Table II. Distribution of metabolites significantly regulated in roots hairs in response to B. japonicum inoculation identified by GC-MS in polar (p) and nonpolar (np) extracts and by UPLC-QTOF-MS (LC-MS).

The number of known and unknown compounds is indicated. The activation (up), the repression (down), or dual regulation (activation at one time point and repression at another time point; both) are mentioned.

Method	All Compounds	Total Known	Total Unknown	Up Known	Down Known	Both Known	Up Unknown	Down Unknown
LC-MS	93	31	62	22	7	2	48	14
GC-MS np	33	3	30	3	0	0	27	3
GC-MS p	40	14	26	8	6	0	6	20
Total	166	48	118	33	13	2	81	37