Potential Genetic Target Changes in Height and Branches-A Short Review on OsmiR535

Abstract

It is a member of the miR156/529/535 superfamily, which is one of the most conserved miRNA families in plants. OsmiR535 regulates the cold-stress response, modulates plant growth, and controls panicle design and grain length. However, the significance of OsmiR535 in plant drought and salinity responses is unknown. The miR535s identified in terrestrial plants were less conserved than miR156s during evolution, according to this study. Similar to OsmiR529 in rice, miR535 is expressed a very low level during vegetative growth but is significantly accumulated in early panicles. Overexpression of OsmiR535 in rice decreased plant height by reducing the length of the 1st and 2nd internodes. There was also a significant impact on panicle architecture due to the overexpression of OsmiR535. In addition, OsmiR535 overexpression inhibited the expression of OsSPL7/12/16, as well as OsDEP1, OsLOG, and OsSLR1. OsmiR535 regulates plant height, panicle architecture and grain form in rice in several ways, according to our findings.

Keywords: OsmiR535; Oryza sativa; miRNA; panicle; grain form