Gibberellic acid reverses glucose-inhibited photosynthesis and growth via reduced glutathione and hormonal crosstalk in chromium-treated mustard
Chromium (Cr) contamination jeopardizes agricultural productivity by impairing photosynthesis and growth in plants. This study investigates the potential of gibberellic acid (GA) in mitigating the adverse effects of Cr exposure in mustard (Brassica juncea L.) plants and elucidates the underlying mec...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Plant Stress |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667064X24003476 |
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| author | Bareerah Morris Sheen Khan Noushina Iqbal Abdulrahman Al-Hashimi Nafees A. Khan |
| author_facet | Bareerah Morris Sheen Khan Noushina Iqbal Abdulrahman Al-Hashimi Nafees A. Khan |
| author_sort | Bareerah Morris |
| collection | DOAJ |
| description | Chromium (Cr) contamination jeopardizes agricultural productivity by impairing photosynthesis and growth in plants. This study investigates the potential of gibberellic acid (GA) in mitigating the adverse effects of Cr exposure in mustard (Brassica juncea L.) plants and elucidates the underlying mechanism involved. Mustard plants were treated with 100 µM Cr to induce stress, followed by individual and combined foliar applications of 10 µM GA and 6 % glucose (Glu) to assess their effects on photosynthesis, growth, oxidative stress and hormonal regulation. Photosynthesis and growth of Cr-treated plants were inhibited, partially due to Glu accumulation. GA application enhanced Glu utilization, reduced reactive oxygen species (ROS) production, and optimized ethylene and nitric oxide (NO) levels. The optimized ethylene and NO signaled increased proline, GSH and antioxidant enzyme activity, thus promoting photosynthesis and growth under Cr stress. This study highlights the role of GA with Glu in counteracting Cr toxicity through complex hormonal interactions, emphasizing its potential as a phytoremediation strategy to improve the growth and productivity of crops in Cr-contaminated soils. The mechanisms underlying GA-mediated stress alleviation could pave the way for developing targeted approaches to enhance plant resilience against heavy metal stress. |
| format | Article |
| id | doaj-art-8e8ef9b248cc46188aaa7468eb2b7aa8 |
| institution | Kabale University |
| issn | 2667-064X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Plant Stress |
| spelling | doaj-art-8e8ef9b248cc46188aaa7468eb2b7aa82024-12-19T11:02:15ZengElsevierPlant Stress2667-064X2024-12-0114100694Gibberellic acid reverses glucose-inhibited photosynthesis and growth via reduced glutathione and hormonal crosstalk in chromium-treated mustardBareerah Morris0Sheen Khan1Noushina Iqbal2Abdulrahman Al-Hashimi3Nafees A. Khan4Plant Physiology and Biochemistry Laboratory, Department of Botany, Aligarh Muslim University, Aligarh, 202002, IndiaPlant Physiology and Biochemistry Laboratory, Department of Botany, Aligarh Muslim University, Aligarh, 202002, IndiaDepartment of Botany, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, 110062, IndiaDepartment of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudia ArabiaPlant Physiology and Biochemistry Laboratory, Department of Botany, Aligarh Muslim University, Aligarh, 202002, India; Corresponding author.Chromium (Cr) contamination jeopardizes agricultural productivity by impairing photosynthesis and growth in plants. This study investigates the potential of gibberellic acid (GA) in mitigating the adverse effects of Cr exposure in mustard (Brassica juncea L.) plants and elucidates the underlying mechanism involved. Mustard plants were treated with 100 µM Cr to induce stress, followed by individual and combined foliar applications of 10 µM GA and 6 % glucose (Glu) to assess their effects on photosynthesis, growth, oxidative stress and hormonal regulation. Photosynthesis and growth of Cr-treated plants were inhibited, partially due to Glu accumulation. GA application enhanced Glu utilization, reduced reactive oxygen species (ROS) production, and optimized ethylene and nitric oxide (NO) levels. The optimized ethylene and NO signaled increased proline, GSH and antioxidant enzyme activity, thus promoting photosynthesis and growth under Cr stress. This study highlights the role of GA with Glu in counteracting Cr toxicity through complex hormonal interactions, emphasizing its potential as a phytoremediation strategy to improve the growth and productivity of crops in Cr-contaminated soils. The mechanisms underlying GA-mediated stress alleviation could pave the way for developing targeted approaches to enhance plant resilience against heavy metal stress.http://www.sciencedirect.com/science/article/pii/S2667064X24003476AntioxidantsEthyleneGlucoseHeavy metal stressNitric oxide |
| spellingShingle | Bareerah Morris Sheen Khan Noushina Iqbal Abdulrahman Al-Hashimi Nafees A. Khan Gibberellic acid reverses glucose-inhibited photosynthesis and growth via reduced glutathione and hormonal crosstalk in chromium-treated mustard Plant Stress Antioxidants Ethylene Glucose Heavy metal stress Nitric oxide |
| title | Gibberellic acid reverses glucose-inhibited photosynthesis and growth via reduced glutathione and hormonal crosstalk in chromium-treated mustard |
| title_full | Gibberellic acid reverses glucose-inhibited photosynthesis and growth via reduced glutathione and hormonal crosstalk in chromium-treated mustard |
| title_fullStr | Gibberellic acid reverses glucose-inhibited photosynthesis and growth via reduced glutathione and hormonal crosstalk in chromium-treated mustard |
| title_full_unstemmed | Gibberellic acid reverses glucose-inhibited photosynthesis and growth via reduced glutathione and hormonal crosstalk in chromium-treated mustard |
| title_short | Gibberellic acid reverses glucose-inhibited photosynthesis and growth via reduced glutathione and hormonal crosstalk in chromium-treated mustard |
| title_sort | gibberellic acid reverses glucose inhibited photosynthesis and growth via reduced glutathione and hormonal crosstalk in chromium treated mustard |
| topic | Antioxidants Ethylene Glucose Heavy metal stress Nitric oxide |
| url | http://www.sciencedirect.com/science/article/pii/S2667064X24003476 |
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