根滲出物が分子アーキテクトとして構築湿地の窒素循環の炭素フットプリントを再定義する：生態応答から応用展望まで

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Provides a mechanistic framework for studying root exudate-microbe interactions in nitrogen cycling, useful for designing low-carbon wastewater treatment systems.

🏢実務担当者:Offers insights into optimizing constructed wetland operations for enhanced nitrogen removal and reduced greenhouse gas emissions, applicable to water treatment facilities.

🏛政策担当者:Highlights the potential of nature-based solutions for climate mitigation in water management, informing policy on low-carbon infrastructure.

Root exudates act as a universal currency in the rhizosphere, mediating microbial signaling, participating in nitrogen cycling, and potentially mitigating the carbon footprint of constructed wetlands (CWs). This review highlights the roles of root exudates in the molecular regulation of plant-microbial interactions and their potential use in eco-regulation strategies aimed at carbon-neutral nitrogen removal in CWs. Specifically, the characteristics of root exudates released by CWs macrophytes, and their dynamics features under environmental fluctuations were synthesized, followed by a detailed summary of the colonization mechanisms of N-cycling microorganisms mediated by the dual roles of root-derived signaling molecules. Furthermore, molecular-level insights into the niche differentiation, metabolic patterns and ecological functions of microbial communities involved in nitrogen conversion responding to macrophyte-regulated exudates were comprehensively elucidated. The promising application scenarios of exudate-enhanced nitrogen removal and greenhouse gas mitigation were delineated, together with the challenges associated with practical implementation. Though translating microscale regulatory mechanisms into large-scale applications remains challenging, a forward-looking research roadmap is proposed to deepen the multidimensional mechanistic understandings of the interplays between root exudates and N-cycling microbes, advance technical innovations in root exudates engineering and promote eco-regulation toward climate-friendly CWs. This review aims to provide nature-based guidance for designing and operating optimized CWs for water remediation, with particular emphasis on the management of nitrogenous pollutants through low carbon approaches. Four panels illustrate exudates-driven nitrogen cycling: secretion dynamics, biofilm formation, microbial processes, and practical applications.The image features four panels detailing plant-root interactions in nitrogen cycling. The top left panel, "Secretion dynamics," displays three plant roots with icons for NO3-, NH4+, and NO2-, indicating exudates secretion influenced by macrophyte types, nutrient availability, and temperature, with colored circles for sugars and organic compounds below. The top right panel, "Biofilm formation," shows roots exuding substances to attract mobile microbes, leading to aggregation and biofilm development. The bottom left panel, "Practical application," depicts application scenario of rhizosphere exudates for enhanced wastewater purification and reduced N2O emissionsa. The bottom right panel, "Microbial processes," outlines denitrification, nitrification, and Anammox processes related to root exudates under varied environmental conditions.

• openalex https://doi.org/10.6084/m9.figshare.33265405first seen 2026-08-19 04:49:03 · last seen 2026-08-19 04:49:06