文献类型： 外文期刊

作者： Pang, Ziqin ¹ ; Fallah, Nyumah ¹ ; Weng, Peiying ² ; Zhou, Yongmei ² ; Tang, Xiumei ⁵ ; Tayyab, Muhammad ¹ ; Liu, Yueming ¹ ; Liu, Qiang ¹ ; Xiao, Yijie ¹ ; Hu, Chaohua ¹ ; Kan, Yongjun ³ ; Lin, Wenxiong ² ; Yuan, Zhaonian ¹ ;

作者机构： 1.Fujian Agr & Forestry Univ, Minist Agr, Key Lab Sugarcane Biol & Genet Breeding, Fuzhou, Peoples R China

2.Fujian Agr & Forestry Univ, Coll Agr, Fuzhou, Peoples R China

3.Fujian Agr & Forestry Univ, Coll Life Sci, Fujian Prov Key Lab Agroecol Proc & Safety Monito, Fuzhou, Peoples R China

4.Fujian Agr & Forestry Univ, Key Lab Crop Ecol & Mol Physiol, Fuzhou, Peoples R China

5.Guangxi Acad Agr Sci, Cash Crops Res Inst, Nanning, Peoples R China

6.Guangxi Univ, Prov & Minist Cosponsored Collaborat Innovat Ctr, Nanning, Peoples R China

关键词： sugarcane; intercropping; endosphere; rhizosphere and non-rhizosphere soil; bacterial diversity and abundance

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：6.064； 五年影响因子：6.843 ）

ISSN：

年卷期： 2022 年 12 卷

页码：

收录情况： SCI

摘要： Sugarcane-legume intercropping systems can effectively control pests and diseases as well as improve the fertility and health of farmland soil. However, little is known about the response of bacterial abundance, diversity, and community composition in the rhizosphere and non-rhizosphere soils under the sugarcane-peanut farming system. A field experiment was conducted with two treatments: sugarcane monoculture and sugarcane-peanut intercropping to examine the response of sugarcane parameters and edaphic factors. We also deciphered bacterial abundance, diversity, and community composition in the root endosphere, rhizosphere, and bulk soil by leveraging Illumina sequencing to conduct the molecular characterization of the 16S rRNA gene and nitrogenase (nifH) gene. We observed that sugarcane-peanut intercropping exhibited the advantages of tremendously increasing cane stalk height, stalk weight, and millable stalk number/20 m, and edaphic factors, namely, pH (1.13 and 1.93), and available phosphorus exhibited a fourfold and sixfold increase (4.66 and 6.56), particularly in the rhizosphere and bulk soils, respectively. Our result also showed that the sugarcane-peanut intercropping system significantly increased the bacterial richness of the 16S rRNA gene sequencing data by 13.80 and 9.28% in the bulk soil and rhizosphere soil relative to those in the monocropping sugarcane system, respectively. At the same time, sugarcane intercropping with peanuts significantly increased the Shannon diversity of nitrogen-fixing bacteria in the sugarcane rhizosphere soil. Moreover, most edaphic factors exhibited a positive regularity effect on bacterial community composition under the intercropping system. A linear discriminant analysis with effect size analysis of the 16S rRNA sequencing data revealed that bacteria in the root endosphere of the intercropped cane proliferated profoundly, primarily occupied by Devosia, Rhizobiales, Myxococcales, Allorhizobium-Neorhizobium-Pararhizobium-Rhizobium, Bradyrhizobium, and Sphingomonas. In conclusion, our findings demonstrated that sugarcane-peanut intercropping can enhance edaphic factors, sugarcane parameters, and bacterial abundance and diversity without causing adverse impacts on crop production and soil.