Exogenous Melatonin Improves Plant Iron Deficiency Tolerance via Increased Accumulation of Polyamine-Mediated Nitric Oxide
| العنوان: | Exogenous Melatonin Improves Plant Iron Deficiency Tolerance via Increased Accumulation of Polyamine-Mediated Nitric Oxide |
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| المؤلفون: | Zhi Liu, Jianfei Wang, Cheng Zhou, Zhongyou Ma, Jian Zhu, Lin Zhu |
| المصدر: | International Journal of Molecular Sciences International Journal of Molecular Sciences, Vol 17, Iss 11, p 1777 (2016) International Journal of Molecular Sciences; Volume 17; Issue 11; Pages: 1777 |
| بيانات النشر: | MDPI, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, FMN Reductase, Arabidopsis, melatonin, 01 natural sciences, Plant Roots, lcsh:Chemistry, chemistry.chemical_compound, iron deficiency, polyamine, Gene Expression Regulation, Plant, Basic Helix-Loop-Helix Transcription Factors, Arabidopsis thaliana, lcsh:QH301-705.5, Cation Transport Proteins, Spectroscopy, Chlorosis, biology, food and beverages, General Medicine, Iron Deficiencies, Computer Science Applications, Biochemistry, nitric oxide (NO), iron remobilization, hormones, hormone substitutes, and hormone antagonists, Plant Shoots, medicine.drug, Iron, Nitric Oxide, Catalysis, Article, Nitric oxide, Inorganic Chemistry, Melatonin, 03 medical and health sciences, medicine, Physical and Theoretical Chemistry, Iron deficiency (plant disorder), Molecular Biology, Arabidopsis Proteins, Organic Chemistry, fungi, Biotic stress, biology.organism_classification, 030104 developmental biology, chemistry, lcsh:Biology (General), lcsh:QD1-999, Polyamine, 010606 plant biology & botany |
| الوصف: | Melatonin has recently been demonstrated to play important roles in the regulation of plant growth, development, and abiotic and biotic stress responses. However, the possible involvement of melatonin in Fe deficiency responses and the underlying mechanisms remained elusive in Arabidopsis thaliana. In this study, Fe deficiency quickly induced melatonin synthesis in Arabidopsis plants. Exogenous melatonin significantly increased the soluble Fe content of shoots and roots, and decreased the levels of root cell wall Fe bound to pectin and hemicellulose, thus alleviating Fe deficiency-induced chlorosis. Intriguingly, melatonin treatments induced a significant increase of nitric oxide (NO) accumulation in roots of Fe-deficient plants, but not in those of polyamine-deficient (adc2-1 and d-arginine-treated) plants. Moreover, the melatonin-alleviated leaf chlorosis was blocked in the polyamine- and NO-deficient (nia1nia2noa1 and c-PTIO-treated) plants, and the melatonin-induced Fe remobilization was largely inhibited. In addition, the expression of some Fe acquisition-related genes, including FIT1, FRO2, and IRT1 were significantly up-regulated by melatonin treatments, whereas the enhanced expression of these genes was obviously suppressed in the polyamine- and NO-deficient plants. Collectively, our results provide evidence to support the view that melatonin can increase the tolerance of plants to Fe deficiency in a process dependent on the polyamine-induced NO production under Fe-deficient conditions. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1422-0067 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68e0ac154b7ae412e13818870c81f807Test http://europepmc.org/articles/PMC5133778Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....68e0ac154b7ae412e13818870c81f807 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14220067 |
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