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Floral fungal-bacterial community structure and co-occurrence patterns in four sympatric island plant species
Fungal Biology ( IF 2.9 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.funbio.2020.10.004 Xin Qian 1 , Xiaojuan Li 2 , Hanzhou Li 3 , Dianxiang Zhang 4
Fungal Biology ( IF 2.9 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.funbio.2020.10.004 Xin Qian 1 , Xiaojuan Li 2 , Hanzhou Li 3 , Dianxiang Zhang 4
Affiliation
Flowers' fungal and bacterial communities can exert great impacts on host plant wellness and reproductive success-both directly and indirectly through species interactions. However, information about community structure and co-occurrence patterns in floral microbiome remains scarce. Here, using culture-independent methods, we investigated fungal and bacterial communities associated with stamens and pistils of four plant species (Scaevola taccada, Ipomoea cairica, Ipomoea pes-caprae, and Mussaenda kwangtungensis) growing together under the same environment conditions in an island located in South China. Plant species identity significantly influenced community composition of floral fungi but not bacteria. Stamen and pistil microbiomes did not differ in community composition, but differed in co-occurrence network topological features. Compared with the stamen network, pistil counterpart had fewer links between bacteria and fungi and showed more modular but less concentrated and connected structure. In addition, degree distribution of microbial network in each host species and each microhabitat (stamen or pistil) followed a significant power-law pattern. These results enhance our understanding in the assembly principles and ecological interactions of floral microbial communities.
更新日期：2021-01-01
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