Vanillic Acid Mitigates Dehydration Stress Responses in Blueberry Plants
| Autor: | L. Sun, Z. K. Zhu, Ji-Gang Bai, Y. Q. An, Xiu-Juan Wang, R. Sun, Z. Y. Cheng, Y. X. Li, G. G. Yan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine chemistry.chemical_classification Antioxidant biology Superoxide Glutathione peroxidase medicine.medical_treatment Glutathione reductase Plant Science Glutathione 01 natural sciences Superoxide dismutase Lipid peroxidation 03 medical and health sciences chemistry.chemical_compound 030104 developmental biology chemistry medicine biology.protein Food science Blueberry Plants 010606 plant biology & botany |
| Zdroj: | Russian Journal of Plant Physiology. 66:806-817 |
| ISSN: | 1608-3407 1021-4437 |
| DOI: | 10.1134/s1021443719050029 |
| Popis: | This study investigated whether vanillic acid (VA) mitigated dehydration stress responses in blueberry (Vaccinium corymbosum L.), and analyzed potential mechanisms mediating this activity. We pretreated 2‑year-old blueberry plants with 40 μM VA for two days, and then induced dehydration stress by irrigating with nutrient solution containing 10% (w/v) polyethylene glycol 6000 for two days. VA pretreatment increased the transcript levels of genes encoding eight antioxidant enzymes in leaves, including iron superoxide dismutase, chloroplast copper/zinc superoxide dismutase, cytoplasmic copper/zinc superoxide dismutase, catalase, guaiacol peroxidase, glutathione peroxidase, glutathione reductase, and dehydroascorbate reductase. These increased transcript levels were consistent with enhanced activities of superoxide dismutase and glutathione peroxidase and elevated contents of reduced glutathione and ascorbate. Subjecting the V--A‑treated blueberry to dehydration stress further enhanced expression levels of these genes, compared with the control plants subjected only to dehydration stress, increased the contents of endogenous VA, proline, and soluble sugars, enhanced the relative water content and osmotic potential, and reduced the levels of superoxide anion, hydrogen peroxide, and malondialdehyde. So pretreatment of blueberry with VA reduces lipid peroxidation and mitigates dehydration stress by enhancing the endogenous VA content, activating the expression of antioxidant enzyme genes, and increasing the levels of proline and soluble sugars. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|