Skip to content
2000
Volume 13, Issue 3
  • ISSN: 1570-1646
  • E-ISSN: 1875-6247

Abstract

Drought is a major environmental factor that limits grain yield in rice. In order to understand the proteomic changes in response to drought at reproductive stage, proteins expressed in the young panicles were compared between two varieties of rice with contrasting tolernace to drought. The identified 36 differentially expressed proteins are involved in energy production, metabolism, stress defense, protein destination and cell structure. A coordinative up-regulation of triosephosphate isomerase, glycin decarboxylase complex H-protein, glyoxylase I and cytosolic ascorbate peroxidase was obseved in the drought tolerant variety Zhonghan 3, which may contribute to higher tolerance by increasing the energy production and maintaining redox homeostasis. Two-dimensional Western blotting experiments identified three APX1 and three APX2 isoforms up-regulated during drought stress in drought-tolerant varieties (Zhonghan 3, IRAT109 and PRATAO). However, in droughtsuceptible varieties (IR29, Zhengshan 97B and CATUNA), expression of the six isoforms was unchanged or even down-regulated. Under normal growth conditions, expression level of the six APX isoforms showed negative correlation with drought tolerance of rice. Our data suggested that APX isoforms may be considered as indicators of the redox status that related to drought tolerance in rice.

Loading

Article metrics loading...

/content/journals/cp/10.2174/1570164613666160722155201
2016-09-01
2025-09-06
Loading full text...

Full text loading...

/content/journals/cp/10.2174/1570164613666160722155201
Loading

  • Article Type:
    Research Article
Keyword(s): Cytosolic ascorbate peroxidase; drought tolerance; panicle; proteome; redox; rice
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error
Please enter a valid_number test