Department of Tobacco Cultivation, College of Tobacco Science, Henan Agricultural University, Henan Province, Zhengzhou, 450002, China.
Henan Biochar Engineering Technology Research Center, Zhengzhou, 450002, China.
Curr Microbiol. 2020 Jun;77(6):931-942. doi: 10.1007/s00284-020-01895-7. Epub 2020 Jan 25.
The soil organic carbon is associated with the plant quality and the microbial community structure. In the present study, carbon fertilizers were applied to paddy soil to elucidate the relationship between soil carbon and neutral aroma substances in both tobacco and soil microbiome by transcriptome sequencing and 16S rDNA-based analysis, respectively. Our results showed that (1) the increase in soil carbon content was closely correlated with the abundance of microorganisms belonging to two classes (which could potentially affect tobacco plants), namely Gammaproteobacteria and Chloroflexia, (2) soil carbon apparently affected tobacco neutral aroma substances, and (3) soil carbon improved neutral aroma substances by affecting the transcriptional processes of sesquiterpenoid and chlorophyll biosyntheses. These results suggest that increased soil carbon-especially active organic carbon-resulted in desirable improvements in aroma substances in tobacco leaves.
土壤有机碳与植物质量和微生物群落结构有关。本研究通过转录组测序和基于 16S rDNA 的分析，分别向稻田土壤中添加了碳素肥料，以阐明土壤碳与烟草和土壤微生物组中的中性香气物质之间的关系。结果表明：(1)土壤碳含量的增加与属于两个类群（可能影响烟草植物）的微生物丰度密切相关，即γ变形菌纲和绿弯菌门；(2)土壤碳明显影响烟草中性香气物质；(3)土壤碳通过影响倍半萜和叶绿素生物合成的转录过程来改善中性香气物质。这些结果表明，土壤碳的增加——特别是活性有机碳——导致烟草叶片中香气物质的理想改善。
