id	keyword
abc-2128	proline
abc-2128	plants
abc-2128	expression
abc-2128	metal
abc-2128	tomato
abc-2128	ppm
abc-2128	stress
abc-2128	leaves
abc-2128	gene
abc-2128	content
abc-2128	p5cs1
abc-2128	pcs
abc-2128	chelating