BMC Plant Biology: Second-generation sequencing to identify wild soybean miRNA and its target gene under aluminum stress

BMC Plant Biology: Second-generation sequencing to identify wild soybean miRNA and its target gene under aluminum stress

Wild soybean ( Glycine soja ) is one of the most widely grown crops in the world. Compared to cultivated soybeans, wild soybeans are better able to adapt to natural environmental stresses such as drought, alkali, and salt stress. A systematic study of the traits of wild soybeans will contribute to the genetic improvement of cultivated soybeans. Recently, the research team led by Professor Nanhai, the State Key Laboratory of Subtropical Agricultural Bioresource Conservation and Utilization of South China Agricultural University, used the second generation high-throughput sequencing technology to identify and systematically analyze wild soybean miRNA and its target genes under aluminum stress. A new batch of wild soybean miRNAs and their target genes* have been discovered. The research was published in the October issue of BMC Plant Biology.
MicroRNAs (miRNAs) are a class of endogenous non-coding small RNAs that regulate a wide range of physiological processes in eukaryotes. Their regulation is achieved by degrading target mRNA or hindering its translation. Plant miRNAs are usually completely or nearly perfectly matched to their target genes, causing degradation of mRNA. In plants, miRNAs are involved in the regulation of developmental processes and responses to biotic or abiotic stresses. To determine the function of miRNAs, they must first identify their target genes. Degradation group sequencing is a recent and highly effective method for large-scale identification of plant miRNA target genes.
Professor Nian Hai's research group constructed two small RNA sequencing libraries and two degradation group sequencing libraries for the roots of wild soybean seedlings treated with aluminum and aluminum. 97 known miRNAs and 31 new miRNAs in wild soybeans were identified by miRNA sequencing. In addition, miRNAs on the 3P or 5P chain corresponding to 49 known miRNAs were also found. Of all identified miRNAs, expression of 30 miRNAs was associated with aluminum stress. Further using degradation group sequencing, the authors identified 86 target genes of known miRNAs and five target genes for sequencing to find miRNAs. The results of GO enrichment analysis showed that the target genes of 52 conserved miRNA families play an important role in transcriptional regulation. It was also found that some genes involved in stress response, such as auxin response factor (ARF), were cleaved by miRNA under aluminum stress conditions.
This study combined miRNA sequencing and degradation group sequencing technology to systematically determine the miRNA expression profile and target genes and functions of wild soybean under aluminum stress, which provides important information for understanding the regulation of miRNA under aluminum stress.
The small RNA sequencing and degradation group sequencing work in this study was provided by Lianchuan Biotech.
Lianchuan Biological Small RNA Sequencing and Degradation Group Sequencing Users Recently Published Article Index
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