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Diversity of Cultivable Bacterial Populations Provides Evidence for Tobacco-crop Rotations in Alleviating Continuous Cropping Obstacles

文献类型： 外文期刊

作者： Liu, Xin 1 ; Zhang, Yijie 2 ; Chen, Yan 2 ; He, Biao 3 ; Shi, Zhufeng 2 ; Han, Tianhua 3 ; He, Feifei 1 ; Luo, You 3 ; Shi, Zhuli 1 ; Wang, Yu 1 ; Li, Xuewei 3 ; Yang, Peiwen 2 ;

作者机构： 1.Yunnan Univ, Sch Agr, Kunming 650500, Peoples R China

2.Yunnan Acad Agr Sci, Agr Environm & Resources Inst, Kunming 650205, Peoples R China

3.Yunnan Tobacco LiJiang Spice Tobacco Co Ltd, Lijiang 674100, Peoples R China

关键词： flue-cured tobacco; rotation; soil quality

期刊名称：CHIANG MAI JOURNAL OF SCIENCE （ 影响因子：0.8； 五年影响因子：0.7 ）

ISSN： 0125-2526

年卷期： 2025 年 52 卷 2 期

页码：

收录情况： SCI

摘要： Degradation of soil quality, imbalanced microbial community , and reduced crop yields due to continuous cropping are prevalent issues in tobacco agriculture. Rotation is an effective strategy to alleviate these problems. Therefore, this study used flue-cured tobacco monoculture (CK) as a control and set up three treatments: faba bean (YCCD), barley (YCDM), and garlic (YCDS). Various culture media, including NA, LB, PCA, R2A, and modified Gao's I media, along with Illumina MiSeq high- throughput sequencing, were employed to investigate the impact of these crop rotation patterns on the soil cultivable bacterial community. The results showed that the Ace, Chao1, and Shannon indices were significantly higher in the YCDM treatment (P<0.05). Crop rotation significantly increased the relative abundance of beneficial bacteria, such as Pandoraea, Sporosarcina, and Serratia, as well as the relative abundance of nitrogen, phosphorus, and sulfur cycling genes. Soil pH, organic matter, total phosphorus, available nitrogen, total potassium, and available potassium content were identified as key factors influencing bacterial community structure. In conclusion, different rotation patterns regulate the bacterial community involved in nitrogen, phosphorus, and sulfur cycling by affecting soil pH and nutrient content. The enrichment of cultivable bacterial communities helps mitigate soil degradation and ultimately enhances crop yields.

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