Zhuang Jiayao, Liu Chao, Wang Xiaoxue, Xu Tongxin, Yang Hao
Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Nanjing, China.
Front Microbiol. 2021 Sep 28;12:738734. doi: 10.3389/fmicb.2021.738734. eCollection 2021.
It is found effective for phytoremediation of the guest soil spraying method by adding microbes to promote the growth of arbor leguminous plant on a high and steep rock slope. However, its underlying mechanisms remain elusive. Here, some experiments were conducted to explore the multifunctions of NL-Z1 on rock weathering, nodule growth, and beneficial microbial regulation. The results show that NL-Z1 significantly increased the release of phosphorus, potassium, calcium, and magnesium from the rock by 226, 29, 24, and 95%, respectively, compared with that of the control. A significant increase of 153% in nodule biomass, accompanied by an increase of 37% in the leguminous plant biomass was observed in the NL-Z1 treatment than in the control treatment. Interestingly, even though NL-Z1 itself became a minor microbial community in the soil, it induced a significant increase in , which, as a beneficial microbe, can promote phosphate-solubilizing and plant growth. The results suggest that NL-Z1 could induce an imposed effect to promote leguminous plant growth, which may be conducive to the development of the phytoremediation technique for high and steep rock slope. The study provides a novel thought of using the indirect effect of microbes, i.e., promoting other beneficial microbes, to improve soil environment.
研究发现，通过向高陡岩石边坡的客土中添加微生物以促进豆科乔木植物生长的客土喷洒法具有植物修复效果。然而，其潜在机制仍不清楚。在此，进行了一些实验以探究NL-Z1在岩石风化、根瘤生长和有益微生物调控方面的多种功能。结果表明，与对照相比，NL-Z1使岩石中磷、钾、钙和镁的释放量分别显著增加了226%、29%、24%和95%。与对照处理相比，NL-Z1处理的根瘤生物量显著增加了153%，同时豆科植物生物量增加了37%。有趣的是，尽管NL-Z1本身在土壤中成为了一个较小的微生物群落，但它诱导了作为有益微生物的显著增加，其可促进磷溶解和植物生长。结果表明，NL-Z1可诱导一种促进豆科植物生长的作用，这可能有利于高陡岩石边坡植物修复技术的发展。该研究提供了一种利用微生物间接作用（即促进其他有益微生物）来改善土壤环境的新思路。
