Title: Elymus sibiricus populations drive the community of root-associated arbuscular mycorrhizal fungi in a monoculture agroecosystem
Authors: Zhong Rui, Xie Wengang, Zhang Xingxu* Nan Zhibiao
Journal: Science China Life Sciences (生物一区, IF2018=3.583)
Abstract: Arbuscular mycorrhizal fungi (AMF) belonging to phylum Glomeromycota, form symbiotic associations with roots of over 80% of land plant species in terrestrial ecosystems (van der Heijden et al., 2015). A growing body of evidence shows that symbiotic AMF are important for plant growth and health (van der Heijden et al., 2015). A plant root is commonly associated with a complex AMF community in terrestrial ecosystems (Pivato et al., 2007; Davison et al., 2015; Mao et al., 2015). The diversity and composition of AMF in the roots of several model plants (Pivato et al., 2007) and crops (Mao et al., 2015) has been widely studied. The host plant is a key factor affecting the root-associated AMF community (RAMFC), and studies found that the effects of host plants on RAMFC could be operating on the levels of different species (Pivato et al., 2007), cultivars (Mao et al., 2015) and plant genotype (An et al., 2010). Elymus sibiricus is one of the most commonly distributed cool-season perennial grasses found in temperate regions and is becoming increasingly important as a forage grass to providing good quality forage for livestock (Chen and Jia, 2002). Some studies had been focused on the symbiotic association between forage plants in Elymus and AMF (Liu et al., 2012; Chu et al., 2016), and the presence of AMF in roots appears likely to improve the resistance of E. nutans to cold stress (Chu et al., 2016) and increase the biomass of this grass species (Yang et al., 2018). The present study was conducted to investigate, using sequencing technology, the potential host effects of E. sibiricus populations on the diversity of their RAMFC.