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Int. J. Mol. Sci. 2013, 14(1), 1740-1762; doi:10.3390/ijms14011740

Comparative Proteomic Analysis of Puccinellia tenuiflora Leaves under Na2CO3 Stress

1 College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China 2 Sanquan Medical College, Xinxiang Medical University, Xinxiang 453003, He'nan, China 3 Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, Gainesville, FL 32610, USA 4 Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China 5 Binzhou Polytechnic College, Binzhou 256603, Shandong, China
* Author to whom correspondence should be addressed.
Received: 17 October 2012 / Revised: 31 December 2012 / Accepted: 6 January 2013 / Published: 15 January 2013
(This article belongs to the collection Advances in Proteomic Research)


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 proteomics; halophyte; Puccinellia tenuiflora; Na2CO3 response
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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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.

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