Effects of sodium benzoate on growth and physiological characteristics of wheat seedlings under compound heavy metal stress
In this study, we investigated the effect of exogenous sodium benzoate on wheat seedlings (Yangmai 16) grown under heavy metal stress. The results showed that 2.4 mmol kg−1 of heavy metals significantly inhibited growth and delayed emergence of wheat seedlings. Under compound heavy metal stress, app...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-04-01
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| Series: | Journal of Integrative Agriculture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311919627231 |
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| author | Pan-pan LIANG Chen ZHAO Yuan LIN Ji-jia GENG Yuan CHEN De-hua CHEN Xiang ZHANG |
| author_facet | Pan-pan LIANG Chen ZHAO Yuan LIN Ji-jia GENG Yuan CHEN De-hua CHEN Xiang ZHANG |
| author_sort | Pan-pan LIANG |
| collection | DOAJ |
| description | In this study, we investigated the effect of exogenous sodium benzoate on wheat seedlings (Yangmai 16) grown under heavy metal stress. The results showed that 2.4 mmol kg−1 of heavy metals significantly inhibited growth and delayed emergence of wheat seedlings. Under compound heavy metal stress, application of 2–4 g L−1 sodium benzoate significantly increased (P>0.01) chlorophyll content and chlorophyll fluorescence parameters Fv/Fm and Fv/Fo of wheat, compared to the control (water treatment). Further analysis showed that application of 2–4 g L−1 sodium benzoate alleviated osmotic stress by promoting the accumulation of osmolytes such as soluble proteins and free proline, increased the activity of superoxide dismutase (SOD) and reduced malondialdehyde content (MDA). In contrast, higher concentrations of sodium benzoate solution (>6 g L−1) inhibited the growth of wheat seedlings and even caused damage to seedlings. Correlation analysis showed that when the sodium benzoate concentration was in the range of 1.97–3.12 g L−1 (2016) and 1.58–3.27 g L−1 (2017), values of chlorophyll and its components, root activity, SOD activity, soluble protein, and free proline content were the highest. When the sodium benzoate concentration was raised to 2.59 g L−1 (2016) or 3.02 g L−1 (2017), MDA content was the lowest. Ultimately, exogenous sodium benzoate (2–4 g L−1) facilitates root development and improves the root activity of wheat seedlings grown under compound heavy metals stress, thereby effectively alleviating the damage of compound heavy metal stress in wheat seedlings. |
| first_indexed | 2024-12-18T23:05:56Z |
| format | Article |
| id | doaj.art-71b42bd411194f0dbef6067b92ffdfc7 |
| institution | Directory Open Access Journal |
| issn | 2095-3119 |
| language | English |
| last_indexed | 2024-12-18T23:05:56Z |
| publishDate | 2020-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj.art-71b42bd411194f0dbef6067b92ffdfc72022-12-21T20:48:25ZengElsevierJournal of Integrative Agriculture2095-31192020-04-0119410101018Effects of sodium benzoate on growth and physiological characteristics of wheat seedlings under compound heavy metal stressPan-pan LIANG0Chen ZHAO1Yuan LIN2Ji-jia GENG3Yuan CHEN4De-hua CHEN5Xiang ZHANG6Correspondence LIANG Pan-pan, Tel/Fax: +86-514-87979357; Key Laboratory of Crop Genetics and Physiology of Jiangsu Province/Agricultural College, Yangzhou University, Yangzhou 225009, P.R.ChinaKey Laboratory of Crop Genetics and Physiology of Jiangsu Province/Agricultural College, Yangzhou University, Yangzhou 225009, P.R.ChinaKey Laboratory of Crop Genetics and Physiology of Jiangsu Province/Agricultural College, Yangzhou University, Yangzhou 225009, P.R.ChinaKey Laboratory of Crop Genetics and Physiology of Jiangsu Province/Agricultural College, Yangzhou University, Yangzhou 225009, P.R.ChinaKey Laboratory of Crop Genetics and Physiology of Jiangsu Province/Agricultural College, Yangzhou University, Yangzhou 225009, P.R.ChinaKey Laboratory of Crop Genetics and Physiology of Jiangsu Province/Agricultural College, Yangzhou University, Yangzhou 225009, P.R.ChinaCorrespondence ZHANG Xiang, Tel/Fax: +86-514-87979357; Key Laboratory of Crop Genetics and Physiology of Jiangsu Province/Agricultural College, Yangzhou University, Yangzhou 225009, P.R.ChinaIn this study, we investigated the effect of exogenous sodium benzoate on wheat seedlings (Yangmai 16) grown under heavy metal stress. The results showed that 2.4 mmol kg−1 of heavy metals significantly inhibited growth and delayed emergence of wheat seedlings. Under compound heavy metal stress, application of 2–4 g L−1 sodium benzoate significantly increased (P>0.01) chlorophyll content and chlorophyll fluorescence parameters Fv/Fm and Fv/Fo of wheat, compared to the control (water treatment). Further analysis showed that application of 2–4 g L−1 sodium benzoate alleviated osmotic stress by promoting the accumulation of osmolytes such as soluble proteins and free proline, increased the activity of superoxide dismutase (SOD) and reduced malondialdehyde content (MDA). In contrast, higher concentrations of sodium benzoate solution (>6 g L−1) inhibited the growth of wheat seedlings and even caused damage to seedlings. Correlation analysis showed that when the sodium benzoate concentration was in the range of 1.97–3.12 g L−1 (2016) and 1.58–3.27 g L−1 (2017), values of chlorophyll and its components, root activity, SOD activity, soluble protein, and free proline content were the highest. When the sodium benzoate concentration was raised to 2.59 g L−1 (2016) or 3.02 g L−1 (2017), MDA content was the lowest. Ultimately, exogenous sodium benzoate (2–4 g L−1) facilitates root development and improves the root activity of wheat seedlings grown under compound heavy metals stress, thereby effectively alleviating the damage of compound heavy metal stress in wheat seedlings.http://www.sciencedirect.com/science/article/pii/S2095311919627231sodium benzoatecompound heavy metalswheat seedlingsphysiological characteristics |
| spellingShingle | Pan-pan LIANG Chen ZHAO Yuan LIN Ji-jia GENG Yuan CHEN De-hua CHEN Xiang ZHANG Effects of sodium benzoate on growth and physiological characteristics of wheat seedlings under compound heavy metal stress Journal of Integrative Agriculture sodium benzoate compound heavy metals wheat seedlings physiological characteristics |
| title | Effects of sodium benzoate on growth and physiological characteristics of wheat seedlings under compound heavy metal stress |
| title_full | Effects of sodium benzoate on growth and physiological characteristics of wheat seedlings under compound heavy metal stress |
| title_fullStr | Effects of sodium benzoate on growth and physiological characteristics of wheat seedlings under compound heavy metal stress |
| title_full_unstemmed | Effects of sodium benzoate on growth and physiological characteristics of wheat seedlings under compound heavy metal stress |
| title_short | Effects of sodium benzoate on growth and physiological characteristics of wheat seedlings under compound heavy metal stress |
| title_sort | effects of sodium benzoate on growth and physiological characteristics of wheat seedlings under compound heavy metal stress |
| topic | sodium benzoate compound heavy metals wheat seedlings physiological characteristics |
| url | http://www.sciencedirect.com/science/article/pii/S2095311919627231 |
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