TITLE

Low Temperature Stress Induced Changes in Biochemical Parameters, Protein Banding Pattern and Expression of Zat12 and Myb Genes in Rice Seedling

AUTHOR(S)
Perveen, Salma; Shinwari, Kamran Iqbal; Jan, Mehmood; Malook, Ijaz; Rehman, Shafiq; Khan, Murad Ali; Jamil, Muhammad
PUB. DATE
December 2013
SOURCE
Journal of Stress Physiology & Biochemistry;2013, Vol. 9 Issue 4, p193
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Low temperature stress is one of the main abiotic factors that reduce the productivity of many crops in hilly areas around the world. In this study, rice seedling were exposed to low temperature stress (control, 0°C, -2°C, -4°C and -6°C) for 2 hr to observe its effect on two rice varieties (Basmati- 385 and Shaheen Basmati) through ion and proline contents, photosynthetic pigments, total protein content, protein banding pattern and expression of Zat12 and Myb genes. Resulted showed different patterns of accumulation of Na+ K+ and Ca+2 ions with the decrease in temperature in both varieties. Proline accumulation was gradually increased in both varieties with the decrease in temperature. Photosynthetic pigments (Chlorophyll (Chl) a, b and carotene) were negatively affected by low temperature stress in both varieties, however, carotene content was much affected than Chl a and b. Nonsignificant variation in protein contents was observed at all levels of low temperature, but the effects of low temperature stress on protein banding pattern of Basmti-385 and Shaheen Basmati were different at different treatments. RT-PCR results indicated that ZAT12 was upregulated by short term low temperature stress while OsMYB show slight upregulation at -2°C as compared to the other treatments. This study identified that ZAT12 and OsMYB function as a positive regulator to mediate tolerance of rice seedlings at low temperature stress.
ACCESSION #
91939613

 

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