Pulse Brain · Growing Health Evidence Index
Tier 4 — Narrative / commentaryPeer-reviewed

Soil carbon sequestration by root exudates

Poonam Panchal, Catherine Preece, Josep Peñuelas, Jitender Giri

Trends in Plant Science · 2022

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Summary

This review examines how plant root exudates—organic compounds released into soil—contribute to long-term soil carbon sequestration. The authors synthesise evidence on the biochemical and microbial pathways through which exudate-derived carbon becomes incorporated and stabilised within soil organic matter, as suggested by the 2022 literature. The paper appears to highlight exudates as an underexplored mechanism in the soil carbon cycle relevant to agricultural and climate mitigation contexts.

UK applicability

Understanding root exudate mechanisms has potential relevance to UK soil management and carbon farming policy, though the review's mechanistic focus means direct translation to field practice or policy prescription may require further applied research under UK conditions.

Key measures

Mechanisms of carbon stabilisation, exudate composition, microbial processing, organic matter persistence

Outcomes reported

The paper reviews mechanisms by which plant root exudates contribute to soil carbon sequestration and persistence. It synthesises current understanding of how exudate-derived carbon is stabilised in soil and factors affecting this process.

Theme
Farming systems, soils & land use
Subject
Soil carbon & organic matter
Study type
Narrative Review
Study design
Narrative review
Source type
Peer-reviewed study
Status
Published
Geography
International
System type
Laboratory / in vitro
DOI
10.1016/j.tplants.2022.04.009
Catalogue ID
SNmok1vyn9-owzqgt

Topic tags

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