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Chinese Journal of Applied Ecology ›› 2021, Vol. 32 ›› Issue (12): 4254-4262.doi: 10.13287/j.1001-9332.202112.031

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Effect of cropping patterns onbacterial community diversity and metabolic function in rhizosphere soil of Angelica sinensis

JIANG Xiao-feng1,2, GUO Feng-xia1*, CHEN Yuan1, GUO Jian-guo2, LIU Xiao-feng1   

  1. 1College of Life Science and Technology/College of Agronomy/Gansu Provincial Key Laboratory of Aridland Crop Science/Gansu Provincial Key Laboratory of Good Agricultural Production for Traditional Chinese Medicines/Gansu Provincial Engineering Research Centre for Medical Plant Cultivation and Breeding,Gansu Agricultural University, Lanzhou 730070, China;
    2Dryland Agriculture Institute/Institute of Plant Protection, Gansu Academy of Agricultural Sciences,Lanzhou 730070, China
  • Received:2021-05-07 Revised:2021-08-27 Online:2021-12-15 Published:2022-06-15
  • Contact: *E-mail: guofx@gsau.edu.cn
  • Supported by:
    Gansu Academy of Agricultural Sciences Science and Technology Innovation Special Project (Research and Demonstration on Green and Efficient Cultivation Model of Angelica sinensis 2021GAAS11) , the National Natural Science Foundation of China (31560175, 31360317, 31460547), the Chief Expert Project of Modern Agricultural Traditional Chinese Medicine Industry System in Gansu Province (GARS-ZYC-1), the National Standardization Project of Traditional Chinese Medicine of China (ZYBZH-Y-GS-11), and Innovation Training Program for College Students (201810733232, 20150802, 20160802, 20170924)

Abstract: The sustainable development of Angelica sinensis industry is seriously restricted by continuous cropping obstacles. In order to explore an efficient cultivation technique for A. sinensis, an experiment with five cropping patterns [A: Pisum sativum (Ps)-A. sinensis (As)-As, control); B: Ps-Triticum aestivum (Ta)-As; C: Ps-Mongolia astragalus (Ma)-As; D: Ps-Solanum tuberosum (St)-As); E: Ps-Fallow (F)-As)] were conducted in major A. sinensis producing areas located in Weiyuan County, Gansu Province. The physicochemical properties and relative abundance of bacterial genomic DNA in rhizosphere soil under different cropping patterns were measured during A. sinensis harvest period to investigate the effects of different cropping patterns on physicochemical properties, bacterial community diversity, and metabolic pathways. The results showed that: 1) the physicochemical properties in A. sinensis rhizosphere soil varied among different cropping patterns. Compared with the control, soil electrical conductivity under C pattern was significantly higher, and lower under B, D and E, CO2 respiration rate for B, C, D and E were significantly increased. 2) Soil bacteria of A. sinensis rhizosphere soil in the five cropping patterns belonged to 26 phyla and 368 genera. The dominant genera were Gemmatimonas from Gemmatimonadetes, Sphingomonas from Proteobacteria, and Subgroup_6 from Acidobacteria. Compared with the control, the relative abundance of Proteobacteria and Actinobacteria under B and C patterns was significantly higher, Acidobacteria in D pattern was significantly lower, while Proteobacteria, Acidobacteria, and Actinobacteria in E pattern was significantly higher. 3) There were significantly negative relations between soil pH, electrical conductivity, contents of organic matter, available nitrogen, phosphorus and potassium with the relative abundance of Proteobacteria in A. sinensis rhizosphere soil across the five cropping patterns. 4) There was significant difference in relative abundance for bacteria of six metabolic pathways under the five cropping patterns. In conclusion, C pattern had a regulating effect on physicochemical properties and bacterial communities in A.sinensis rhizosphere soil, which could be taken as a major practice to overcome the continuous cropping obstacles.

Key words: cropping patterns, Angelica sinensis, rhizosphere soil, physicochemical properties, bacteria communities, metabolic pathways