Fig. 1.

Phenotypes of OsEXPA7 transgenic lines. A The knockout type of OsEXPA7. B–D. Phenotypes (plant height, panicle length, and grain) of wild-type and OsEXPA7 overexpression (OE) and knockout (KO) lines. E–I. Growth traits (plant height, panicle length, thousand-grain weight, grain length, and grain width) of wild-type and OsEXPA7 OE and KO lines (n = 10). J. Scanning electron micrographs of grains of wild-type, OsEXPA7 OE, and OsEXPA7 KO lines. K. Grain phenotype of wild-type, OsEXPA7 OE, and OsEXPA7 KO lines, red solid lines indicate longitudinal direction. L–O. Cell length, cell width, cell numbers in transverse and longitudinal directions in wild-type, OsEXPA7 OE, and OsEXPA7 KO lines (n = 10). P–Q. Rice grain quality (gel consistency and amylose content) of wild-type, OsEXPA7 OE, and OsEXPA7 KO lines (n = 3). R Rice grain phenotypes of wild-type and OsEXPA7 KO lines