Zhang Linlin, Jin Qiao, Guan Yiming, Liu Zhengbo, Pan Xiaoxi, Zhang Yue, Zhang Yayu, Wang Qiuxia
Institute of Special Wild Economic Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China.
Jilin Provincial Key Laboratory of Traditional Chinese Medicinal Materials Cultivation and Propagation, Changchun, China.
Front Microbiol. 2024 Jan 31;15:1283492. doi: 10.3389/fmicb.2024.1283492. eCollection 2024.
Ginseng ( C.A. Meyer) has multiple effects on human health; however, soil degradation seriously affects its yield. spp. play an important role in improving plant biomass by influencing the soil environment. Therefore, it is necessary to screen efficient strains that can increase ginseng biomass and determine their mechanisms.
Herein, we selected six species (, , , , , and ) isolated from ginseng rhizosphere soil, and evaluated their growth promoting effects on ginseng and their influence on the microbiome and chemical attributes of the ginseng rhizosphere soil.
Except for (F), compared with the control, the other five species increased ginseng biomass. In terms of chemical properties, the pH value, available potassium content, and available phosphorus content in the ginseng rhizosphere soil increased by 1.16-5.85%, 0.16-14.03%, and 3.92-38.64%, respectively, after root irrigation with spores of species. For the soil microbiome, fungal Chao1 and Ace richness indices decreased. Application of enhanced the relative level of , but reduced the relative level of . At the genus level, application of enhanced the relative levels of , and , but reduced the relative level of . Available K and available P were the most important elements that affected the structure of the bacterial community, while total K was the most influential element for the structure of the fungal community structure.
The results indicated that the application of spp. could increase soil nutrients and regulate the structure and composition of the soil microbial community, thereby enhancing the biomass of ginseng. The results will provide guidance for soil improvement in ginseng cultivation.
人参（C.A. 迈耶）对人体健康有多种功效；然而，土壤退化严重影响其产量。某些物种通过影响土壤环境在提高植物生物量方面发挥重要作用。因此，有必要筛选出能够增加人参生物量的高效菌株并确定其作用机制。
在此，我们从人参根际土壤中筛选出6种（[具体物种名称1]、[具体物种名称2]、[具体物种名称3]、[具体物种名称4]、[具体物种名称5]和[具体物种名称6]）物种，并评估它们对人参的促生长作用以及对人参根际土壤微生物群落和化学性质的影响。
除了[物种名称F]外，与对照相比，其他5个物种均增加了人参生物量。在化学性质方面，用人参根际土壤的[具体物种名称]孢子进行根灌后，人参根际土壤的pH值、速效钾含量和速效磷含量分别增加了1.16 - 5.85%、0.16 - 14.03%和3.92 - 38.64%。对于土壤微生物群落，真菌Chao1和Ace丰富度指数降低。[具体物种名称]的施用提高了[具体微生物名称]的相对水平，但降低了[具体微生物名称]的相对水平。在属水平上，[具体物种名称]的施用提高了[具体属名称1]、[具体属名称2]和[具体属名称3]的相对水平，但降低了[具体属名称4]的相对水平。速效钾和速效磷是影响细菌群落结构的最重要元素，而全钾是对真菌群落结构影响最大的元素。
结果表明，[具体物种名称]的施用可以增加土壤养分，调节土壤微生物群落的结构和组成，从而提高人参的生物量。该结果将为参栽培中的土壤改良提供指导。
