Effect of Phosphate-Solubilizing Bacteria Combined with Green Activator on Accumulation/Translocation of Cadmium in Soil by Ryegrass
PENG Xin1, ZHU Yichun1, YANG Yuan1, WANG Mi2, ZHAO Rule1, HUANG Hongli1
1.College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, Hunan, China;
2.Chinalco Environmental Protection and Ecological Technology (Hunan) Co Ltd, Changsha 410021, Hunan, China
Abstract:With orange residue extract and tetrasodium glutamate diacetate (GLDA) as raw materials, a green activator was prepared. Then, the effects of phosphate-solubilizing bacteria (PSB) combined with green activator on the enrichment, translocation and accumulation of cadmium from soil by ryegrass were studied. The results show that PSB can significantly promote the growth of ryegrass in cadmium-contaminated soil. However, the growth of ryegrass is inhibited by only using green activator, with the dry weight of ryegrass at the end of experiment decreased by 27.37%; while a combination of PSB and green activator can make the final dry weight of ryegrass become 1.29 times that in the blank group, indicating that the addition of PSB can alleviate the negative effect of green activator on the growth of ryegrass. A combination of both can increase the content of phytoavailable cadmium in soil, while decrease the total cadmium concentration in soil. It is shown that the enrichment coefficient of Cd in stem and root parts of ryegrass increases by 35.37% and 10.23%, respectively, and the translocation factor of cadmium by ryegrass increases by 22.58%. In addition, the total accumulation of cadmium in the stem and root parts of ryegrass is up by 87.90% and 32.69%, respectively. It is found that the total accumulation of cadmium in the stem is all greater than that in the root whether by using PSB and green activator separately, or by a combination of both, indicating that PSB combined with green activator can promote the phytoextraction efficiency of cadmium from soil by ryegrass.
彭鑫, 朱逸纯, 杨远, 王密, 赵儒乐, 黄红丽. 解磷菌联合绿色活化剂对黑麦草累积土壤中镉的影响[J]. 矿冶工程, 2024, 44(1): 95-99.
PENG Xin, ZHU Yichun, YANG Yuan, WANG Mi, ZHAO Rule, HUANG Hongli. Effect of Phosphate-Solubilizing Bacteria Combined with Green Activator on Accumulation/Translocation of Cadmium in Soil by Ryegrass. Mining and Metallurgical Engineering, 2024, 44(1): 95-99.
[1] LIU L, LI W, SONG W, et al. Remediation techniques for heavy metal-contaminated soils: Principles and applicability[J]. Science of the Total Environment, 2018,633:206-219.
[2] 刘 炯. 土壤改良介质对矿区先锋植物富集重金属能力的影响[J].矿冶工程, 2018,38(5):122-125.
[3] LI G, WANG Z, LV Y, et al. Effect of culturing ryegrass (Lolium perenne L.) on Cd and pyrene removal and bacteria variations in co-contaminated soil[J]. Environmental Technology & Innovation, 2021,24:101963.
[4] QIAO D, LU H, ZHANG X. Change in phytoextraction of Cd by rapeseed (Brassica napus L.) with application rate of organic acids and the impact of Cd migration from bulk soil to the rhizosphere[J]. Environmental Pollution, 2020,267:115452.
[5] LI F L, QIU Y, XU X, et al. EDTA-enhanced phytoremediation of heavy metals from sludge soil by Italian ryegrass (Lolium perenne L.)[J].Ecotoxicology and Environmental Safety, 2020,191:110185.
[6] 方治国,谢俊婷,杨 青,等. 低分子有机酸强化植物修复重金属污染土壤的作用与机制[J]. 环境科学, 2022,43(10):4669-4678.
[7] LUO J, LIANG J, SONG Y, et al. Compounded chelating agent derived from fruit residue extracts effectively enhances Cd phytoextraction by sedum alfredii[J]. Soil Ecology Letters, 2021,3(3):253-265.
[8] NING Y, LIU N, SONG Y, et al. Enhancement of phytoextraction of Pb by compounded activation agent derived from fruit residue[J]. International Journal of Phytoremediation, 2019,21(14):1449-1456.
[9] QIN S, ZHANG H, HE Y, et al. Improving radish phosphorus utilization efficiency and inhibiting Cd and Pb uptake by using heavy metal-immobilizing and phosphate-solubilizing bacteria[J]. Science of the Total Environment, 2023,868:161685.
[10] De Andrade Silva C A, Da Silva P G P, Da Silva G F A, et al. Biotransformation of fruit residues via solid state bioprocess using Lichtheimia ramosa[J]. SN Applied Sciences, 2020(2):861.
[11] 鲍士旦,秦怀英,劳家柽. 土壤农化分析[M]. 北京:中国农业出版社, 1988.
[12] ZHAO R, HUANG L, PENG X, et al. Effect of different amounts of fruit peel-based activator combined with phosphate-solubilizing bacteria on enhancing phytoextraction of Cd from farmland soil by ryegrass[J]. Environmental Pollution, 2022,316:120602.
[13] ZHANG Y, LUO X J, MO L, et al. Bioaccumulation and translocation of polyhalogenated compounds in rice (Oryza sativa L.) planted in paddy soil collected from an electronic waste recycling site, South China[J]. Chemosphere, 2015,137:25-32.
[14] Brady K U, Kruckeberg A R, Jr H. Evolutionary ecology of plant adaptation to serpentine soils[J]. Annual Review of Ecology Evolution & Systematics, 2005,36(1):243-266.
[15] HE H, YE Z, YANG D, et al. Characterization of endophytic rahnella sp. JN6 from polygonum pubescens and its potential in promoting growth and Cd, Pb, Zn uptake by brassica napus[J]. Chemosphere, 2013,90(6):1960-1965.
[16] Hadi S, Fauzi A, Widiyawati I, et al. The role of phosphate solubilizing bacteria from Rhizosphere of upland rice in the growth and yield of upland rice on ultisol soil[C]//IOP Conference Series: Earth and Environmental Science. IOP Publishing, 2021,653(1):012110.
[17] WANG K, LIU Y, SONG Z, et al. Chelator complexes enhanced Amaranthus hypochondriacus L. phytoremediation efficiency in Cd-contaminated soils[J]. Chemosphere, 2019,237:124480.
[18] Jeong S, Moon H S, Shin D, et al. Survival of introduced phosphate-solubilizing bacteria (PSB) and their impact on microbial community structure during the phytoextraction of Cd-contaminated soil[J]. Journal of Hazardous Materials, 2013,263:441-449.
[19] CHEN L, LUO S, LI X, et al. Interaction of Cd-hyperaccumulator Solanum nigrum L. and functional endophyte Pseudomonas sp. Lk9 on soil heavy metals uptake[J]. Soil Biology and Biochemistry, 2014,68:300-308.
[20] DING Y, SONG Z, FENG R, et al. Interaction of organic acids and pH on multi-heavy metal extraction from alkaline and acid mine soils[J].International Journal of Environmental Science and Technology, 2014,11:33-42.
[21] ZENG F, ALI S, ZHANG H, et al. The influence of pH and organic matter content in paddy soil on heavy metal availability and their uptake by rice plants[J]. Environmental Pollution, 2011,159(1):84-91.
[22] 韦春媛,严 青. 金盏菊和龙葵对土壤中镉的耐受性和富集特征研究[J]. 矿冶工程, 2022,42(3):108-111.
[23] 李晓宝,董焕焕,任丽霞,等. 螯合剂修复重金属污染土壤联合技术研究进展[J]. 环境科学研究, 2019,32(12):1993-2000.
[24] 张之浩,李 威. 活性炭联合植物修复对水中铬的去除效果[J]. 矿冶工程, 2021,41(4):113-116.