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Chinese Journal of Applied Ecology ›› 2021, Vol. 32 ›› Issue (11): 4095-4106.doi: 10.13287/j.1001-9332.202111.033

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Seasonal variations of arbuscular mycorrhizal fungal community in greenhouse soil under different rotation systems

LIU Lei1, XU Meng2, ZHANG Guo-yin1, WANG Ling1, SUN Shi-you1, RU Shu-hua1, XIAO Guang-min1, GAO Jing1, LI Pin1, MA Li-min1*   

  1. 1Institute of Agricultural Resources and Environment, Hebei Academy of Agriculture and Forestry Sciences/Hebei Fertilizer Technology Innovation Center, Shijiazhuang 050051, China;
    2Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
  • Online:2021-11-15 Published:2022-05-15
  • Supported by:
    This work was supported by the National Key Research and Development Project (2017YFD0800404) and the Doctoral Program Foundation of Hebei Academy of Agricultural and Forestry Sciences.

Abstract: Soil samples were collected at the fallow period, flowering stage, and fruiting stage of tomato under tomato-melon (TM) and tomato-bean (TB) systems. Illumina MiSeq high-throughput pyrosequencing was performed to analyze the differences in AM fungal community between the two rotation systems. We further analyzed the key factors driving the changes in AM fungal diversity and community composition. Results showed that rotation with legume significantly altered the α-diversity of AM fungi. Shannon diversity and Pielou evenness of AM fungi under the TB system were 24.9% and 24.0% lower than that under TM system, respectively. Compared to the fallow period, richness, Shannon diversity, and phylogenetic diversity of AM fungi at the tomato flowering and fruiting stages decreased significantly by 55.6%-67.5%, 49.6%-51.5%, and 21.4%-23.7%, respectively. Rotation with legume (the TB system) promoted the relative abundance of Glomus in all the three sampling times, but reduced the relative abundance of Paraglomus and Archaeospora at the flowering and fruiting stages. Claroideoglomus was more abundant in soils under the TM system than that under the TB system at the fallow period, but the pattern was the opposite at the flowering stage. Ambispora, Diversispora, and Scutellospora were detected only in soil under the TB system. Results of permutational multivariate analysis of variance (PERMANOVA) and non-metric multidimensional scaling (NMDS) analysis showed that both rotation system and growing stage significantly affected the structure of AM fungal community. Soil moisture, pH, and Olsen-P were the predominant factors controlling the variations in the diversity and composition of AM fungal community. Results of structural equation modeling (SEM) further indicated that rotation system and growing stage affected the variations in AM fungal diversity and community structure indirectly via changing soil pH.

Key words: arbuscular mycorrhiza fungi, high-throughput pyrosequencing, rotation with legumes, structural equation model, tomato.