内生菌感染增加了宿主草群体的地下过度产量效应,主要是通过增加补充效应来增加补充效应
Yaobing Qu1, Tianzi Qin1, Junzhen Zhang1
1Department of Plant Biology and Ecology, College of Life Sciences, Nankai University, Tianjin, China.
Frontiers in plant science
|July 3, 2023
概括
藻内植物增强了植物群的生物量和多样性,特别是在地下. 这些共生微生物促进过度产量和互补效应,有助于草原的稳定性和生产力.
科学领域:
- 生态生态学 生态生态学
- 植物科学 植物科学
- 微生物学 微生物学
背景情况:
- 植物物种的多样性影响着社区的生产力和过度产量.
- 长内植物是共生微生物,可以调节植物群落.
- 内植物对社区多样性影响的影响往往被忽视.
研究的目的:
- 研究Epichloë内植物对宿主植物社区生物质多样性的影响.
- 确定内植物如何影响社区过度产量和多样性效应.
- 探索内植物,土壤微生物和植物多样性之间的相互作用.
主要方法:
- 构建了人工植物群落,其中包括受内菌感染的 (E+) 和无内菌感染的 (E-) Achnatherum sibiricum 和另外三种.
- 通过使用1个物种单一栽培和2个和4个物种混合物来提高物种多样性.
- 利用活的和消毒的土壤来评估土壤微生物的作用.
主要成果:
- 内生菌感染显著增加了地下生物量和某些物种的丰度.
- 内生菌感染在4种物种混合物中显著增加了社区多样性 (均性).
- 内生植物增加了对地下生物质的过度产量和补充效应,特别是在活土壤中.
结论:
- 在不同社区,Epichloë内植物促进地下过度产量,有助于生产力.
- 内植物和土壤微生物独立且类似地对地下生物质产生互补作用.
- 内植物可能是植物多样性和生产力之间的积极关系的一个关键因素,解释了草原的稳定共存.
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