Indexes of Radicle are Sensitive and Effective for Assessing Copper and Zinc Tolerance in Germinating Seeds of <i>Suaeda salsa</i>
Euhalophytes, such as <i>Suaeda salsa</i>, are ideal candidates to remediate heavy metal-polluted saline soils. However, the metal tolerance ability of dimorphic seeds and subsequent seedlings is largely unknown. This study investigated the tolerance of <i>S. salsa</i> seeds...
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| Format: | Article |
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MDPI AG
2020-09-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/10/10/445 |
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| author | Hao Zhang Li Jiang Mohsin Tanveer Jinbiao Ma Zhenyong Zhao Lei Wang |
| author_facet | Hao Zhang Li Jiang Mohsin Tanveer Jinbiao Ma Zhenyong Zhao Lei Wang |
| author_sort | Hao Zhang |
| collection | DOAJ |
| description | Euhalophytes, such as <i>Suaeda salsa</i>, are ideal candidates to remediate heavy metal-polluted saline soils. However, the metal tolerance ability of dimorphic seeds and subsequent seedlings is largely unknown. This study investigated the tolerance of <i>S. salsa</i> seeds to different concentrations of Cu<sup>2+</sup> (0–300 mM) and Zn<sup>2+</sup> (0–300 mM) during germination and seedling growth stages. Results showed that dimorphic seeds of <i>S. salsa</i> had high metal tolerance during germination, and even germinated under 300 mM Cu and Zn treatments. However, seedling growth was more sensitive to metal solutions and radicle growth was almost completely inhibited by Cu at 10 mM, and by Zn at 50 mM. Germinating seeds and seedlings of <i>S. salsa</i> had a higher metal toxicity threshold of Zn than that of Cu. In all indexes, indexes of radicle were the most sensitive and effective indicator of metal tolerance. Seeds of <i>S. salsa</i> germinated successfully and seedlings survived under high Zn and Cu stress. The results suggest that <i>S. salsa</i> could be sown directly in heavy metal-contaminated soils for phytoremediation. |
| first_indexed | 2024-03-10T15:57:26Z |
| format | Article |
| id | doaj.art-fd42d3dc73834ad39ff47174745fd452 |
| institution | Directory Open Access Journal |
| issn | 2077-0472 |
| language | English |
| last_indexed | 2024-03-10T15:57:26Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
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| series | Agriculture |
| spelling | doaj.art-fd42d3dc73834ad39ff47174745fd4522023-11-20T15:36:23ZengMDPI AGAgriculture2077-04722020-09-01101044510.3390/agriculture10100445Indexes of Radicle are Sensitive and Effective for Assessing Copper and Zinc Tolerance in Germinating Seeds of <i>Suaeda salsa</i>Hao Zhang0Li Jiang1Mohsin Tanveer2Jinbiao Ma3Zhenyong Zhao4Lei Wang5State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, ChinaState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, ChinaTasmanian Institute of Agriculture, University of Tasmania, Hobart 7005, AustraliaState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, ChinaState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, ChinaState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, ChinaEuhalophytes, such as <i>Suaeda salsa</i>, are ideal candidates to remediate heavy metal-polluted saline soils. However, the metal tolerance ability of dimorphic seeds and subsequent seedlings is largely unknown. This study investigated the tolerance of <i>S. salsa</i> seeds to different concentrations of Cu<sup>2+</sup> (0–300 mM) and Zn<sup>2+</sup> (0–300 mM) during germination and seedling growth stages. Results showed that dimorphic seeds of <i>S. salsa</i> had high metal tolerance during germination, and even germinated under 300 mM Cu and Zn treatments. However, seedling growth was more sensitive to metal solutions and radicle growth was almost completely inhibited by Cu at 10 mM, and by Zn at 50 mM. Germinating seeds and seedlings of <i>S. salsa</i> had a higher metal toxicity threshold of Zn than that of Cu. In all indexes, indexes of radicle were the most sensitive and effective indicator of metal tolerance. Seeds of <i>S. salsa</i> germinated successfully and seedlings survived under high Zn and Cu stress. The results suggest that <i>S. salsa</i> could be sown directly in heavy metal-contaminated soils for phytoremediation.https://www.mdpi.com/2077-0472/10/10/445dimorphic seedgermination indexhalophytephytoremediationseedling growth<i>Suaeda salsa</i> |
| spellingShingle | Hao Zhang Li Jiang Mohsin Tanveer Jinbiao Ma Zhenyong Zhao Lei Wang Indexes of Radicle are Sensitive and Effective for Assessing Copper and Zinc Tolerance in Germinating Seeds of <i>Suaeda salsa</i> Agriculture dimorphic seed germination index halophyte phytoremediation seedling growth <i>Suaeda salsa</i> |
| title | Indexes of Radicle are Sensitive and Effective for Assessing Copper and Zinc Tolerance in Germinating Seeds of <i>Suaeda salsa</i> |
| title_full | Indexes of Radicle are Sensitive and Effective for Assessing Copper and Zinc Tolerance in Germinating Seeds of <i>Suaeda salsa</i> |
| title_fullStr | Indexes of Radicle are Sensitive and Effective for Assessing Copper and Zinc Tolerance in Germinating Seeds of <i>Suaeda salsa</i> |
| title_full_unstemmed | Indexes of Radicle are Sensitive and Effective for Assessing Copper and Zinc Tolerance in Germinating Seeds of <i>Suaeda salsa</i> |
| title_short | Indexes of Radicle are Sensitive and Effective for Assessing Copper and Zinc Tolerance in Germinating Seeds of <i>Suaeda salsa</i> |
| title_sort | indexes of radicle are sensitive and effective for assessing copper and zinc tolerance in germinating seeds of i suaeda salsa i |
| topic | dimorphic seed germination index halophyte phytoremediation seedling growth <i>Suaeda salsa</i> |
| url | https://www.mdpi.com/2077-0472/10/10/445 |
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