Effects of different vegetable rotations on the rhizosphere bacterial community and tomato growth in a continuous tomato cropping substrate

被引:11
作者
Jin, Li [1 ]
Lyu, Jian [1 ,2 ]
Jin, Ning [1 ]
Xie, Jianming [1 ]
Wu, Yue [1 ]
Zhang, Guobin [1 ]
Feng, Zhi [1 ]
Tang, Zhongqi [1 ]
Liu, Zeci [1 ]
Luo, Shilei [1 ]
Yu, Jihua [1 ,2 ]
机构
[1] Gansu Agr Univ, Coll Hort, Lanzhou, Peoples R China
[2] Key Lab Crop Sci Arid Environm Gansu Prov, Lanzhou, Peoples R China
来源
PLOS ONE | 2021年 / 16卷 / 09期
关键词
MICROBIAL COMMUNITIES; SOIL; DIVERSITY; PHOTOSYNTHESIS; CUCUMBER; TILLAGE; DISEASE; SYSTEMS; TOOLS;
D O I
10.1371/journal.pone.0257432
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In this study, High throughput sequencing was used to analyze the effects of different vegetable rotations on the rhizosphere bacterial diversity and community structure in a substrate that was used for continuous tomato cropping (CK). The vegetable rotations tested were cabbage/tomato (B), kidney bean/tomato (D), and celery/tomato (Q). The results revealed that the substrate bacterial diversity and richness of each crop rotation were higher than those of CK. The highest bacterial diversity was found in the B substrate, followed by the Q and D substrates. Further comparison showed that the rhizosphere bacterial community structure of Q substrate was significantly different to that of CK. Compared with the CK, the Q substrate had a significantly higher relative abundance of several dominant microflora, such as Acidobacteria, Chloroflexi, and Firmicutes. Additionally, the Q rotation significantly increased the abundance of beneficial bacteria, such as Actinobacteria_unclassified and Anaerolineaceae_unclassified. A redundancy analysis showed that Most dominant bacteria correlated positively with the substrate pH, total N, and alkali-hydrolyzable N but negatively with the available P, available K, total P, total K, and organic matter contents and substrate EC. The substrates after crop rotation improved the growth and physiological condition of the subsequent tomato plants, among which those from the Q rotation performed the best. Therefore, celery rotation not only increased the richness and diversity of bacterial communities in the substrate but also significantly increased the richness of the beneficial bacterial communities, allowing better maintenance of the substrate microenvironment for the healthy growth of crops.
引用
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页数:16
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