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, Jing Li Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Search for other works by this author on: Oxford Academic Chao-Qun Xu Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Search for other works by this author on: Oxford Academic Ling-Yu Song Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Search for other works by this author on: Oxford Academic Ze-Jun Guo Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University , Nanning 530004 , China Search for other works by this author on: Oxford Academic Lu-Dan Zhang Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Houji Laboratory in Shanxi Province, Shanxi Agricultural University , Taiyuan, Shanxi 030000 , China Search for other works by this author on: Oxford Academic Han-Chen Tang Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Search for other works by this author on: Oxford Academic Ji-Cheng Wang Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Search for other works by this author on: Oxford Academic Shi-Wei Song Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Search for other works by this author on: Oxford Academic Jing-Wen Liu Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Search for other works by this author on: Oxford Academic You-Hui Zhong Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Search for other works by this author on: Oxford Academic
, Bing-Jie Chi Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Search for other works by this author on: Oxford Academic Xue-Yi Zhu Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Search for other works by this author on: Oxford Academic Hai-Lei Zheng Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University , Xiamen, Fujian 361005 , China Corresponding author: College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361102, China. E-mail: zhenghl@xmu.edu.cn Search for other works by this author on: Oxford Academic
https://orcid.org/0000-0002-1227-0759 Tree Physiology, Volume 44, Issue 8, August 2024, tpae082, https://doi.org/10.1093/treephys/tpae082
Published:
08 July 2024
Article history
Received:
11 June 2024
Accepted:
04 July 2024
Published:
08 July 2024
Corrected and typeset:
04 August 2024
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Jing Li, Chao-Qun Xu, Ling-Yu Song, Ze-Jun Guo, Lu-Dan Zhang, Han-Chen Tang, Ji-Cheng Wang, Shi-Wei Song, Jing-Wen Liu, You-Hui Zhong, Bing-Jie Chi, Xue-Yi Zhu, Hai-Lei Zheng, Integrative analysis of transcriptome and metabolome reveal the differential tolerance mechanisms to low and high salinity in the roots of facultative halophyte Avicennia marina, Tree Physiology, Volume 44, Issue 8, August 2024, tpae082, https://doi.org/10.1093/treephys/tpae082
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Abstract
Mangroves perform a crucial ecological role along the tropical and subtropical coastal intertidal zone where salinity fluctuation occurs frequently. However, the differential responses of mangrove plant at the combined transcriptome and metabolome level to variable salinity are not well documented. In this study, we used Avicennia marina (Forssk.) Vierh., a pioneer species of mangrove wetlands and one of the most salt-tolerant mangroves, to investigate the differential salt tolerance mechanisms under low and high salinity using inductively coupled plasma-mass spectrometry, transcriptomic and metabolomic analysis. The results showed that HAK8 was up-regulated and transported K+ into the roots under low salinity. However, under high salinity, AKT1 and NHX2 were strongly induced, which indicated the transport of K+ and Na+ compartmentalization to maintain ion homeostasis. In addition, A. marina tolerates low salinity by up-regulating ABA signaling pathway and accumulating more mannitol, unsaturated fatty acids, amino acids' and L-ascorbic acid in the roots. Under high salinity, A. marina undergoes a more drastic metabolic network rearrangement in the roots, such as more L-ascorbic acid and oxiglutatione were up-regulated, while carbohydrates, lipids and amino acids were down-regulated in the roots, and, finally, glycolysis and TCA cycle were promoted to provide more energy to improve salt tolerance. Our findings suggest that the major salt tolerance traits in A. marina can be attributed to complex regulatory and signaling mechanisms, and show significant differences between low and high salinity.
© The Author(s) 2024. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permission@oup.com
This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/pages/standard-publication-reuse-rights)
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Research Paper
Handling Editor: Marilyn Ball Marilyn Ball Handling Editor Search for other works by this author on: Oxford Academic
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