Solanki, M.K.; Li, C.; Wang, F.; Wang, Z.; Lan, T.; Singh, R.K.; Singh, P.; Yang, L.; Li, Y. Linkages of Soil Nutrients and Diazotrophic Microbiome under Sugarcane-Legume Intercropping. Preprints2018, 2018100382. https://doi.org/10.20944/preprints201810.0382.v1
APA Style
Solanki, M.K., Li, C., Wang, F., Wang, Z., Lan, T., Singh, R.K., Singh, P., Yang, L., & Li, Y. (2018). Linkages of Soil Nutrients and Diazotrophic Microbiome under Sugarcane-Legume Intercropping. Preprints. https://doi.org/10.20944/preprints201810.0382.v1
Chicago/Turabian Style
Solanki, M.K., Li-Tao Yang and Yang-Rui Li. 2018 "Linkages of Soil Nutrients and Diazotrophic Microbiome under Sugarcane-Legume Intercropping" Preprints. https://doi.org/10.20944/preprints201810.0382.v1
Abstract
Intercropping significantly improves land use efficiency and soil fertility. This study examines the impact of three cultivation systems (monoculture sugarcane, peanut-sugarcane and soybean-sugarcane intercropping) on soil properties and diazotrophs. Sugarcane rhizosphere soil was sampled from the farmers’ field. Soil properties and nifH gene abundance were analyzed by high throughput sequencing. Moreover, a total of 436,458 nifH gene sequences were obtained and classified into the 3201 unique operational taxonomic units (OTUs). Maximum unique OTUs resulted with soybean-sugarcane intercropping (<375). The dominant groups across all cultivation were Alpha-proteobacteria and Beta-proteobacteria. On the basis of microbial community structure, intercropping systems were more diverse than monoculture sugarcane. In the genus level, Bradyrhizobium, Burkholderia, Pelomonas, and Sphingomonas were predominant in the intercropping systems. Moreover, diazotrophic bacterial communities of these cultivation systems were positively correlated to the soil pH and soil enzyme protease. Moreover, low available P recovered from intercropping system showed a strong correlation with higher nutrient uptake activity of soil microbes. Based on the results, our investigation concluded that intercropping system caused a positive effect on the growth of diazotrophic bacterial communities and it might boost the soil fertility and this kind of study helps to develop an eco-friendly technology for sustainable sugarcane production.
Keywords
intercropping; microbial community; high throughput sequencing; nifH gene; sugarcane
Subject
Biology and Life Sciences, Agricultural Science and Agronomy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
