Rhizospheric Lactobacillus spp. contribute to the high Cd-accumulating characteristics of Phytolacca spp. in acidic Cd-contaminated soil

doi:10.1016/j.envres.2023.117270

KIB OpenIR

	Rhizospheric Lactobacillus spp. contribute to the high Cd-accumulating characteristics of Phytolacca spp. in acidic Cd-contaminated soil
	Li,Xiong; Li,Boqun; Liu,Yuanyuan; Xu,Jianchu
	2023
发表期刊	ENVIRONMENTAL RESEARCH
ISSN	1096-0953
卷号	238 页码:117270
摘要	Screening high Cd-accumulating plants and understanding the interactions between plants, rhizospheric microbes and Cd are important in developing microbe-assisted phytoremediation techniques for Cd-contaminated soils. In this study, the Cd tolerance and accumulation characteristics of Phytolacca americana L., P. icosandra L. and P. polyandra Batalin growing in acidic Cd-contaminated soil were compared to evaluate their phytoremediation potential. According to Cd concentrations (root: 8.26-37.09 mg kg(-1), shoot: 2.80-9.26 mg kg(-1)), bioconcentration factors (BCFs) and translocation factors (TFs), the three Phytolacca species exhibited high Cd-accumulation capacities, ranked in the following order: P. icosandra (root BCF: 1.25, shoot BCF: 0.31, TF: 0.25) > P. polyandra (root BCF: 0.68, shoot BCF: 0.26, TF: 0.44) > P. americana (root BCF: 0.28, shoot BCF: 0.09, TF: 0.38). Phytolacca icosandra and P. polyandra can thus be considered as two new Cd accumulators for phytoremediation. Soil pH, available Cd (ACd) concentration and certain bacterial taxa (e.g. Lactobacillus, Helicobacter, Alistipes, Desulfovibrio and Mucispirillum) were differentially altered in the rhizospheres of the three Phytolacca species in comparison to unplanted soil. Correlation analysis showed that there were significant interactions between rhizospheric ACd concentration, pH and Lactobacillus bacteria (L. murinus, L. gasseri and L. reuteri), which affected Cd uptake by Phytolacca plants. The mono- and co-inoculation of L. murinus strain D51883, L. gasseri strain D51533 and L. reuteri strain D24591 in the rhizosphere of P. icosandra altered the rhizospheric pH and ACd concentrations, in addition to increasing the shoot Cd contents by 31.9%-44.6%. These results suggest that recruitment of rhizospheric Lactobacillus spp. by Phytolacca plants contributes to their high Cd-accumulating characteristics. This study provides novel insights into understanding the interactions between plants, rhizobacteria and heavy metals.
关键词	Environmental pollution Phytolacca Heavy metals Phytoextraction Rhizobacteria Lactobacillus MICROBIAL COMMUNITY HEAVY-METALS PLANT ZN
DOI	10.1016/j.envres.2023.117270
收录类别	SCI
WOS记录号	WOS:001092058000001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75586
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Li,Xiong,Li,Boqun,Liu,Yuanyuan,et al. Rhizospheric Lactobacillus spp. contribute to the high Cd-accumulating characteristics of Phytolacca spp. in acidic Cd-contaminated soil[J]. ENVIRONMENTAL RESEARCH,2023,238:117270.
APA	Li,Xiong,Li,Boqun,Liu,Yuanyuan,&Xu,Jianchu.(2023).Rhizospheric Lactobacillus spp. contribute to the high Cd-accumulating characteristics of Phytolacca spp. in acidic Cd-contaminated soil.ENVIRONMENTAL RESEARCH,238,117270.
MLA	Li,Xiong,et al."Rhizospheric Lactobacillus spp. contribute to the high Cd-accumulating characteristics of Phytolacca spp. in acidic Cd-contaminated soil".ENVIRONMENTAL RESEARCH 238(2023):117270.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
1-s2.0-S001393512302（7029KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载