Climate change effects on biomass and greenhouse gas emissions are ameliorated by nontoxic endophytes in southeastern USA transition zone tall fescue pastures
気候変動がバイオマスと温室効果ガス排出に与える影響は、米国南東部移行帯のトールフェスク牧草地における無毒内生菌によって緩和される (AI 翻訳)
Rebecca K. McGrail, Jonathan D. Moore, A. Elizabeth Carlisle, Jim A. Nelson, Rebecca L. McCulley
🤖 gxceed AI 要約
日本語
米国南東部のトールフェスク牧草地で、無毒内生菌（NTE）感染が気候変動（高温・降水パターン変化）下でのバイオマスと温室効果ガス（GHG）排出に与える影響を調査。内生菌感染により地上部バイオマスが24%増加し、一部条件下でCO2排出が減少したが、アンモニア揮散が増加する場合もあった。これらの共生関係は気候変動下での牧草地の回復力を高める可能性がある。
English
In southeastern US tall fescue pastures, nontoxic endophyte (NTE) infection increased aboveground biomass by 24% and reduced CO2 emissions under certain conditions, though it increased NH3 volatilization in some cases. The symbiosis may improve pasture resiliency under projected climate change.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
In the global GX context
This study highlights how plant-microbe interactions can enhance agricultural resilience and mitigate GHG emissions under climate change, contributing to global climate adaptation and mitigation strategies in the land sector.
👥 読者別の含意
🔬研究者:Provides empirical evidence on the role of nontoxic endophytes in modulating biomass and GHG emissions under climate change, relevant for agricultural climate adaptation research.
📄 Abstract（原文）
Abstract Background The plant–microbe interaction between tall fescue and its endophyte Epichloë coenophiala can affect ecosystem responses to changing rainfall patterns and increasing temperatures. Endophyte‐infected (E+) stands often exhibit improved stress tolerance and differing soil greenhouse gas (GHG) emissions compared to endophyte‐free (E−) stands. However, it is unknown if mammalian nontoxic endophyte (NTE) strains introduced into some tall fescue cultivars confer differing stress tolerances or reduce soil GHG emissions. Methods We quantified the impact of fescue‐NTE symbioses in Jesup and Texoma on biomass and GHG emissions in response to increased temperature (+3°C) and altered precipitation (50% lengthened interval between events) using a factorial design in the United States southeastern transition zone over 2 consecutive years (2016–2017). Results Endophyte infection increased aboveground biomass 24% across years, whereas heat decreased aboveground biomass 17% across tall fescue cultivars and years. Endophyte infection reduced CO 2 emissions under both ambient (for Jesup) and heated conditions (for Texoma), but endophyte infection also increased NH 3 volatilization for Texoma (no effect for Jesup), especially under the hottest and driest treatment. Conclusions Fescue‐NTE symbioses may improve pasture resiliency with projected climate change for the study region.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.1002/glr2.70042first seen 2026-05-14 22:51:19
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