Abstract: A number of fungi inhabit the phyllosphere, which accompany plants during their whole life history. The habitats of plants at different stages regulate the structure, composition and diversity of fungal community, which has been widely concerned. In northwestern Yunnan Province, we collected plant samples from a typical emergent wetland plant, Schoenoplectus tabernaemontani, during the growth stage (A), standingdead stage (B), lodging stage (C), and submergence stage (D), and sediment samples (E) as a control. We extracted DNA after ultrasonic water bathing combined with vigorous shake methods, and sequenced ITS fragments using Illumina HiSeq platform to obtain the composition and abundance information of the phyllospheric fungi community. With the growth, withering and death of S. tabernaemontani, the α and β diversity of phyllospheric fungal community significantly increased, and the complexity of community structure enhanced. The heterogeneity among different samples increased and the difference in community composition gradually enlarged during the whole process. At the genus level, Alternaria and Cryptococcus were the dominant ones during growth stage and standingdead stage, while Gibberella and Phialophora gradually invaded into the phyllosphere and became the dominant one accompanied with plants in their lodging and submergence stages. Only 22 common OTUs were found in the samples A, B, C, and D, while 99 OTUs were shared by submergence stage and sediment, indicating that the phyllospheric fungal community tended to be consistent with the soil fungal community along with the plant death process. Our results reveal the succession of fungal community during plant life history, providing theoretical supports for further study on the underlying mechanisms shaping phyllospheric fungal community structure in wetland plants.

Key words: ecological environment elements, land consolidation, ecological landscape, ecosystem services, ecological land consolidation.