ThPP1 Gene Enhances Alkali Stress Tolerance in Transgenic Rice

Inorganic pyrophosphorylase is essential in the hydrolysis of pyrophosphate to inorganic phosphate during plant growth. Chinese scientists led by Rui He of Shenyang Agricultural University and the Chinese Academy of Agricultural Sciences, studied the transgenic rice overexpressing a soluble inorganic pyrophosphatase gene, ThPP1, from salt cress (Thellungiella halophila) in response to alkaline stress (AS).

Analysis showed that the transgenic lines revealed an enhanced tolerance to AS compared to the wild type. A total of 379 differentially-expressed genes were also found to be upregulated in the leaves of the transgenic lines. Further analysis shows that the enhanced tolerance of the transgenic rice to AS seems to be associated with the upregulation of the osmotic stress-related genes.

This study suggests that the ThPP1 gene plays an important regulatory role in conferring the tolerance of the transgenic rice to AS, and is a candidate in breeding for crop cultivation for alkaline tolerance.

For more on this study, read the article in Plant Cell Reports.


 

This article is part of the Crop Biotech Update, a weekly summary of world developments in agri-biotech for developing countries, produced by the Global Knowledge Center on Crop Biotechnology, International Service for the Aquisition of Agri-Biotech Applications SEAsiaCenter (ISAAA)

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