| Physiological and rhizospheric response characteristics to cadmium of a newly identified cadmium accumulator Coreopsis grandiflora Hogg. (Asteraceae) | |
Li, Xiong1; Li, Boqun2; Zheng, Yan3; Luo, Landi3,4; Qin, Xiangshi3; Yang, Yongping3,4 ; Xu, Jianchu1
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| 2022 | |
| Source Publication | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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| ISSN | 0147-6513 |
| Volume | 241Issue:xPages:- |
| Abstract | Screening for superior cadmium (Cd) phytoremediation resources and uncovering the mechanisms of plant response to Cd are important for effective phytoremediation of Cd-polluted soils. In this study, the characteristics of Coreopsis grandiflora related to Cd tolerance and accumulation were analyzed to evaluate its Cd phytoremediation potential. The results revealed that C. grandiflora can tolerate up to 20 mg kg(-1) of Cd in the soil. This species showed relatively high shoot bioconcentration factors (1.09-1.85) and translocation factors (0.46-0.97) when grown in soils spiked with 5-45 mg kg(-1) Cd, suggesting that C. grandiflora is a Cd accumulator and can potentially be used for Cd phytoextraction. Physiological analysis indicated that antioxidant enzymes (i.e., superoxide dismutase, peroxidase, and catalase) and various free amino acids (e.g., proline, histidine, and methionine) participate in Cd detoxification in C. grandiflora grown in soil spiked with 20 mg kg(-1) of Cd (Cd20). The overall microbial richness and diversity remained similar between the control (Cd0) and Cd20 soils. However, the abundance of multiple rhizospheric microbial taxa was altered in the Cd20 soil compared with that in the Cd0 soil. Interestingly, many plant growth-promoting microorganisms (e.g., Nocardioides, Flavisolibacter, Rhizobium, Achromobacter, and Penicillium) enriched in the Cd20 soil likely contributed to the growth and vitality of C. grandiflora under Cd stress. Among these, some microorganisms (e.g., Rhizobium, Achromobacter, and Penicillium) likely affected Cd uptake by C. grandiflora. These abundant plant growth-promoting microorganisms potentially interacted with soil pH and the concentrations of Cd and AK in soil. Notably, potassium-solubilizing microbes (e.g., Rhizobium and Penicillium) may effectively solubilize potassium to assist Cd uptake by C. grandiflora. This study provides a new plant resource for Cd phytoextraction and improves our understanding of rhizosphere-associated mechanisms of plant adaptation to Cd-contaminated soil. |
| Keyword | Coreopsis grandiflora Cd accumulator Phytoextraction Amino acid metabolism Plant growth-promoting microorganism |
| Subject Area | Environmental Sciences & Ecology ; Toxicology |
| DOI | 10.1016/j.ecoenv.2022.113739 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000832714500008 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/13129 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.Chinese Acad Sci, Kunming Inst Bot, Dept Econ Plants & Biotechnol, Yunnan Key Lab Wild Plant Resources, Kunming 650201, Yunnan, Peoples R China 2.Chinese Acad Sci, Honghe Ctr Mt Futures, Kunming Inst Bot, Honghe 654400, Peoples R China 3.Chinese Acad Sci, Sci & Technol Informat Ctr, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China 4.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming 650201, Yunnan, Peoples R China 5.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Xishuangbanna 666303, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Xiong,Li, Boqun,Zheng, Yan,et al. Physiological and rhizospheric response characteristics to cadmium of a newly identified cadmium accumulator Coreopsis grandiflora Hogg. (Asteraceae)[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2022,241(x):-. |
| APA | Li, Xiong.,Li, Boqun.,Zheng, Yan.,Luo, Landi.,Qin, Xiangshi.,...&Xu, Jianchu.(2022).Physiological and rhizospheric response characteristics to cadmium of a newly identified cadmium accumulator Coreopsis grandiflora Hogg. (Asteraceae).ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,241(x),-. |
| MLA | Li, Xiong,et al."Physiological and rhizospheric response characteristics to cadmium of a newly identified cadmium accumulator Coreopsis grandiflora Hogg. (Asteraceae)".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 241.x(2022):-. |
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| Physiological and rh（4896KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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