The regulatory effect of rice-specific small molecule RNA 5144-3p.

In the process of plant response to adversity stress, the formation of disulfur bond catalyzed by protein disulfur bondisted plays an important role in the stability of protein, correct folding and the normal function of protein function, and ultimately affects the resistance of plants and the formation of crop yield and quality.
rice disulfur-bonded isomorphase gene OsPDIL1;1 is a key disulfur bond isomorphase gene.
small molecule RNA is a common type of non-coding RNA between 18-24 nt and one of the most important regulatory factors in eukaryotic organisms.
Xia Express, associate researcher of the Plant Physiology and Biochemistry Research Group of the South China Botanical Garden of the Chinese Academy of Sciences, and Zhang Mingyong, a researcher, found that a small molecule RNA 5144-3p (osa-miR5144-3p) regulated OsPDI1;
the expression of the super expression OsPDIL1;1 and the reduction of the expression osa-miR5144-3p makes rice resistant to salt, high temperature, low temperature, mercury content decreased in the seeds, while making the rice seed starch grain fuller and tighter;
this study provides important genetic resources for molecular breeding of rice seed quality and low mercury accumulation.
research work has been supported by the National Natural Science Foundation of China, the Guangdong Science and Technology Program and the National Key Research and Development Program.
research published in Plant and Cell Physiology and selected as one of the Highlight papers for February 2018.
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