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| Seasonal Variation of Soil Nutrients and Fungal Community Structure in Rhizosphere of Susceptible and Non-susceptible Pinus sylvestris var. mongolica Plantations |
| SAIYAREMU Halifu1，2，DENG Xun3，SONG Xiaoshuang3，SONG Ruiqing2** |
| 1. College of Agronomy，Shihezi University，Shihezi 832000，China；2. College of Forestry，North?
east Forestry University，Harbin 150000，China；3. Institute of Forestry Protection，Heilongjiang
Forestry Academy，Harbin 150000，China |
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Abstract Pinus sylvestris var. mongolica has the characteristics of strong resistance and fast growth,
which plays an important role in sand control project in north China. In recent years, the changes of
environmental conditions have led to the weakening of the growth of P. sylvestris var. mongolica plan?
tation in Zhanggutai area, Liaoning province, and the serious occurrence of shoot blight disease. In
this study, the physical and chemical properties of rhizosphere soil, the variation of fungal commu?
nity structure and the effects of soil physical and chemical properties on fungal community structure
of susceptible and non-susceptible P. sylvestris var. mongolica plantations in Zhanggutai area of Lia?
oning Province were analyzed by high-throughput sequencing and qPCR technology. The results
showed that at phylogenetic level, Ascomycota, Basidiomycota, Mortierellomycota and Fungiunclassified were the main flora. There were significant differences in the abundance of ck soil
samples and ss soil samples(P<0.05). There were 30 genera with different abundance at genus classi?
fication level. The content of 30 genera in ck soil samples was significantly higher than that in ss
soil samples(P<0.05), all of which are mycorrhizal fungi, dark septal fungi, Trichoderma and other
probiotics. RDA analysis showed that pH, OM, TN, NH4
+
, NO3
-
, AP, TP, AK and TK were the main
environmental factors affecting the fungal community structure in spring and summer, and 30 gen?
era with significant differences were the main factors affecting the microbial community structure
in autumn.
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Received: 01 June 2020
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