研究揭示丛枝菌根真菌网络的全球密度和生物量
研究揭示丛枝菌根真菌网络的全球密度和生物量
作者: 小柯机器人 发布时间:2026/6/12 16:26:52
本期文章:《科学》:Volume 392 Issue 6803
荷兰阿姆斯特丹自由大学E. Toby Kiers团队的一项最新研究揭示出丛枝菌根真菌网络的全球密度和生物量。该项研究成果发表在2026年6月11日出版的《科学》上。
然而,研究组对进行这种抗性转移所需的菌丝基础结构没有定量的了解。课题组人员收集了来自9个生物群系的322项研究的数据,这些研究代表了16,000多个土壤核心,并开发了机器学习模型来预测全球菌丝密度。通过对超过30万个菌丝的机器人成像,该研究团队根据它们的空间预测校准了一个生物量模型。研究团队估计全球表层土壤含有1.10 × 10 17 ±0.13 × 10 17 SD公里的活菌丝,重约300±60 SD兆吨,约为人类生物量的4- 6倍。他们的不确定性分析确定了采样不足的生态系统,需要额外的经验关注。
研究人员表示,枝状菌根真菌与约70%的植物物种形成共生关系,建立菌丝网络,交换营养物质以获取宿主衍生的碳。这些管状网络每年向地球土壤中输送约10亿吨碳。
附:英文原文
Title: Global density and biomass of arbuscular mycorrhizal fungal networks
Author: Justin D. Stewart, Corentin Bisot, Rachael I. M. Cargill, Michael E. Van Nuland, Heidi-Jayne Hawkins, Loreto Oyarte Galvez, Malin Klein, Marije van Son, Victoria Terry, Louis Paré, Claudia Banchini, Franck Stefani, Felix Kahane, Kai-Kai Lin, Renato K. Braghiere, Katie J. Field, Nadejda A. Soudzilovskaia, Jinsu Elhance, Vasilis Kokkoris, Merlin Sheldrake, James T. Weedon, Thomas S. Shimizu, Stuart West, E. Toby Kiers
Issue&Volume: 2026-06-11
Abstract: Arbuscular mycorrhizal fungi form symbioses with ~70% of plant species, building hyphal networks that exchange nutrients for host-derived carbon. These tubular networks move ~1 billion metric tons of carbon per year into Earth’s soils. However, we have no quantitative understanding of the hyphal infrastructure required to carry out this resource transfer. We assembled data from 322 studies representing more than 16,000 soil cores across nine biomes and developed machine-learning models to predict hyphal densities globally. With robotic imaging of more than 300,000 hyphae, we calibrated a biomass model from our spatial predictions. We estimate that global topsoils contain 1.10 × 1017 ± 0.13 × 1017 SD kilometers of living hyphae, weighing ~300 ± 60 SD megatons, ~4- to 6-fold the biomass of humans. Our uncertainty analyses identified undersampled ecosystems that require additional empirical attention.
DOI: adu4373
Source: https://www.science.org/doi/10.1126/science.adu4373
主题:生物量