Journal of Integrative Agriculture ›› 2014, Vol. 13 ›› Issue (4): 789-803.DOI: 10.1016/S2095-3119(13)60513-4

• 论文 • 上一篇    下一篇

Proteomics Identification of Differentially Expressed Leaf Proteins in Response to Setosphaeria turcica Infection in Resistant Maize

 ZHANG Xiao-li, SI Bing-wen, FAN Cheng-ming, LI Hong-jie , WANG Xiao-ming   

  1. 1、Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
    2、Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
    3、Beijing Plant Protection Station, Beijing 100029, P.R.China
  • 收稿日期:2013-02-18 出版日期:2014-04-01 发布日期:2014-04-16
  • 通讯作者: WANG Xiao-ming, Tel: +86-10-82109609, Fax: +86-10-82109608, E-mail: wangxiaoming@caas.cn
  • 作者简介:ZHANG Xiao-li, E-mail: comeonzxl@126.com
  • 基金资助:

    This work was supported by the China Agriculture Research System (Maize) (CARS-02).

Proteomics Identification of Differentially Expressed Leaf Proteins in Response to Setosphaeria turcica Infection in Resistant Maize

 ZHANG Xiao-li, SI Bing-wen, FAN Cheng-ming, LI Hong-jie , WANG Xiao-ming   

  1. 1、Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
    2、Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
    3、Beijing Plant Protection Station, Beijing 100029, P.R.China
  • Received:2013-02-18 Online:2014-04-01 Published:2014-04-16
  • Contact: WANG Xiao-ming, Tel: +86-10-82109609, Fax: +86-10-82109608, E-mail: wangxiaoming@caas.cn
  • About author:ZHANG Xiao-li, E-mail: comeonzxl@126.com
  • Supported by:

    This work was supported by the China Agriculture Research System (Maize) (CARS-02).

摘要: Northern corn leaf blight (NCLB), caused by the heterothallic ascomycete fungus Setosphaeria turcica, is a destructive foliar disease of maize and represents a serious threat to maize production worldwide. A comparative proteomic study was conducted to explore the molecular mechanisms underlying the defense responses of the maize resistant line A619 Ht2 to S. turcica race 13. Leaf proteins were extracted from mock and S. turcica-infected leaves after inoculated for 72 h and analyzed for differentially expressed proteins using two-dimensional electrophoresis and mass spectrometry identification. 137 proteins showed reproducible differences in abundance by more than 2-fold at least, including 50 up-regulated proteins and 87 down-regulated proteins. 48 protein spots were successfully identified by MS analysis, which included 10 unique, 6 up-regulated, 20 down-regulated and 12 disappeared protein spots. These identified proteins were classified into 9 functional groups and involved in multiple functions, particularly in energy metabolism (46%), protein destination and storage (12%), and disease defense (18%). Some defense-related proteins were upregulated such as β-glucosidase, SOD, polyamines oxidase, HSC 70 and PPIases; while the expressions of photosynthesis- and metabolism-related proteins were down-regulated, by inoculation with S. turcica. The results indicated that a complex regulatory network was functioned in interaction between the resistant line A619 Ht2 and S. turcica. The resistance processes of A619 Ht2 mainly resided on directly releasing defense proteins, modulation of primary metabolism, affecting photosyntesis and carbohydrate metabolism.

关键词: maize , Setosphaeria turcica , Ht2 gene , differential proteomics

Abstract: Northern corn leaf blight (NCLB), caused by the heterothallic ascomycete fungus Setosphaeria turcica, is a destructive foliar disease of maize and represents a serious threat to maize production worldwide. A comparative proteomic study was conducted to explore the molecular mechanisms underlying the defense responses of the maize resistant line A619 Ht2 to S. turcica race 13. Leaf proteins were extracted from mock and S. turcica-infected leaves after inoculated for 72 h and analyzed for differentially expressed proteins using two-dimensional electrophoresis and mass spectrometry identification. 137 proteins showed reproducible differences in abundance by more than 2-fold at least, including 50 up-regulated proteins and 87 down-regulated proteins. 48 protein spots were successfully identified by MS analysis, which included 10 unique, 6 up-regulated, 20 down-regulated and 12 disappeared protein spots. These identified proteins were classified into 9 functional groups and involved in multiple functions, particularly in energy metabolism (46%), protein destination and storage (12%), and disease defense (18%). Some defense-related proteins were upregulated such as β-glucosidase, SOD, polyamines oxidase, HSC 70 and PPIases; while the expressions of photosynthesis- and metabolism-related proteins were down-regulated, by inoculation with S. turcica. The results indicated that a complex regulatory network was functioned in interaction between the resistant line A619 Ht2 and S. turcica. The resistance processes of A619 Ht2 mainly resided on directly releasing defense proteins, modulation of primary metabolism, affecting photosyntesis and carbohydrate metabolism.

Key words: maize , Setosphaeria turcica , Ht2 gene , differential proteomics