Journal
FRONTIERS IN PLANT SCIENCE
Volume 11, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2020.563240
Keywords
transplantation mode; cultivation years; microbial community; microbial functions; rhizosphere soils
Categories
Funding
- China Agriculture Research System [CARS-21]
- Key project at central government level: the ability establishment of sustainable use for valuable Chinese Medicine Resources [2060302]
- Agricultural Science and Technology Innovation Program [CAAS-ASTIP-2016-ISAPS]
- Central Public-Interest Scientific Institution Basal Research Fund [1610342016018, 1610342016010, 1610342017017, 1610342017020, 1610342018011, 1610342018020, 1610342020004]
- Agricultural Science and Technology Innovation Program of CAAS [2018XTCX01, CAAS-XTCX20190025-6]
- Jilin Provincial Science and Technology Department [20160101350JC, 20170520084JH, 20191001021XH, 20200404013YY]
- National Natural Science Foundation of China [81903755]
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Transplantation is a cultivation mode widely applied in perennial plant growing. This method might be an effective way to alleviate problems associated with continuous cultivation (4-6 years) in ginseng production, but the alleviating mechanism and effects on soil microbial community is unclear. To study this issue, non-transplanted 2-year-old, and 5-year-old (transplantation mode: 2 + 3) and 9-year-old (transplantation mode: 3 + 3 + 3) ginseng rhizosphere soils were analyzed via MiSeq sequencing. The results showed that 9-year-old ginseng rhizosphere soil had lower available nitrogen and the lowest pH, available phosphorus, observed species and community diversity and richness (Chao1, and ACE) among all samples (p < 0.05). The abundances of some bacterial classes (Thermoleophilia, Bacilli, and Nitrospira) and fungal genera (Mortierella, Epicoccum, and Penicillium spp.) and functional richness associated with nutrient element cycles and antifungal activity decreased, while abundances of some fungal genera (Ilyonectria, Tetracladium, and Leptodontidium spp.) increased with increasing age of ginseng plants (p < 0.05 or p < 0.01). However, there was greater similarity between soil samples of 2-year-old and transplanted 5-year-old ginseng plants and the increase in cultivation time from 2 to 5 years did not significantly influence the microbial community, suggesting that transplantation is a viable strategy for suppressing soil-borne diseases in Panax ginseng plants over long growth periods.
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