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Iron stimulates greenhouse gas production in Southeast Asian peatlands

鉄は東南アジアの泥炭地における温室効果ガス生成を刺激する (AI 翻訳)

Andrew Elohim Laloo, Abhishek Gupta, Valeria Verrone, Rama Kant Dubey, Pierre Taillardat, Rajpirathap Nagasaijanani, Muhammad Iman Faisal Harahap, Agnieszka M Banas, Krzysztof Banas, Raktim Bhattacharya, Sophie Lok Sze Min, Yi Zi Koh, Fairuz Razali, Nikken Irfa Nastiti, Eka Sri Kandi Putri, Sofyan Kurnianto, Chandra Shekhar Deshmukh, Romy Chakraborty, Sanjay Swarup

ISME Communications📚 査読済 / ジャーナル2026-06-05#気候科学Origin: Global対象セクター: agriculture
DOI: 10.1093/ismeco/ycag139
原典: https://doi.org/10.1093/ismeco/ycag139
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🤖 gxceed AI 要約

日本語

本研究は、東南アジアの熱帯泥炭地における鉄（Fe(III)）が微生物による有機物分解を促進し、CO2とCH4の生成を数倍に増加させることを、マルチオミクス解析で示した。特に、炭水化物の枯渇と発酵性微生物の増加が関連し、鉄が炭素変換と気候変動への影響を過小評価されていることを示唆する。

English

This study reveals that iron (Fe(III)) stimulates microbial decomposition of organic matter in Southeast Asian tropical peatlands, leading to several-fold higher CO2 and CH4 production. Multi-omics analysis links gas emissions to carbohydrate depletion and enrichment of fermentative microbes, highlighting the underestimated role of iron in carbon transformation and climate change impacts.

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

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本のGX文脈では、熱帯泥炭地の排出削減は国際的な気候変動対策の一部であり、日本の企業が関与するアブラヤシ農園などのサプライチェーン排出削減に示唆を与える。ただし、直接的な国内政策連動は限定的。

In the global GX context

This paper contributes to global understanding of peatland carbon dynamics, relevant to climate change mitigation strategies and land-use policies in tropical regions. It underscores the need to account for iron-mediated emissions in national greenhouse gas inventories and climate models.

👥 読者別の含意

🔬研究者:Provides mechanistic insights into iron's role in peatland carbon cycling, informing biogeochemical models.

🏛政策担当者:Highlights an overlooked emission source in tropical peatlands, relevant for land-use and climate policy.

📄 Abstract（原文）

Abstract Iron (Fe) acts as a terminal electron acceptor (TEA) for microbes under oxygen limiting condition, leading to organic matter (OM) decomposition and emission of carbon greenhouse gases (C-GHG) in peatlands. The underlying molecular mechanism governing this phenomenon is not fully understood. Here, we investigate the role of Fe(III) in C-GHG production using a muti-omics approach through a lab-based microcosm experiment on tropical peat collected from three different depths of an Acacia plantation site. Fe(III) amendment leads to several folds higher production of CO2 and CH4 than unamended setups. Moreover, the gas profile correlates with depletion of carbohydrate compounds in the upper and middle depths, indicating microbial preference for readily fermentable substrates, aligning with increased CO2 production as well as the enrichment of fermentative microbes and genes associated with complex organic carbon degradation. Our study highlights the underestimated role of Fe(III) in carbon transformation and potentially exacerbating climate change impacts on tropical peatlands.

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