施钙对酸性红壤花生根系内生细菌群落结构的影响 |
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基金项目: | National Research and Development Program of China(2018YFD1000900) |
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摘 要: |
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收稿时间: | 2020-04-02 |
Effects of calcium application on the structural diversity of endophytic bacterial community in peanut roots under acidic red soil cultivation |
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Authors: | ZHANG Wei HONG Yan-Yun LIU Deng-Wang ZHANG Bo-Wen YI Tu-Yong LI Lin |
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Institution: | 1.College of Plant Protection, Hunan Agricultural University / Hunan Provincial Key Laboratory for Biology and Control of Plant Pests, Changsha 410128, Hunan, China;2.Institute of Dryland Crops of Hunan Agricultural University, Changsha 410128, Hunan, China |
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Abstract: | Peanut is an important economic crop and calcium-loving crop in China. In order to explore the effect of calcium application on the diversity of endophytic bacteria in peanut roots planted in acid red soil, the genomes of endophytic bacteria in peanut roots of different treatments and different growth stages were deeply sequenced by 16SrRNA gene V3-V4 region, and the root microbial community structure of peanut plants planted in acid red soil and control was analyzed. The results showed that Klebsiella and Enterobacter were the dominant genera with high relative abundance in the endophytic bacterial community from all sample groups. The relative abundance of Pseudomonas and Lysinibacillus were significantly higher than that from the control group, while the relative abundance of Ralstonia decreased significantly in the calcium application groups during the pod-pin stage at P ≤ 0.05. The interaction network analysis showed that the connection of root endophytic bacterial in calcium application group was relatively close. We reasonably inferred that the composition of peanut root endophytic bacterial community was affected by calcium application and plant growing development. Calcium application could change the community structure and improve the ability of peanut to cope with external stress. This study may lay a foundation for improving the quality of acid soil and improving the disease resistance of peanut by applying calcium in the future. |
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Keywords: | peanut calcium acid red soil endophytic bacteria microbial diversity |
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