Arbuscular mycorrhizal fungi as support systems for seedling establishment in grassland
Arbuscular mycorrhizal fungi as support systems for seedling establishment in grassland
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DOI：
10.1111/j.1461-0248.2004.00577.x
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发表时间：
2004-04
期刊：
影响因子：
8.8
通讯作者：
M. V. D. Heijden
中科院分区：
文献类型：
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作者：
M. V. D. Heijden
为植被补充新幼苗对于维持物种丰富的植物群落至关重要。因此，了解决定幼苗招募的因素至关重要。这里测试了丛枝菌根真菌（AMF）是否促进多年生草原群落中的幼苗补充。将四种植物物种（两种禾本科植物和两种非禾本科植物）的种子添加到接种了不同 AMF 类群的 1 年生草地微观世界内的斑块中，或对照未接种的微观世界。当 AMF 存在时，幼苗长得更大并获得更多的磷。此外，接种不同AMF类群的幼苗在微观世界中获得了不同量的磷。结果表明，AMF 通过将新出现的幼苗整合到广泛的菌丝网络中并为幼苗提供养分来促进幼苗的建立。因此，AMF 作为一种共生支持系统，可促进幼苗的建立并减少草原的补充限制。
Recruitment of new seedlings into the vegetation is essential for maintaining species rich plant communities. Hence it is of pivotal importance to understand factors determining seedling recruitment. Here it is tested whether arbuscular mycorrhizal fungi (AMF) promote seedling recruitment in perennial grassland communities. Seeds of four plant species (two grasses and two forbs) were added to patches within 1-year old grassland microcosms that were inoculated with different AMF taxa or to control microcosms that were not inoculated. The seedlings grew larger and obtained more phosphorus when AMF were present. Moreover, the seedlings obtained different amounts of phosphorus in microcosms inoculated with different AMF taxa. The results indicate that AMF promote seedling establishment by integrating emerging seedlings into extensive hyphal networks and by supplying nutrients to the seedlings. AMF, thus, act as a symbiotic support system that promotes seedling establishment and reduces recruitment limitation in grassland.