Tillering and panicle branching genes in rice

Abstract

Rice (Oryza sativa L.) is one of the most important staple food crops in the world, and rice tillering and panicle branching are important traits determining grain yield. Since the gene MONOCULM 1 (MOC 1) was first characterized as a key regulator in controlling rice tillering and branching, great progress has been achieved in identifying important genes associated with grain yield, elucidating the genetic basis of yield-related traits. Some of these important genes were shown to be applicable for molecular breeding of high-yielding rice. This review focuses on recent advances, with emphasis on rice tillering and panicle branching genes, and their regulatory networks.

Keywords: ABERRANT PANICLE ORGANIZATION 1; AMs; APC/C; APO1; BIN2; BRASSINOSTEROID-INSENSITIVE 2; BRs; D14; DENSE AND ERECT PANICLE; DEP; Dwarf 14; FC1; FINE CULM1; IDEAL PLANT ARCHITECTURE1; IDS1; INDETERMINATE SPIKELET1; IPA1; LRR; LS/LAS; Lax Panicle; MAX; MOC 1; MONOCULM 1; MORE AUXILIARY GROWTH; OsSPL14; Panicle branching gene; QTLs; Regulation; Rice; SHORT PANICLE 1; SL; SMALL PANICLE; SNB; SPA; SQUAMOSA PROMOTER BINDING PROTEIN-LIKE14; SUPERNUMERARY BRACT; TB1; TEOSINTE BRANCHED1; Tillering gene; UFO; UNUSUAL FLORAL ORGANS; WFP; Wealthy Farmer's Panicle; anaphase promoting complex/cyclosome; axillary meristems; brassinosteroids; lateral suppressor; lax; leucine-rich repeat; quantitative trait loci; sp1; strigolactone; tad1; te; tiller enhancer; tillering and dwarf 1.