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فرآیند و کارکرد گیاهی، جلد ۵، شماره ۱۸، صفحات ۵۹-۶۴
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| عنوان فارسی |
Hydrogen sulfide protects coriander seedlings against copper stress by regulating the ascorbate-glutathione cycle, in leaves |
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| چکیده فارسی مقاله |
Heavy metal stress is one of the major abiotic stresses that this causes environmental pollution in recent decades. This study investigated the effects of exogenous hydrogen sulfide on the ascorbate-glutathione cycle, in coriander seedlings leaves under copper stress. The results showed that copper stress induced the decrease in the activities of APX, SOD, GR and contents of AsA, DHA and GSH. Pretreatment with sodium hydrosulfide (NaHS), a hydrogen sulfide (H2S) donor, enhanced the activities of GR, SOD and the contents of AsA, GSH and DHA under copper stress. Meanwhile, pretreatment with NaHS decreased the malondialdehyde content and electrolyte leakage induced by copper stress in plants. Our results suggested that exogenous hydrogen sulfide alleviated oxidative damage by regulating the ascorbate-glutathione cycle, under copper stress, and H2S has important role for acquisition of copper stress tolerance in coriander seedlings. Therefore, exogenous hydrogen sulfide can be used as a regulator to improve crop tolerance under copper stress. |
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| عنوان انگلیسی |
Hydrogen sulfide protects coriander seedlings against copper stress by regulating the ascorbate-glutathione cycle, in leaves |
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| چکیده انگلیسی مقاله |
Heavy metals are the cause of major abiotic stresses in plants and a principal contributor to environmental pollution in recent decades. This study investigated the effects of exogenous hydrogen sulfide on the ascorbate-glutathione cycle in the leaves of coriander seedlings under copper stress. Results showed that copper stress not only reduced APX and GR activities but also decreased leaf AsA, DHA, and GSH contents. Pretreatment with sodium hydrosulfide (NaHS), a hydrogen sulfide (H2S) donor, was observed to enhance both GR activity and AsA, GSH, and DHA contents under copper stress. Moreover, the pretreatment decreased the malondialdehyde content and electrolyte leakage induced by copper stress in plants. Based on the results obtained, it was hypothesized that exogenous hydrogen sulfide alleviates oxidative damage under copper stress by regulating the ascorbate-glutathione cycle and, further, that H2S plays an important role in the acquisition of copper stress tolerance in coriander seedlings. Exogenous hydrogen sulfide is, therefore, identified as an agent with the potential to be used as a regulator to improve crop tolerance under copper stress. Keywords: Copper stress, Coriander, Hydrogen sulfide, Ascorbate, Glutathione. |
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| کلیدواژه‌های انگلیسی مقاله |
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| نویسندگان مقاله |
الهام اسدی کرم | elham asadikaram
shahid bahonar kerman university
بتول کرامت | batool keramat
shahid bahonar kerman university
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| نشانی اینترنتی |
http://jispp.iut.ac.ir/browse.php?a_code=A-10-102-4&slc_lang=en&sid=fa |
| فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/999/article-999-424365.pdf |
| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
fa |
| موضوعات مقاله منتشر شده |
تنش فلزات سنگین |
| نوع مقاله منتشر شده |
پژوهشی |
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