Fungal diversity driven by bark features affects phorophyte preference in epiphytic orchids
作者单位：School of Pharmaceutical Science and TechnologyTianjin University Institute for Geoscience and Nature ManagementUniversity of Copenhagen State Key Laboratory of MycologyInstitute of MicrobiologyChinese Academy of Sciences Natural History Museum of DenmarkUniversity of Copenhagen
会议名称：《中国菌物学会2023年学术年会》
会议日期：2023年
摘 要：Epiphytic orchids exhibit varying degrees of phorophyte tree *** orchid species show a strong phorophyte preference,while other species associate with a broad range of tree *** trees that carry epiphytic orchids play a crucial role in orchid life cycle,little is known about this phorophyte-epiphyte *** performed a pilot study to investigate why epiphytic orchids prefer or avoid certain *** question becomes more puzzling when the preferred trees differ among epiphytes that seem to mutually exclude each other,within the same *** this reason,we selected two orchid species,Panisea uniflora and Bulbophyllum odoratissimum co-occurring in a forest habitat in southern China,where they showed a specific association with Quercus yiwuensis and Pistacia weinmannifolia trees,*** analysed a number of environmental factors potentially influencing the relationship between orchids and trees,including bark and orchid root fungal *** in bark features,such as water holding capacity and pH were recorded between *** and ***,which could influence both orchid seed germination and fungal diversity on the two *** and molecular culture-based methods,combined with metabarcoding analyses,were used to assess fungal communities associated with studied orchids and trees.A total of 162 fungal species in 74 genera were isolated from bark *** two genera,Acremonium and Verticillium,were shared by the two phorophyte *** analysis confirmed the presence of significantly different fungal communities on the investigated tree and orchid species,with considerable similarity between each orchid species and its host tree,suggesting that the orchid-host tree association is influenced by the fungal communities of the host tree bark.