Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Phyllosphere fungi diversity of a native species Desmodium spicatum and an invasive species Tithonia rotundifolia.

Abstract

Through DNA extraction, PCR amplification and DNA sequencing, the conservative 18S rRNA sequences of phyllosphere fungi from leaves of Tithonia rotundifolia and Desmodium spicatum were analyzed. The results showed that both plant species shared some common fungi species from the subclass of Chaetothyriomycetes and Heterobasidiomycete, although fungi diversity found on the leaves of Desmodium spicatum was far less when this plant was near the invader plant Tithonia rotundifolia than away from it. Also, both plant species hosted some species-specific fungi species. In particular, invader Tithonia rotundifolia hosted Graphiola phoenicis, a notorious fungi species for its damage on plant growth and development, which might facilitate the invasion success of Tithonia rotundifolia by inhibiting native plants. Our results thus showed that phyllosphere fungi were diverse in both richness and function for invader plant Tithonia rotundifolia and native plant Desmodium spicatum, and future study should further explore the interactions between phyllosphere microbes and host plants as well as involving mechanisms.