Effects of Exogenous Boron on Salt Stress Responses of Three Mangrove Species
Salt stress is common but detrimental to plant growth, even in mangroves that live in saline areas. Boron (B) is an essential micronutrient that performs an important role in many functions in plants; however, its protective role under salt stress is poorly understood, especially in long-lived woody...
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2024-12-01
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| author | Jingjun Yang Haihang Wei Pifeng Lei Jie Qin Hongdeng Tian Donghan Fan Jihui Zhang Zhenkai Qin Xiaoying Huang Xiu Liu |
| author_facet | Jingjun Yang Haihang Wei Pifeng Lei Jie Qin Hongdeng Tian Donghan Fan Jihui Zhang Zhenkai Qin Xiaoying Huang Xiu Liu |
| author_sort | Jingjun Yang |
| collection | DOAJ |
| description | Salt stress is common but detrimental to plant growth, even in mangroves that live in saline areas. Boron (B) is an essential micronutrient that performs an important role in many functions in plants; however, its protective role under salt stress is poorly understood, especially in long-lived woody plants. In this study, we conducted an indoor experiment under simulated tidal conditions with four treatments (10‰ salinity, 40‰ salinity, 40‰ salinity + 100 μM B, and 40‰ salinity + 500 μM B) and three mangrove species (<i>Avicennia marina</i>, <i>Aegiceras corniculatum</i>, and <i>Bruguiera gymnorrhiza</i>) to investigate the effects of exogenous B on salt tolerance in plant growth, morphology, physiology, and leaf anatomy. The results showed that exogenous low-concentration B treatment (100 μM B) improved the performance of mangrove species under high salinity stress, especially in terms of physiology and leaf anatomy, while high-concentration B treatment (500 μM B) had adverse effects. Additionally, we found that the response to exogenous B varied among species in physiology and leaf anatomy, such as proline, malondialdehyde, activity of antioxidant enzymes, palisade tissue, and spongy tissue, which may be related to the salt tolerance of different species. This study may provide useful insights into the alleviation of salt stress by B in mangrove growth and development, which may facilitate mangrove cultivation and afforestation in a saline environment. |
| format | Article |
| id | doaj-art-e6d281eca3b843ab94a59ca4d58f9d31 |
| institution | Kabale University |
| issn | 2223-7747 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj-art-e6d281eca3b843ab94a59ca4d58f9d312025-01-10T13:19:41ZengMDPI AGPlants2223-77472024-12-011417910.3390/plants14010079Effects of Exogenous Boron on Salt Stress Responses of Three Mangrove SpeciesJingjun Yang0Haihang Wei1Pifeng Lei2Jie Qin3Hongdeng Tian4Donghan Fan5Jihui Zhang6Zhenkai Qin7Xiaoying Huang8Xiu Liu9College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, ChinaGuangxi Forestry Research Institute, Nanning 530002, ChinaCollege of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, ChinaGuangxi Forestry Research Institute, Nanning 530002, ChinaGuangxi Forestry Research Institute, Nanning 530002, ChinaQinzhou Forestry Research Institute, Qinzhou 535012, ChinaGuangxi Forestry Research Institute, Nanning 530002, ChinaGuangxi Forestry Research Institute, Nanning 530002, ChinaScientific Research Academy of Guangxi Environmental Protection, Nanning 530022, ChinaGuangxi Forestry Research Institute, Nanning 530002, ChinaSalt stress is common but detrimental to plant growth, even in mangroves that live in saline areas. Boron (B) is an essential micronutrient that performs an important role in many functions in plants; however, its protective role under salt stress is poorly understood, especially in long-lived woody plants. In this study, we conducted an indoor experiment under simulated tidal conditions with four treatments (10‰ salinity, 40‰ salinity, 40‰ salinity + 100 μM B, and 40‰ salinity + 500 μM B) and three mangrove species (<i>Avicennia marina</i>, <i>Aegiceras corniculatum</i>, and <i>Bruguiera gymnorrhiza</i>) to investigate the effects of exogenous B on salt tolerance in plant growth, morphology, physiology, and leaf anatomy. The results showed that exogenous low-concentration B treatment (100 μM B) improved the performance of mangrove species under high salinity stress, especially in terms of physiology and leaf anatomy, while high-concentration B treatment (500 μM B) had adverse effects. Additionally, we found that the response to exogenous B varied among species in physiology and leaf anatomy, such as proline, malondialdehyde, activity of antioxidant enzymes, palisade tissue, and spongy tissue, which may be related to the salt tolerance of different species. This study may provide useful insights into the alleviation of salt stress by B in mangrove growth and development, which may facilitate mangrove cultivation and afforestation in a saline environment.https://www.mdpi.com/2223-7747/14/1/79boronsalt stressmangrovegrowthmorphologyphysiology |
| spellingShingle | Jingjun Yang Haihang Wei Pifeng Lei Jie Qin Hongdeng Tian Donghan Fan Jihui Zhang Zhenkai Qin Xiaoying Huang Xiu Liu Effects of Exogenous Boron on Salt Stress Responses of Three Mangrove Species Plants boron salt stress mangrove growth morphology physiology |
| title | Effects of Exogenous Boron on Salt Stress Responses of Three Mangrove Species |
| title_full | Effects of Exogenous Boron on Salt Stress Responses of Three Mangrove Species |
| title_fullStr | Effects of Exogenous Boron on Salt Stress Responses of Three Mangrove Species |
| title_full_unstemmed | Effects of Exogenous Boron on Salt Stress Responses of Three Mangrove Species |
| title_short | Effects of Exogenous Boron on Salt Stress Responses of Three Mangrove Species |
| title_sort | effects of exogenous boron on salt stress responses of three mangrove species |
| topic | boron salt stress mangrove growth morphology physiology |
| url | https://www.mdpi.com/2223-7747/14/1/79 |
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