Lipid concentration and composition in xylem sap of woody angiosperms from a tropical savanna and a seasonal rainforest
Lipids may play an important role in preventing gas embolisms by coating nanobubbles in xylem sap. Few studies on xylem sap lipids have been reported for temperate plants, and it remain unclear whether sap lipids have adaptational significance in tropical plants. In this study, we quantify the lipid...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2024-01-01
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| Series: | Plant Diversity |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468265923001002 |
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| author | Ling-Bo Huang Xinyi Guan Amy Ny Aina Aritsara Jun-Jie Zhu Steven Jansen Kun-Fang Cao |
| author_facet | Ling-Bo Huang Xinyi Guan Amy Ny Aina Aritsara Jun-Jie Zhu Steven Jansen Kun-Fang Cao |
| author_sort | Ling-Bo Huang |
| collection | DOAJ |
| description | Lipids may play an important role in preventing gas embolisms by coating nanobubbles in xylem sap. Few studies on xylem sap lipids have been reported for temperate plants, and it remain unclear whether sap lipids have adaptational significance in tropical plants. In this study, we quantify the lipid composition of xylem sap for angiosperm species from a tropical savanna (seven species) and a seasonal rainforest (five species) using mass spectrometry. We found that all twelve species studied contained lipids in their xylem sap, including galactolipids, phospholipids and triacylglycerol, with a total lipid concentration ranging from 0.09 to 0.26 nmol/L. There was no difference in lipid concentration or composition between plants from the two sites, and the lipid concentration was negatively related to species’ open vessel volume. Furthermore, savanna species showed little variation in lipid composition between the dry and the rainy season. These results support the hypothesis that xylem sap lipids are derived from the cytoplasm of individual conduit cells, remain trapped inside individual conduits, and undergo few changes in composition over consecutive seasons. A xylem sap lipidomic data set, which includes 12 tropical tree species from this study and 11 temperate tree species from literature, revealed no phylogenetic signals in lipid composition for these species. This study fills a knowledge gap in the lipid content of xylem sap in tropical trees and provides additional support for their common distribution in xylem sap of woody angiosperms. It appears that xylem sap lipids have no adaptive significance. |
| first_indexed | 2024-03-08T06:21:55Z |
| format | Article |
| id | doaj.art-f8293e8f9e4447639304337fad4fbc89 |
| institution | Directory Open Access Journal |
| issn | 2468-2659 |
| language | English |
| last_indexed | 2024-03-08T06:21:55Z |
| publishDate | 2024-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Plant Diversity |
| spelling | doaj.art-f8293e8f9e4447639304337fad4fbc892024-02-04T04:45:50ZengKeAi Communications Co., Ltd.Plant Diversity2468-26592024-01-01461126133Lipid concentration and composition in xylem sap of woody angiosperms from a tropical savanna and a seasonal rainforestLing-Bo Huang0Xinyi Guan1Amy Ny Aina Aritsara2Jun-Jie Zhu3Steven Jansen4Kun-Fang Cao5State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Key Laboratory of Forest Ecology and Conservation, Guangxi University, Daxuedong Road 100, Nanning, Guangxi 530004, ChinaState Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Key Laboratory of Forest Ecology and Conservation, Guangxi University, Daxuedong Road 100, Nanning, Guangxi 530004, ChinaState Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Key Laboratory of Forest Ecology and Conservation, Guangxi University, Daxuedong Road 100, Nanning, Guangxi 530004, ChinaState Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Key Laboratory of Forest Ecology and Conservation, Guangxi University, Daxuedong Road 100, Nanning, Guangxi 530004, ChinaInstitute of Botany, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, GermanyState Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Key Laboratory of Forest Ecology and Conservation, Guangxi University, Daxuedong Road 100, Nanning, Guangxi 530004, China; Corresponding author.Lipids may play an important role in preventing gas embolisms by coating nanobubbles in xylem sap. Few studies on xylem sap lipids have been reported for temperate plants, and it remain unclear whether sap lipids have adaptational significance in tropical plants. In this study, we quantify the lipid composition of xylem sap for angiosperm species from a tropical savanna (seven species) and a seasonal rainforest (five species) using mass spectrometry. We found that all twelve species studied contained lipids in their xylem sap, including galactolipids, phospholipids and triacylglycerol, with a total lipid concentration ranging from 0.09 to 0.26 nmol/L. There was no difference in lipid concentration or composition between plants from the two sites, and the lipid concentration was negatively related to species’ open vessel volume. Furthermore, savanna species showed little variation in lipid composition between the dry and the rainy season. These results support the hypothesis that xylem sap lipids are derived from the cytoplasm of individual conduit cells, remain trapped inside individual conduits, and undergo few changes in composition over consecutive seasons. A xylem sap lipidomic data set, which includes 12 tropical tree species from this study and 11 temperate tree species from literature, revealed no phylogenetic signals in lipid composition for these species. This study fills a knowledge gap in the lipid content of xylem sap in tropical trees and provides additional support for their common distribution in xylem sap of woody angiosperms. It appears that xylem sap lipids have no adaptive significance.http://www.sciencedirect.com/science/article/pii/S2468265923001002Xylem sapLipidsTropical savannaTropical rainforestVessels |
| spellingShingle | Ling-Bo Huang Xinyi Guan Amy Ny Aina Aritsara Jun-Jie Zhu Steven Jansen Kun-Fang Cao Lipid concentration and composition in xylem sap of woody angiosperms from a tropical savanna and a seasonal rainforest Plant Diversity Xylem sap Lipids Tropical savanna Tropical rainforest Vessels |
| title | Lipid concentration and composition in xylem sap of woody angiosperms from a tropical savanna and a seasonal rainforest |
| title_full | Lipid concentration and composition in xylem sap of woody angiosperms from a tropical savanna and a seasonal rainforest |
| title_fullStr | Lipid concentration and composition in xylem sap of woody angiosperms from a tropical savanna and a seasonal rainforest |
| title_full_unstemmed | Lipid concentration and composition in xylem sap of woody angiosperms from a tropical savanna and a seasonal rainforest |
| title_short | Lipid concentration and composition in xylem sap of woody angiosperms from a tropical savanna and a seasonal rainforest |
| title_sort | lipid concentration and composition in xylem sap of woody angiosperms from a tropical savanna and a seasonal rainforest |
| topic | Xylem sap Lipids Tropical savanna Tropical rainforest Vessels |
| url | http://www.sciencedirect.com/science/article/pii/S2468265923001002 |
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