Drought resistance of Camellia oleifera under drought stress: Changes in physiology and growth characteristics.
To investigate the growth, physiological changes and mechanism of drought resistance of Camellia oleifera GWu-2 under drought stress conditions, changes in the main growth and physiological indices of GWu-2 under different water gradients were studied. Factor analysis was used to study the differenc...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2020-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0235795 |
| _version_ | 1818404477046095872 |
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| author | Xiaosan He Linchu Xu Chang Pan Chun Gong Yujuan Wang Xinliang Liu Yuanchun Yu |
| author_facet | Xiaosan He Linchu Xu Chang Pan Chun Gong Yujuan Wang Xinliang Liu Yuanchun Yu |
| author_sort | Xiaosan He |
| collection | DOAJ |
| description | To investigate the growth, physiological changes and mechanism of drought resistance of Camellia oleifera GWu-2 under drought stress conditions, changes in the main growth and physiological indices of GWu-2 under different water gradients were studied. Factor analysis was used to study the differences between indicators under different water gradients, and correlation analysis was implemented to analyze the relationship between different factors. We observed that the growth state, enzyme secretion, stomatal morphology and leaf osmotic adjustment substances were significantly affected by drought stress. In particular, increases in leaf abscisic acid (ABA), indole acetic acid (IAA) and methyl jasmonate (MeJA) contents under drought stress were negatively correlated with the stomatal opening degree, and the ratio of ZR/GA3 was significantly correlated with the growth and physiological indicators of GWu-2, indicating that different hormones respond differently to drought stress and have different functions in the growth regulation and drought resistance of GWu-2. We concluded that the drought resistance mechanism of GWu-2 was controlled by maintaining root growth to obtain the necessary water, increasing the contents of osmotic substances of leaves to maintain water holding capacity, reducing the transpiration of water by increasing leaf ABA, IAA and MeJA content to close stomata and reducing the damage caused by drought by increasing the activity of superoxide dismutase (SOD). |
| first_indexed | 2024-12-14T08:40:46Z |
| format | Article |
| id | doaj.art-f033ad115078426bb6f91f8798ab3e98 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-14T08:40:46Z |
| publishDate | 2020-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-f033ad115078426bb6f91f8798ab3e982022-12-21T23:09:18ZengPublic Library of Science (PLoS)PLoS ONE1932-62032020-01-01157e023579510.1371/journal.pone.0235795Drought resistance of Camellia oleifera under drought stress: Changes in physiology and growth characteristics.Xiaosan HeLinchu XuChang PanChun GongYujuan WangXinliang LiuYuanchun YuTo investigate the growth, physiological changes and mechanism of drought resistance of Camellia oleifera GWu-2 under drought stress conditions, changes in the main growth and physiological indices of GWu-2 under different water gradients were studied. Factor analysis was used to study the differences between indicators under different water gradients, and correlation analysis was implemented to analyze the relationship between different factors. We observed that the growth state, enzyme secretion, stomatal morphology and leaf osmotic adjustment substances were significantly affected by drought stress. In particular, increases in leaf abscisic acid (ABA), indole acetic acid (IAA) and methyl jasmonate (MeJA) contents under drought stress were negatively correlated with the stomatal opening degree, and the ratio of ZR/GA3 was significantly correlated with the growth and physiological indicators of GWu-2, indicating that different hormones respond differently to drought stress and have different functions in the growth regulation and drought resistance of GWu-2. We concluded that the drought resistance mechanism of GWu-2 was controlled by maintaining root growth to obtain the necessary water, increasing the contents of osmotic substances of leaves to maintain water holding capacity, reducing the transpiration of water by increasing leaf ABA, IAA and MeJA content to close stomata and reducing the damage caused by drought by increasing the activity of superoxide dismutase (SOD).https://doi.org/10.1371/journal.pone.0235795 |
| spellingShingle | Xiaosan He Linchu Xu Chang Pan Chun Gong Yujuan Wang Xinliang Liu Yuanchun Yu Drought resistance of Camellia oleifera under drought stress: Changes in physiology and growth characteristics. PLoS ONE |
| title | Drought resistance of Camellia oleifera under drought stress: Changes in physiology and growth characteristics. |
| title_full | Drought resistance of Camellia oleifera under drought stress: Changes in physiology and growth characteristics. |
| title_fullStr | Drought resistance of Camellia oleifera under drought stress: Changes in physiology and growth characteristics. |
| title_full_unstemmed | Drought resistance of Camellia oleifera under drought stress: Changes in physiology and growth characteristics. |
| title_short | Drought resistance of Camellia oleifera under drought stress: Changes in physiology and growth characteristics. |
| title_sort | drought resistance of camellia oleifera under drought stress changes in physiology and growth characteristics |
| url | https://doi.org/10.1371/journal.pone.0235795 |
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