相关实验视频
Updated: Jul 9, 2025

05:34
Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus
Published on: June 6, 2025
110
一种真菌植物病原体,在德纪莱尼尼赫尔特发现
Christine Strullu-Derrien1,2, Tomasz Goral3,4, Alan R T Spencer5,6
1Science Group, The Natural History Museum, London, UK. c.strullu-derrien@nhm.ac.uk.
Nature communications
|December 1, 2023
概括
一种新发现的古老真菌,Potteromyces asteroxylicola,来自莱尼尼沙漠提供了植物致病性的证据. 这种已灭绝的Ascomycota为Dikarya真菌提供了最低年龄校准.
科学领域:
- 古代生物学的古生物学.
- 早期的陆地生态系统
- 菌类的进化 菌类的进化
背景情况:
- 菌类对生态系统功能至关重要,化石证据表明它们在4.07亿年前的陆地环境中存在.
- 迪卡里亚亚亚王国 (阿斯科米科塔和巴西迪奥米科塔类) 在莱尼尼丘陵 (Rhynie Chert) 的化石记录中表现不佳.
研究的目的:
- 描述一个新的,保存良好的无性真菌从莱尼尼沙漠.
- 为了研究这种真菌与宿主植物Asteroxylon mackiei.iei.之间的致病关系.
- 为了建立一个最小的节点年龄校准点Ascomycota和Dikarya.
主要方法:
- 化石真菌结构的显微镜检查 (明光场和共聚焦).
- 分析真菌形态及其与植物组织的相互作用.
- 在Ascomycota incertae sedis (Dikarya) 内的家族遗传位置.
主要成果:
- 发现和描述的波特罗密切斯星螺杆菌gen. et sp. 在新的一年里.
- 病原性相互作用的鉴定,包括状结构和植物反应组织.
- 有证据表明已灭绝的ascomycetes血统.
结论:
- 波特菌 (Potteromyces asteroxylicola) 代表了来自早期德纪的致病性植物真菌.
- 这种化石为阿斯科米科塔 (Ascomycota) 和潜在的迪卡里亚王冠群提供了关键的最低年龄校准.
相关概念视频
The Roles of Bacteria and Fungi in Plant Nutrition
35.7K
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.
35.7K
Epiphytes, Parasites, and Carnivores
13.0K
Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the...
13.0K
Non-vascular Seedless Plants
64.6K
The diverse plant life on Earth—consisting of nearly 400,000 species—can be divided into three broad categories based on biological characteristics: nonvascular, seedless vascular, and seed plants.
64.6K
Introduction to Plant Diversity
44.8K
From Water to Land
44.8K

