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Effects of Drought Stress Induced by Hypertonic Polyethylene Glycol (PEG-6000) on Passiflora edulis Sims Physiological Properties.
| Content Provider | Europe PMC |
|---|---|
| Author | Qi, Ying Ma, Lingling Ghani, Muhammad Imran Peng, Qiang Fan, Ruidong Hu, Xiaojing Chen, Xiaoyulong |
| Editor | Barceló, Juan |
| Copyright Year | 2023 |
| Abstract | Passion fruit is known to be sensitive to drought, and in order to study the physiological and biochemical changes that occur in passion fruit seedlings under drought stress, a hypertonic polyethylene glycol (PEG) solution (5%, 10%, 15%, and 20%) was used to simulate drought stress in passion fruit seedlings. We explored the physiological changes in passion fruit seedlings under drought stress induced by PEG to elucidate their response to drought stress and provide a theoretical basis for drought-resistant cultivation of passion fruit seedlings. The results show that drought stress induced by PEG had a significant effect on the growth and physiological indices of passion fruit. Drought stress significantly decreased fresh weight, chlorophyll content, and root vitality. Conversely, the contents of soluble protein (SP), proline (Pro), and malondialdehyde (MDA) increased gradually with the increasing PEG concentration and prolonged stress duration. After nine days, the SP, Pro and MDA contents were higher in passion fruit leaves and roots under 20% PEG treatments compared with the control. Additionally, with the increase in drought time, the activities of antioxidant enzymes such as peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT) showed an increasing trend and then a decreasing trend, and they reached the highest value at the sixth day of drought stress. After rehydration, SP, Pro and MDA contents in the leaves and roots of passion fruit seedlings was reduced. Among all the stress treatments, 20% PEG had the most significant effect on passion fruit seedlings. Therefore, our study demonstrated sensitive concentrations of PEG to simulate drought stress on passion fruit and revealed the physiological adaptability of passion fruit to drought stress. |
| Journal | Plants (Basel, Switzerland) |
| Volume Number | 12 |
| PubMed Central reference number | PMC10305440 |
| Issue Number | 12 |
| PubMed reference number | 37375921 |
| e-ISSN | 22237747 |
| DOI | 10.3390/plants12122296 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2023-06-12 |
| Access Restriction | Open |
| Rights License | Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2023 by the authors. |
| Subject Keyword | Passiflora edulis Sims drought stress hypertonic polyethylene glycol physiological characteristics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science Ecology Ecology, Evolution, Behavior and Systematics |
