, persistence, and functioning: A synthesis of current understanding to inform its conservation and regeneration DOI
Maurizio Cotrufo, Jocelyn M. Lavallee

Advances in agronomy, Journal Year: 2022, Volume and Issue: unknown, P. 1 - 66

Published: Jan. 1, 2022

Language: Английский

Citations

345
Fast-decaying plant litter enhances soil carbon in temperate forests but not through microbial physiological traits DOI Creative Commons
Matthew E. Craig, Kevin M. Geyer, Katilyn V. Beidler

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: March 9, 2022

Abstract Conceptual and empirical advances in soil biogeochemistry have challenged long-held assumptions about the role of micro-organisms organic carbon (SOC) dynamics; yet, rigorous tests emerging concepts remain sparse. Recent hypotheses suggest that microbial necromass production links plant inputs to SOC accumulation, with high-quality (i.e., rapidly decomposing) litter promoting use efficiency, growth, turnover leading more mineral stabilization necromass. We test this hypothesis experimentally observations across six eastern US forests, using stable isotopes measure traits dynamics. Here we show, both studies, are negatively (not positively) related mineral-associated SOC. In experiment, stimulation growth by enhances decomposition, offsetting positive effect quality on stabilization. is not primary driver persistence temperate forests. Factors such as origin, alternative formation pathways, priming effects, abiotic properties can strongly decouple from

Language: Английский

Citations

198
Persistent soil carbon enhanced in Mollisols by well-managed grasslands but not annual grain or dairy forage cropping systems DOI Creative Commons
Yichao Rui, Randall D. Jackson, Maurizio Cotrufo

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2022, Volume and Issue: 119(7)

Published: Feb. 10, 2022

Intensive crop production on grassland-derived Mollisols has liberated massive amounts of carbon (C) to the atmosphere. Whether minimizing soil disturbance, diversifying rotations, or re-establishing perennial grasslands and integrating livestock can slow reverse this trend remains highly uncertain. We investigated how these management practices affected organic (SOC) accrual distribution between particulate (POM) mineral-associated (MAOM) matter in a 29-y-old field experiment North Central United States assessed microbial traits were related changes. Compared conventional continuous maize monocropping with annual tillage, systems reduced diversified rotations cover crops legumes, manure addition did not increase total SOC storage MAOM-C, whereas pastures managed rotational grazing accumulated more MAOM-C (18 29% higher) than all cropping after 29 y management. These results align meta-analysis data from published studies comparing efficacy health worldwide. Incorporating legumes into enhanced POM-C, biomass, C-use efficiency but significantly necromass accumulation, storage. Diverse, rotationally grazed pasture potential persistent C Mollisols, highlighting key role well-managed climate-smart agriculture.

Language: Английский

Citations

105
Nitrogen availability mediates soil carbon cycling response to climate warming: A meta‐analysis DOI
Tongshuo Bai, Peng Wang, Yunpeng Qiu

et al.

Global Change Biology, Journal Year: 2023, Volume and Issue: 29(9), P. 2608 - 2626

Published: Feb. 6, 2023

Abstract Global climate warming may induce a positive feedback through increasing soil carbon (C) release to the atmosphere. Although can affect both C input and output from soil, direct convincing evidence illustrating that induces net change in is still lacking. We synthesized results field experiments at 165 sites across globe found had no significant effect on stock. On average, significantly increased root biomass respiration, but effects respiration strongly depended nitrogen (N) availability. Under high N availability (soil C:N ratio < 15), biomass, promoted coupling between sizes of relative limitation > enhanced biomass. However, enhancement did not corresponding accumulation possibly because microbial CO 2 offset input. Also, reactive alleviated warming‐induced loss elevated atmospheric or precipitation increase/reduction not. Together, our findings indicate (i.e., ratio) critically mediates dynamics, suggesting its incorporation into C‐climate models improve prediction cycling under future global scenarios.

Language: Английский

Citations

50
Plant–soil synchrony in nutrient cycles: Learning from ecosystems to design sustainable agrosystems DOI Creative Commons
Sébastien Fontaine, Luc Abbadie, Michaël Aubert

et al.

Global Change Biology, Journal Year: 2023, Volume and Issue: 30(1)

Published: Dec. 12, 2023

Abstract Redesigning agrosystems to include more ecological regulations can help feed a growing human population, preserve soils for future productivity, limit dependency on synthetic fertilizers, and reduce agriculture contribution global changes such as eutrophication warming. However, guidelines redesigning cropping systems from natural make them sustainable remain limited. Synthetizing the knowledge biogeochemical cycles in ecosystems, we outline four that synchronize supply of soluble nutrients by soil biota with fluctuating nutrient demand plants. This synchrony limits deficiencies excesses nutrients, which usually penalize both production regulating services retention carbon storage. In outlined, emerges plant–soil plant–plant interactions, eco‐physiological processes, physicochemical dynamics various reservoirs, including organic matter, minerals, atmosphere, common market. We discuss relative importance these depending pedoclimatic context functional diversity plants microbes. offer ideas about how could be stimulated within improve their sustainability. A review latest advances agronomy shows some practices suggested promote (e.g., reduced tillage, rotation perennial plant cover, crop diversification) have already been tested shown effective reducing losses, fertilizer use, N 2 O emissions and/or improving biomass Our framework also highlights new management strategies defines conditions success nature‐based allowing site‐specific modifications. synthetized should practitioners long‐term productivity while negative impact environment climate.

Language: Английский

Citations

42
Reproducible growth of Brachypodium in EcoFAB 2.0 reveals that nitrogen form and starvation modulate root exudation DOI Creative Commons
Vlastimil Novák,

Peter F. Andeer,

Benjamin P. Bowen

et al.

Science Advances, Journal Year: 2024, Volume and Issue: 10(1)

Published: Jan. 3, 2024

Understanding plant-microbe interactions requires examination of root exudation under nutrient stress using standardized and reproducible experimental systems. We grew

Language: Английский

Citations

18
Toward soil carbon storage: The influence of parent material and vegetation on profile-scale microbial community structure and necromass accumulation DOI
Yuzhu Li, Xuelian Bao,

Shixin Tang

et al.

Soil Biology and Biochemistry, Journal Year: 2024, Volume and Issue: 193, P. 109399 - 109399

Published: March 11, 2024

Language: Английский

Citations

18
Legume-rice rotations increase rice yields and carbon sequestration potential globally DOI Creative Commons
Wei Yao, Yadong Yang, Damien Beillouin

et al.

One Earth, Journal Year: 2025, Volume and Issue: unknown, P. 101170 - 101170

Published: Jan. 1, 2025

Language: Английский

Citations

3
The nitrogen gap in soil health concepts and fertility measurements DOI Creative Commons
A. Stuart Grandy, Amanda B. Daly, Timothy M. Bowles

et al.

Soil Biology and Biochemistry, Journal Year: 2022, Volume and Issue: 175, P. 108856 - 108856

Published: Oct. 21, 2022

Language: Английский

Citations

51
Retention of soil organic matter by occlusion within soil minerals DOI
Jialin Chi, Yuke Fan, Lijun Wang

et al.

Reviews in Environmental Science and Bio/Technology, Journal Year: 2022, Volume and Issue: 21(3), P. 727 - 746

Published: July 30, 2022

Language: Английский

Citations

42