Abstract The second-generation energy crop Miscanthus x giganteus (M. xgiganteus) is a perspective plant for phytoremediation of contaminated lands and the production of biomass. The excellent quality biomass can be ensured by adding soil amendments or inoculation of the plant by plant growth-promoting bacteria (PGPB). The main goal of the current study was to research the influence of PGPB Bacillus altitudinis strain KP-14 isolated from the post-mining aged contaminated soil in Vsebořice dump, Usti nad Labem to the phytoremediation parameters and biomass production of M. xgiganteus. The experiment was done in the greenhouse conditions using the initial aged soil contaminated by the following trace elements (TEs): V, Cr, Mn, Ni, Cu, Zn, Sr, Pb and the same aged soil, additionally artificially contaminated by Pb. The results showed that PGPB treatment increased the growth process and leaves, stems, and roots biomass at harvest by 49%, 86%, and 76%, respectively. In the presence of B. altitudinis strain KP-14, the translocation factor decreased, the uptake index of TEs remained low and the process can be classified as phytostabilization. The finding showed that the application of PGPB strain could be used in the sustainable production of M. xgiganteus at the TEs contaminated soil.

中文翻译：

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植物促生菌在芒草植物技术应用于微量元素污染土壤中的潜在作用

摘要 第二代能源作物芒草（M. xgiganteus）是一种用于污染土地植物修复和生物质生产的前景植物。通过添加土壤改良剂或接种植物生长促进菌 (PGPB) 可以确保优质的生物质。本研究的主要目标是研究从 Usti nad Labem 的 Vsebořice 垃圾场的采矿后老化污染土壤中分离的 PGPB Bacillus altitudinis 菌株 KP-14 对 M. xgiganteus 的植物修复参数和生物量产生的影响。实验是在温室条件下使用被以下微量元素 (TE) 污染的初始老化土壤进行的：V、Cr、Mn、Ni、Cu、Zn、Sr、Pb 和相同的老化土壤，另外还被 Pb 人为污染。结果表明，PGPB处理使收获时的生长过程和叶、茎和根生物量分别增加了49%、86%和76%。在 B. altitudinis 菌株 KP-14 存在下，易位因子降低，TEs 的吸收指数保持较低，该过程可归类为植物稳定。研究结果表明，PGPB菌株的应用可用于TEs污染土壤的巨型M. giganteus的可持续生产。