Garces Kylea R, Sage Haley E, Christian Natalie, Emery Sarah M
Department of Biology, University of Louisville, 139 Life Sciences Bldg, Louisville, KY 40292, USA.
J Fungi (Basel). 2022 Oct 28;8(11):1142. doi: 10.3390/jof8111142.
Plants harbor a variety of fungal symbionts both above- and belowground, yet little is known about how these fungi interact within hosts, especially in a world where resource availability is changing due to human activities. Systemic vertically transmitted endophytes such as spp. may have particularly strong effects on the diversity and composition of later-colonizing symbionts such as root fungal endophytes, especially in primary successional systems. We made use of a long-term field experiment in Great Lakes sand dunes to test whether colonization of the dune-building grass, , could alter fungal root endophyte species richness or community composition in host plants. We also tested whether nitrogen addition intensified the effects of on the root endophyte community. We found that increased richness of root endophytes in by 17% overall, but only shifted community composition of root endophytes under nitrogen-enriched conditions. These results indicate that acts as a key species within , changing richness and composition of the root mycobiome and integrating above- and belowground mycobiome interactions. Further, effects of on root endophyte communities were enhanced by N addition, indicating that this fungal species may become even more important in future environments.
植物在地上和地下都拥有各种各样的真菌共生体，但对于这些真菌在宿主内部如何相互作用，我们知之甚少，尤其是在一个由于人类活动导致资源可用性不断变化的世界中。像 spp. 这样的系统性垂直传播内生菌可能对诸如根真菌内生菌等后来定殖的共生体的多样性和组成产生特别强烈的影响，尤其是在原生演替系统中。我们利用在大湖沙丘进行的一项长期野外实验，来测试沙丘建造草的定殖是否会改变宿主植物中真菌根内生菌的物种丰富度或群落组成。我们还测试了添加氮是否会增强对根内生菌群落的影响。我们发现总体上使中的根内生菌丰富度增加了17%，但仅在富氮条件下改变了根内生菌的群落组成。这些结果表明在中充当关键物种，改变了根真菌群落的丰富度和组成，并整合了地上和地下真菌群落的相互作用。此外，添加氮增强了对根内生菌群落的影响，表明这种真菌物种在未来环境中可能会变得更加重要。
