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| Cadmium tolerance and accumulation ability of different chemical ecological types of Perilla frutescens |
| Received:February 07, 2021 |
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| KeyWord:Perilla frutescens;chemical ecological type;cadmium tolerance;cadmium enrichment |
| Author Name | Affiliation | E-mail | | HAN Bolun | Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | XIAO Qingtie | Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Key Laboratory of Crop Ecology and Molecular Physiology of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | XIE Huiling | Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | YOU Wu | Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | ZHENG Xinyu | Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Key Laboratory of Crop Ecology and Molecular Physiology of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | LIN Ruiyu | Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Key Laboratory of Crop Ecology and Molecular Physiology of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China | lrylin2004@163.com |
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| Abstract: |
| This study explored differences in the cadmium tolerance and accumulation capacity of various chemical ecological types of Perilla frutescens. In this context, P. frutescens was treated with different cadmium concentrations and the germination indices of four chemical ecological types of P. frutescens seeds were determined. The cadmium content and cadmium enrichment characteristics of the subsequent seedlings were quantified. The results showed that the germination rate and potential of PKPA, EK, and PK-Ⅰ P. frutescens seeds were not significantly affected by a 10.0 mg·L-1 cadmium treatment, whereas this treatment significantly inhibited the germination of PK-Ⅱ P. frutescens seeds. Under different cadmium concentrations, the cadmium content in each part of different ecotypes of P. frutescens in descending order was:root(1 052.0~5 337.1 mg·kg-1)> stem(327.6~807.9 mg·kg-1)> leaf(104.8~343.3 mg·kg-1). The cadmium content of the entire plant was between 348.1~1 416.73 mg·kg-1, which is higher than standard cadmium hyperaccumulators(100 mg·kg-1). There were significant differences in the cadmium enrichment coefficient(BCF) of different P. frutescens ecotypes. The BCF ranged between 127.9 and 300.5, and the BCF of PAPK, PK-Ⅱ, and EK P. frutescens were 252.0, 300.5, and 295.3, respectively, which were significantly higher than PK-Ⅰ when treated with 2.0 mg·L-1 cadmium. The BCF of PK-I was highest(265.5) when treated with 5.0 mg·L-1 cadmium, which was significantly higher than PAPK, PK-Ⅱ, and EK. The cadmium enrichment of different ecological P. frutescens was the highest with a 5.0 mg·L-1 cadmium treatment. The total cadmium enrichment of the PK-Ⅰ P. frutescens was 454.0 μg·plant-1, which was 2.48, 1.69 and 2.05 times higher than that of PAPK, PK-Ⅱ, and EK P. frutescens types, respectively. Studies have shown that there are significant differences in the cadmium tolerance of different chemical ecotypes of PK-Ⅰ P. frutescens under cadmium stress. P. frutescens has high cadmium tolerance and enrichment ability, with great potential for cadmium pollution eradication; thus, it may be used for future research on cadmium tolerance in P. frutescens. |
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