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Comparative Proteomic Analysis of Puccinellia tenuiflora Leaves under Na2CO3 Stress
College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China
Sanquan Medical College, Xinxiang Medical University, Xinxiang 453003, He'nan, China
Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, Gainesville, FL 32610, USA
Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
Binzhou Polytechnic College, Binzhou 256603, Shandong, China
* Author to whom correspondence should be addressed.
Received: 17 October 2012; in revised form: 31 December 2012 / Accepted: 6 January 2013 / Published: 15 January 2013
Abstract: Soil salt-alkalinization is a widespread environmental stress that limits crop growth and agricultural productivity. The influence of soil alkalization caused by Na2CO3 on plants is more severe than that of soil salinization. Plants have evolved some unique mechanisms to cope with alkali stress; however, the plant alkaline-responsive signaling and molecular pathways are still unknown. In the present study, Na2CO3 responsive characteristics in leaves from 50-day-old seedlings of halophyte Puccinellia tenuiflora were investigated using physiological and proteomic approaches. Comparative proteomics revealed 43 differentially expressed proteins in P. tenuiflora leaves in response to Na2CO3 treatment for seven days. These proteins were mainly involved in photosynthesis, stress and defense, carbohydrate/energy metabolism, protein metabolism, signaling, membrane and transport. By integrating the changes of photosynthesis, ion contents, and stress-related enzyme activities, some unique Na2CO3 responsive mechanisms have been discovered in P. tenuiflora. This study provides new molecular information toward improving the alkali tolerance of cereals.
Keywords: proteomics; halophyte; Puccinellia tenuiflora; Na2CO3 response
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Yu, J.; Chen, S.; Wang, T.; Sun, G.; Dai, S. Comparative Proteomic Analysis of Puccinellia tenuiflora Leaves under Na2CO3 Stress. Int. J. Mol. Sci. 2013, 14, 1740-1762.
Yu J, Chen S, Wang T, Sun G, Dai S. Comparative Proteomic Analysis of Puccinellia tenuiflora Leaves under Na2CO3 Stress. International Journal of Molecular Sciences. 2013; 14(1):1740-1762.
Yu, Juanjuan; Chen, Sixue; Wang, Tai; Sun, Guorong; Dai, Shaojun. 2013. "Comparative Proteomic Analysis of Puccinellia tenuiflora Leaves under Na2CO3 Stress." Int. J. Mol. Sci. 14, no. 1: 1740-1762.