数字农科院2.0

Large-Scale Rice Mutant Establishment and High-Throughput Mutant Manipulation Help Advance Rice Functional Genomics

文献类型： 外文期刊

作者： Wolella, Eyob Kassaye;Cheng, Zhen;Li, Mengyuan;Xia, Dandan;Zhang, Jianwei;Duan, Liu;Liu, Li;Li, Zhiyong;Zhang, Jian

作者机构：

关键词： rice (Oryza sativa L.);mutagenesis;loss-of-function;gain-of-function;mutant library and DNA barcoding

期刊名称： PLANTS-BASEL

ISSN： 2223-7747

年卷期： 2025 年 14 卷 10 期

页码：

收录情况： SCIE（2025版）

摘要： Rice (Oryza sativa L.) is a stable food for over half of the world population, contributing 50-80% of the daily calorie intake. The completion of rice genome sequencing marks a significant milestone in understanding functional genomics, yet the systematic identification of gene functions remains a bottleneck for rice improvement. Large-scale mutant libraries in which the functions of genes are lost or gained (e.g., through chemical/physical treatments, T-DNA, transposons, RNAi, CRISPR/Cas9) have proven to be powerful tools for the systematic linking of genotypes to phenotypes. So far, using different mutagenesis approaches, a million mutant lines have been established and about 5-10% of the predicted rice gene functions have been identified due to the high demands of labor and low-throughput utilization. DNA-barcoding-based large-scale mutagenesis offers unprecedented precision and scalability in functional genomics. This review summarizes large-scale loss-of-function and gain-of-function mutant library development approaches and emphasizes the integration of DNA barcoding for pooled analysis. Unique DNA barcodes can be tagged to transposons/retrotransposons, DNA constructs, miRNA/siRNA, gRNA, and cDNA, allowing for pooling analysis and the assignment of functions to genes that cause phenotype alterations. In addition, the integration of high-throughput phenotyping and OMICS technologies can accelerate the identification of gene functions.

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