期刊
PLANT CELL AND ENVIRONMENT
卷 36, 期 11, 页码 1926-1937出版社
WILEY
DOI: 10.1111/pce.12102
关键词
Rhizophagus irregularis; arbuscular mycorrhizal (AM) incompatibility; AM network; growth reduction; model system; non-mycorrhizal plants; plant-microbe interactions; root infection
资金
- Swiss Federal Government (Agroscope Reckenholz-Tanikon)
- Swiss National Science Foundation [315230_130764/1]
- Swiss National Science Foundation (SNF) [315230_130764] Funding Source: Swiss National Science Foundation (SNF)
The arbuscular mycorrhizal (AM) symbiosis is widespread throughout the plant kingdom and important for plant nutrition and ecosystem functioning. Nonetheless, most terrestrial ecosystems also contain a considerable number of non-mycorrhizal plants. The interaction of such non-host plants with AM fungi (AMF) is still poorly understood. Here, in three complementary experiments, we investigated whether the non-mycorrhizal plant Arabidopsis thaliana, the model organism for plant molecular biology and genetics, interacts with AMF. We grew A.thaliana alone or together with a mycorrhizal host species (either Trifolium pratense or Lolium multiflorum) in the presence or absence of the AMFRhizophagus irregularis. Plants were grown in a dual-compartment system with a hyphal mesh separating roots of A.thaliana from roots of the host species, avoiding direct root competition. The host plants in the system ensured the presence of an active AM fungal network. AM fungal networks caused growth depressions in A.thaliana of more than 50% which were not observed in the absence of host plants. Microscopy analyses revealed that R.irregularis supported by a host plant was capable of infecting A.thaliana root tissues (up to 43% of root length colonized), but no arbuscules were observed. The results reveal high susceptibility of A.thaliana to R.irregularis, suggesting that A.thaliana is a suitable model plant to study non-host/AMF interactions and the biological basis of AM incompatibility.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据