Expression patterns of tested hypothetical genes A, Constructs developed for testing the expression of hypothetical genes. RB and LB, T-DNA right and left borders; NPTII, kanamycin resistance gene; HG promoter, hypothetical gene promoter; NOS-ter, nos terminator; mGAL-VP16, GAL4-VP16 gene with modified codon usage; mGFP-ER, modified GFP with increased fluorescent properties and targeted to the endoplasmic reticulum. B, At2g02540 is expressed in vascular tissue. C, At2g31270 is expressed in carpels and petals. D, At2g33640 is expressed in pollen. E, At2g35550 is expressed in carpels, stamens, young anthers, and petals. F, At2g36340 is expressed in young anthers and some young seeds. Arrows indicate absent expression in three flowers.