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Heat stress protection in Aspen sp1 transgenic Arabidopsis thaliana
Bo Zhu1, Ai-Sheng Xiong, Ri-He Peng
1College of Horticulture, Nanjing Agricultural University, Nanjing, China.
Abstract:
It is known that the stable protein 1 (SP1) detected in aspen plants remains soluble upon boiling and that sp1 expression in transgenic aspen is resistant to salt stress. Presently, we analyzed the effect of expression of SP1 in Arabidopsis thaliana plants and their response to high temperature stress. After 45 degrees C for 16 h, relative to wild type plants, sp1 transgenic plants exhibited stronger growth and were better in several physiological properties including chlorophyll, chlorophyll fluorescence, water content, proline content, and malondialdehyde content. These preliminarily results suggest that the over-expression of SP1 may notably enhance heat-tolerant level of transgenic A. thaliana plants.
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