Abstract
Hibiscus tiliaceus, a mangrove associate, is an ideal plant for studying salt tolerance and adaptation since it can inhabit both inland and littoral habitats. In this study, we explored the expression profiles of H. tiliaceus under salt stress using a full-length cDNA microarray. Four hundred eighty-six salt-responsive unigenes were identified in H. tiliaceus; 224 of which had high sequence similarity to Arabidopsis. Many genes identified are known to be salt-stress responsive. Furthermore we examined the physiological performance of H. tiliaceus under salt stress. Physiological analysis displayed decrease in ratio of K+/Na+ and negative influence on photosynthesis of H. tiliaceus. Our study indicated that to survive under high salinine intertidal environments, H. tiliaceus evolved its own mechanisms to re-gain both ionic and osmotic homeostasis through coordinated engagement of genes associated with gene transcription, signaling, and down-stream cell transport and detoxification pathways.
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Acknowledgments
We thank Jiajun Zhang, Suisui Dong, Yan Li, Guorong Wen, Haijun Wen, Jin Liu, Wei Wu, Linghui Wu, Shulin Deng, and San Liang for their help in the experiment. Special appreciation should be given to Qiang Fan for his helping in material collection. This study is supported by grants from the National Natural Science Foundation of China (30730008, 40976081, 30800060, 30970208, and 40876075), the National Basic Research Program of China (2007CB815701), National S&T Major Project of China (2009ZX08010-017B), the Natural Science Foundation of Guangdong Province (8451027501001492, 8151027501000089), Ministry of Education Foundation of China (20070558030), the Fundamental Research Funds for the Central Universities (09lgpy35, 10lgpy20) and the Visiting Scholar Foundation of State Key Lab of Biocontrol (SKLBC09F06).
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Yang, G., Zhou, R., Tang, T. et al. Gene Expression Profiles in Response to Salt Stress in Hibiscus Tiliaceus . Plant Mol Biol Rep 29, 609–617 (2011). https://doi.org/10.1007/s11105-010-0267-0
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DOI: https://doi.org/10.1007/s11105-010-0267-0