595200 Synthesis of sialic acid in plants Provided is a method of controlling weeds in an area, said method comprising planting seeds in soil of the area, wherein said seeds comprise a specified sequence of a polynucleotide that encodes a protein that enzymatically degrades an aryloxyalkanoate chemical substructure of an aryloxyalkanoate herbicide, said method further comprising applying said aryloxyalkanoate herbicide to said area.