Liu Yue, Yang Huichun, Liu Qi, Zhao Xiaowen, Xie Sasa, Wang Ziting, Wen Ronghui, Zhang Muqing, Chen Baoshan
Guangxi Key Laboratory of Sugarcane Biology, Nanning, China.
College of Agronomy, Guangxi University, Nanning, China.
Front Microbiol. 2021 Jan 14;11:596472. doi: 10.3389/fmicb.2020.596472. eCollection 2020.
Intercropping of soybean and sugarcane is an important strategy to promote sustainable development of the sugarcane industry. In fact, our understanding of the interaction between the rhizosphere and bacterial communities in the intercropping system is still evolving; particularly, the influence of different sugarcane varieties on rhizosphere bacterial communities in the intercropping process with soybean, still needs further research. Here, we evaluated the response of sugarcane varieties ZZ1 and ZZ9 to the root bacterial community during intercropping with soybean. We found that when ZZ9 was intercropped with soybean, the bacterial diversity increased significantly as compared to that when ZZ1 was used. ZZ9 played a major role in changing the bacterial environment of the root system by affecting the diversity of rhizosphere bacteria, forming a rhizosphere environment more conducive to the growth of sugarcane. In addition, our study found that ZZ1 and ZZ9 had differed significantly in their utilization of nutrients. For example, nutrients were affected by different functional genes in processes such as denitrification, P-uptake and transport, inorganic P-solubilization, and organic P-mineralization. These results are significant in terms of providing guidance to the sugarcane industry, particularly for the intercropping of sugarcane and soybean in Guangxi, China.
大豆与甘蔗间作是促进甘蔗产业可持续发展的一项重要策略。事实上，我们对间作系统中根际与细菌群落之间相互作用的理解仍在不断发展；特别是不同甘蔗品种在与大豆间作过程中对根际细菌群落的影响，仍需进一步研究。在此，我们评估了甘蔗品种ZZ1和ZZ9在与大豆间作期间对根系细菌群落的响应。我们发现，当ZZ9与大豆间作时，与使用ZZ1时相比，细菌多样性显著增加。ZZ9通过影响根际细菌的多样性在改变根系细菌环境方面发挥了主要作用，形成了一个更有利于甘蔗生长的根际环境。此外，我们的研究发现ZZ1和ZZ9在养分利用方面存在显著差异。例如，养分在反硝化作用、磷吸收与转运、无机磷溶解和有机磷矿化等过程中受到不同功能基因的影响。这些结果对于指导甘蔗产业具有重要意义，特别是在中国广西的甘蔗与大豆间作方面。
