Role of Two Plant Growth-Promoting Bacteria in Remediating Cadmium-Contaminated Soil Combined with Miscanthus floridulus (Lab.).
Role of Two Plant Growth-Promoting Bacteria in Remediating Cadmium-Contaminated Soil Combined with Miscanthus floridulus (Lab.).
复制标题
两种植物促生菌联合五节芒修复镉污染土壤的作用（实验室）
DOI：
10.3390/plants10050912
复制
发表时间：
2021-05-02
期刊：
影响因子：
--
通讯作者：
Xiao Y
中科院分区：
文献类型：
--
作者：
Liu S;Liu H;Chen R;Ma Y;Yang B;Chen Z;Liang Y;Fang J;Xiao Y
芒草属是能源植物和优良的候选人的植物修复方法的金属（类）S污染的土壤，特别是当结合植物生长促进细菌。从5种优势植物（Artemisia argyi Levl.，唐菖蒲，苎麻，和Miscanthus floridulus Lab.）殖民镉（Cd）污染矿区（花垣，湖南，中国）。我们随后测试了它们的植物生长促进（PGP）性状（例如，吲哚-3-乙酸、铁载体和1-氨基环丙烷-1-羧酸脱氨酶的产生）和Cd耐受性。在细菌中，两个菌株，密歇根克雷伯氏菌TS 8和Lelliottia jeotchenensis MR 2，表现出较高的镉耐受性，并在体外生长促进性状方面表现出最好的结果。在随后的10 mg·kg-1 Cd土壤盆栽试验中，研究了TS 8和MR 2菌株与M. floridulus（Lab.）种植M. floridulus（Lab.），结果表明，TS-8处理使水稻株高增加39.9%，叶片干重增加99.1%，根际土壤Cd总量减少49.2%。MR 2对植物修复效果无显著影响，但能显著促进Cd从根系向地上部的转运（转运系数> 1）。K. michiganensis TS 8和M. floridulus（Lab.）接种L. jeotaxis MR 2可用于提高M.花卉。
Miscanthus spp. are energy plants and excellent candidates for phytoremediation approaches of metal(loid)s-contaminated soils, especially when combined with plant growth-promoting bacteria. Forty-one bacterial strains were isolated from the rhizosphere soils and roots tissue of five dominant plants (Artemisia argyi Levl., Gladiolus gandavensis Vaniot Houtt, Boehmeria nivea L., Veronica didyma Tenore, and Miscanthus floridulus Lab.) colonizing a cadmium (Cd)-contaminated mining area (Huayuan, Hunan, China). We subsequently tested their plant growth-promoting (PGP) traits (e.g., production of indole-3-acetic acid, siderophore, and 1-aminocyclopropane-1-carboxylate deaminase) and Cd tolerance. Among bacteria, two strains, Klebsiella michiganensis TS8 and Lelliottia jeotgali MR2, presented higher Cd tolerance and showed the best results regarding in vitro growth-promoting traits. In the subsequent pot experiments using soil spiked with 10 mg Cd·kg−1, we investigated the effects of TS8 and MR2 strains on soil Cd phytoremediation when combined with M. floridulus (Lab.). After sixty days of planting M. floridulus (Lab.), we found that TS8 increased plant height by 39.9%, dry weight of leaves by 99.1%, and the total Cd in the rhizosphere soil was reduced by 49.2%. Although MR2 had no significant effects on the efficiency of phytoremediation, it significantly enhanced the Cd translocation from the root to the aboveground tissues (translocation factor > 1). The combination of K. michiganensis TS8 and M. floridulus (Lab.) may be an effective method to remediate Cd-contaminated soils, while the inoculation of L. jeotgali MR2 may be used to enhance the phytoextraction potential of M. floridulus.
登录
查看更多内容
影响因子：
3.6
作者：
Barbosa, Bruno;Boleo, Sara;Fernando, Ana Luisa
通讯作者：
Fernando, Ana Luisa
影响因子：
6.8
作者：
He, Xiaoman;Xu, Mingjing;Xia, Yan
通讯作者：
Xia, Yan
影响因子：
2.1
作者：
Ghavami, Nazanin;Alikhani, Hossein Ali;Besharati, Hossein
通讯作者：
Besharati, Hossein
影响因子：
5.7
作者：
El-Meihy, Rasha M.;Abou-Aly, Hamed E.;El-Alkshar, Eman A.
通讯作者：
El-Alkshar, Eman A.
影响因子：
9.7
作者：
Chen, Liang;Luo, Shenglian;Liu, Chengbin
通讯作者：
Liu, Chengbin