| The structure and diversity of soil fungi play important role to plant growth. Understanding of the soil fungal community structure and diversity with different planting life is of important significance for the study on lavender disease control and increase production. Structure and diversity characteristics of fungal communities in soils of Lavandula angustifolia with different planting life were studied. The samples were collected from L. angustifolia soils planting life for one year, three years, five years, and soils have not yet planted with lavender in Hunching county, Yili, Xinjiang. Illumine high-throughput sequencing of ITS sequences were used to compare the association of fungal diversity and community distribution axiom of the different sample groups with planting life. Alpha diversity analysis showed that Shannon index gradually reduced as the planting life increased, Chao1 index decreased then increased. The fungal communities totally were detected 12 phyla, 28 classes, 72 orders, 146 families, and 236 genera. Ascomycota, Basidiomycota and Glomeromycota were the dominant fungal phyla. Concomitant with the increment of planting life the relative abundances of Ascomycota gradually decreased, the relative abundances of Basidiomycota gradually increased, and the relative abundances of Glomeromycota increased first and then decreased with continuous increment of planting life. At genus level the dominant genera were Xylodon, Oxyporus, Fusarium and Cladosporium belong to plant pathogens. And following the planting life increased, the relative abundances of Xylodon decreased, but the relative abundances of Oxyporus, Fusarium and Cladosporium increased with the increment of planting life. The OTU number of Glomus the most dominant arbuscular mycorrhizal fungi (AMF) reduced gradually with continuous planting life. The continuous planting of L. angustifolia changed fungal community structure, fungal community diversity, increased plant pathogens, and reduced AMF. The research provide theoretical basis for pathogen control and yield increase of lavender, and provided reference basis for lavender soil management. |
