Bacteria and Fungi in Green Roof Ecosystem. The interactions between plant species in green roofs and Mycorrhizal Fungi, Decomposers, Nitrogen-Fixing Bacteria, Endophytic Fungi, Pathogens, and the interactions between different kinds of microbes.
by Xu Zhuqing
1. interactions between vegetation and microbes
1.1. Green roof provides the habitat for organisms
1.2. Many of them provide beneficial effect, while some have negative effect like pathogens
2. interactions between different microbes
2.1. N-fixing bacteria may have indirect negative effects on plant pathogens because when N is high and not a limiting factor for plant growth, plants will synthesize and store high levels of nitrogen-rich compounds to aid in future defense mechanisms.
2.2. Mutualistic microbes such as N-fixing bacteria and mycorrhizal fungi may also negatively impact pathogens, as they contribute to plant defense by pro- ducing antagonistic molecules on the plant interior and can modify the expression of plant defense pathways
