Ensuring food security is a challenge for humans. Rice grain yield and quality must urgently be increased to overcome this challenge. MicroRNA (miRNA) is an important regulatory module in plant development and stress responses. Grain yield and quality are pleiotropic traits that employ cooperative genetic factors, including miRNA and its regulatory mechanisms. This review provides an overview of plant miRNAs and the composition and development process of rice grains. It also summarizes the research progress in miRNA regulation for agronomically important rice grain traits, providing a basis for further identifying miRNAs related to rice grain development and elucidating their regulatory mechanisms.
Ye et al. (Sun,) studied this question.
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