菌根菌が豊富にある地球上のホットスポットは 保護が不十分です
Michael E Van Nuland1, Colin Averill2,3, Justin D Stewart4,5
1Society for the Protection of Underground Networks (SPUN), Dover, DE, USA. michael@spun.earth.
Nature
|July 23, 2025
まとめ
菌根菌は 生態系の重要なエンジニアですが 全球での分布は不明です この研究はキノコの多様性をマッピングし ほとんどのホットスポットが保護されていないことを明らかにし 緊急の保全の必要性を強調しています
科学分野:
- エコロジー
- 菌類学
- 生物多様性科学
背景:
- 菌根菌は植物の生命と生地化学のサイクルに不可欠です
- 菌根菌の生物多様性のグローバル分布はほとんど知られず,保全の努力を妨げています.
- 地下の生態系は 植物や動物と比べれば まだ十分に研究されていない
研究 の 目的:
- 状菌類と状菌類の世界の多様性と希少性を予測し,マッピングする.
- 多様で固有の菌根菌群の主要な貯水池を特定する.
- 菌根菌ホットスポットの保全状態を評価する.
主な方法:
- 機械学習アルゴリズムは 25,000個の地理的に位置づけられた土壌サンプルからなる グローバルデータセットで訓練されました
- 28億以上のキノコのDNA配列が分析されました
- 菌根菌の多様性に関する高解像度グローバルスケールの地図が作成されました.
主要な成果:
- グローバルマップは 樹状菌とエクトミコリザル菌の 豊富さと希少性を予測しています
- 菌根群の多様性と特有性の高い主要な貯水池が特定されました.
- 菌糸菌が豊富に存在するホットスポットの10%未満が 保護区内にある.
結論:
- この研究は地球の地下生態系の 隠された要素を明らかにしています
- この発見は,菌根菌の保全の優先順位を特定するための重要なデータを提供します.
- 結果は,モニタリングの基準,修復計画,土地管理戦略を参考にすることができます.
関連する概念動画
01:29Fungal Group Zygomycota
122
Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...
122
02:11The Roles of Bacteria and Fungi in Plant Nutrition
41.1K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
41.1K
01:50Threats to Biodiversity
22.9K
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
22.9K
01:28Fungal Phylum Microsporidia
122
Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
122
01:29Overview of Fungi
204
Fungi are a diverse group of eukaryotes more closely related to animals than other eukaryotes. Fungal cell walls comprise chitin, a polysaccharide that provides structural strength, and glucans, which contribute to flexibility and integrity. Other polysaccharides, such as mannans and galactosans, may supplement or replace chitin in some fungi. These adaptations, along with their preference for acidic environments and tolerance for high osmotic pressure, enable fungi to thrive in various...
204
01:26Fungal Phylum Basidiomycota
226
Basidiomycota is a diverse phylum of fungi that includes ecologically significant decomposers such as white rot fungi, symbionts like mycorrhizal fungi, plant pathogens such as rusts and smuts, and edible species like Agaricus bisporus (the common button mushroom). These fungi play crucial roles in nutrient cycling, symbiotic relationships, and even human health. Their defining feature is the basidium, a microscopic club-shaped structure responsible for producing basidiospores.Fruiting Bodies...
226