J Integr Plant Biol. ›› 2010, Vol. 52 ›› Issue (11): 981-995.DOI: 10.1111/j.1744-7909.2010.00986.x

• Plant-environmental Interactions • Previous Articles     Next Articles

Proteomic Analysis of Rice Leaves Shows the Different Regulations to Osmotic Stress and Stress Signals

Lie-Bo Shu1,2, Wei Ding2, Jin-Hong Wu2, Fang-Jun Feng2, Li-Jun Luo1,2* and Han-Wei Mei2*   

  1. 1Huazhong Agricultural University, Wuhan 430070, China
    2Shanghai Agrobiological Gene Center, Shanghai 201106, China
  • Received:2010-05-03 Accepted:2010-07-12 Published:2010-07-23
  • About author:**Corresponding authors Tel: +86 21 6220 2938; Fax: +86 21 6220 4010; E-mail: lijun@sagc.org.cnhmei@sagc.org.cn

Abstract:

Following the idea of partial root-zone drying (PRD) in crop cultivation, the morphological and physiological responses to partial root osmotic stress (PROS) and whole root osmotic stress (WROS) were investigated in rice. WROS caused stress symptoms like leaf rolling and membrane leakage. PROS stimulated stress signals, but did not cause severe leaf damage. By proteomic analysis, a total of 58 proteins showed differential expression after one or both treatments, and functional classification of these proteins suggests that stress signals regulate photosynthesis, carbohydrate and energy metabolism. Two other proteins (anthranilate synthase and submergence-induced nickel-binding protein) were upregulated only in the PROS plants, indicating their important roles in stress resistance. Additionally, more enzymes were involved in stress defense, redox homeostasis, lignin and ethylene synthesis in WROS leaves, suggesting a more comprehensive regulatory mechanism induced by osmotic stress. This study provides new insights into the complex molecular networks within plant leaves involved in the adaptation to osmotic stress and stress signals.

Shu LB, Ding W, Wu JH, Feng FJ, Luo LJ, Mei HW (2010) Proteomic analysis of rice leaves shows the different regulations to osmotic stress and stress signals. J. Integr. Plant Biol. 52(11), 981–995

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