Fungal endophyte symbiosis and plant diversity in successional fields
Fungal endophyte symbiosis and plant diversity in successional fields
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DOI：
10.1126/science.285.5434.1742
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发表时间：
1999-09-10
期刊：
影响因子：
56.9
通讯作者：
Holah, J
中科院分区：
文献类型：
--
作者：
Clay, K;Holah, J
越来越多的证据表明微生物相互作用是植物生物多样性的重要决定因素。通过操纵高羊茅（美国东部最丰富的多年生草本植物）的感染，检验了真菌内生菌共生降低演替田地多样性的假设。历时4年多。相对于未感染地块，感染地块的物种丰富度下降，高羊茅优势度增加，但总生产力没有差异。生物量可忽略不计的宿主特异性内生菌在长期田间实验中改变了植物群落结构，并可能在其不断扩大的范围内减少植物多样性。
Increasing evidence suggests that microbial interactions are important determinants of plant biodiversity. The hypothesis that fungal endophyte symbiosis reduces diversity in successional fields was tested by manipulating infection of tall fescue, the most abundant perennial grass in the eastern United States. Over a 4-year period. species richness declined and tall fescue dominance increased in infected plots relative to uninfected plots without differences in total productivity. A host-specific endophyte, with negligible biomass, altered plant community structure in this Long-term field experiment and may be reducing plant diversity throughout its expanding range.